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Chapter 8, Signaling Decoder Screen

Continuous Digital Controlled Squelch System Decoder

Input Level

This field specifies the signal level that you input (after de-emphasis if used). The
higher the level of signal expected by the analyzer, the higher the trigger level is
set.

Operating Considerations

The unit-of-measure is determined by the

AF Anl In

setting.

The input level should be set high enough to prevent false triggering, but low
enough to detect all valid zero-crossings of the incoming signal.

When using de-emphasis, the

Input Level

setting may need to be reduced

significantly to properly decode the incoming signal. De-emphasis is enabled/
disabled using the

De-Emphasis

field on the AF ANALYZER screen.

See Also

field description, on page 283

Polarity

This field is used to match the polarity of the encoded signal being analyzed.

Normal Operation. When this field is set to

Norm

, a logical high (1) is displayed

when a positive peak in the received signal is detected. A negative peak displays a
logical low (0).

Inverted Operation. When this field is set to

Invert

, a logical low (0) is

displayed when a positive peak in the received signal is detected. A negative peak
displays a logical high (1).

Operating Considerations

Inverting amplifiers used in transmitters, receivers, and repeaters can cause an
inversion of the modulating digital data. If the decoded signal does not display the
expected results, change this field’s setting to see if the signal may be getting
inverted before being decoded.

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Summary of Contents for 8920A

Page 1: ...HOLD PRINT SCREEN CONTROL LOCAL ADRS RECAL SAVE MEAS PRESE INSTRUMENT STATE DATA FUNCTIONS INCR REF INCR METER INCR AVG LO HI CURSOR CON PUSH TO CANCE SHIFT k1 k1 k2 k2 k3 k3 k4 ASSIG k5 RELEA USER DATA 7 8 9 4 5 6 1 2 3 0 _ ENTER GHz dB MHz kHz s Hz ms Ω ppm NO ON OFF YES MEMO AUDIO IN LO HI MAX MAX AUDIO SQUELC VOL MIC MAX POWER 200 ANT IN DUPLEX OUT RF IN OUT MAX POWER POWE OF O ...

Page 2: ...daptation or translation without prior written permission is prohibited except as allowed under the copyright laws This material may be reproduced by or for the U S Government pursuant to the Copyright License under the clause at DFARS 52 227 7013 APR 1988 Hewlett Packard Company Learning Products Department 24001 E Mission Liberty Lake WA 99019 9599 U S A ...

Page 3: ... the operator position 70 dB A Sound Pressure Lp 70 dB A At Operator Position Normal Operation According to ISO 7779 1988 EN 27779 1991 Type Test Herstellerbescheinigung Diese Information steht im Zusammenhang mit den Anforderungen der Maschinenlärminformationsverordnung vom 18 Januar 1991 Schalldruckpegel Lp 70 dB A Am Arbeitsplatz Normaler Betrieb Nach ISO 7779 1988 EN 27779 1991 Typprüfung ...

Page 4: ...tential shock hazard always connect the rear panel chassis ground terminal to earth ground when operating this instrument from a dc power source SAFETY SYMBOLS Indicates instrument damage can occur if indicated operating limits are exceeded Refer to the instructions in this guide Indicates hazardous voltages Indicates earth ground terminal WARNING A WARNING note denotes a hazard It calls attention...

Page 5: ...in a normal condition in which all means for protection are intact only No operator serviceable parts in this product Refer servicing to qualified personnel To prevent electrical shock do not remove covers Servicing instructions are for use by qualified personnel only To avoid electrical shock do not perform any servicing unless you are qualified to do so The opening of covers or removal of parts ...

Page 6: ... dampened with water to clean the external case parts Do not attempt to clean internally Ventilation Requirements When installing the product in a cabinet the convection into and out of the product must not be restricted The ambient temperature outside the cabinet must be less than the maximum operating temperature of the product by 4 C for every 100 watts dissipated in the cabinet If the total po...

Page 7: ...ontain remanufactured parts equivalent to new in performance or may have been subject to incidental use 5 The warranty period begins on the date of delivery or on the date of installation if installed by HP If customer schedules or delays HP installation more than 30 days after delivery warranty begins on the 31st day from delivery 6 Warranty does not apply to defects resulting from a improper or ...

Page 8: ... OR FOR DIRECT SPECIAL INCIDENTAL CONSEQUENTIAL INCLUDING LOST PROFIT OR DATA OR OTHER DAMAGE WHETHER BASED IN CONTRACT TORT OR OTHERWISE FOR CONSUMER TRANSACTIONS IN AUSTRALIA AND NEW ZEALAND THE WARRANTY TERMS CONTAINED IN THIS STATEMENT EXCEPT TO THE EXTENT LAWFULLY PERMITTED DO NOT EXCLUDE RESTRICT OR MODIFY AND ARE IN ADDITION TO THE MANDATORY STATUTORY RIGHTS APPLICABLE TO THE SALE OF THIS P...

Page 9: ...Site Test Set HP 8920A HP 8920B and HP 8921A This declaration covers all options of the above product conforms to the following Product specifications Safety IEC 348 1978 HD 401S1 19811 EMC CISPR 11 1990 EN 55011 1991 Group 1 Class A EN50082 1 1992 IEC 801 2 1991 4 kV CD 8 kV AD IEC 801 3 1984 3V m IEC 801 4 1988 0 5 kV Sig Lines 1 kV Power Lines Supplementary Information This product herewith com...

Page 10: ...42 Northern Europe Sales and Service Hewlett Packard Nederland B V Startbaan 16 1187 XR Amstelveen The Netherlands P O Box 667 Telephone 31 20 5476911 X 6631 Fax 31 20 6471825NL Asia Sales and Service Hewlett Packard Asia Ltd 22 30 F Peregrine Tower Lippo Center 89 Queensway Central Hong Kong G P O Box 863 Hong Kong Telephone 852 848 7777 Fax 852 868 4997 Japan Sales and Service Yokogawa Hewlett P...

Page 11: ...ica Hewlett Packard Company LAHQ Mexico City Col Lomas de Virreyes 11000 Mexico D F Mexico Telephone 52 5 326 4000 Fax 52 5 202 7718 United Kingdom Sales and Service Hewlett Packard Ltd Cain Road Amen Corner Bracknell Berkshire RG12 1HN United Kingdom Telephone 44 344 360000 Fax 44 344 363344 Table 1 Regional Sales and Service Offices Continued ...

Page 12: ... 23 Screen and Field Descriptions These chapters contains reference information for each screen and its fields Many of the descriptions contain signal flow diagrams that relate the screen s fields to the func tions they perform The screens are arranged in alphabetical order by title at the top of the screen Signaling Encoder and Signaling Decoder are alphabetized by the names Encoder and Decoder C...

Page 13: ...nts 13 1 Get Started Before Connecting a Radio 40 Accessing the Test Set s Screens 41 Changing A Field s Setting 43 How do I Verify that the Test Set is Operating Properly 46 Instrument Functional Diagram 47 ...

Page 14: ...Contents 14 2 Configuring Your Test Set General Operating Information 50 ...

Page 15: ...ing and Changing Numbers 63 Printing A Screen 66 Using Measurement Limit Indicators 67 Averaging Measurements 69 Setting A Measurement Reference 70 Using Memory Cards 71 Saving and Recalling Instrument Setups 76 Using USER Keys 80 Setting an RF Generator Analyzer Offset 84 Using Remote Control 85 ...

Page 16: ...Contents 16 4 Adjacent Channel Power Screen How the Test Set Measures Adjacent Channel Power ACP 90 Field Descriptions 91 ...

Page 17: ...Contents 17 5 AF Analyzer Screen Block Diagram 100 ...

Page 18: ...Call Processing Functions 140 Using the CALL CONTROL Screen to test AMPS Authentication 151 AUTHENTICATION Screen 162 CALL DATA Screen 165 CALL DATA Screen Message Field Descriptions 170 Using the CALL DATA Screen 186 CALL BIT Screen 194 CALL BIT Screen Message Field Descriptions 201 Using the CALL BIT Screen 239 ANALOG MEAS Screen 244 Using the ANALOG MEAS Screen 247 CALL CONFIGURE Screen 250 ...

Page 19: ...Contents 19 7 Configure Screen Field Descriptions 254 ...

Page 20: ...r 280 Using the CDCSS Decoder 284 Digital Paging Decoder 285 Dual Tone Multi Frequency DTMF Decoder 289 Using the DTMF Decoder 294 EDACS Decoder 295 Using the EDACS Decoder 298 Function Generator Decoder 301 Using the Function Generator Decoder 304 LTR Decoder 305 Using the LTR Decoder 309 MPT 1327 Decoder 311 NMT Decoder 316 Using the NMT Decoder Encoder 321 Creating NMT Tests 326 Tone Sequence D...

Page 21: ...Contents 21 9 Duplex Test Screen Block Diagram 340 Field Descriptions 341 ...

Page 22: ...TACS Encoder 367 CDCSS Encoder 368 Using the CDCSS Encoder 372 Digital Paging Encoder 373 DTMF Sequence Encoder 378 EDACS Encoder 382 Using the EDACS Encoder 388 Function Generator Encoder 393 LTR Encoder 396 Using the LTR Encoder 400 MPT 1327 Encoder 404 Using the MPT 1327 Encoder 417 Nordic Mobile Telephone NMT Encoder 420 Tone Sequence Encoder 432 ...

Page 23: ...Contents 23 11 Help Screen Field Descriptions 436 ...

Page 24: ...Contents 24 12 I O Configure Screen Field Descriptions 438 ...

Page 25: ...Contents 25 13 Message Screen Field Descriptions 444 ...

Page 26: ...Contents 26 14 Oscilloscope Screen Field Descriptions 446 Using the Oscilloscope 452 ...

Page 27: ...Contents 27 15 Print Configure Screen Field Descriptions 454 ...

Page 28: ...Contents 28 16 Radio Interface Screen Radio Interface Functional Description 458 Field Descriptions 460 Using the Radio Interface Manual Operation 463 Using The Radio Interface Remote Operation 469 ...

Page 29: ...Contents 29 17 RF Analyzer Screen Block Diagram 472 Field Descriptions 473 ...

Page 30: ...Contents 30 18 RF Generator Screen Block Diagram 484 Field Descriptions 485 ...

Page 31: ...Contents 31 19 RX Test Screen Block Diagram 494 Field Descriptions 495 ...

Page 32: ...Contents 32 20 Service Screen Field Descriptions 502 ...

Page 33: ...Contents 33 21 Spectrum Analyzer Screen Field Descriptions 506 Using the Spectrum Analyzer 518 ...

Page 34: ...n Menu 522 TESTS Channel Information 525 TESTS Test Parameters 527 TESTS Order of Tests 528 TESTS Pass Fail Limits 530 TESTS Save Delete Procedure 532 TESTS Execution Conditions 535 TESTS External Devices 538 TESTS Printer Setup 541 TESTS IBASIC Controller 544 ROM Programs 546 ...

Page 35: ...Contents 35 23 TX Test Screen Block Diagram 550 Field Descriptions 551 ...

Page 36: ...Contents 36 24 Connector Key and Knob Descriptions Connector Descriptions 562 Key Descriptions 580 Knob Descriptions 584 ...

Page 37: ...Contents 37 25 Modifications Accessories Manuals Support Modifications 586 Accessories 589 HP Support for Your Instrument 602 ...

Page 38: ...Contents 38 Index 619 ...

Page 39: ...39 1 Get Started ...

Page 40: ...ectly to the Test Set All UUT transmitter power measurements are made through this port Off the air measurements can be made using the ANT IN port CAUTION Overpower Damage Refer to the Test Set s front panel for maximum input power level Exceeding this level can cause permanent instrument damage Figure 1 Connecting a Radio to the Test Set Speaker or Audio Out Mic Audio In Mic Key Antenna Radio Und...

Page 41: ... Configuration Screens Adjacent Channel Power Configure AF Analyzer I O Configure Decoder Print Configure Duplex User Assistance Screens Encoder Help Oscilloscope Message Radio Interface Service Assistance Screen RF Analyzer Service RF Generator Call Processing Screens RX Test Call Control Spectrum Analyzer Call Data TX Test Call Bit Software Control Screens Call Configure Tests Analog Measure Tes...

Page 42: ...s Test Set s screens can be accessed through Front panel keys The front panel Cursor Control knob using the To Screen menu see item 5 in fig ure 3 on page 43 HP IB using the DISPlay subsystem Figure 2 Accessing the Screens Front Panel Key Access to Screens Knob Access to Additional Screens Knob Access to Screens ...

Page 43: ... A Field s Setting Changing A Field s Setting There are several types of CRT display fields in the Test Set This section describes some of the different types of fields Figure 3 Different Types of Fields rxscrn wmf 1 5 4 2 3 intro4 wmf ...

Page 44: ...splay 2 Press a key labeled with a different unit of measure such as W If the new units are valid the measurement value is displayed in the unit Underlined Immediate Action Field Underlined immediate action fields provide a choice of two settings See item 2 in figure 3 to see an example of an underlined immediate action field To change an underlined entry 1 Position the cursor at the field 2 Push ...

Page 45: ... immediately activated when selected The To Screen menu see item 5 in figure 3 is a variation of the one of many field Numeric Entry Field Numeric entry fields contain values for settings like External Load Resistance and RF Generator Frequency See item 4 in figure 3 to see an example of a numeric entry field To change a value 1 Position the cursor at the field 2 Key in the desired number using th...

Page 46: ...anual f Set the Tune Freq field to 825 MHz g Set the Input Port field to Ant h Set the RF Gen Freq field to 825 MHz i Set the Amplitude field to 10 dBm j Set the Output Port field to Dupl k Verify that AFGen1 Freq is set to 1 0000 kHz and that AFGen1 To is set to FM and 3 00 kHz l Set the AF Anl In field to FM Demod m Set the Filter 1 field to 300Hz HPF n Set the Filter 2 field to 3kHz LPF o Verif...

Page 47: ...47 Chapter 1 Get Started Instrument Functional Diagram Instrument Functional Diagram Figure 4 Instrument Functional Diagram 1 of 2 ...

Page 48: ...48 S HP892XX USRGUIDE manual getstart fb Chapter 1 Get Started Instrument Functional Diagram Figure 5 Instrument Functional Diagram 2 of 2 intr bd2 wmf ...

Page 49: ...ettings used to alter instrument operation and hardware communication settings The HP IB address screen intensity serial communication parameters and several other settings are changed in these screens Most CONFIGURE and I O CONFIGURE screen entries are saved when the instrument is turned off ...

Page 50: ...nt of the RFGen Volts field 3 Press the Cursor Control knob or press ENTER to select 50 ohm or emf Voltage settings can control either the voltage across a 50 ohm load or the open circuit voltage emf This setting affects the RF Generator s and the Tracking Generator s amplitudes To Set the Date and Time 1 Access the CONFIGURE screen 2 Select the Date field and use the DATA keys to enter the date i...

Page 51: ...FIGURE screen 2 The current time setting is shown under the Low Battery field 3 Select that field to display a list of setting choices Select the desired time or Select Disable to eliminate the low battery warning The low battery warning system is used to alert you when you have not used any front panel controls within a specified amount of time This setting is only used with DC power It does not ...

Page 52: ...52 S HP892XX USRGUIDE manual configts fb Chapter 2 Configuring Your Test Set General Operating Information ...

Page 53: ... in this section discusses some frequently used operating features of the Test Set From reading chapter 1 Get Started you should understand What fields and screens are How to use the Cursor Control knob to select different fields and screens ...

Page 54: ...n1 Freq is an example of this field type Figure 6 Example of How Global Fields Work Priority fields give the RX TEST and TX TEST screens priority control of their settings No matter what these fields were set to in other screens if the RX TEST or TX TEST screen is accessed the field changes to whatever it was last set to in these screens The RF Generator s Amplitude field is an example of this fie...

Page 55: ...X TEST Fields Priority Field RX TEST TX TEST RF Gen Amplitude Presets to 80 dBm changeable Always Off AFGen1 To Presets to FM changeable Always Audio Out AF Anl In Always Audio In Presets to FM Demod changeable Detector Always RMS Presets to Pk Max changeable De emphasis Always Off Presets to 750 changeable AF Anl Measurement Presets to SINAD changeable Presets to Audio Freq changeable µs ...

Page 56: ...56 S HP892XX USRGUIDE manual opoverv fb Chapter 3 Operating Overview Interaction Between Screens Figure 7 Example of How Priority Fields Work fig2 2 wmf ...

Page 57: ...57 Chapter 3 Operating Overview Displaying Measurements Displaying Measurements Figure 8 Where To Access Measurements scntxrx wmf ...

Page 58: ...in figure 8 on page 57 If Ant antenna is selected the measurement is replaced by four dashes You can measure low power levels on the ANT IN port using the Spectrum Analyzer 1 Refer to the TX Power field description on page 559 and the TX Pwr Zero field description on page 560 for more information on measuring transmitter power 1 Optional on some Test Set models CAUTION Connecting a signal of 200 m...

Page 59: ... are available in the TX TEST DUPLEX TEST RF GENERATOR RF ANALYZER and AF ANALYZER screens Refer to item 3 in figure 8 on page 57 a AC Level is also measured in the RX TEST screen but always uses the AUDIO IN connector as the input Refer to item 5 in figure 8 on page 57 Table 4 AF Measurements Selected by AF Analyzer Input Setting Measurement AF Anl In Setting FM Deviation FM Demod FM Mod AM Depth...

Page 60: ...urement is normally shown using an analog type meter and small digits but can be changed to display in large digits only See To Use the Analog METER Format on page 62 DC Current can only be measured using the rear panel DC CURRENT MEASUREMENT connections 1 Selecting SNR Signal Noise Ratio turns off the other audio measurement For more information on making this measurement see the RF Gen Freq fiel...

Page 61: ...you to change the associated unit of measure For instance the TX Power measurement is usually displayed in Watts but can be changed to display in mW dBm V mV or dBµV Select mW by pressing SHIFT ENTER For example to display transmitter power in units of dBm instead of Watts 1 Move the cursor in front of the unit of measure for the TX Power measurement W 2 Press the dBm key The measurement value is ...

Page 62: ...ncel the METER function The METER function displays an equivalent analog display This is the SINAD measurement s default state when the instrument is turned on or preset As the measurement is displayed graphically on the meter the value is also displayed in small digits below the meter You can specify the high and low end points and display interval or you can use the default meter settings This f...

Page 63: ...nd unit of measure directly using the keypad or b press the Cursor Control knob or ENTER to highlight the field and use the knob or c use the down arrow or the up arrow keys to increment or decrement the present value Decimal Values Decimal values are used for most numeric entry fields such as the RF Gen Freq setting The acceptable entries for decimal values are 0 through 9 and EEX The key is used...

Page 64: ...ld To Enter and Change the Unit of Measure Entering the Unit of Measure for Settings When a number is entered the unit of measure is either specified or implied When the unit is implied the current unit is used For example if the present RF frequency is 250 MHz and you want to change it to 225 MHz you would enter this sequence 2 2 5 ENTER When the unit is specified the units change to whatever you...

Page 65: ... are incrementing decrementing For instance if the RF Generator Amplitude setting is displayed in dBµV you could increment in units of dB or mV To change the increment value 1 Move the cursor to the numeric entry field to be changed 2 Press INCR SET and enter the desired value and unit of measure using the DATA keys 3 Use the down arrow and up arrow keys or CURSOR CONTROL knob to change the field ...

Page 66: ...ection If HP IB is selected enter the HP IB Printer Address of the printer 3 Select the type of printer you are using in the Model field If your printer is not listed configure your printer to emulate one that is listed 4 Enter a Print Title using the knob if desired This text will appear at the top of your printout 5 Display the screen you want to print and press and release the SHIFT key then th...

Page 67: ...display while you are making an adjustment on the equipment you are testing or repairing They are also a convenient way of alerting you to long term measurement drift without having to observe the screen To Set A HI and or LO LIMIT 1 Position the cursor in front of the unit of measure for the measurement that you are set ting limits for 2 Press and release the SHIFT key then the down arrow key to ...

Page 68: ...asure for the assigned limit 2 Press and release the SHIFT key then the down arrow or up arrow key to access the LO LIMIT or HI LIMIT function then press ON OFF Example of Setting HI and LO LIMITs This example sets limits for the TX Freq Error measurement Limits are being set to indicate if a 100 MHz carrier varies more than 10 kHz 1 Position the cursor in front of the unit of measure for the TX F...

Page 69: ...y When the averaging function is first enabled a numeric average is calculated and displayed each time a measurement is made This continues until the specified number of samples is reached From that point on the averaging function performs an exponential filtering operation that mimics an RC filter Because of the exponential response any large measurement changes result in a displayed value that r...

Page 70: ...ed value to the reference value is displayed in dB To Use the Present Value as a Reference Position the cursor in front of the unit of measure for the measurement you want to set the reference for 1 Press and release the SHIFT key then the INCR 10 key to access the REF SET func tion then press enter ENTER 2 Ref appears below the measurement The measurement displayed is now referenced to the measur...

Page 71: ...o save files SRAM cards provide removable read write memory for your files similar to a flexible disk Data can be stored re stored read or erased as needed SRAM memory cards require a battery to maintain stored information Table 5 Memory Card Part Numbers Memory Type Part Number 32 kilobytes SRAM HP 85700A 128 kilobytes OTP HP 85701A 128 kilobytes SRAM HP 85702A 256 kilobytes OTP HP 85703A 256 kil...

Page 72: ...w to insert a memory card into the Test Set s front panel To remove a memory card simply pull it out The Test Set s memory card label is marked with an arrow that must be inserted on the same side as the arrow shown on the front panel slot Memory cards may be inserted and removed with the Test Set powered on or off Figure 9 Inserting a Memory Card ...

Page 73: ...er secure its contents from being overwritten or erased The switch has two positions see figure 10 Read write The memory card contents can be changed or erased and new files may written on the card Read only The memory card contents can be read by the Test Set but cannot be changed or erased Figure 10 Setting the SRAM Write Protect Switch ...

Page 74: ... Battery Turn the Test Set on and insert the memory card An inserted memory card takes power from the Test Set preventing the card s contents from being lost 5 Hold the memory card in the slot with one hand and pull the battery holder out with your other hand See figure 11 6 Install the battery with the side marked on the same side marked on the battery holder Avoid touching the flat sides of the ...

Page 75: ...tored on the internal ROM Disk can be used to quickly initialize any SRAM memory card SRAM Memory Cards can also be initialized from the TESTS screen by inserting the memory card into the front panel slot and selecting the Save Delete field then selecting Init Card or pressing the k3 USER key to initialize a card Follow the on screen instructions to complete the process If the error message ERROR ...

Page 76: ... to clear them from memory see Memory Considerations on page 79 for running large programs or when a firmware upgrade is performed see Save Recall on page 441 To Save an Instrument Setup Use the More menu to access the I O CONFIGURE screen 1 Select the storage media using the Save Recall field The default is internal mem ory 2 Make any changes to the instrument that you want to save in a register ...

Page 77: ...Press PRESET and wait for the instrument to return to normal operation 6 If not already displayed access the RX TEST screen Notice that the RF Gen Freq and Amplitude settings are reset to their preset values 7 Press RECALL 1 2 3 ENTER The RF Gen Freq and Amplitude are changed to the settings you saved in register 123 500 MHz and 35 dBm To Remove Clear an Individual Save Register Specify where the ...

Page 78: ...gs For instance if you want to save a setup for testing a Vulcan7 radio you can save the setting as VULCAN7 Two register names are reserved for special purposes POWERON and BASE POWERON Settings When the Test Set is turned on it uses a set of instrument setup parameters specified at the time of manufacture You can have the instrument power up in a different state by making the desired changes to t...

Page 79: ...nces between the setup being saved and the present base register settings changing the base settings causes all other saved setups to be erased from memory including the POWERON setting if one has been saved Unless you consistently change the same fields to the same value each time you use the instrument you should avoid creating your own BASE settings Memory Considerations When the Save Recall fi...

Page 80: ...inating the need to turn and push the knob Five local user keys are available for each screen k1 k2 k3 k4 and k5 Five factory assigned local user keys are available in each screen however using these keys removes any other local user keys you may have already set up Global user keys are used to access settings that are not available on the current screen Three global user keys are available k1 k2 ...

Page 81: ... numbers 1 through 5 appear in front of various fields See figure 12 2 Press the different local user keys k1 to k5 and notice how the cursor immediately moves to the corresponding field 3 To stop using the default local user keys press and release the SHIFT key then the k5 key to access the RELEASE function then press the ENTER key Figure 12 An Example of Pre Assigned Local User Keys scnusr wmf ...

Page 82: ...een 1 Access the RX TEST screen and position the cursor in front of the Filter 1 field 2 Press and release the SHIFT key then the k4 key to access the ASSIGN function then press k1 A small 1 appears next to the field indicating that USER key k1 has been as signed to it 3 Move the cursor to any other field on the screen and press k1 The cursor immediately returns to the Filter 1 field The field is ...

Page 83: ...nd release the SHIFT key then the k4 key to access the ASSIGN function 3 Press SHIFT k1 Notice the prompt Global User key 1 assigned at the top of the screen 4 Access the OSCILLOSCOPE screen 5 Press SHIFT k1 AF Anl Input FM Demod is displayed at the top of the screen assuming the present input is set to FM Demod To change the input use the arrow keys down arrow or up arrow or press ENTER to access...

Page 84: ...r Control knob or press ENTER to turn the offset On or Off 3 Select the Gen Anl field and enter the frequency offset value Example of Setting an RF Offset 1 Access the CONFIGURE screen 2 Set the RF Offset to On 3 Enter an offset frequency Gen Anl of 10 MHz 4 Access the DUPLEX screen 5 Set the Tune Mode to Manual 1 6 Select the RF Gen Freq field and rotate the Cursor Control knob to vary the RF Gen...

Page 85: ...rt Using HP IB Control The Programmer s Guide contains information on writing HP IB control programs for the Test Set Programming examples and a syntax listing provide general HP IB operation guidelines Running IBASIC Programs from Memory Cards The documentation shipped with HP 11807 software packages explains how to run those programs from memory cards Refer to the Programmer s Guide for detailed...

Page 86: ... O CONFIGURE screen 2 Set the Serial In field to Inst 3 Set the IBASIC Echo field to On 4 Set the Inst Echo field to On 5 Set the remaining serial communications fields according to your terminal computer s serial communication requirements These fields include Serial Baud Parity Data Length Stop Length Rcv Pace Xmt Pace 6 The Test Set now responds to the equivalent characters sent to it by the te...

Page 87: ...ACE NO_PPM_W ENTER RX a RELEASE 0 TX b K1 1 DUPLEX c K2 2 PREV d K3 3 TESTS_MAIN e K4 4 LOCAL f K5 5 RECALL g K1_PRIME 6 MEAS_RESET h K2_PRIME 7 PRESET i K3_PRIME 8 INCR_DIV_10 j ASSIGN 9 INCR_SET k KNOB_TURN_CCW INCR_TIMES_10 l KNOB_TURN_CW DOWN m MSSG A UP n HELP B SEVEN o CONFIG C EIGHT p HOLD D NINE q PRINT E FOUR r ADRS F FIVE s SAVE G SIX t REF_SET J ONE u METER K TWO v AVG L THREE w LO_LIMI...

Page 88: ...trol key and select the corresponding key for the desired function Example Cntl H moves the cursor to the left one space ENTER J or M CANCEL C BACKSPACE H KNOB_TURN_CW R KNOB_TURN_CCW L E R PLUS_MINUS z F S OHM_PCT_DEL_DBUV B U DB_GHZ_DBM C V MS_HZ_UV D W Table 6 Equivalent Front Panel Control Characters Continued Function Equivalent ESC Character Function Equivalent ESC Character ...

Page 89: ...ith Option 102 Spectrum Analyzer This screen is used to measure Adjacent Channel Power This is a measurement of the power of signals at a specific channel spacing above and below the RF Analyzer s center frequency This screen is accessed by selecting AD CH PWR from the To Screen menu ...

Page 90: ... to the center frequency s level Which Input Port to Use The TX Power measurement is used to calculate absolute Adjacent Channel Power Since TX Power can only be measured using the RF IN OUT port you must use this port to measure ACP Level ACP Ratio can be measured using either the RF IN OUT or the ANT IN port Measuring ACP on AM Transmitters When measuring AM signals the reference level must be m...

Page 91: ... frequency Tune Freq Levels can be displayed in dB or as a percentage Level displays the absolute power levels in mW W dBm V mV and dBmV Operating Considerations TX Power and ACP Level can only be measured through the RF IN OUT port Four dashes are displayed for these measurements when the Input Port is set to Ant ANT IN ACP Ratio can be measured on either the ANT IN port or RF IN OUT port For mor...

Page 92: ...or TX TEST screen overrides any changes made to this field in other screens See Also Interaction Between Screens on page 54 Carrier Ref Use the carrier reference field to indicate whether the carrier Tune Freq being measured should be unmodulated or modulated when making the ACP reference measurement For more information refer to How the Test Set Measures Adjacent Channel Power ACP on page 90 Oper...

Page 93: ...93 Chapter 4 Adjacent Channel Power Screen Field Descriptions Figure 14 Relationship Between Tune Freq Ch Offset and Channel BW Fields adchpwr1 wmf ...

Page 94: ...C ACC on page 568 Input Atten Input Attenuation sets the amount of input attenuation for the RF IN OUT and ANT IN connectors This function controls two settings The upper field determines if you want the instrument to set the attenuation automati cally Auto or if you want to set the value manually Hold The lower field displays the present attenuation value and is used to set the desired at tenuati...

Page 95: ...enna input connector provides a highly sensitive input for very low level signals such as off the air measurements You cannot measure TX RF Power or ACP Level on this screen using the ANT IN port CAUTION Connecting a signal of 200 mW to the ANT IN port can cause instrument damage although internal protection circuits can typically withstand a short duration signal of 1 or 2 Watts If the overpower ...

Page 96: ...the measurement when measuring at the edges of the selected channel bandwidth Tune Freq This field sets the center frequency for the RF signal to be analyzed See Also Tune Mode field description this page Tune Mode This field selects Automatic or Manual tuning of the RF Analyzer Auto tuning causes the RF Analyzer to find the signal with the greatest amplitude 36 dBm and to set the Tune Frequency f...

Page 97: ...tional on some Test Set models TX Pwr Zero The transmitter power zero function establishes a 0 0000 W reference for measuring RF power at the RF IN OUT port CAUTION RF power must not be applied while zeroing Set the RF Generator screen s Amplitude field to off to prevent internal cross coupling into the power detector while zeroing Operating Considerations When power is applied to the RF IN OUT co...

Page 98: ...98 S HP892XX USRGUIDE manual acpscrn fb Chapter 4 Adjacent Channel Power Screen Field Descriptions ...

Page 99: ...99 5 AF Analyzer Screen ...

Page 100: ...HDNHU 9RO 3RW 2II 92 80 6SHDNHU 2Q 2 0HDVXUHPHQW 1RWFK H PS LOWHUV QSXW X6 QSXW LOWHUV LOWHUV H PS 3N HW 7R LOWHUV 506 506 6457 3 3 3 3 ROG 3 ROG 3 G 3 0 G 3 0D 7R QWHUQDO 9ROWPHWHU HYHO 6 1 LVWRUWLRQ 0 HPRG 0 HPRG 66 HPRG XGLR 2XW 5DGLR QW W 0RG 0LF 0RG 0 0RG 0 0RG XGLR Q URP LOWHUV URP 8 2 2XW URP 5DGLR QWHUIDFH 5HDU SDQHO 0RG Q URP 0 URP 0 0 0RGXODWRUV URP 8 2 Q L 506 7R QWHUQDO 9ROWPHWHU XUUHQ...

Page 101: ...urement on this screen is always the AUDIO IN connectors See Also Entering and Changing Numbers on page 63 AF Anl In The audio frequency analyzer input selects the input for the analyzer When selected this field displays a list of choices Signals can be analyzed from three different types of inputs The output of the AM FM or SSB demodulators The AUDIO IN RADIO INTERFACE MODULATION INPUT MIC ACC an...

Page 102: ...to Noise Ratio AF Frequency DC Level Current DC only The HP 8920A requires Current Measurement option Operating Con siderations This is a priority control field Accessing the RX TEST or TX TEST screen overrides any changes made to this field in other screens SNR Operation Selecting SNR turns off the other audio measurement The RF Generator and AFGen1 must be set up to provide the radio s carrier A...

Page 103: ... since the load is now fixed to 600 ohms Current The Current field is found by selecting the SINAD field on the Test Set display of the AF ANALYZER screen This field only displays the DC current measured at the DC input port on the back of the Test Set Any offset can be removed by selecting Zero from the DC Current field DC Current DC current measurement zero removes any measurement offset present...

Page 104: ...s gain displays and selects the desired AF analyzer de emphasis amplifier gain See Also Gain Cntl field description on page 107 De Emphasis This setting selects or bypasses the 750 ms de emphasis networks in the audio analyzer and speaker circuitry See Also Interaction Between Screens on page 54 Distn This field displays the percent of distortion The Distortion measurement is only for a 1 kHz sign...

Page 105: ...measurement is reset To reset press the MEAS RESET key select a different detector or re select the same detector Pk Hold displays and holds the negative peak value until the measurement is reset To reset press the MEAS RESET key select a different detector or re select the same detector Pk 2 Hold divides the sum of the positive and negative peak values by 2 and displays the value until the measur...

Page 106: ...ternally fixed to 600 ohms See Also AC Level field description on page 101 Audio In Lo field description on page 103 Filter 1 and Filter 2 Filters 1 and 2 select a variety of standard and optional filters Selecting either field lists the choices available for that field FM Deviation This is the default measurement for this field The FM Deviation field displays the frequency deviation between the F...

Page 107: ...ed gain settings manually for each measurement NOTE Decoder and Oscilloscope Interference The AF autoranging function Auto takes a small amount of time to determine the attenuation settings for the AF Analyzer If you are decoding an encoded signal and your transmitter begins sending encoded information the instant it transmits the initial encoded information may not be decoded during the autorangi...

Page 108: ...ngs A warning message is then displayed if you attempt to set the AFGen1 Freq value outside the 300 Hz to 10 kHz range of this filter When the Notch Coupl field is set to None this filter and AFGen1 Freq operate independently 1 Optional on some Test Sets Notch Gain This field displays and selects the gain of the AF Analyzer s notch filter amplifier This amplifier is only used for making SINAD and ...

Page 109: ...tion when measuring low level signals See Also Figure 15 AF ANALYZER Functional Block Diagram on page 100 Settling This field selects the settling time for making AF measurements Lower frequency signals require additional settling time Slow Higher frequency measurements require less settling time Fast Operating Considerations Use Slow for 200 Hz signals Use Fast for 200 Hz signals If the signal be...

Page 110: ...R Operation Selecting SNR turns off the other audio measurement The RF Generator and AFGen1 must be set up to provide the radio s carrier AFGen1 is automatically turned on and off repeatedly during this measurement AFGen2 must be turned off The radio s receiver s audio output must be connected to the AUDIO IN port set the AF Anl In field to Audio In See Also Interaction Between Screens on page 54 ...

Page 111: ... on the signal level being measured Speaker Vol Speaker Volume enables disables the instrument s internal speaker When Pot is selected the VOLUME control knob operates normally When Off is selected the speaker is disconnected TX Freq Error TX Frequency This measurement area is used to display transmitter frequency error or transmitter frequency The type of measurement displayed depends on the Tune...

Page 112: ... to measure low level RF power 200 mW at the ANT IN port 1 Spectrum Analyzer is optional on some Test Set models CAUTION Connecting a signal of 200 mW to the ANT IN port can cause instrument damage although internal protection circuits can typically withstand a short duration signal of 1 or 2 Watts If the overpower circuit is triggered signified by a warning message at the top of the screen remove...

Page 113: ...113 6 Call Processing Subsystem ...

Page 114: ...mpletion of a call the encoding of signaling information for transmission to the base station such as dialed digits for call origination disconnect signal at the completion of a call or mobile identifi cation number the authentication signaling associated with AMPS IS 54 call processing such as shared secret data update unique challenge origination with authentication and page with authentication ...

Page 115: ...oice channel assigned to the mobile station Once the voice channel link is terminated the Test Set automatically re configures its transceiver back to being a control channel Handoffs are accomplished in a similar manner When a handoff is initiated while on a voice channel the Test Set sends the necessary information to the mobile station on the current voice channel At the proper time the Test Se...

Page 116: ...key pressed while on an active voice channel State Originate SEND key pressed while Roaming or in Service mode State Page Annunciator Page Meas RECCW A RECCW B RECCW C Page State Access Meas None Annunciator Access State Connected Meas RVCOrdCon Annunciator Connect TX Freq Error TX Power FM Deviation Meas RECCW A RECCW B RECCW C RECCW D RECCW E Release Handoff Phone Number ESN hexadecimal SCM Call...

Page 117: ...s screen The CALL DATA screen displays the decoded signaling messages received from the mobile station on the reverse control channel and the reverse voice channel Call pro cessing functions such as registration page and handoff can also be activated from this screen The transmit power of the mobile station can be set from this screen The CALL BIT screen allows the advanced user to modify the cont...

Page 118: ... page 119 shows a typical example of how to connect a mobile station to the Test Set You may need a special fixture to access the mobile station s antenna audio in and audio out signals These fixtures are available from the mobile station s manufacturer If any audio testing is to be done on the mobile station the audio input microphone input to the mobile station and the audio output speaker outpu...

Page 119: ...antenna of the mobile station to the ANT IN port on the front panel of the Test Set this will cause the overpower protection circuitry to trip when the mobile station is transmitting Refer to ANT IN on page 562 for further information ANT IN Manufacturer s Special Fixture AUDIO OUT RF IN OUT AUDIO IN LO HI Antenna Speaker Out Microphone In Mobile Station ...

Page 120: ...audio output in its proper load impedance Refer to the manufacturer s documentation for information on the termination supplied by the special fixture If a load impedance must be supplied then it can be placed across the AUDIO IN connector Refer to AUDIO IN on page 563 and chapter 5 AF Analyzer Screen on page 99 for further information 600 Ohm Impedance Some industry standards require the audio ou...

Page 121: ...n page 143 Register a Mobile Station on page 144 Page a Mobile Station on page 145 Handoff a Mobile Station to a New Voice Channel on page 147 Release A Mobile Station on page 147 Change the Transmit Power Level of a Mobile Station on page 148 Originate a Call from a Mobile Station on page 149 Send an Alert Order to a Mobile Station on page 150 Changing the Content of a Message Field on page 242 S...

Page 122: ...ual callscrn fb Chapter 6 Call Processing Subsystem The CALL CONTROL Screen The CALL CONTROL Screen Figure 18 The CALL CONTROL Screen The number of fields displayed on the CALL CONTROL screen depends on the selected system type ...

Page 123: ...y field Refer to the Display field description on page 127 for further information Access When lit the Access annunciator indicates the Test Set is signaling the mobile station with command information on the forward voice channel This is a transitory state The Test Set s speaker is turned off when in the access state This is done to eliminate any possible audio feedback which may occur if the mob...

Page 124: ...station Four dashes indicate that no audio frequency is present to measure A numeric value would only be displayed when the Test Set s Connected annunciator is lit connected state Amplitude This field is used to set the output power of the Test Set s transmitter that is the output power of the Test Set s RF Generator Called Number This field displays the called phone number in decimal form receive...

Page 125: ...e mobile station A numeric value would only be displayed when the Test Set s Connected annunciator is lit connected state A is displayed if a mobile station is not actively connected on a voice channel The right hand field highlighted field is used to enter the voice channel number which will be assigned to the mobile station by the Test Set as either an initial voice channel assignment or as a ha...

Page 126: ...tate is set to Active Connect When lit the Connect annunciator indicates that the mobile station is connected to the Test Set on a voice channel NOTE When the CALL CONTROL screen is displayed and the Call Processing Subsystem is in the connected state Connect annunciator is lit the Test Set constantly monitors the mobile station s transmitted carrier power If the power falls below 0 0005 Watts the...

Page 127: ...transmission bandwidth 20 MHz or 25 MHz The decoded Order Confirmation Message is available from the reverse voice chan nel Select Meas to display modulation quality measurements made on the mobile station s RF carrier while on a voice channel and For system types AMPS TACS JTACS and wide channel NAMPS four characteristics of the RF carrier are measured TX Freq Error TX Power FM Deviation and AF F...

Page 128: ...128 S HP892XX USRGUIDE manual callscrn fb Chapter 6 Call Processing Subsystem The CALL CONTROL Screen Figure 19 CALL CONTROL Screen with Decoding Error Message Display ...

Page 129: ...129 Chapter 6 Call Processing Subsystem The CALL CONTROL Screen Figure 20 AMPS CALL CONTROL Screen with Meas Selected ...

Page 130: ...ng broadcast by the Test Set The DSAT channel number identifier is displayed only when the Test Set s Connected annunciator is lit connected state A is displayed if a mobile station is not actively connected on a voice channel The right hand field highlighted field is used to select one of the seven valid DSAT sequences to be used on the voice channel See Chan field description on page 125 for mor...

Page 131: ...nnel in response to a forward control channel message The ESN dec field is displayed only when the Display field is set to Data and a reverse control channel message containing this information has been decoded ESN hex This field displays the electronic serial number ESN in hexadecimal form received from the mobile station on the reverse control channel in response to a forward control channel mes...

Page 132: ...the mobile station The MS Id has two fields The upper field is a one of many selection field and is used to select the format for entering the identification number The lower field is a numeric entry field and is used to enter the identification number in the format selected using the upper field The contents of the lower field are automatically updated upon successful completion of a mobile stati...

Page 133: ...CALL CONTROL Screen NOTE The preset values for the MS Id fields are Phone Num 1111111111 MIN2 MIN1 000000400 An all zero MIN number 000000000 which does not represent a valid phone number will be converted to the following phone number 111111 111 ...

Page 134: ...on The Access annunciator will light momentarily while the Test Set is sending the mobile station control message Pwr Lvl Pwr Lvl is divided into two fields The left hand field displays the mobile station s output power level assigned to the voice channel being used by the Test Set and the mobile station A numeric value is displayed only when a mobile station is actively connected on a voice chann...

Page 135: ...0000 which does not represent a valid phone number will convert to the following phone number 111111 111 Register This field is used to initiate a registration of the mobile station that is connected to the Test Set The Test Set must be in the active state that is the Active annunciator must be lit before you can attempt to register the mobile station Register When lit the Register annunciator ind...

Page 136: ... the Display field is set to Data and a reverse control channel message has been decoded SID This field is used to set the system identification number SID of the Test Set The SID field is an immediate action field If the field is selected and changed the signaling message s being sent on the forward control channel are immediately changed No change occurs to the current state that is active regis...

Page 137: ...arrier frequency measured carrier frequency of the RF carrier being transmitted by the mobile station Four dashes indicate that no RF carrier is present to measure A numeric value would only be displayed in the connected state that is the Connect annunciator is lit The TX Freq Error field is displayed only when the Display field is set to Meas ...

Page 138: ...obile station s transmitted carrier power is constantly monitored If the power falls below 0 0005 Watts the error message RF Power Loss indicates loss of Voice Channel will be displayed and the Test Set will terminate the call and return to the active state Active annunciator is lit In order to ensure that the Test Set makes the correct decisions regarding the presence of the mobile stations s RF ...

Page 139: ...e Station with authentication active The VC Order field is only visible when authentication is activated and the mobile is assigned a voice channel The orders available are Change Power to Power Level 0 7 Maintenance put the mobile station in maintenance mode Alert alert the mobile station SSD Update shared secret data update Uniq Ch unique challenge ...

Page 140: ...all Processing field description on page 141 Configure the Test Set field description on page 142 Turn On The Test Set s Control Channel field description on page 143 Register a Mobile Station field description on page 144 Page a Mobile Station field description on page 145 Handoff a Mobile Station to a New Voice Channel field description on page 147 Release A Mobile Station field description on p...

Page 141: ...d to On There are two reasons for zeroing the RF power meter When any Call Processing Subsystem screen is displayed except the ANALOG MEAS screen and the Call Processing Subsystem is in the connected state Con nect annunciator is lit the Test Set constantly monitors the mobile station s trans mitted carrier power If the power falls below 0 0005 Watts the error message RF Power Loss indicates loss ...

Page 142: ...ype field was modified in step3 a the control channel will become active since modifying this field automatically activates the control channel Refer to the System Type field description on page 136 b Cntl Channel Set the control channel number to be used by the Test Set NOTE If the Cntl Channel field was modified in step 3 b the control channel will become active since modifying this field automa...

Page 143: ...FIGURATION screen will be displayed 5 Verify that the Test Set s configuration information is appropriate for the mobile station to be tested Check the following fields a CMAX Set the number of access channels in the system This will determine how many channels must be scanned by the mobile station when trying to access the Test Set The value of this field will affect the time required for the mob...

Page 144: ...is not displayed select CALL CNTL from the To Screen menu The CALL CONTROL screen will be displayed 4 Position the cursor on the Display field and select Data 5 Select the Register field The Register annunciator will light while the registration is in process If the mobile station responds properly on the reverse control channel the message RECC Return will flash momentarily in the upper right han...

Page 145: ... on the Display field and select Data 6 Ensure that the mobile station has registered with the Test Set See Register a Mobile Station on page 144 for information on how to register the mobile station 7 Select the Page field The Page annunciator will light while the Test Set pages the mobile on the forward control channel If the mobile station responds properly on the reverse control channel the me...

Page 146: ...ation identification number either the phone number or the MIN number depending upon what the upper MS Id field is set to 7 Select the Page field The Page annunciator will light while the Test Set pages the mobile on the forward control channel If the mobile station responds properly on the reverse control channel the message RECC Return will flash momentarily in the upper right hand corner of the...

Page 147: ...f information If the mobile responds properly it will stop transmitting on the current voice channel switch to the new voice channel and transpond the newly assigned SAT frequency When the Test Set detects this has happened the Connect annunciator is lit indicating that the handoff was successful The Voice Channel Assignment section will be updated that is any in the left hand fields will be repla...

Page 148: ...hanged as desired 3 Select the Order field and select it A Choices menu is displayed showing the var ious power levels which the mobile station can be set to Select the desired power level from the Choices menu The Test Set will then signal the mobile station with an or der to set its power level If the mobile responds properly the measured value in the TX Power field will change 4 Position the cu...

Page 149: ...est Set on the reverse control channel with an origination message which includes the dialed phone number the mobile station s MIN number and the mobile station s ESN If the mobile station transmitted properly on the reverse control channel the message RECC Return will flash momentarily in the upper right hand corner of the CALL CONTROL screen and then the mobile station phone number ESN decoded S...

Page 150: ...ection will display a while the Test Set is in the access state 3 Select the Order field A Choices menu is displayed showing the various orders which can be sent to the mobile station Position the cursor next to the Alert order and select it The Test Set will then signal the mobile station with an alert order If the mobile station is responding properly it will alert that is it will ring Press the...

Page 151: ...eces of shared secret data SSD to confirm a valid call The first piece is the ESN of the mobile station and the second piece is the mobile station s A key The A key is a secret 26 digit number stored in the mobile station s semi permanent memory The following sections describe how to Condition the Test Set for Call Processing with Authentication Configure the Test Set for authentication Turn On Th...

Page 152: ... below 0 0005 Watts the error message RF Power Loss indicates loss of Voice Channel will be displayed and the Test Set will terminate the call and return to the active state Zeroing the power meter cancels any inherent dc offsets that may be present within the power meter under zero power conditions This ensures that the Test Set makes the correct decisions regarding the presence of the mobile sta...

Page 153: ...f the Test Set s RF Generator d SID Enter the system identification number of the Test Set as a decimal number e Chan right hand field Enter the voice channel number which will be assigned to the mobile station by the Test Set as either an initial voice channel assignment or as a handoff voice channel assignment f Pwr Lvl right hand field Enter the Voice Mobile Attenuation Code VMAC The VMAC deter...

Page 154: ...ontrol Channel on page 154 for information on how to activate the Test Set 2 Connect the mobile station to the Test Set as shown in Figure 17 Connecting a Mobile Station to the Test Set on page 119 3 Turn on the mobile station 4 If the CALL CONTROL screen is not displayed select CALL CNTL under the To Screen menu The CALL CONTROL screen will be displayed 5 Position the cursor on the Display field ...

Page 155: ...select CALL CNTL from the To Screen menu The CALL CONTROL screen will be displayed 5 Position the cursor on the Display field and select Data 6 Select the upper MS ID field and then select MIN2 MIN1 from the Choices menu 7 Select the lower MS ID field and enter the information in hexadecimal format 8 Select AUTHEN from the To Screen menu The AUTHENTICATION screen will be displayed 9 Select the A_K...

Page 156: ...he mobile station 7 Select the Page field The Page annunciator will light while the Test Set pages the mobile on the forward control channel If the mobile station responds properly on the reverse control channel the message RECC Return will flash momentarily in the upper right hand corner of the CALL CONTROL screen The Access annunciator will then light while the Test Set sends the mobile station ...

Page 157: ...includes the dialed phone number the mobile station s MIN number and the mobile station s ESN If the mobile station transmitted properly on the reverse control channel the message RECC Return will flash momentarily in the upper right hand corner of the CALL CONTROL screen and then the mobile station s phone number ESN decoded SCM and called phone number will be displayed The Test Set will then rec...

Page 158: ...tication See Initialize Call Processing with Authentication on page 154 for information on how to register the mobile station and activate Authentication 7 Select AUTHEN on the To Screen meun The AUTHENTICATION screen will be displayed 8 Select RANDSSD_1 field Enter a new valid RANDSSD_1 value 6 digit hexadecimal 9 Select RANDSSD_2 field Enter a new valid RANDSSD_2 value 6 digit hexadecimal 10 Sel...

Page 159: ...egister the mobile station and activate Authentication 7 Ensure that the mobile station is on a voice channel See Page a Mobile Station with Authentication on page 156 8 Select AUTHEN from the To Screen menu The AUTHENTICATION screen will be displayed 9 Select the RANDSSD_1 field Enter a new valid RANDSSD_1 value 6 digit hexadecimal 10 Select the RANDSSD_2 field Enter a new valid RANDSSD_2 value 6...

Page 160: ...CALL CONTROL screen will be displayed 5 Position the cursor on the Display field and select Data 6 Ensure that the Test Set has Initialized Call Processing with Authentication See Initialize Call Processing with Authentication on page 154 for information on how to register the mobile station and activate Authentication 7 Select AUTHEN on the To Screen menu The AUTENTICATION will be displayed 8 Sel...

Page 161: ...ize Call Processing with Authentication on page 154 for information on how to register the mobile station and activate Authentication 7 Ensure that the mobile station is assigned an active voice channel See Page a Mobile Station with Authentication on page 156 8 Select AUTHEN from the To Screen menu The AUTHENTICATION screen will be displayed 9 Select the RAND_U field Enter a new valid RAND_U valu...

Page 162: ...en AUTHENTICATION Screen Figure 22 The AUTHENTICATION Screen The AUTHENTICATION screen allows you to enter parameters for authentication into the Test Set These parameters are used by the Cave algorithm during Call Processing functions such as registration page and originate to verify a valid call ...

Page 163: ...t to On the Test Set issues system parameter overhead messages including SPC WORD1 SPC WORD2 ACCESS RandChalA and RandChalB to the mobile station ESN This field is used to enter the electronic serial number ESN of the mobile station There are two methods which can be used to enter the ESN The serial number can be entered as an 8 digit hexadecimal value directly into this field or it can be capture...

Page 164: ... significant bits of the random number issued by the base station in the SSD Update Order RANDSSD_3 is entered as a 3 digit hexadecimal value RAND_U RAND_U is the 24 bit random number issued by the base station in the Unique Challenge Order RAND_U is entered as a 6 digit hexadecimal value RAND__U is user definable 1 of N The 1 of N field instructs the Test Set how many times to send a system param...

Page 165: ...ssages can be viewed on this screen The message to be viewed is selected using the Display Word field The messages which can be viewed are Reverse Control Channel Messages for Paging Origination Orders and Order Confir mation RECCW A Word A Abbreviated Address Word RECCW B Word B Extended Address Word RECCW C Word C Serial Number Word RECCW D Word D First Word of the Called Address RECCW E Word E ...

Page 166: ...Test Set constantly monitors the mobile station s transmitted carrier power If the power falls below 0 0005Watts the error message RF Power Loss indicates loss of Voice Channel will be displayed and the Test Set will terminate the call and return to the active state NOTE In order to ensure that the Test Set makes the correct decisions regarding the presence of the mobile stations s RF carrier the ...

Page 167: ...nel of the Test Set is turned on If this annunciator is lit the base station is transmitting system parameter overhead messages on the assigned control channel If the annunciator is not lit the base station is not active NOTE The Test Set may still be outputting a modulated RF carrier but the Test Set s firmware is not active and no communication can occur between a mobile station and the Test Set...

Page 168: ...equency to transpond on the new voice channel are specified using the Chan Pwr Lvl and SAT fields in the Voice Channel Assignment section of the CALL CONTROL screen Order This field is used to send an order on the forward voice channel to the mobile station The orders available are Change Power to Power Level 0 7 MRI issues a request for mobile reported interference report NAMPS system type only M...

Page 169: ...the mobile station connected to the Test Set The Test Set must be in the active state that is the Active annunciator lit before you can attempt to register a mobile station Register When lit the Register annunciator indicates that the mobile station connected to the Test Set is being commanded to register with the base station Release This field is used to terminate an active voice channel connect...

Page 170: ...CCW A Message Fields Figure 24 RECCW A Message Fields F This field displays the first word indication received from the mobile station A 1 indicates that this is the first word A 0 is displayed for all subsequent words NAWC This field displays the number of additional words coming from the mobile station T This field displays the message type received from the mobile station Set to 1 to identify t...

Page 171: ...sent E This field displays the extended address word received from the mobile Set to 1 if the extended address word is sent Set to 0 if the extended address word is not sent RSVD This field is reserved for future use SCM This field displays the mobile station s received station class mark MIN1 This field displays the first part of the mobile identification number received from the mobile station P...

Page 172: ...displayed for all subsequent words NAWC This field displays the number of additional words coming from the mobile LOCAL This field displays the local control field This field is specific to each system The ORDER field must be set to local control for this field to be interpreted by the Test Set ORDQ This field displays the received order qualifier The field qualifies the order confirmation to a sp...

Page 173: ...ssage Field Descriptions LT This field displays the last try code field RSVD Reserved for future use MIN2 This field displays the second part of the mobile identification number received by the Test Set Parity This field displays the parity of the received data ...

Page 174: ...elds F This field displays the first word indication received from the mobile station A 1 indicates that this is the first word A 0 is displayed for all subsequent words NAWC This field displays the number of additional words coming from the mobile Serial This field displays the serial number of the mobile station Parity This field displays the parity of the received data ...

Page 175: ...d indication received from the mobile station A 1 indicates that this is the first word A 0 is displayed for all subsequent words NAWC This field displays the number of additional words coming from the mobile Dig 1 through Dig 8 These fields display digits 1 through 8 of the phone number dialed on the mobile station Parity This field displays the parity of the received data ...

Page 176: ...lays the first word indication received from the mobile station A 1 indicates that this is the first word A 0 is displayed for all subsequent words NAWC This field displays the number of additional words coming from the mobile Dig 9 through Dig 16 These fields display digits 9 through 16 of the phone number dialed on the mobile station Parity This field displays the parity of the received data ...

Page 177: ... all subsequent words NAWC This field displays the number of additional words coming from the mobile T This field displays the message type received from the mobile station Set to 1 to identify the message as an origination or an order Set to 0 to identify the message as an order response or page response Local This field displays the local control field This field is specific to each system The O...

Page 178: ...ys the Order field and identifies the order type received by the Test Set RSVD Reserved for future use Parity This field displays the parity of the received data BSChalOrd Message Fields Figure 30 BSChalOrd Message Fields F This field displays the first word indication received from the mobile station A 1 indicates that this is the first word A 0 is displayed for all subsequent words NAWC This fie...

Page 179: ... F This field displays the first word indication received from the mobile station A 1 indicates that this is the first word A 0 is displayed for all subsequent words NAWC This field displays the number of additional words coming from the mobile COUNT This field displays the modulo 64 count maintained by the mobile station and used for authentication and anti fraud purposes RANDC This field display...

Page 180: ...eceived data UniqChCon Message Fields Figure 32 UniqChCon Message Fields F This field displays the first word indication received from the mobile station A 1 indicates that this is the first word A 0 is displayed for all subsequent words NAWC This field displays the number of additional words coming from the mobile RSVD Reserved for future use AUTHR This field displays the output of the authentica...

Page 181: ...rder could be unique to the particular mobile station model or manufacturer F This field displays the first word indication received from the mobile station A 1 indicates that this is the first word A 0 is displayed for all subsequent words NAWC This field displays the number of additional words coming from the mobile T This field displays the message type received from the mobile station Set to 1...

Page 182: ...e set to local control for this field to be interpreted by the Test Set ORDQ This field displays the received order qualifier The field qualifies the order confirmation to a specific action Order This field displays the Order field and identifies the order type received by the Test Set RSVD Reserved for future use Parity This field displays the parity of the received data RVCBSChal Message Fields ...

Page 183: ...d displays the number of additional words coming from the mobile T This field displays the message type received from the mobile station Set to 1 to identify the message as an origination or an order Set to 0 to identify the message as an order response or page response RANDBS This field displays the random number use in the SSD update procedure Parity This field displays the parity of the receive...

Page 184: ...ific to each system The ORDER field must be set to local control for this field to be interpreted by the Test Set ORDQ This field displays the received order qualifier The field qualifies the order confirmation to a specific action Order This field displays the Order field and identifies the order type received by the Test Set DSCC This field displays the current DSAT Color Code being transmitted ...

Page 185: ... Processing Subsystem CALL DATA Screen Message Field Descriptions OE The Odd Even data field is used for adjacent channel protection RSVD Reserved for future use Parity This field displays the parity of the received data ...

Page 186: ...upper right hand corner of the CALL CONTROL screen The Active annunciator will light when the registration has successfully completed 8 Select the Display Word field A list of reverse channel words which can be displayed will appear in a Choices menu Select the desired word from the list of choices The decoded contents for each of the fields in the selected word will be displayed in the lower port...

Page 187: ...7 Ensure that the mobile station has registered with the Test Set See Register a Mobile Station on page 144 for information on how to register the mobile station 8 Select the Page field The Page annunciator will light while the Test Set pages the mobile on the forward control channel If the mobile station responds properly on the reverse control channel the message RECC Return will flash momentari...

Page 188: ...ayed select CALL CNTL under the To Screen menu The CALL CONTROL screen will be displayed 6 Select the lower MS Id field Enter the mobile station identification number either the phone number or the MIN number depending upon what the upper MS Id field is set to 7 Select CALL DATA from the To Screen menu The CALL DATA screen will be displayed 8 Select the Active field The Active annunciator will lig...

Page 189: ...already done condition the Test Set See Conditioning the Test Set for Call Processing on page 141 for further information 2 If not already done configure the Test Set See Configure the Test Set on page 142 for further information 3 Connect the mobile station to the Test Set as shown in Figure 17 Connecting a Mobile Station to the Test Set on page 119 4 Turn on the mobile station 5 Ensure that the ...

Page 190: ...e fields in the selected word will be displayed in the lower portion of the display 13 If a word is chosen which was not part of the decoded reverse channel s message stream all the fields will be blank when it is displayed See CALL DATA Screen Message Field Descriptions on page 170 for a description of each of the available reverse channel words Step 11 and step 12 in the above procedure can be r...

Page 191: ...ure itself for transmission on the forward control channel begin to transmit system parameter overhead messages and the Active annunciator will light 8 Select the Display Word field A list of reverse channel words which can be displayed will appear in a Choices menu Select the desired word from the list of choices The decoded contents for each of the fields in the selected word will be displayed i...

Page 192: ... the mobile responds properly the message REVC Return will flash momentarily in the upper right hand corner of the CALL CONTROL screen The Connect annunciator will light when signaling is complete 8 Select the Display Word field A list of reverse channel words which can be displayed will be presented Position the cursor on the desired word and select it The decoded contents for each of the fields ...

Page 193: ...gnments set up in the Voice Channel Assignment section of the CALL CONTROL screen The Access annunciator will then light while the Test Set signals the mobile station on the assigned voice channel The Connect annunciator will light if the mobile station properly signals the Test Set on the reverse voice channel The mobile station is now connected to the Test Set on the assigned voice channel 8 Sel...

Page 194: ...ssing messaging protocol A messaging protocol is defined as the sequence of messages sent from the Test Set to the mobile station to perform a desired action such as registering a mobile station Modifying the contents of one or more messages may be required for testing the robustness of a mobile station s call processing algorithms or for new product development Using the CALL BIT screen requires ...

Page 195: ...ect messages at the correct times as defined in the applicable industry standard Message content is the responsibility of the user When the CALL BIT screen is displayed and the Call Processing Subsystem is in the connected state the Test Set constantly monitors the station s transmitted carrier power If the Power falls below 0 0005 Watts the error message RF Power Loss indicates loss of Voice Chan...

Page 196: ...rol message Word 1 Abbreviated Address Word MS IntVCh FCC mobile station control message Word 2 Extended Address Word Voice Channel Assignment MSMessOrd FCC mobile station control message Word 2 Extended Address Word Order FVC V Mes FVC Mobile Station Control Voice Channel Assignment Message FVC O Mes FVC Mobile Station Control Order Message Forward Control Channel Authentication Messages RandChal...

Page 197: ... Active This field is used to turn on the forward control channel of the Test Set or to force a return to the active state from any other state register page access connect If the forward control channel of the Test Set is already active selecting this field will deactivate and then reactivate the control channel Active When lit the Active annunciator indicates that the control channel of the Test...

Page 198: ...he contents of the applicable fields on the CALL CONTROL screen and the CALL CONFIGURE screen are not updated to reflect any changes made while in the Bits mode There is no coupling between the Bits mode and the Test Set For example if a mobile sta tion was actively connected to the Test Set on a voice channel and the user changed the CHAN field on the forward voice channel mobile station control ...

Page 199: ...e mobile station control message A mobile station must be actively connected on a voice channel to the Test Set that is the Connect annunciator lit before you can attempt to send an order to a mobile station When Authent is set to ON the Order field is not displayed Page This field is used to initiate a page to the mobile station connected to the Test Set The Test Set must be in the active state t...

Page 200: ... channel connection to the mobile station When the Release field is selected a mobile station control message with a release order is sent to the mobile station on the forward voice channel A mobile station must be actively connected on a voice channel to the Test Set that is the Connect annunciator must be lit before you can attempt to send a release order to the mobile station Set Message This f...

Page 201: ...orward voice channel messages SPC WORD1 Message Fields Figure 37 SPC WORD1 Message Fields T1T2 This field identifies the received message as an order confirmation an order or a called address message DCC This field sets the digital color code SID1 First part of the system identification field The field contains the decimal equivalent of the 14 most significant bits of the system identification num...

Page 202: ...0 indicates that this is the first word of the system overhead parameter message A 111 indicates this is the second word of the system parameter overhead message Parity Parity field The contents of the Parity field cannot be set by the user The Test Set calculates the parity bits SPC WORD2 Message Fields Figure 38 SPC WORD2 Message Fields T1T2 This field identifies the received message as an order...

Page 203: ...This field displays the extended address word sent to the mobile Set to 1 if the extended address word is sent Set to 0 if the extended address word is not sent REGH Registration field for home stations REGR Registration field for roaming stations DTX Discontinuous transmission field N 1 N is the number of paging channels in the system RCF Read control filler field CPA Combined paging access field...

Page 204: ...tes a global action message A 110 indicates that this is the first word of the system overhead parameter message A 111 indicates this is the second word of the system parameter overhead message Parity Parity field The contents of the Parity field cannot be set by the user The Test Set calculates the parity bits ACCESS Message Fields Figure 39 ACCESS Message Fields T1T2 This field identifies the re...

Page 205: ...205 Chapter 6 Call Processing Subsystem CALL BIT Screen Message Field Descriptions ACT Global Action Field BIS Busy Idle status field ...

Page 206: ...ays the overhead message type A 100 indicates a global action message A 110 indicates this is the first word of the system parameter overhead parameter message A 111 indicates this is the second word of the system parameter overhead message Parity Parity field The contents of the Parity field cannot be set by the user The Test Set calculates the parity bits REG INC Message Fields Figure 40 REG INC...

Page 207: ...l Processing Subsystem CALL BIT Screen Message Field Descriptions DCC Digital color code field ACT Global Action Field REGINCR Registration increment field RSVD Reserved for future use all bits must be set as indicated ...

Page 208: ... a global action message A 110 indicates this is the first word of the system parameter overhead parameter message A 111 indicates this is the second word of the system parameter overhead message Parity Parity field The contents of the Parity field cannot be set by the user The Test Set calculates the parity bits REG ID Message Fields Figure 41 REG ID Message Fields T1T2 This field identifies the ...

Page 209: ...Call Processing Subsystem CALL BIT Screen Message Field Descriptions REGID Registration ID field END End indication field Set to 1 to indicate the last word of the overhead message train Set to 0 if not the last word ...

Page 210: ...parameter message A 111 indicates this is the second word of the system parameter overhead message Parity Parity field The contents of the Parity field cannot be set by the user The Test Set calculates the parity bits C FILMESS Message Fields Figure 42 C FILMESS Message Fields T1T2 This field identifies the received message as an order confirmation an order or a called address message DCC Digital ...

Page 211: ...ust be set as indicated F3 Control filler message field 3 All bits must be set as indicated WFOM Wait for overhead message field F4 Control filler message field 4 All bits must be set as indicated OHD This field displays the overhead message type A 100 indicates a global action message A 110 indicates this is the first word of the system parameter overhead parameter message A 111 indicates this is...

Page 212: ...igure 43 MS WORD1 Message Fields T1T2 This field identifies the received message as an order confirmation an order or a called address message DCC Digital color code field MIN1 First part of the mobile identification number field Parity Parity field The contents of the Parity field cannot be set by the user The Test Set calculates the parity bits ...

Page 213: ...end Word field sends the currently defined bits displayed in the MSMessOrd field to the mobile station T1T2 This field identifies the received message as an order confirmation an order or a called address message SCC SAT color code field MIN2 Second part of the mobile identification number field RSVD Reserved for future use all bits must be set as indicated ...

Page 214: ...d ORDQ The order qualifier field qualifies the order confirmation to a specific action ORDER This field identifies the order type Parity Parity field The contents of the Parity field cannot be set by the user The Test Set calculates the parity bits MS IntVCh Message Fields Figure 45 MS IntVCh Message Fields T1T2 This field identifies the received message as an order confirmation an order or a call...

Page 215: ...level associated with the designated voice channel CHAN Channel number field Indicates the designated voice channel Parity Parity field The contents of the Parity field cannot be set by the user The Test Set calculates the parity bits FVC O Mes Message Fields Figure 46 FVC O Mes Message Fields T1T2 This field identifies the received message as an order confirmation an order or a called address mes...

Page 216: ...Descriptions PSCC Present SAT color code Indicates the SAT color code associated with the present channel RSVD Reserved for future use all bits must be set as indicated LOCAL Local control field This field is specific to each system The ORDER field must be set to local control for this field to be interpreted ...

Page 217: ...ity field The contents of the Parity field cannot be set by the user The Test Set calculates the parity bits FVC V Mes Message Fields Figure 47 FVC V Mes Message Fields T1T2 This field identifies the received message as an order confirmation an order or a called address message SCC SAT color code for new channel PSCC Present SAT color code Indicates the SAT color code associated with the present c...

Page 218: ...sing Subsystem CALL BIT Screen Message Field Descriptions RSVD Reserved for future use all bits must be set as indicated VMAC This field displays the voice mobile attenuation code It shows the mobile station power level associated with the designated voice channel ...

Page 219: ...e set by the user The Test Set calculates the parity bits RandChalA Message Fields Figure 48 RandChalA Message Fields T1T2 This field identifies the received message as an order confirmation an order or a called address message DCC Digital color code for new channel ACT Global action field RANDA The 16 most significant bits of the 32 bit RAND variable stored by a mobile for use in the authenticati...

Page 220: ...ord OHD Overhead message type field Set to 100 indicating the global action message Parity Parity field The contents of the Parity field cannot be set by the user The Test Set calculates the parity bits RandChalB Message Fields Figure 49 RandChalB Message Fields T1T2 This field identifies the received message as an order confirmation an order or a called address message DCC Digital color code for ...

Page 221: ...ld displays the overhead message type A 100 indicates a global action message A 110 indicates this is the first word of the system parameter overhead parameter message A 111 indicates this is the second word of the system parameter overhead message Parity Parity field The contents of the Parity field cannot be set by the user The Test Set calculates the parity bits RAND SSD1 Message Fields Figure ...

Page 222: ...ate Order Parity Parity field The contents of the Parity field cannot be set by the user The Test Set calculates the parity bits RAND SSD2 Message Fields Figure 51 RAND SSD2 Message Fields T1T2 This field identifies the received message as an order confirmation an order or a called address message SCC SAT color code for new channel RAND_SSD2 The subsequent 24 bits following RANSSSD_1 of the random...

Page 223: ...he parity bits RAND SSD3 Message Fields Figure 52 RAND SSD3 Message Fields T1T2 This field identifies the received message as an order confirmation an order or a called address message SCC SAT color code for new channel RSVD1 Reserved for future use RANDSSD3 The least significant 8 bits of the random number issued by the base station in the SSD Update Order RSVD2 Reserved for future use ...

Page 224: ...e Test Set calculates the parity bits BSChalCon Message Fields Figure 53 BSChalCon Message Fields T1T2 This field identifies the received message as an order confirmation an order or a called address message SCC SAT color code for new channel RSVD1 Reserved for future use AUTHBS Output response of the authentication algorithm initiated by the Base Station Challenge order RSVD2 Reserved for future ...

Page 225: ...ChOrd Message Fields Figure 54 UniqChOrd Message Fields T1T2 This field identifies the received message as an order confirmation an order or a called address message SCC SAT color code for new channel RANDU The 24 bit random number issued by the base station in the Unique Challenge Order Parity Parity field The contents of the Parity field cannot be set by the user The Test Set calculates the pari...

Page 226: ...ields T1T2 This field identifies the received message as an order confirmation an order or a called address message RANDSSD_1 The most significant 24 bits of the random number issued by the base station in the SSD Update Order RSVD Reserved for future use Parity Parity field The contents of the Parity field cannot be set by the user The Test Set calculates the parity bits ...

Page 227: ...tifies the received message as an order confirmation an order or a called address message RANDSSD_2 The subsequent 24 bits following RANSSSD_1 of the random number issued by the base station in the SSD Update Order RSVD Reserved for future use Parity Parity field The contents of the Parity field cannot be set by the user The Test Set calculates the parity bits ...

Page 228: ...ields T1T2 This field identifies the received message as an order confirmation an order or a called address message RANDSSD_3 The least significant 8 bits of the random number issued by the base station in the SSD Update Order RSVD Reserved for future use Parity Parity field The contents of the Parity field cannot be set by the user The Test Set calculates the parity bits ...

Page 229: ...ies the received message as an order confirmation an order or a called address message RSVD1 Reserved for future use AUTHBS Output response of the authentication algorithm initiated by the Base Station Challenge order RSVD2 Reserved for future use Parity Parity field The contents of the Parity field cannot be set by the user The Test Set calculates the parity bits ...

Page 230: ...qCh Message Fields T1T2 This field identifies the received message as an order confirmation an order or a called address message RSVD Reserved for future use RANDU The 24 bit random number issued by the base station in the Unique Challenge Order Parity Parity field The contents of the Parity field cannot be set by the user The Test Set calculates the parity bits ...

Page 231: ...XT PROT Message Fields T1T2 This field identifies the received message as an order confirmation an order or a called address message SCC SAT color code for new channel MIN2 Second part of the mobile identification number EF Extended Protocol Forward Channel Indicator MSL Message Length Extended Protocol Message Length ...

Page 232: ...not be set by the user The Test Set calculates the parity bits NCH ASN Message Fields Figure 61 NCH ASN Message Fields T1T2 This field identifies the received message as an order confirmation an order or a called address message DSCC DSAT color code for the new channel Also represents SCC for handoff to a wide analog channel RSVD Reserved for future use C13 Channel number bit 13 set 10 kHz above c...

Page 233: ...he designated voice channel CHAN Channel number field Indicates the designated RF channel Parity Parity field The contents of the Parity field cannot be set by the user The Test Set calculates the parity bits NMS FVC Message Fields Figure 62 NMS FVC Message Fields T1T2 This field identifies the received message as an order confirmation an order or a called address message DSCC DSAT color code for ...

Page 234: ...atures RSVD Reserved for future use OE The Odd Even data field is used for adjacent channel protection LOCAL This field is specific to each system The Order field must be set to local control for this field to be interpreted ORDQ The order qualifier field qualifies the order confirmation to a specific action ORDER This field indicates the order type Parity Parity field The contents of the Parity f...

Page 235: ...ies the received message as an order confirmation an order or a called address message SCC SAT color code for new channel PSCC Present SAT color code Indicates the ST color code associated with the present channel CTYP Channel type indicator DSCC DSAT color code for the new channel Also represents SCC for handoff to a wide analog channel RSVD Reserved for future use ...

Page 236: ...eld displays the voice mobile attenuation code It shows the mobile station power level associated with the designated voice channel CHAN Channel number field Indicates the designated RF channel Parity Parity field The contents of the Parity field cannot be set by the user The Test Set calculates the parity bits NHO MES Message Fields Figure 64 NHO MES Message Fields T1T2 This field identifies the ...

Page 237: ...el CTYP Channel type indicator OE The Odd Even data field is used for adjacent channel protection RSVD Reserved for future use C13 Channel number bit 13 set 10 kHz above channel number in CHAN Field C12 Channel number bit 12 set 10 kHz below channel number in CHAN Field VMAC This field displays the voice mobile attenuation code It shows the mobile station power level associated with the designated...

Page 238: ...IDE manual callscrn fb Chapter 6 Call Processing Subsystem CALL BIT Screen Message Field Descriptions Parity Parity field The contents of the Parity field cannot be set by the user The Test Set calculates the parity bits ...

Page 239: ... Bits Use the bit patterns as set on the CALL BIT screen to build all forward control channel and forward voice channel signaling messages For any call processing function that is setting the message stream on the active control channel registering the mobile station paging the mobile station handing off the mobile station or releasing the mobile station the user is responsible for setting the con...

Page 240: ...en are updated with the bit patterns generated using the signaling formats defined in the applicable industry standard whenever that signaling message is sent to the mobile station This feature allows a user to set the Data Spec field to Std select a message of interest perform a call processing function and view the bit patterns generated using the signaling formats defined in the applicable indu...

Page 241: ... unlikely that while in the active state a user could modify more than one field before the message was sent to the mobile station There is no functionality in the Test Set to allow an entire message to be modified and then inserted into a messaging protocol at a specific location at a specific time This functionality requires a protocol analyzer When in the Bits mode the Test Set provides the mes...

Page 242: ...attern Select Done from the Choices menu when the desired bit pattern has been entered When a message field is being modified the original contents of the field that is the contents of the field before modification was started is sent whenever the message is used in a messaging protocol The new contents are not used until Done is selected from the Choices menu Use the CANCEL key to abort a modific...

Page 243: ...hannel switch to the new voice channel assignment and transpond the new SAT frequency assignment When the Test Set detects that this has happened the Connect annunciator is lit indicating that the handoff was successful The left hand fields in the Voice Channel Assignment section will be updated with the new voice channel assignment information 8 Select CALL BIT from the To Screen menu The CALL BI...

Page 244: ...t Set while on an active voice channel The Test Set does not monitor the mobile station s transmitted carrier power while the ANALOG MEAS screen is displayed If the power falls below 0 0005 Watts no error message is displayed nor will the Test Set terminate the call while on the ANALOG MEAS screen AF Anl In This field selects the input for the Audio Frequency analyzer Refer to the AF Anl In field ...

Page 245: ...Set the lower field sets the FM modulation deviation if the upper field set to FM AM modulation depth if the upper field set to AM amplitude of audio signal volts RMS at the AUDIO OUT connector if upper field is set to Audio Out For testing mobile stations the upper field is normally set to FM and the lower field set to the desired FM deviation in kHz Refer to the AFGen1 Freq field description on ...

Page 246: ...several standard or optional audio frequency filters which can be used to condition the audio signal before being analyzed by the Audio Frequency Analyzer Refer to the Filter 1 and Filter 2 field description on page 106 for further information FM Deviation This field displays the measured FM deviation of the carrier being transmitted by the mobile station Four dashes indicate that no carrier is pr...

Page 247: ...d to the Test Set s AUDIO IN connector and the mobile station s microphone input must be connected to the Test Set s AUDIO OUT connector in order to use the ANALOG MEAS screen Refer to figure 17 Connecting a Mobile Station to the Test Set on page 119 for connection information If the mobile station does not have audio connections the ANALOG MEAS screen cannot be used There are a wide variety of au...

Page 248: ...s not displayed select the ANLG MEAS field from the To Screen menu The ANALOG MEAS screen will be displayed 7 The following example illustrates how to make a 12 dB SINAD Receiver Sensitivity measurement a Select the AFGen1 Freq field and set it to 1 kHz b Select the upper AFGen1 To field and set it to FM c Select the lower AFGen1 To field and set it to 8 kHz d Select the AF Anl In field and select...

Page 249: ...e be muted if possible when making measurements on the mobile stations RF carrier If the microphone is not muted it is possible for extraneous noise to be picked up by the microphone and adversely affect the measurements 6 The following example illustrates how to make a FM Hum and Noise measurement a Select the Amplitude field and set it to 47 dBm b Select the AFGen1 Freq field and set it to 1 kHz...

Page 250: ... screen is used to set some of the less commonly used Test Set configuration parameters When the CALL CONFIGURE screen is displayed and the Call Processing Subsystem is in the connect state the Test Set constantly monitors the mobile station s transmitted carrier power If the power falls below 0 0005Watts the error message RF Power Loss indicates loss of Voice Channel will be displayed and the Tes...

Page 251: ...e audio signal being measured Refer to the Detector field description on page 105 for descriptions of the detectors available Input Att Input Att sets the amount of input attenuation for the RF IN OUT and ANT IN connectors The Input Att field displays the present attenuation value and it is used to set the desired attenuation level Sat Tol This field is used to select the Sat tolerance When set to...

Page 252: ...252 S HP892XX USRGUIDE manual callscrn fb Chapter 6 Call Processing Subsystem CALL CONFIGURE Screen ...

Page 253: ...number of general operating functions such as date and time screen intensity and beeper volume It is also used to define some RF signal parameters such as RF Generator Analyzer offset channel standards and characteristics and signal loss gain compensation ...

Page 254: ...254 S HP892XX USRGUIDE manual confscrn fb Chapter 7 Configure Screen Field Descriptions Field Descriptions Figure 67 The Configure Screen Figure 68 The Configure Screen cnfgscrn wmf More cnfg new wmf ...

Page 255: ...Offset field description on page 265 1 Spectrum Analyzer is optional on some Test Set models Base Freq User Defined The Base Frequency field sets the RF Generator reference for channel 0 zero when the RF Chan Std field is set to USER DEF and the RF Display field is set to Chan Channel frequencies are calculated using the following formula Channel N Base Frequency N Channel Spacing The Base Frequen...

Page 256: ...crn fb Chapter 7 Configure Screen Field Descriptions See Also Chan Space User Defined field description on page 257 Gen Anl field description on page 259 RF Chan Std field description on page 262 RF Display field description on page 263 ...

Page 257: ...lume setting is retained when the instrument is turned off Chan Space User Defined This field specifies the RF channel spacing when the RF Display field is set to Chan and the RF Chan Std field is set to USER DEF For example entering 25 kHz causes a 25 kHz spacing between each channel If the receive frequency for channel 1 is 150 500 MHz channel 2 s receive frequency would be 150 525 MHz Operating...

Page 258: ...icated in the RF Generator s Amplitude field Example if this value is 10 dB and the Amplitude field shows 0 dBm the actual level out this port is 10 dBm The value at the output of the external amplifier should then be at the level indicated in the Amplitude field Enter a negative value to indicate a loss such as cable loss The RF Generator s level is automatically set that amount above what is ind...

Page 259: ...ceive frequency is lower than the transmit frequency such as 45 MHz Operating Considerations The value of this field is only used if the RF Display field is set to Chan and the RF Chan Std field is set to USER DEF See Also Chan Space User Defined field description on page 257 RF Chan Std field description on page 262 RF Display field description on page 263 Intensity This field adjusts the screen ...

Page 260: ...elects if the Notch Freq setting of the AF ANALYZER screen is coupled to the AF Gen1 Freq setting When set to None the notch filter and AF Generator 1 do not interact When set to AFGen1 coupled the settings track each other unless the AF Generator s frequency is set outside the 300 Hz to 10 kHz limits of the notch filter1 1 Optional for the HP 8920A Range Hold These fields enable disable several a...

Page 261: ... screens Gain Cntl in the AF ANALYZER screen This field controls three AF gain setting fields Input Gain De Emp Gain Notch Gain Operating Considerations The Hold All setting is primarily used when the instrument is operated by remote control such as in an automated test system Unless you have very specific reasons for disabling the automatic functions you should set this field to Auto All when ope...

Page 262: ...s what type of radio to test mobile station MS or land station LS For example if you are testing an AMPS mobile select MS AMPS For the NAMPS standards a third letter is added indicating which frequency band is used upper middle or lower For example when testing a mobile station using the lower band choose MSL NAMPS Testing a land station using the upper band you would select LSU NAMPS The USER DEF...

Page 263: ...ng eliminates the need to enter transmit and receive frequencies directly into the Test Set Once your radio s RF channel standard is selected you only have to enter the channel number to automatically set the RF Generator and RF Analyzer to the correct frequencies Operating Considerations When channel tuning is used the RF Analyzer is set to manual tuning The Tune Mode field on the TX TEST DUPLEX ...

Page 264: ...matically set the specified amount below what is indicated in the RF Genera tor s Amplitude field Example if this value is 10 dB and the Amplitude field shows 0 dBm the actual level out of this port is 10 dBm When this port is used as an input the TX Power measurement and Spectrum Ana lyzer s Marker Level Lvl are automatically reduced by that amount Enter a negative value to indicate a loss such a...

Page 265: ...ex Out field description on page 258 RF Chan Std field description on page 262 RF Offset This field is displayed when the RF Display field has Freq selected This field enables disables the RF Generator RF Analyzer frequency offset specified in the Gen Anl field below it Operating Considerations When an RF offset is used changing the RF Generator s frequency or RF Analyzer s tune frequency automati...

Page 266: ...witch from the RX TEST screen to the TX TEST screen when an RF carrier is detected The screen returns to RX TEST when the carrier is no longer detected PTT Push To Talk causes the instrument to automatically switch from the TX TEST screen to the RX TEST screen when a microphone connected to the MIC ACC connec tor is keyed The screen changes back to TX TEST when the microphone is no longer keyed Op...

Page 267: ...Set Time This field sets the time of day for the instrument s 24 hour clock Example 4 53 PM is entered 16 53 Operating Considerations The internal clock still functions when the instrument is turned off Total RAM This field displays the total amount of RAM available for IBASIC programs and save recall registers ...

Page 268: ...268 S HP892XX USRGUIDE manual confscrn fb Chapter 7 Configure Screen Field Descriptions ...

Page 269: ...269 8 Signaling Decoder Screen ...

Page 270: ...e EDACS Enhanced Digital Access Communications System Function Generator LTR Logic Trunked Radio Registered Trademark of EF Johnson Company MPT 1327 NMT Nordic Mobile Telephone encoder and decoder Tone Sequence The Decoder s Signal Source The decoder always gets its signal immediately after the de emphasis network of the AF Analyzer De emphasis can be turned on or off on the AF ANALYZER screen or ...

Page 271: ... analyze Forward Control Channel FOCC and Forward Voice Channel FVC data from the base station Decoder Mode Differences The AMPS TACS and NAMPS NTACS Decoder modes are essentially the same for analyzing Reverse Control Channel RECC information However the Voice Channel RVC information for NAMPS NTACS is displayed differently than AMPS TACS information Fields and decoder measurements that are only ...

Page 272: ... the source of the signal to be analyzed Operating Considerations This is a priority control field Accessing the RX TEST or TX TEST screen overrides any changes made to this field in this screen Arm Meas Arm measurement prepares the decoder to be triggered by an incoming signal Channel This field selects the type of data to decode Reverse Control Channel Cntl or Reverse Voice Channel Voice nmps de...

Page 273: ...ACS RVC decoder See Also Arm Meas field description on page 272 Num of Bits field description on page 274 Input Level This field specifies the expected data signal level after de emphasis if used The higher the level of signal expected by the analyzer the higher the trigger level is set Operating Considerations The unit of measure is determined by the AF Anl In setting The input level should be se...

Page 274: ...3 bits for decoding Reverse Control Channel RECC data streams This measurement is not available for NAMPS NTACS RVC decoding See Also Gate Time field description on page 273 Polarity This setting is used to match the polarity of the encoded signal being analyzed Normal Operation When this field is set to Norm a logical high 1 is displayed when a positive peak in the received signal is detected A n...

Page 275: ...ted by changing the Input Level field s setting The input level should be set high enough to prevent false triggering but low enough to allow triggering for valid signals This may require you to set the input level well below the expected level Trigger Pattern bin This field allows you to enter a specific bit pattern to filter displayed information The decoder only displays the received data when ...

Page 276: ...der Using the AMPS TACS NAMPS NTACS Decoder Interaction With the Encoder The encoder screen s Data Rate field tells the decoder how fast the incoming message is being sent Set that field s value before using the AMPS TACS or NAMPS NTACS Decoder Figure 71 Decoding the Reverse Control Channel RECC Data amps de2 wmf ...

Page 277: ...8 Signaling Decoder Screen Using the AMPS TACS NAMPS NTACS Decoder Figure 72 Decoding AMPS TACS Reverse Voice Channel RVC Data Figure 73 Decoding NAMPS NTACS Reverse Voice Channel RVC Data amps de3 wmf nmps de2 wmf ...

Page 278: ...plete the last hex character the received bits are used as the most significant bits in the character and the remaining bit positions are filled with zeros For example if the last bits received are 01 two zeros are added to the right to produce the binary number 0100 The hexadecimal equivalent 4 is displayed The first two hex characters of the RECC data displayed contain the 7 bit Digital Color Co...

Page 279: ...oder displays a constantly changing number until one of the standard values is detected Data displays the 36 message bits and 12 parity bits of the RVC message The mea surement begins when the last sync word bit is received and ends after the last parity bit is received The measurement is re triggered when the next sync word is received there is no gate time function for this decoder mode DTMF dis...

Page 280: ...ystem Decoder The Continuous Digital Controlled Squelch System CDCSS Decoder analyzes digital data streams used to turn squelch on and off on digitally controlled squelch radios Figure 74 The CDCSS Sequence Decoder Screen AF Anl In Audio frequency analyzer input selects the source of the signal to be analyzed See Also Interaction Between Screens on page 54 cdcs de1 wmf ...

Page 281: ...m being received After 23 bits have been received the decoder shifts the bit sequence 23 times until all possible bit patterns have been analyzed Any possible code words are displayed in the Codes oct column Even if no code words are found this field will still display the bit sequence that was received Operating Considerations This field is blank if the only signal received during the decoder s l...

Page 282: ...phasis is enabled disabled using the De Emphasis field on the AF ANALYZER screen See Also Trig Level field description on page 283 Polarity This field is used to match the polarity of the encoded signal being analyzed Normal Operation When this field is set to Norm a logical high 1 is displayed when a positive peak in the received signal is detected A negative peak displays a logical low 0 Inverte...

Page 283: ... once each time Arm Meas is selected Cont is used to automatically re arm the analyzer and display the measurements on a continual basis until Single is selected Stop Meas Selecting this field stops the analyzer when making a single measurement Trig Level The trigger level indicates the minimum signal level required to begin a measurement that has been armed The level is adjusted by changing the I...

Page 284: ...gs Filter 1 to 20Hz HPF Required Filter 2 to 3kHz LPF Recommended Settling to Slow Recommended Interpreting Decoded Data Because CDCSS uses a continuously repeating data stream and there is no framing information to tell the receiver when the code word is going to be sent the decoded data can result in several possible code combinations This is why more than one code word may be listed in the Code...

Page 285: ...ne Freq field of the TX TEST screen is typically used to tune to the pager channel to be decoded Figure 75 The Digital Paging Decoder Screen AF Anl In Audio frequency analyzer input selects the source of the signal to be analyzed This is typically set to FM Demod for off the air decoding of pager transmitters Arm Meas Arm measurement prepares the decoder to be triggered by an incoming signal digi ...

Page 286: ...when tone only formats are decoded Data Rate This display field lists the data rate of the received signal in bits per second bps Operating Considerations This measurement relies on the digital paging encoder screen s data rate setting Set the encoder s Data Rate field to the expected incoming data rate for accurate measurements See Also Data Rate field description on page 374 Display Page This fi...

Page 287: ...e time if this error is displayed Input Level Enter the expected data signal level in this field The higher the level of signal expected by the analyzer the higher the trigger level is set Operating Considerations The unit of measure is determined by the AF Anl In setting The input level should be set high enough to prevent false triggering but low enough to allow triggering for valid signals typi...

Page 288: ...displays a logical low 0 Single Cont This field specifies how long you want the analyzer to decode incoming signals Single tells the analyzer to display the information received during one gate time Measurements are displayed until Arm Meas is selected again Cont is used to automatically re arm the analyzer and display new measurements on a continual basis until Single is selected Previous measure...

Page 289: ...ed parameters Figure 76 The DTMF Decoder Screen AF Anl In Audio frequency analyzer input selects the source of the signal to be analyzed Operating Considerations This is a priority control field Accessing the RX TEST or TX TEST screen overrides any changes made to this field in this screen Arm Meas Arm measurement prepares the decoder to be triggered by an incoming signal when making single measur...

Page 290: ... after it has been triggered Hi Tone This for the high frequency tone in each tone pair The measurement type is selected by selecting the Freq field to display a list of measurement choices Operating Considerations Frequency error is calculated by comparing the DTMF Encoder s frequency settings for each tone pair with the decoded frequencies See Also Using the DTMF Decoder on page 294 ...

Page 291: ...sis is a single pole low pass filter with a 212 2 Hz corner frequency It is enabled disabled using the De Emphasis field on the AF ANALYZER screen Refer to Figure 15 AF ANALYZER Functional Block Diagram on page 100 The Input Level is the expected level at the output of the de emphasis network Assuming a mean DTMF frequency of approximately 1 kHz decoding with de emphasis on set to 750 µs requires ...

Page 292: ...Encoder s frequency settings for each tone pair with the decoded frequencies See Also Using the DTMF Decoder on page 294 Off Time This measurement column lists the length of time each tone pair was off prior to the next tone being received On Time This measurement column lists the length of time each tone pair was on Single Cont This field specifies how you want the analyzer to be armed Single is ...

Page 293: ... analyzer when making single measurements Sym The symbol column corresponds to the DTMF Encoder s symbols assigned for each tone pair As each tone pair is analyzed the corresponding symbol is listed in this column Operating Considerations The symbol assigned is based on the closest symbol frequencies to that tone pair ...

Page 294: ...easurement Limits Lo Tone 680 960 Hz Hi Tone 1190 1660 Hz Actual limits are typically slightly wider than this However the crossover point between Hi and Lo tone decoding is approximately 1 1 kHz If incoming tones approach this point unreliable measurements may be displayed frequency measurement errors and spurious off times ...

Page 295: ...urements can be made the EDACS Encoder must be set up to provide the necessary system information Refer to Using the EDACS Encoder on page 388 for information on setting up the EDACS Encoder Four types of calls can be decoded group individual emergency and voice guard Figure 77 The EDACS Trunked Radio Decoder Screen AF Anl In This field selects the source of the signal to be decoded FM Demod is no...

Page 296: ...epends on the Radio Repeater setting and the type of message decoded Input Level This field is used to set the trigger level for the decoder The displayed Trig Level changes as the Input Level is adjusted This field is normally set to 1 kHz for EDACS decoding assuming the AF Anl In field is set to FM Demod Operating Considerations The units displayed kHz V depends on the AF Anl In setting Polarity...

Page 297: ... want to arm the decoder Single requires you to manually arm the decoder using the Arm Meas field before each measurement is made Cont automatically arms the decoder to make a measurement and re arms the decoder after a measurement is made Operating Considerations To dis arm the decoder in single mode select the Stop Meas field The Stop Meas function is disabled when Cont is selected Standard The ...

Page 298: ... measurements Transmitter Test Procedure This procedure establishes a control channel connection between the Test Set and your mobile After the mobile locks to the control channel the decoder is armed and the mobile s transmitter is keyed to make measurements NOTE Each EDACS radio is pre programmed to access a specific control channel and one or more working channels Other mobile and system identi...

Page 299: ... Frequency is the mobile s receive frequency for the selected working channel The TX Frequency is the mobile s transmit frequency for the selected working channel 7 Enter the Logical ID number 8 Enter the Group ID number 9 Enter the Site ID number Prepare the Decoder for Transmitter Measurements 1 Turn the SQUELCH control on the Test Set fully clockwise 2 Select DECODER from the To Screen menu to ...

Page 300: ...cy and TX Power are displayed Making Other Transmitter Measurements By connecting Audio Frequency Generator 1 AFGen 1 to your transmitter s microphone input you can make calibrated modulation measurements such as microphone sensitivity modulation limiting and transmitter frequency response 1 Connect the AUDIO OUT port of the Test Set to your mobile s microphone input 2 Access the DUPLEX TEST scree...

Page 301: ...ator Decoder Screen AF Anl In Audio frequency analyzer input selects the source of the signal to be analyzed Operating Considerations This is a priority control field Accessing the RX TEST or TX TEST screen overrides any changes made to this field in this screen See Also Interaction Between Screens on page 54 func dec wmf ...

Page 302: ...sis if it is turned on The higher the level of signal expected by the analyzer the higher the trigger level is set Operating Considerations The unit of measure is determined by the AF Anl In setting The input level should be set high enough to prevent false triggering but low enough to allow triggering for fluctuating signal levels If de emphasis is used by setting the AF Analyzer s De Emphasis fi...

Page 303: ...be armed Single is used to analyze and display the decoded information once each time Arm Meas is selected Cont is used to automatically re arm the analyzer and display the measurements on a continual basis until Single is selected Trig Level The trigger level indicates the minimum signal level required to begin a measurement that has been armed The level is adjusted by changing the Input Level fi...

Page 304: ...er Using the Function Generator Decoder Decoding Considerations Frequency measurements are affected by the Filter1 Filter2 Settling and De Emphasis settings in the AF ANALYZER screen Four dashes are displayed if the incoming signal is out of range or if the Gate Time is too long for the frequency being measured ...

Page 305: ...9 The LTR Trunked Radio Decoder Screen AF Anl In Audio frequency analyzer input selects the source of the signal to be analyzed almost always FM Demod for LTR decoding Arm Meas Arm measurement prepares the decoder to be triggered by an incoming signal when set to make a single measurement Data This field displays decoded LTR data The LTR display setting determines what type of data is decoded Itr ...

Page 306: ...s Gate Time This field specifies how long the decoder analyzes a signal after it has been triggered Input Level Enter the expected data signal level in this field typically 1 kHz for LTR data The higher the level of signal expected by the analyzer the higher the Trigger Level is set Operating Considerations The unit of measure is determined by the AF Anl In setting kHz when the input is FM Demod T...

Page 307: ...ts next to the number of the repeater that sent it For example a decoded message with a Goto number of 02 may look like this 01 02 0020212806 03 04 04 05 This is interpreted as follows 02 0 02 02 128 06 Repeater Area Goto Home ID Free Polarity This setting is used to match the polarity of the encoded signal being analyzed Normal Operation When this field is set to Norm a logical high 1 is displaye...

Page 308: ...information received during one gate time Cont is used to automatically re arm the analyzer and display the measurements on a continual basis until Single is selected Stop Meas Selecting this field stops the analyzer when making single measurements Trig Level The trigger level indicates the minimum signal level required to begin a measurement that has been armed The level is adjusted by changing t...

Page 309: ...n and select LTR for the Mode 2 Set the LTR display field to Radio 3 Set the Single Cont field to Single 4 Set the AF Anl In field to FM Demod 5 Set the Input Level to 1 kHz 6 Select Arm Meas to prepare the decoder for triggering The transmitted data should be displayed after being computed An End of Data reached during decode message may be displayed at the top of the screen during decoding Four ...

Page 310: ...ode and display only the first valid transmitter data received The decoder must be re armed before another measurement can be made Select Cont to continuously monitor a repeater and display its transmitted data 9 Set the AF Anl In field to FM Demod 10 Set the Input Level to 1 kHz 11 Select Arm Meas if you are using single triggering The transmitted data is displayed after computing is displayed in...

Page 311: ...d with the MPT 1327 Encoder screen to decode and display MPT 1327 data streams Like the MPT 1327 Encoder the MPT 1327 Decoder is primarily intended to be controlled using IBASIC programs running on the Test Set s IBASIC controller or on an external controller Figure 80 The MPT 1327 Decoder Screen mpt de1 wmf ...

Page 312: ... Encoder operation including using the undisplayed controls accessed using IBASIC commands For these reasons the following information generally assumes you are operating the decoder under IBASIC control Decoder Triggering For MPT 1327 signaling detection the decoder should be configured for repetitive retriggering using the HP IB command TRIGger MODE RETRigger REPetitive When the decoder is armed...

Page 313: ...ffer The receive buffer is organized as 16 128 bit timeslots Decoder repetitive retriggering is used to minimize the decoder down time between messages It is therefore important to extract the messages from the decoder buffer as soon as possible after their arrival This avoids the messages being overwritten by further signaling Table 7 Triggering the MPT 1327 Decoder Test Mode Decoder Synchronizat...

Page 314: ...sembled into the DCW extension Examples of this are Simple RQS from RU RQS 0 1 5 0 Cleardown from RU sent in three consecutive timeslots MAINT 0 1 283 3 0 MAINT 0 1 283 3 0 MAINT 0 1 283 3 0 SAMIS response to AHYC giving PSTN digits for call SAMIS 14391 83782 DCW H080000000000 H000000000000 There are two other measurements available on the decoder screen The Signaling Data Rate The signaling data ...

Page 315: ...affic test modes it is disabled in all other modes In Control mode the timing counter is reset at the end of each message transmitted from the control channel message buffer It is not affected by the on going trans mission of the control channel filler pattern In the Traffic mode the timing counter is reset at the end of each message trans mitted from the traffic channel message buffer There is no...

Page 316: ... that comprise an NMT signal This manual as sumes you understand the frame structure for the signals you need to create or analyze any frame information provided is for reference purposes MS Mobile Station The equipment used by a mobile subscriber BS Base Station The unit that provides the radio interface between one or more Mo bile Stations and the Mobile Telephone Exchange MTX Mobile Telephone E...

Page 317: ... the AM FM or SSB demodulators The AUDIO IN RADIO INTERFACE MODULATION INPUT MIC ACC and AU DIO OUT connectors The signal present at the AM or FM modulators for the RF Generator See Also Interaction Between Screens on page 54 Displaying Measurements on page 57 Exit Status This field indicates which EXIT n command caused the program to stop running See Also EXIT n command in the Program Command Syn...

Page 318: ...re transmitted and received Time The times in this column indicate when each frame was transmitted or received after Run Test was selected The times are listed in bit intervals that are dependent on the data rate set in the NMT Encoder For example at a data rate of 1200 bps one bit interval is equivalent to 0 833 ms 1 1200 Type This column lists the NMT standards frame type for each frame Operatin...

Page 319: ...or proper decoding When decoding NMT data streams you should turn de emphasis off controlled by the De Emphasis field on the AF ANALYZER screen See Also Trig Level field description on page 288 Load Test This double field is used to select and load NMT tests from a variety of mass storage devices After the appropriate Mass Storage device is selected using the field on the right the desired NMT tes...

Page 320: ...his field interrupts the NMT test while running If Cont is selected the program automatically re runs from the beginning Standard This field specifies the NMT standard for the signal being decoded Operating Considerations This setting alters the decoder s function by specifying the expected frame structure and channel range for the incoming signal Trying to run a test with the wrong standard selec...

Page 321: ...umber and Power Traffic Channel Main Number and Power Traffic Channel Alt Number and Power Traffic Area Main and Alt DUT TCI Tariff Class Information MSN Mobile Subscriber Number Data Rate Access Channel Number and Power Batt Save Area Add Info SIS Challenge Testing A BS or MTX These fields are typically used to test a BS or MTX Mgmt Maint Meas Ch Phi Signal Meas Field Strength Password BS Identit...

Page 322: ...on and evaluate received frames 2 Enter the necessary information into the various encoder and decoder fields 3 Make the required Test Set AF Analyzer RF Analyzer and RF Generator settings 4 Load and run your program from the decoder Changing Standards Each NMT standard affects several operating parameters for the encoder and decoder screens however there are no visual changes to the contents of e...

Page 323: ... Slovenia Hungary Malaysia Saudi 1 Saudi 2 Spain Thailand Turkey STD900 Equivalents France Uses the STD900 protocol at STD450 frequencies Manual Testing of NMT Radios NMT signals contain complex groupings of digital data that vary in format and function depending on a number of system operating needs To be able to test NMT radios using these screens you must be familiar with the theory application...

Page 324: ... on external disks or memory cards for later use All HP 11807 Test Software packages include comprehensive documentation explaining hardware connections and software configuration and operation Required Test Set Settings The following Test Set settings should be made before using the NMT Encoder Decoder screens These settings assume the Test Set is in its preset state RF Generator Settings AFGen1 ...

Page 325: ...such as TC2 for Alternate Traffic Channel or to indicate special frame values affected such as the S suffix that indicates Battery Save information example 1aS The following suffixes are appended to some frame designations AC Access Channel CC Calling Channel S Battery Save TA1 Main Traffic Area TA2 Alternate Traffic Area TC1 Main Traffic Channel TC2 Alternate Traffic Channel ...

Page 326: ... radios These commands are used to send frames perform simple branching and looping operations change RF channels and test received frame types The NMT Decoder has its own RAM to run programs All NMT program commands must be entered into the decoder s RAM before they can be executed This can be done directly by entering commands one at a time into the NMT Test Entry field or by loading a test prog...

Page 327: ...pro grams line by line into RAM and then saving them on mass storage Using an IBASIC program that creates a file to output program commands Entering Tests Into The Decoder s RAM NMT commands are entered into the decoder s RAM using any of these methods Using the Load Test field to load an existing test from mass storage Using a connected terminal or cursor control knob to directly enter commands i...

Page 328: ... provided to allow direct entry of small programs without the need of external equipment or the need to store the program for future use Program Example This example program can be entered line by line into the NMT Test Entry field and then run by selecting Run Test begin set 1 5 10 send 1a send 2a repeat 1 10 exit 0 end NOTE Entering commands directly into the NMT Test Entry field causes any exis...

Page 329: ...ex clamation point following the line number REM statements cannot be substituted for the symbol All statements desired as comments in the NMT program are indicated by a double ex clamation point as the first entry following the line number The first line of all NMT programs must have NMT following the line number When storing NMT programs file names must begin with the letter n either lower or up...

Page 330: ...Listen 4 Enter the following commands on your computer OUTPUT Addr PROG DEL OUTPUT Addr PROG DEF 0 LIST Addr OUTPUT Addr END Addr is the HP IB address of the Test Set The END statement indicates that EOI is asserted with the last byte sent Refer to IEEE 488 2 standards for more information NOTE Although your NMT program is now in the Test Set s IBASIC program RAM it cannot be run from the TESTS IB...

Page 331: ...ys be the last command entered to describe an NMT test It causes the program to be checked for valid label references and terminates the test entry process EXIT n Stop the test and report exit status n Valid entries for the parameter n are integers from 0 to 10 and the following words these may be in upper or lower case PASSED FAILED ACCEPTED REJECTED INCOMPLETE All NMT test programs must contain ...

Page 332: ... TCA The frequency setting is determined by the channel number in the appropriate encoder field the selected DUT and the selected standard The parameter CC refers to the calling channel TC1 and TCM refer to the main traffic channel TC2 and TCA refer to the alternate traffic channel AC refers to the access channel TCHAN c Set the RF Generator to the correct frequency for NMT channel c Valid entries...

Page 333: ... f n Send the designated frame f with the signal n Valid entries for the parameter f with parameters n are as follows IF f l If the received frame register contains the frame f go to label l Valid entries for the parameter f include all the valid entries for f in the two SEND statements however the special suffixes discussed in Special Frame Suffixes on page 325 are ignored by this instruction Val...

Page 334: ...EAT n l Decrement the counter n by one and go to the label l if the counter value is still greater than 0 Valid entries for n are 1 and 2 Valid entries for l are integers from 0 to 255 The specified counter n must have been set with a SET n m statement previously in the test program The label l must appear somewhere in the test program before the END statement WAIT n Wait n bits with no data being...

Page 335: ...e Tone Sequence Decoder Screen AF Anl In Audio frequency analyzer input selects the source of the signal to be analyzed Operating Considerations This is a priority control field Accessing the RX TEST or TX TEST screen overrides any changes made to this field in this screen Arm Meas Arm measurement prepares the decoder to be triggered by an incoming signal when Single is selected tone dec wmf ...

Page 336: ...fies how long the decoder analyzes a signal after it has been triggered Input Level This field specifies a tone s on signal level that you input after de emphasis if used The higher the level of signal expected by the analyzer the higher the trigger level is set Operating Considerations The unit of measure is determined by the AF Anl In setting The input level should be set high enough to prevent ...

Page 337: ...is selected Stop Meas Selecting this field stops the analyzer when making single measurements Sym The symbol column corresponds to the Tone Sequence Encoder s symbols assigned for each tone As each tone is analyzed the symbol that represents each tone is listed in this column Operating Considerations The symbol assigned to a received tone is based on the closest symbol frequency to that tone If th...

Page 338: ...338 S HP892XX USRGUIDE manual decoscrn fb Chapter 8 Signaling Decoder Screen Tone Sequence Decoder ...

Page 339: ...339 9 Duplex Test Screen ...

Page 340: ... 2XW 0 HQRG 0 HPRG 66 HPRG XGLR Q 5DGLR QW W 0RG 0LF 0RG 0 0RG 0 0RG XGLR 2XW H PSDVOV XV 2II 3N 0D HWHFWRU 7XQH 0RGH 0HDVXUHPHQWV LVSOD UHD 3 N 3 XWR 0DQXDO 5 1 UW 17 1 QSXW 3RUW 5 1 7 3ZU HUR 2 5 HUR 0 HPRG N LOWHU 506 506 6457 3N 3N 3N 3N 0D 3N ROG 3N ROG 3N G 3N 0 KG 9ROWPHWHU XWR 0DQXDO 5 HQ UHT PSOLWXGH 0 G P 0 5 2XW HQ 7R 0 2II 0 0 HQ 7R HQ UHT HQ UHT N N N XSOH 2XW 2XWSXW 3RUW 5 2XW XSO WW...

Page 341: ...criptions Figure 84 The Duplex Test Screen AC Level This is the default measurement for this field The type of measurement shown is dependent on the AF Anl In settings See Also AF Anl In field description on page 342 Displaying Measurements on page 57 dxscrn wmf ...

Page 342: ...SSB demodulators the AUDIO IN RADIO INTERFACE MODULATION INPUT MIC ACC and AU DIO OUT connectors the signal present at the AM or FM modulators for the RF Generator Operating Considerations Changing this field causes the upper AF measurement to change This is a priority control field Accessing the RX TEST or TX TEST screen overrides any changes made to this field in other screens See Also FM Deviat...

Page 343: ...X TEST or TX TEST screen overrides any changes made to this field in other screens SNR Operation Selecting SNR turns off the other audio measurement The RF Generator and AF Generator 1 must be set up to provide the radio s carrier AFGen1 is automatically turned on and off repeatedly during this measurement AFGen2 must be turned off The radio s receiver s audio output must be connected to the AUDIO...

Page 344: ...audio frequency generator The upper field determines whether the AF signal modulates the RF Generator or is output through the AUDIO OUT connector The lower field sets the amplitude including Off The AUDIO OUT level is always in volts RMS Operating Considerations This is a priority control field Accessing the RX TEST or TX TEST screen overrides any changes made to this field in other screens See A...

Page 345: ...lso Atten Hold field description on page 345 Interaction Between Screens on page 54 MIC ACC on page 568 Atten Hold Attenuator hold prevents the fixed RF output attenuators from switching in and out eliminating the loss of the output signal as the level is changed This function is helpful when making squelch measurements Operating Considerations When this function is set to On the RF output level i...

Page 346: ...O OUT connector De Emphasis This setting selects or bypasses the 750 ms de emphasis networks in the audio analyzer and internal speaker circuitry Operating Considerations This is a priority control field Accessing the RX TEST or TX TEST screen overrides any changes made to this field in other screens See Also Interaction Between Screens on page 54 ...

Page 347: ...different detector or re select the same detector Pk Hold displays and holds the negative peak value until the measurement is reset To reset press the MEAS RESET key select a different detector or re select the same detector Pk 2 Hold divides the sum of the positive and negative peak values by 2 and dis plays the value until the measurement is reset To reset press the MEAS RESET key select a diffe...

Page 348: ...Coupling This field selects ac or dc coupling between the RF Generator s frequency modulator and the rear panel MODULATION INPUT connector This field also alters the FM modulator to allow DCFM from internal and external modulation sources FM Deviation This is the default measurement for this field The type of measurement listed here is dependent on the AF Anl In settings See Also AF Anl In field d...

Page 349: ...S RESET key and allow the Test Set to cool off for approximately 2 minutes before making any other measurements on this port The ANT IN antenna input connector provides a highly sensitive input for very low level signals such as off the air measurements You cannot measure TX RF Power on this screen using the ANT IN port However low level RF power at the ANT IN port can be measured using the Spectr...

Page 350: ...wer to the DUPLEX OUT connector can damage the instrument A message is displayed when an overpower conditions occurs Whenever possible use the RF IN OUT connector when testing transceivers to prevent damage from accidental transmitter keying If a reverse power condition triggers the internal protection circuit remove the reverse power signal and press the MEAS RESET key or turn the Test Set off an...

Page 351: ...s automatic or manual tuning of the RF Analyzer Auto tuning causes the RF Analyzer to find the signal with the greatest amplitude above 36 dBm and set the tune frequency for that signal Manual tuning requires the operator to set the tune frequency for the RF signal to be analyzed Operating Considerations Changing the Tune Mode also changes the RF frequency display Automatic tuning enables the TX F...

Page 352: ...Ant four dashes appear in place of digits for this measurement Use the Spectrum Analyzer1 to measure low level RF power 200 mW at the ANT IN port 1 Spectrum Analyzer is optional on some Test Set models CAUTION Connecting a signal of 200 mW to the ANT IN port can cause instrument damage although internal protection circuits can typically withstand a short duration signal of 1 or 2 Watts If the over...

Page 353: ...353 10 Signaling Encoder AF Generator 2 ...

Page 354: ...llowing order AMPS NAMPS TACS NTACS CDCSS Continuous Digital Controlled Squelch System Digital Paging DTMF Dual Tone Multi Frequency Signaling Encoder EDACS Enhanced Digital Access Communication System Function Generator LTR Logic Trunked Radio Registered trademark of EF Johnson Company MPT 1327 Trunked Radio NMT Nordic Mobile Telephone Tone Sequence When the Test Set is turned on AFGen1 defaults ...

Page 355: ...AMPS NTACS Encoder modes use the same Forward Control Channel FOCC settings and output format However the Forward Voice Channel FVC information is different Control and Voice Channel Identifiers The Control and Voice channel fields are available in separate menus The Channel field is used to select the Cntl FOCC or Voice FVC menu Fields available only in the Forward Control Channel menu have FOCC ...

Page 356: ...hannel FVC Figure 87 NAMPS NTACS Mode Forward Voice Channel FVC AFGen2 To This field determines whether the data stream modulates the RF Generator or is output through the AUDIO OUT connector Audio Out Audio output coupling selects ac or dc coupling of the AF Generator to the AUDIO OUT connector when AFGen2 To is set to Audio Out amps en3 wmf nmps en1 wmf ...

Page 357: ... bit has been received and a defined number of delay bits has been counted The delay bit value is set in the B I Delay field B I Delay FOCC Busy idle delay determines the number of bits that are counted before a busy idle bit changes from the Idle state to the busy state This function is used with the WS Delay and 1stBitDly settings in the Busy Idle field Bursts This field defines the number of ti...

Page 358: ...ailable only in NAMP NTAC mode This field is used to specify the 24 bit digital supervisory audio tone DSAT sequence The seven standard sequences are 2556CB 255B2B 256A9B 25AD4D 26AB2B 26B2AD and 2969AB These codes are the inverse of the seven DST codes DSAT is output continuously when Send DSAT is selected and is only stopped when Stop DSAT is selected If message or DST information is sent using ...

Page 359: ... and Filler Data Format 7 LWV 7 7 7 LWV QIRUPDWLRQ 3DULW 3DULW LWV RQWHQWV RI WKH 0HVVDJH RU LOOHU LHOG 25 25 LV RXWSXW LQ WKLV VHTXHQFH LWV LWV LWV LWV LWV 277 1 25 6 1 5 3 7 2 25 5 3 7 2 25 5 3 7 2 25 5 3 7 5 3 7 5 3 7 25 25 2 2 25 277 1 LWV LWV LWV LWV XV GOH LWV 7KH GDWD RX HQWHU KHUH 2 6WUHDP 6WUHDP 0HVVDJH 0HVVDJH LOOHU LOOHU 2 ...

Page 360: ...usly when Send Filler is selected or after a control message has been sent using Send The control message is stopped whenever Stop Filler Filler Channel Data Rate Polarity or AFGen2 To is selected Both filler fields must be full seven digits for the forward control channel information to be structured correctly Do not leave any blank spaces FM Coupling This field alters the FM modulator to allow D...

Page 361: ...filler information the message information can only be input in full seven digit lines Also message streams A and B must have the same number of lines in them 7 LWV 7 7 7 LWV QIRUPDWLRQ 3DULW 3DULW LWV RQWHQWV RI WKH 0HVVDJH RU LOOHU LHOG 25 25 LV RXWSXW LQ WKLV VHTXHQFH LWV LWV LWV LWV LWV 277 1 25 6 1 5 3 7 2 25 5 3 7 2 25 5 3 7 2 25 5 3 7 5 3 7 5 3 7 25 25 2 2 25 277 1 LWV LWV LWV LWV XV GOH LW...

Page 362: ... of dotting word sync parity and the 11 repetitions of these parameters in the FVC message stream is done automatically Operating Considerations The entire field must contain data no blank spaces are allowed SAT is turned off while the FVC message stream is being sent RQWHQWV RI WKH 0HVVDJH RU LHOG 7 7 3DULW LWV LWV LWV 0HVVDJH RUG QIRUPDWLRQ 9 0HVVDJH LV RXWSXW LQ WKLV VHTXHQFH 7KH GDWD RX HQWHU ...

Page 363: ...are combined with 12 parity bits calculated by the encoder to output a 40 character data stream This information is output when the Message DST field is set to Message and Send is selected Operating Considerations The entire field must contain data no blank spaces are allowed DSAT is turned off while the FVC Message Stream is being sent 3DULW ELWV 0HVVDJH QIR ELWV ELWV ELWV ELWV ELWV 6 7 6 7 6 7 6...

Page 364: ...he Encoder The DST values are DAA934 DAA4D4 DA9564 DA52B2 D954D4 D94D52 and D69654 Polarity This setting determines the relationship between the signaling logic levels and the effect on the modulated signal Normal Operation When this field is set to Norm a logical high 1 causes the output level of the AF Generator to be more positive The peak level is listed in the Data Level field A logical low 0...

Page 365: ...ing this field causes the FVC or FOCC message to be output Operating Considerations When sending an FOCC message stream the contents of the Filler are continuously output after the message data has been sent Stop Filler is used to stop the output Send Filler FOCC Selecting this field causes the contents of the Filler fields for Stream A and Stream B to be output The fillers continue to be output u...

Page 366: ...nuously until Stop is selected Step is not used in the AMPS TACS mode Standard This field selects the signaling standard used for your radio The standard values used for each signaling format are automatically filled in when the standard is selected Stop Selecting this field stops the message being output Stop DSAT FVC This field is available only in NAMP NTAC mode Selecting this field stops the d...

Page 367: ...fers software packages to test your cellular phone in a fraction of the time normally required for manual testing You can choose any combination of tests from full parametric testing to a single test The software is shipped on a memory card that inserts directly into your Test Set and it comes with complete documentation and a blank SRAM memory card for storing your test procedures and test data E...

Page 368: ...ntinuous Digital Controlled Squelch System CDCSS Encoder generates signals to test radios that use a digitally encoded signal to turn squelch on and off The encoder can be used to modulate the RF Generator or it can be output through the front panel AUDIO OUT connector Figure 92 The CDCSS Encoder Mode Screen cdcsen1 wmf ...

Page 369: ... optimum waveform quality set this field to DC when using the AUDIO OUT connector This is especially beneficial at low data rates Bursts This field defines the number of data streams output each time Send is selected This function works only when the Send Mode field is set to Burst Code This field defines the 3 digit octal code used to identify the radio being accessed Data Rate This field specifi...

Page 370: ...is helpful to restore the proper data polarity when the transmitter repeater or receiver used in your communications system has an odd number of inversions causing the received data to be inverted when decoded This is common when a signal is translated to a lower frequency using an LO whose frequency is higher than the signal s frequency or when inverting amplifiers are used Normal Operation When ...

Page 371: ...tally coded squelch standard for your radio Stop Selecting this field stops the data stream being output when the Send Mode is set to Cont or Burst After this field is selected the current repetition of the data stream is finished and the turn off code is output TOC Time Turn off code time defines the length of time the turn off code is output Operating Considerations This code is always the last ...

Page 372: ...it octal code you supply that corresponds to your radios digital squelch code number A fixed octal 4 coded 100 A mathematically derived 11 bit error detection code The data stream is output serially beginning with the error detection code The Turn Off Code The turn off code is a tone burst that is output after the data stream has been output the desired number of times or after a series of bursts ...

Page 373: ...rs using a variety of digital access formats and frequencies The signal can be used to modulate the RF Generator or it can be output through the front panel AUDIO OUT connector FM is typically selected by using the RX TEST screen to set up the RF Generator to generate the encoded carrier Figure 94 The Digital Paging Encoder Mode Screen digi en1 wmf ...

Page 374: ...oupling of the encoder to the AUDIO OUT connector when the upper AFGen2 To field is set to Audio Out Operating Considerations This field should be set to DC for best results when using the AUDIO OUT connector and low data rates Bursts This field defines the number of digital data streams output each time Send is selected This function works only when the Send Mode field is set to Burst Data Rate T...

Page 375: ...n This setting specifies which of the four types of messages to send The pager s response is determined by the Pager Type field setting and the pager s configuration For example when testing a POCSAG pager set for tone only operation functions 00 through 11 typically correspond to the pager beeping one to four times If the pager is set for Alpha Numeric operation the functions correspond to a comb...

Page 376: ...our pager responds to a received signal Tone Only beeps Numeric displays numbers or Alpha Numeric displays numbers and other characters Polarity This setting determines the relationship between the data stream s logic levels and the effect on the modulated signal Normal Operation When this field is set to Norm a logical high 1 causes the output level of the AF Generator to be more positive causing...

Page 377: ...format used when Send is selected to output a sequence Single outputs the entire sequence once Burst outputs the sequence the number of times specified in the Bursts field Cont causes the sequence to be output continuously until Stop is selected Standard This field selects the digital paging standard for the pager being tested POCSAG or GSC Golay Sequential Code Stop Selecting this field stops the...

Page 378: ...equence Encoder The DTMF Sequence Generator creates Dual Tone Multi Frequency tone sequences of variable frequency amplitude and duration It s signal can be used to modulate the RF Generator or it can be output through the front panel AUDIO OUT connector Figure 95 The DTMF Sequence Encoder Mode Screen dtmf enc wmf ...

Page 379: ...ng selects ac or dc coupling of the DTMF Sequence Generator to the AUDIO OUT connector when the upper AFGen2 To field is set to Audio Out Bursts This field defines the number of sequences output each time Send is selected This function only works when the Send Mode field is set to Burst FM Coupling This field alters the FM modulator to allow DCFM from internal and external modulation sources This ...

Page 380: ...ormat used when Send is selected to output a sequence Single outputs the entire sequence once Burst outputs the sequence the number of times specified in the Bursts field Cont causes the sequence to be output continuously until Stop is selected Step allows you to output the tones in a sequence one at a time by pressing Send for each tone Standard This field selects the DTMF standard used for your ...

Page 381: ...The level of each low tone and high tone individually generate 1 5 kHz deviation The tones are summed to produce 3 kHz deviation Example 2 3 kHz deviation Twist 2 5 dB Pre emphasis off The high tone has 2 5 dB a factor of 1 334 more deviation than the low tone The two tones are summed to produce 3 kHz peak deviation Therefore the low tone s deviation is 1286 Hz and the high tone s deviation is 171...

Page 382: ...coder AF Generator 2 EDACS Encoder EDACS Encoder This encoder simulates an Ericsson GE EDACS Enhanced Digital Access Communications System repeater site to test trunked mobile radios using that format Figure 96 The EDACS Trunked Radio Encoder Mode Screen edac en1 wmf ...

Page 383: ...level is adjusted using the Signaling Dev and Sub Audible Dev fields Changing the AFGen2 To setting automatically alters the unit of measure for both of these fields kHz or mV Audio Out The audio output coupling field selects ac or dc coupling of the encoder to the AUDIO OUT connector Because the EDACS Encoder sends low speed data this field should be set to DC when the AUDIO OUT port is used The ...

Page 384: ... sends low speed data this field should be set to DC Group ID This field is used to specify the group identification number for the trunked radio group your radio is set up to access Handshake This field is used to get the mobile up on a working channel after it has accessed the control channel When Send is selected the control channel message is output at the receive frequency specified in the Co...

Page 385: ...ndard field When this field is set to Invert a logical high 1 causes the output level of the encoder to be negative A logical low 0 causes the level to become positive When using FM the RF Generator would then produce a negative frequency deviation for a positive going digital transition the opposite of the normal mode of operation This field is automatically set to the correct polarity by the Sta...

Page 386: ...To is set to Audio Out the displayed units are µV mV or V See Also AFGen2 To field description on page 383 Site ID This field is used to specify the identification number of the repeater site being simulated by the encoder Standard This field specifies the signaling standard used by the radio 4800 bps narrowband or 9600 bps wideband In addition to telling the encoder and decoder which system is be...

Page 387: ...rmal ly used setting for testing EDACS radios When AFGen2 To is set to AM the displayed unit is When AFGen2 To is set to Audio Out the displayed units are µV mV or V See Also AFGen2 To field description on page 383 Stop This field is used to stop the control channel or working channel data from being output The carrier continues to be output but without the digital modulation Working Channel Numbe...

Page 388: ...rmally required for complete manual testing Under software control you can perform receiver and transmitter tests on several channels in succession very quickly You can choose any combination of tests from full transmitter and receiver testing to a single test The software is shipped on a memory card that inserts directly into your Test Set and it comes with complete documentation and a blank SRAM...

Page 389: ... receiver unsquelches to allow the modulating signal speech or a test tone to be heard from your mobile s speaker If the audio output speaker connection of your mobile is connected to the AUDIO IN connectors of the Test Set you can then make receiver audio quality measurements such as distortion at 1 kHz and SINAD Testing the Mobile s Transmitter The EDACS Encoder s information is used to help the...

Page 390: ...g channels Other identification information is also pre programmed into the mobile such as the Logical ID and Group ID numbers You cannot test an EDACS mobile without entering these values into the Encoder Connect the Mobile to the Test Set 1 Press the PRESET key on the Test Set 2 Connect the mobile s antenna port to the Test Set s RF IN OUT port 3 Connect the mobile s audio output to the AUDIO IN...

Page 391: ...r your mobile 6 Enter the Working Channel settings The Number is the working channel number programmed into your mobile that you want the mobile to be sent to The RX Frequency is the mobile s receive frequency for the selected working channel The TX Frequency is the mobile s transmit frequency for the selected working channel 7 Enter the Logical ID number 8 Enter the Group ID number 9 Enter the Si...

Page 392: ...q with 3 kHz deviation AFGen1 To in addition to the subaudible EDACS signaling from the encoder AFGen2 3 Set the volume control on your mobile to about half of full scale You may or may not hear the 1 kHz tone from your radio s speaker depending on how the external speaker connection affects the speaker 4 Turn up the VOLUME of the Test Set You should be able to hear the 1 kHz tone Your mobile s SI...

Page 393: ...coder The Function Generator provides single tone audio frequency signals of various waveforms amplitudes and frequencies Its signal can be used to modulate the RF Generator or it can be output through the front panel AUDIO OUT connector Figure 97 The Function Generator Encoder Screen func ec wmf ...

Page 394: ... the amplitude can be set in units of rms or peak voltage This is done in the Sine Units field that appears when Audio Out is selected In all other cases the amplitude is always set in peak voltage Audio Out Audio output coupling selects ac or dc coupling of the Function Generator to the AUDIO OUT connector when the upper AFGen2 To field is set to Audio Out FM Coupling This field alters the FM mod...

Page 395: ...r 2 Function Generator Encoder Waveform This field selects the desired waveform for AF Generator 2 The available waveforms are as follows Sine wave Square wave Triangle wave Ramp positive going and negative going DC Universal Noise Gaussian Noise ...

Page 396: ... This Encoder mode is used to test trunked mobile radios that use the EF Johnson LTR Logic Trunked Radio format Two different trunking messages can be used Message1 and Message 2 to allow you to change radio operation while the encoder is running Figure 98 The LTR Trunked Radio Encoder Mode Screen Itr en1 wmf ...

Page 397: ...ac or dc coupling of the LTR Encoder to the AUDIO OUT connector when the upper AFGen2 To field is set to Audio Out Bursts This field defines the number of times Message 1 or Message 2 is output each time Send is selected This function works only when the Send Mode field is set to Burst Data Rate Enter the LTR signaling data rate used for your radio The standard and default value is 297 6 bits per ...

Page 398: ... ID 1 ID 2 Enter the transmit or receive ID number programmed into your radio LTR message This field selects which message Message1 or Message2 is output when Send is selected The underlined message is output Polarity This setting determines the relationship between the LTR Encoder s data stream logic levels and the effect on the modulated signal When this field is set to Invert a logical high 1 c...

Page 399: ...ce Burst outputs the message the number of times specified in the Bursts field Cont causes the message to be repeated continuously until Stop is selected Step is not used with this encoder mode Standard This field selects the trunked radio standard for your radio Stop Selecting this field stops the message being output when the Send Mode is set to Cont or Burst After this field is selected the cur...

Page 400: ...enerator 2 Using the LTR Encoder Using the LTR Encoder Figure 99 How Message 1 and Message 2 Fields are Used to Create Trunking Data DWD LUHFWLRQ ELWV ELWV ELWV ELWV ELWV ELWV ELWV 6 1 5 2 72 5 3 7 5 25 5 2 20 11 2 5 2 2 2 5 2 5 5 3 7 5 5525 76 UHD UHD RWR RWR RPH RPH UHH UHH ...

Page 401: ...eceive frequency for the selected channel Note that the preset function caused the Amplitude to be set to 80 dBm and AFGen1 is set to 1 kHz FM with 3 kHz deviation These settings should work with your radio to produce the audio tone 9 Access the ENCODER screen and select the LTR mode 10 Enter your Area Number 0 or 1 in the Area 1 field 11 Enter the home channel number in these fields Goto 1 Home 1...

Page 402: ...r the home channel s receive frequency in the RF Gen Freq field 8 Set AFGen1 To to Off 9 Set the AF Anl In field to FM Demod 10 Access the ENCODER screen and select the LTR mode 11 Set up Message 1 with idle message data a Enter your Area Number 0 or 1 in the Area 1 field b Enter the home channel number in these fields Goto 1 Home 1 and Free 1 c Enter 255 in the ID 1 field to establish an idle cha...

Page 403: ...onds to establish the new channel You can change the RF Generator s frequency using a global USER key after entering an increment value equal to the required channel offset This procedure must be done very quickly to work The best way to perform a channel change is to use an HP IB or IBASIC program to change the RF Generator s frequency to the new channel frequency immediately after the appropriat...

Page 404: ... enter the address qualifier The address qualifier is a bit mask It indicates the number of bits in the identity field which have to be compared by a radio unit RU when it is deciding whether the ALH or MOVE message is addressed to that RU The address qualifier is a two digit decimal integer without leading zeros It has the range 0 through 20 and its default value is 0 A value of 0 corresponds to ...

Page 405: ...s on the forward control channel The value entered in this field is translated to a frame length according to table 9 The aloha number is a two digit decimal integer without leading zeros It has a range 0 through 15 and its default value is 5 Table 9 Aloha number encoding for 4 bit aloha numbers Aloha Number Frame length 0 Not a frame marker 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 12 12 15 13...

Page 406: ...the signaling hardware is enabled and is retransmitting a basic control channel structure as defined by the content of the filler buffer Refer to Forward Control Channel Message and Filler Buffers on page 408 for an explanation of the filler buffer One or more timeslots in the filler pattern can be overlaid by messages from the control message buffer under control of the Send field Traffic In this...

Page 407: ...e MPT 1327 Encoder screen Delay Parameter for Repeat Transmissions This control is only available using IBASIC commands it is not displayed on the MPT 1327 Encoder screen In the aloha message there is a bit field which indicates to the radio unit RU how long it should wait for a response from the TSC If the RU does not receive a response within this period it should re issue the request This is ge...

Page 408: ...ements can be performed During testing it is necessary to generate the forward control channel continuously initially for the RU to acquire and validate the control channel for exchanging the necessary call setup signaling thereafter for the RU to remain locked onto the control channel awaiting exchange of further signaling This also prevents the RU from re entering control channel acquisition pro...

Page 409: ... For messages with an odd number of data codewords the padding word must be generated by IBASIC An example of the format is given in the sequence of commands below It defines a two timeslot random access frame with a broadcast message transmitted on channel 212 of system 490116 ENC MPT1327 FILL DATA 1 ALH 0 ALLI 212 0 0 2 ENC MPT1327 FILL DATA 2 ALH 0 ALLI 212 0 0 0 ENC MPT1327 FILL DATA 3 BCAST 2...

Page 410: ...quence of Events in Assembling a Signaling Message 6 6 1 1 50 5 66 0 5 3 ENC MPT1327 FILL DATA 1 ALH 100 0 0 1 ALH 0 8191 100 0 0 1 80FFFC02E001 PARITY CCSC D9I9 4567F697AAAAC4D7 4567F697AAAAC4D780FFFC02E001D919 5 8 5 6 1 1 5 5 4567F697AAAAC4D780FFFC02E001D919 1 2 32 1 2 5 6 5 1 PFIX 0 IDENT 8191 etc SETTING DEFAULTS ...

Page 411: ...meslot locations of the filler buffer are cleared by the following command ENCoder MPT1327 FILLer CLEAR n Where n selects the timeslot to be cleared and has the range 1 through 32 The whole buffer is cleared by the command ENCoder MPT1327 FILLer RESET When the Test Mode field is in Control mode the signaling firmware hardware will cycle through the defined part of the filler buffer transmitting ea...

Page 412: ...mmand ENCoder SEND If the encoder is configured for single operation the message buffer contents will be sent once If the encoder is configured for burst or continuous operation the control channel message buffer can be de activated by the following HP IB command ENCoder STOP The ENC STOP ENC SEND command sequence is also an UPDATE command New timeslot contents written using ENC MPT1327 MESS CONT ...

Page 413: ...AR n where n is the timeslot to be cleared and has the range 1 through 32 In addition the whole message buffer can be cleared by the following command ENCoder MPT1327 MESSage CONTrol RESET Traffic Channel Message Buffer This control is only available using IBASIC commands it is not displayed on the MPT 1327 Encoder screen When the RU under test moves to a traffic channel the IBASIC test program ne...

Page 414: ...uffer timeslot 1 and any contiguous timeslots are sent Refer to figure 104 Figure 104 Traffic Channel Message Generation Control and Traffic Channel Message Structures This control is only available using IBASIC commands it is not displayed on the MPT 1327 Encoder screen In both control and traffic mode the signaling transmissions commence with the standard link establishment time LET preamble and...

Page 415: ...Encoder Figure 105 Forward Control Channel Message Structure Figure 106 Traffic Channel Message Structure 7 35 0 6 1 5 66 2 25 0 66 7 0 6 27 76 ESV PV 5 66 2 25 2 25 0 66 3 5 7 6 6 6 6 3 5 7 35 0 237 2 7 2 25 6 5 66 2 25 6 17 35 0 7 7 0 66 7 0 6 27 76 ESV PV ...

Page 416: ... transmission G Continue to generate the traffic channel until the message is completed then produce a hang over bit and stop The hang over bit is followed by one off bit before the next sequence begins H Stop control channel generation after the next bit I Stop traffic channel generation after the next bit J Turn off 1200 Hz sine wave on completion of the next symbol K Turn off 1800 Hz sine wave ...

Page 417: ... page 407 The large volume of information required to explain the MPT 1327 system is beyond the scope of this manual Documents explaining the structure and specifications of this system should be obtained from the radio communications regulatory agency of the appropriate country Using Automated Test Software The HP 11807A Option 012 MPT 1327 Trunked Radio Tests software provides comprehensive auto...

Page 418: ...ntial that the 15 bit system identity transmitted by the Test Set matches the system identity programmed into the radio unit If there is not a match the RU will not recognize the forward control channel and no communication will be possible Radio Unit Under Test The Radio Unit Under Test function uses two input fields a 7 bit Prefix field and a 13 bit Ident field This allows you to enter the prefi...

Page 419: ...the Test Set simulates calls from a third party For this purpose it is necessary to specify the simulated calling unit s number The simulated calling party could be any radio or line unit It could also be one of the special idents indicating for example a system wide call or a call from a PABX or PSTN gateway The prefix is a three digit decimal integer with leading zeros It has the range 0 through...

Page 420: ...cate between the Mobile Station MS Base Station BS and Mobile Telephone Exchange MTX The signal is output under program control from the NMT Decoder screen The operation of the NMT Encoder is strongly dependent on functions used in the NMT Decoder screen For information about using the NMT Encoder and Decoder see Using the NMT Decoder Encoder on page 321 and Creating NMT Tests on page 326 Figure 1...

Page 421: ...annel Power This channel s power setting Each power setting represents one of the four available levels allowed by the NMT standards Valid Entry Range 0 through 3 NMT Frames Affected 3d 3dTA2 4b 4bTA2 10aAC Operating Considerations This field is only used with the STD900 standard Add Info The additional information field contains various types of information depending on the frame type Several fra...

Page 422: ... is output through AUDIO OUT The lower field sets the amplitude including Off Table 12 NMT Additional Information Bits Frames Content of Additional Information Digits 1a 1a 1a H1H2H3H4H5H6H7H8H9H10 All from Add Info field 1aS 1a S 1a S H1H2H4H5H6H7H8H9H10 From Add Info field H3 From Bate Save field 1b 1bTA1 1bTA2 H1H2H3H4H5H6H7 From Add Info field H8H9H10 From Area field 1bS H1H2H4H5H6H7 From Add ...

Page 423: ...ntry Range 0 through F hex NMT Frames Affected 20 25 Operating Considerations This field is only used with the STD900 standard Area The area number field identifies which MTX is used to call an MS This identification prevents MS to BS calling problems caused by co channel interference Valid Entry Range 1 through 4 NMT Frames Affected 1b 1bS 1bTA1 1bTA2 2a 2a 2a 2e 3bTA2 3b 3bTC2 4 4TA2 4b 4bTA2 10...

Page 424: ...field provides the 3 digit hex code that identifies which BS an MTX is communicating with Valid Entry Range 000 through FFF hex NMT Frames Affected 20 21b 21c 22 Operating Considerations This field is only used with the STD900 standard Batt Save The the length of the battery saving period in 5 second increments For example a setting of 5 produces a 25 second period Valid Entry Range 0 through 7 NM...

Page 425: ...ilable channels Table 13 lists the valid channel assignments for Calling Traffic and Access channels Calling Channel Power This field specifies the calling channel s power setting Each Power setting represents one of the four available levels allowed by the NMT standards Valid Entry Range 0 through 3 NMT Frames Affected 1a 1a 1a 1aS 1a S 1a S 1b 1bS 2a 2a 2a 2b 2b 2b 2c 2c 2c 2d 2d 2d 2e 2f 10a 10...

Page 426: ... field also affects how frames are interpreted by the decoder when determining the type of frame being received FM Coupling This field alters the FM modulator to allow DCFM from internal and external modulation sources This field also selects ac or dc coupling between the RF Generator s frequency modulator and the rear panel MODULATION INPUT connector Meas Ch The measurement channel number field s...

Page 427: ...tatus information Valid Entry Range 000000 through FFFFFF hex NMT Frames Affected 22 27 28 MSN The mobile subscriber number field specifies the unique seven digit code that identifies an MS Valid Entry Range 0000000 through FFFFFFF hex NMT Frames Affected 2a 2a 2a 2b 2b 2b 2c 2c 2c 2d 2d 2d 2e 2f 3a1 3a2 3b 3bTA2 3bTC2 3c 3d 3dTA2 5a 5b 10a 10aAC 10b 10c 10d 11 11a 11b 12 13a 13b 14a 14b Phi Signa...

Page 428: ...n used attenuates the lower frequency tone 1200 Hz at 1200 bps to 2 3 of the field level setting SIS Challenge The subscriber identity security challenge field is used to confirm a subscriber s MS identity Valid Entry Range 0000000 through FFFFFFF hex NMT Frame Affected 7 Operating Considerations This field is only used with the STD900 standard SIS Response The subscriber identity security respons...

Page 429: ...e executed in an NMT program The interpretation of received frames The following standards are available STD450 Transmit and receive frequencies are in the 453 to 467 5 MHz range STD900 Transmit and receive frequencies are in the 890 to 960 MHz range See Also Calling Channel Number field description on page 425 TCI The tariff class information field is used to specify MS billing information to the...

Page 430: ... Traffic Channel Alt Number This field specifies the alternate traffic channel used for conversation after communications have been established Valid Entry Range 1 through 2023 NMT Frames Affected 3a2 3bTC2 3c Operating Considerations This setting affects the RF generator and analyzer frequencies used when the TCHAN TC2 and RCHAN TC2 or TCHAN TCA and RCHAN TCA programming commands are used See Als...

Page 431: ...30 Operating Considerations This setting affects the RF generator and analyzer frequencies used when the TCHAN TC1 and RCHAN TC1 or TCHAN TCM and RCHAN TCM programming commands is used See Also Calling Channel Number field description on page 425 Traffic Channel Main Power This field specifies the power of the main traffic channel Each power setting represents one of the four available levels allo...

Page 432: ...ront panel AUDIO OUT connector Figure 108 The Tone Sequence Encoder Mode Screen AFGen2 To This audio frequency generator control contains two fields The upper field determines whether the tone sequence modulates the RF Generator or is output through the front panel AUDIO OUT connector The lower field sets the amplitude including Off Audio Out Audio output coupling selects ac or dc coupling of the ...

Page 433: ... Emp This field determines whether the encoder signal passes through or bypasses 750 ms pre emphasis Send Selecting this field causes the tone sequence to be output Send Mode This field selects the output format used when Send is selected to output a sequence Single outputs the entire sequence once Burst outputs the sequence the number of times specified in the Bursts field Cont causes the sequenc...

Page 434: ...tions The Symbol Sequence field at the top of the screen is used to enter and edit the tone sequence The sequence uses the symbol numbers Sym listed in the Symbol Def inition table A total of 16 symbols can be entered Below the Symbol Sequence is the sequence on off times table This table contains three entries Seq Num identifies which position in the Symbol Sequence is affected by the On and Off ...

Page 435: ...435 11 Help Screen ...

Page 436: ... wide variety of instrument functions After this screen is accessed push the cursor control knob to display the help Index The knob is then used to select the desired topic Once you have accessed the desired information you can return to the Help Index by pushing the cursor control knob To exit the HELP screen and return to the previous screen press the PREV key ...

Page 437: ...437 12 I O Configure Screen ...

Page 438: ...iptions Figure 109 The I O Configure Screen The I O CONFIGURE screen s fields are used to specify HP IB and serial communications settings HP 8920As must be equipped with option 003 This screen is accessed by selecting the More field directly below the To Screen menu and selecting IO CONFIG ioconfig wmf ...

Page 439: ...erations The address can be set from 0 to 30 by using the DATA keys or by pushing and then turning the cursor control knob This setting is retained when the instrument is turned off IBASIC Echo This field enables disables screen and error message echoing from IBASIC This setting is retained when the instrument is turned off Inst Echo This field enables disables character and screen echoing when us...

Page 440: ...strument is turned off Parity This field specifies the serial communication parity setting when using the rear panel serial port 1 This setting is retained when the instrument is turned off 1 Optional on some Test Set models Rcv Pace The receive pace field is used when receiving serial data Xon Xoff lets the Test Set talk to the transmitting device to alter the rate of the data being sent None dis...

Page 441: ...e Programmer s Guide for information on creating RAM Disks This is part of the same memory used when internal is specified and may have to be erased when loading very large IBASIC programs A Save Recall Device is not initialized message is displayed if you try to save or recall an instrument setup when a RAM disk has not been created Disk is used with external disk drives The Mode field must be se...

Page 442: ... command causes the printer to take control of the serial port until printing is done This setting is maintained after the instrument is turned off See Also Programmer s Guide Stop Length This field specifies the number of stop bits used for serial communications when using the rear panel serial port 1 Selecting this field displays a list of stop bit choices This setting is maintained after the in...

Page 443: ...443 13 Message Screen ...

Page 444: ... was turned on The type of error and the time it occurred are listed If one error occurs more than once before a different error is encountered the number of times it occurred and when it occurred are displayed All messages are shown until the entire display is filled If enough errors occur the MESSAGE screen will scroll the first messages past the top of the screen These messages cannot be retrie...

Page 445: ...445 14 Oscilloscope Screen ...

Page 446: ...ope Screen and Menus The OSCILLOSCOPE screen s controls are arranged by menu The menus are accessed using the Controls field The field descriptions are grouped by menu names Assigning global USER keys to the most used functions on the menus allows you to access the functions without having to change menus during operation oscscrn wmf ...

Page 447: ...ations A centerline is displayed for the signal when an offset is used When the vertical offset is 0 00 the marker level is referenced to the center line generated by the vertical offset feature not the center line of the screen Vert div Vertical sensitivity sets the vertical amplitude per division Operating Considerations The value for this field is selected from a list of choices Depending on th...

Page 448: ...The level displayed for each pixel is the average level of the sample or samples taken for each pixel Marker To Peak causes the marker to move to the maximum value of the average level measured on the display Peak causes the marker to move to the minimum value of the average level measured on the display Because these functions look at the average value for each displayed pixel the marker may not ...

Page 449: ...at a signal from the FM demodulator the amplitude is given in units of kHz When the Vert Offset field is 0 00 the displayed marker level is referenced to the center line generated by the vertical offset feature not the center line of the screen The REF SET function can be used with this measurement to display levels relative to a specific value See Setting A Measurement Reference on page 70 Marker...

Page 450: ...he encoder must be sending its signal to trigger the oscilloscope 1 Optional on some Test Set models Auto Norm This field specifies how the trigger level is set Auto automatically triggers if a triggering signal is not detected within approximately 50 ms of the last trigger Norm requires a specific triggering signal before triggering Operating Considerations Automatic triggering should be used for...

Page 451: ...ll pointers that appear on each side of the screen only used for internal triggering The lower field Pos Neg specifies whether triggering happens when the waveform being measured is positive going Pos or negative going Neg Pre Trig This field specifies the number of horizontal divisions displayed previous to the trigger point It allows you to see what the signal looked like before the trigger poin...

Page 452: ... screens Figure 115 Oscilloscope Input Indicator Using the Scope To Field The Scope To field in the AF ANALYZER screen allows you to look at the signal at different stages in the AF Analyzer s process Refer to the AF ANALYZER screen description to understand the different Scope To choices Except for the Input setting all the choices are capacitively coupled If the signal to be measured is 1 Hz use...

Page 453: ... your printer Images are printed using either the front panel PRINT function see Printing a Screen in volume 1 or the Print All USER key available on some TESTS environment screens Refer to your HP 11807 software manual for information on how to use your printer to print automated test results ...

Page 454: ...n HP 8920As only if your instrument has Option 103 Abort Print Select this field to interrupt the print in progress FF at End This field can only be controlled programmatically It is used to specify if you want a form feed at the end of printing FF at Start This field can only be controlled programmatically It is used to specify if you want a form feed at the start of printing prntconf wmf ...

Page 455: ...nter Address This field is used to specify the address of an HP IB printer This field is only displayed if the Printer Port field is set to HP IB Print Data Destination This field will be used in the future to select whether the data is formatted specifically for printers or for some other device such as a computer At this time the only selection is Printer Printer Port This field is used to selec...

Page 456: ...456 S HP892XX USRGUIDE manual prinscrn fb Chapter 15 Print Configure Screen Field Descriptions ...

Page 457: ...s of the rear panel RADIO INTERFACE parallel connector A functional description of the radio interface followed by field descriptions and operating instructions is included in this chapter For more information see chapter 24 Connector Key and Knob Descriptions and the Programmer s Guide ...

Page 458: ...anel or an HP IB command is sent Data transfer is also half duplex meaning that data input and output cannot occur simultaneously The parallel output data lines are implemented using 16 LM339M open collector voltage comparators with pull up resistors provided on the Radio Interface board The Radio Interface provides two methods for determining the logic level for data output 1 Use the default inte...

Page 459: ... panel display field called Ext TX Key Refer to Key Out 1 on page 574 and Key Out 2 on page 574 Interrupt Capability Two pins on the Radio Interface are designated as Interrupt lines 1 and 2 If Interrupt 1 or 2 is armed by selecting Arm on the RADIO INTERFACE screen and the corresponding pin is grounded the word Tripped is displayed on the RADIO INTERFACE screen and a status register bit is set Re...

Page 460: ... Chapter 16 Radio Interface Screen Field Descriptions Field Descriptions Figure 117 The Radio Interface Screen Input Data This field trips the Test Set to latch the data on the parallel data pins that have been designated as inputs riscrn wmf ...

Page 461: ...s byte and then reading bit 13 of the Hardware 1 status register The Interrupt 1 pin can also be set as the HP IB SRQ mask Once the interrupt has been tripped it must be re armed To do this remove the low on the Interrupt 1 pin and then set the Interrupt 1 field to Disable and then set it to Arm Interrupts can be disabled and any external signals will have no effect on the interrupt Both Interrupt...

Page 462: ... the data to be output on the parallel data lines Operating Considerations The data is entered as a hexadecimal number that can range from 0000 to FFFF To determine the number convert the binary weight of the pins that you want to set high to hexadecimal then add Pin 19 D0 is the least significant bit For example 0008 would set pin 22 D3 high and the rest of the pins low The field will show the en...

Page 463: ...ge The two choices for the Logic Voltage are 5 1 V from the default internal Logic Voltage supply or 5 1 V to 20 V from an external power supply The Logic Voltage affects both the input and output logic levels on the Radio Interface board When data is output the logic high voltage level will be determined by the Logic Voltage applied through internal 3 16 k ohm pull up resistors When data is input...

Page 464: ...c Voltage pin 9 would give 11 8 0 34 4 V For data output calculate the logic high level using this formula Logic Voltage 0 7 through a 3 16 k ohm pull up resistor A logic low on the data output will be near 0 V depending on the amount of current the comparator is sinking For example if the output current is 4 mA the output voltage will be about 250 mV 31 6 k 56 2 k LM 339M 5 1 V Default Logic Volt...

Page 465: ... description on page 462 The need for configuring pins as inputs is a result of the half duplex hardware architecture of the bus The 16 I O pins on the parallel data bus are connected to both the input data comparators and the output data comparators Because the output comparators are open collector a logic low makes it impossible to input a logic high since the output transistor is essentially cl...

Page 466: ...ta transfer rate for data output is primarily determined by the speed of the IBASIC or external program not the ability of the Test Set s internal CPU to access and output the data on the parallel lines or the output loading capacitance If loading capacitance is below 158 pF the Test Set s CPU can send data at about 200 Kb s The time for a program line to execute is typically greater than this The...

Page 467: ...marily intended to configure parallel data lines as inputs or outputs See the Input Data field description on page 460 Parallel Data Strobe Logic Voltage LM 339M Parallel Data Strobe Output Data Fixed Ref erence Logic Voltage LM 339M Output Data Line Data Output 1 of 16 1 0 Strobe POL High Low External device should latch data on Strobe POL Level to allow Output Data time to settle Pin 13 Pins 9 3...

Page 468: ... the Radio Interface s Logic Level on page 463 is detected When tripped the field directly below Arm Disable will change from Armed to Tripped To re arm the next interrupt you must first disable the interrupt then select Arm Besides displaying the word Tripped an interrupt condition will set a bit in one of the Test Set s status registers This makes it possible to generate SRQ interrupts or query ...

Page 469: ... Radio Interface Inputting Data over HP IB Use the following commands to configure the eight least significant parallel data bus lines as inputs by writing logic 1 s to them DISP RINT RINTerface PARallel CONFigure HFF hex or DISP RINT RINTerface PARallel CONFigure 255 decimal Use the following command to read the data on the parallel bus to the Test Set s internal CPU DISP RINT RINTerface PARallel...

Page 470: ...0 SEND hex Using Interrupts over HP IB Use the following command to arm Interrupt 1 DISP RINT RINTerface INTerrupt1 ARM Use the following command to disarm Interrupt 1 DISP RINT RINTerface INTerrupt1 DISARM Interrupt 1 and Interrupt 2 when armed will set bits in the Hardware Status Register 1 Group An SRQ interrupt can be generated when either of these interrupts is tripped or the Condition regist...

Page 471: ...471 17 RF Analyzer Screen ...

Page 472: ...0 HYLDWLRQ 0 HSWK HYHO 6 1 615 LVWQ UHT HYHO XUUHQW XWR 0DQXDO 0HDVXUHPHQW LVSOD UHD 6 1 7 H 2Q 2II XWR ROG GE 0 6 N LOWHU XWR 0DQXDO 7XQH UHT 0 PV 5 2 7XQH 0RGH QSXW 3RUW QSXW WWHQ 5 67 6 GE GE GE LJK 3RZHU WWHQXDWRU HUR 5 Q QW 5 1 7 3ZU HUR UHTXHQF RXQWHU 7R 5 UHT RXQWHU 17 1 1RUP LJK 6HQVLWLYLW 1RUPDO LJK 6TXHOFK 3RW 5 QW DWH 23 1 327 6LJQDO QDO HU 67 6 7 3RZHU 0HDVXUHPHQW 5HIHUHQFH ...

Page 473: ...measurement listed here is dependent on the AF Anl In settings See Also AC Level field description on page 496 AF Anl In field description on page 101 Displaying Measurements on page 57 AM Depth This field displays the percent depth of modulation of the AM signal The field is only visible when the AF ANL In field on the AF ANL screen is set to AM MOD or AM DEMOD rfascrn wmf ...

Page 474: ...er See Also MIC ACC on page 568 Distn This field displays the percent of distortion for a 1 kHz signal tone FM Deviation This measurement field displays the frequency deviation between the FM signal and the carrier The FM Deviation measurement field is only displayed when the AF Anl In field is set to FM Demod or FM Mod See Also AF Anl In field description on page 101 Displaying Measurements on pa...

Page 475: ... the upper area is set to Hold NOTE Oscilloscope and Decoder Interference After a signal is input the RF autoranging function Auto takes a small amount of time to determine the required input attenuator setting If your transmitter begins sending encoded information the instant it transmits the initial encoded information may not be decoded during the autoranging process The same situation can aris...

Page 476: ...ly 2 minutes before making any other measurements on this port The ANT IN antenna input connector provides a highly sensitive input for very low level signals such as off the air measurements You cannot measure TX RF Power on this screen using the antenna port However low level RF power at the antenna port can be measured using the Spectrum Analyzer 1 1 Spectrum Analyzer is optional on some Test S...

Page 477: ...NT IN port 1 Optional on Test Sets Squelch This setting determines the squelch operation when demodulating FM AM or SSB signals Three settings are available Pot uses the front panel SQUELCH knob for squelch level adjustment Open disables squelch operation Fixed sets the squelch to a fixed level disabling the front panel SQUELCH knob control Operating Considerations Most measurement processes on th...

Page 478: ...C Level Current DC only 1 Operating Considerations This is a priority control field Accessing the RX TEST or TX TEST screen overrides any changes made to this field in other screens SNR Operation Selecting SNR turns off the other audio measurements The RF Generator and AFGen1 must be set up to provide the radio s carrier AFGen1 is automatically turned on and off repeatedly during this measurement ...

Page 479: ...hat signal Manual requires the operator to set the tune frequency for the RF signal to be analyzed Operating Considerations Changing the Tune Mode also changes the RF frequency display Automatic tuning enables the TX Frequency measurement Manual tuning enables the TX Freq Error measurement After autotuning to the desired signal select Manual to prevent the Tune Freq from changing when the signal i...

Page 480: ...nal of 1 or 2 Watts If the overpower circuit is triggered signified by a warning message at the top of the screen remove the signal from the ANT IN port and press MEAS RESET or turn the Test Set off and on to reset it See Also Input Port field description on page 476 Operating Considerations TX Power field description this page TX Pwr Zero field description on page 480 TX Pwr Zero The transmitter ...

Page 481: ... RF Analyzer Screen Field Descriptions When alternately making high and low power measurements always zero the power meter immediately before making the low power measurements to provide the best measurement accuracy ...

Page 482: ...482 S HP892XX USRGUIDE manual rfanscrn fb Chapter 17 RF Analyzer Screen Field Descriptions ...

Page 483: ...483 18 RF Generator Screen ...

Page 484: ...ck Diagram Figure 122 RF GENERATOR Functional Block Diagram WWHQ ROG 0 0 5 HQ UHT 0 G P 2Q 2II 5 2XW XSO 2XWSXW 3RUW 5 2XW XSOH 2XW 0 HUR N N 0 0 9SN 2II HQ UHT HQ 7R HQ UHT HQ 7R N 0 2II 0 RXSOLQJ 0 0RGXODWLRQ QSXW 5HDU 3DQHO 0LF 3UH PS X6 XWR ROG 2Q 2II PSOLWXGH 0RG Q 7R XGLR 2XW XGLR 2XW ...

Page 485: ...voltage or audio power Watts or dBm Operating Considerations When the unit of measure is changed to measure AF power the external load resistance must be specified Refer to theExt Load R field description on page 498 The input for the ac level measurement on this screen is always the AUDIO IN connectors See Also Entering and Changing Numbers on page 63 rfgscrn wmf ...

Page 486: ...e The field s name changes to AFGen2 when this type of operation is used This field is removed from this screen when NMT encoding or decoding is used NMT programs can only be run from the NMT Decoder screen See Also Chapter 10 Signaling Encoder AF Generator 2 AFGen1 To This Audio Frequency Generator control is used to set two values The upper field determines whether the AF signal modulates the RF...

Page 487: ...rms or peak This is done in the Sine Units field for the Function Generator When non sinewave waveforms are used or if the upper field is set to AM or FM the level is always expressed as a peak value See Also Function Generator Encoder on page 393 Amplitude RF Generator amplitude adjusts the amplitude of the RF Generator Operating Considerations This is a priority control field Accessing the RX TE...

Page 488: ...hese fields provide two functions The upper field specifies ac or dc coupling between the MODULATION INPUT con nector and the RF Generator s FM modulator This field also alters the FM modulator to allow DCFM from internal and external modulation sources Selecting the lower field causes the instrument to offset any dc bias that may exist when dc coupling is selected Mic Pre Emp Microphone pre empha...

Page 489: ... In addition the peak deviation produced by MIC signals will be approximately 1 kHz Output Port Output port selects the desired RF Generator output port Operating Considerations Maximum signal levels at each port are printed on the front panel CAUTION Applying reverse RF power to the DUPLEX OUT connector can damage the instrument A message is displayed when an overpower conditions occurs Whenever ...

Page 490: ...EST or TX TEST screen overrides any changes made to this field in other screens SNR Operation Selecting SNR turns off the other audio measurement The RF Generator and AFGen1 must be set up to provide the radio s carrier AFGen1 is automatically turned on and off repeatedly during this measurement AFGen2 must be turned off The radio s receiver s audio output must be connected to the AUDIO IN port se...

Page 491: ... place of digits for this measurement Use the Spectrum Analyzer2 to measure low level RF power 200 mW at the ANT IN port 1 The Input Port field is accessed on the TX TEST DUPLEX TEST and RF ANALYZER screens 2 Spectrum Analyzer is optional on some Test Set models CAUTION Connecting a signal of 200 mW to the ANT IN port can cause instrument damage although internal protection circuits can typically ...

Page 492: ...492 S HP892XX USRGUIDE manual rfgscrn fb Chapter 18 RF Generator Screen Field Descriptions ...

Page 493: ...493 19 RX Test Screen ...

Page 494: ...ram Figure 124 The RX Test Fields and Their Functions WWHQ ROG 0 0 5 HQ UHT 0 G P 2Q 2II 5 2XW XSO 2XWSXW 3RUW 5 2XW XSOH 2XW PSOLWXGH HQ UHT HQ 7R HQ UHT HQ 7R 0 0 N N 0 2II 0 3 N 3 LOWHU LOWHU XGLR 2XW 8 2 1 W RDG 5 8 2 1 2 6 1 0HDVXUHPHQWV LVSOD UHD N 6 1 UHT LVWQ UHT HYHO XUUHQW HYHO 615 ...

Page 495: ...criptions Field Descriptions Figure 125 The RX Test Screen NOTE Since most of the measurements displayed are dependent on different field settings the settings and values shown in the diagrams use the Test Set s preset conditions rxscrn wmf ...

Page 496: ... Generator control sets the frequency for the first audio frequency sinewave generator AFGen2 Freq This Audio Frequency Generator control sets the frequency for the second audio frequency sinewave generator It can also be used to set the Function Generator s frequency when the signaling encoder is used This field is also used to control the send stop functions for some encoder modes For example wh...

Page 497: ... any changes made to this field in other screens See Also Interaction Between Screens on page 54 AFGen2 To This Audio Frequency Generator control is used to set two values The upper field determines whether the AF signal modulates the RF Generator or is output through the AUDIO OUT connector The lower field sets the amplitude including Off The AUDIO OUT level is always in volts rms for standard si...

Page 498: ... prevents the fixed RF output attenuators from switching in and out eliminating the brief loss of the output signal as the level is changed This function is helpful when making squelch measurements Operating Considerations When this function is set to On the RF output level is restricted to a range of 15 dB around the present Amplitude setting Attempting to set an amplitude outside the allowed ran...

Page 499: ...each port are printed on the front panel CAUTION Applying reverse RF power to the DUPLEX OUT connector can damage the instrument A message is displayed when an over power conditions occurs Whenever possible when testing transceivers use the RF IN OUT connector to prevent damage from accidental transmitter keying CAUTION If a reverse power condition triggers the internal protection circuit remove t...

Page 500: ...ontrol field Accessing the RX TEST or TX TEST screen overrides any changes made to this field in other screens SNR Operation Selecting SNR turns off the other audio measurement The RF Generator and AFGen1 must be set up to provide the radio s carrier AFGen1 is automatically turned on and off repeatedly during this measurement AFGen2 must be turned off The radio s receiver s audio output must be co...

Page 501: ...s not currently supported outside of the factory This screen allows you to monitor individual circuit node measurements and change various MUX and DAC latch settings for isolating faulty modules To access the SERVICE screen you must first access the CONFIGURE screen then select Service from the To Screen menu in the bottom right corner ...

Page 502: ...plays the frequency measurement for the circuit node shown in the Counter Connection field Gate Time This field is used to adjust the frequency counter s gate time A shorter gate time may enable you to see frequency fluctuations that might not be seen using a longer gate time Latch This field is used to alter the circuit latches that control a variety of operations The value of the selected latch ...

Page 503: ... or more instrument setups using the SAVE function using this function will permanently remove them Value This field displays and changes the value for the latch shown in the Latch field Voltage This measurement field displays the voltage measurement for the circuit node shown in the Voltmeter Connection field Voltmeter Connection This field selects the desired circuit node for voltage measurement...

Page 504: ...504 S HP892XX USRGUIDE manual servscrn fb Chapter 20 Service Screen Field Descriptions ...

Page 505: ...controls are arranged in four menus The menus are accessed using the Controls field The field descriptions are grouped by menu names Assigning global USER keys to the most used functions on the menus allows you to access the functions without having to change menus ...

Page 506: ...IDE manual specscrn fb Chapter 21 Spectrum Analyzer Screen Field Descriptions Field Descriptions NOTE The Spectrum Analyzer is optional on some Test Set models Figure 126 The Spectrum Analyzer Screen and Menus sascrn wmf ...

Page 507: ...is field also changes the frequency of the Tracking Generator s and the RF Analyzer s center frequency Ref Level Reference level sets the amplitude reference level for the top line of the display All signals displayed are referenced to this line Operating Considerations The unit of measure for the reference can be changed as needed For instance 0 dBm 0 224 V 107 0 dB mV and 0 00100 W can all be us...

Page 508: ...he field set to High can result in uncalibrated operation a message appears on the screen when this happens The purpose for the high sensitivity setting is to allow you to look and listen to very low level signals when absolute accuracy is not essential See Also Sensitivity field description on page 517 Span Sets the span of frequencies to be displayed on the screen Operating Considerations When t...

Page 509: ...amplitude of the RF Generator Operating Considerations This is a priority control field Accessing the RX TEST screen overrides the Amplitude setting on this screen If a microphone is connected and the amplitude is off keying the microphone causes the amplitude to turn on to its previous level until the microphone is no longer keyed See Also Interaction Between Screens on page 54 sascrn3 wmf ...

Page 510: ...e RF power to the DUPLEX OUT connector can damage the instrument A message is displayed when an overpower conditions occurs Whenever possible when testing transceivers use the RF IN OUT connector to prevent damage from accidental transmitter keying If a reverse power condition triggers the internal protection circuit remove the reverse power signal and press the MEAS RESET key or turn the Test Set...

Page 511: ...requencies An RF offset can be set between the Tracking Generator and the center frequency of the Spectrum Analyzer This allows you to look at a signal that is related to a source whose frequency is outside of the displayed span Amplitude This field sets the amplitude of the Tracking Generator Operating Considerations This field operates independently of the RF Generator s amplitude settings in ot...

Page 512: ... the output port of the Tracking Generator The lower field specifies whether the Tracking Generator sweeps from low to high fre quencies Norm or from high to low frequencies Invert The Spectrum Analyzer always sweeps from low to high frequencies The swept frequency range is determined by the Span setting in the Spectrum Analyzer s Main Menu Operating Considerations When using the Tracking Generato...

Page 513: ...e location in the Position field Next Peak moves the marker to the next peak to the right and enters the location in the Position field Center Freq changes the center frequency value to match the current position of the marker Ref Level changes the reference level setting to match the current position of the marker Position This field sets the marker position referenced to the left side of the scr...

Page 514: ...the Spectrum Analyzer s Markers Marker Freq Marker frequency displays the frequency at the marker s present position Marker Lvl Marker level displays the amplitude at the marker s present position Operating Considerations The marker s level can be displayed in various units of measure See Also To Change the Measurement s Unit of Measure on page 61 sascrn1 wmf ...

Page 515: ...u want to set the value Hold The lower field displays the present attenuation value and is used to set the desired at tenuation level when the upper area is set to Hold Operating Considerations Maximum signal levels at each port are printed on the front panel Setting the upper field to Hold prevents the RF autoranging process from interrupting Spectrum Analyzer operation when a signal is first mea...

Page 516: ...e trace saved using Save B and the currently displayed trace The comparison can yield either losses or gains in amplitude Operating Considerations The A B function works correctly only if the center frequency and span settings are the same for both signals The reference level Ref Level can be changed to move the trace below the top line of the display if the A B function results in a gain The the ...

Page 517: ... software No Pk Avg means that peak hold and video averaging are off Pk Hold means that peak hold is on Avg n enables video averaging over n measurements where n 1 2 3 4 5 10 20 50 or 100 Off means that peak hold and video averaging are off Operating Considerations After capturing the desired signal you can use the HOLD function press and release the SHIFT key then the PREV key to prevent addition...

Page 518: ...rruption of the displayed information during the process Setting Resolution Bandwidth and Sweep Rate The resolution bandwidth and sweep rate are determined by the span setting and cannot be set independently These settings are listed in the following table Table 14 Relationship Between Span Resolution Bandwidth and Sweep Rate Span Resolution BW kHz Sweep Rate 50 kHz 0 3 28 6 kHz second 200 kHz 1 0...

Page 519: ...519 22 Tests Screen ...

Page 520: ... itself and control other instruments using the HP IB or Serial Port1 The HP 11807A Radio Test Software is an example this type of automated testing Tests can be run from memory cards the Test Set s internal ROM or RAM or from an external disk drive Test programs are written in the HP Instrument BASIC IBASIC programming language For detailed step by step instructions about using the TESTS screens ...

Page 521: ... test point If a limit is violated during a test an F appears next to the test value to indicate a failure Save Delete Procedure is used to save and delete test procedures Execution Conditions is used to control which test results are output and where the results are printed CRT printer This screen also controls whether tests run contin uously or singly and whether the test continues or stops afte...

Page 522: ...fg External Devices Selecting this field displays the TESTS External Devices screen Continue This field is used to restart a paused test Description This field displays a description of the file chosen in the Select Procedure Filename field Exec Execution Cond Selecting this field displays the TESTS Execution Conditions screen tstmain wmf ...

Page 523: ...IC Cntrl Selecting this field displays the TESTS IBASIC Controller screen Library This field displays the library information of the file chosen in the Select Procedure Filename field Parm Test Parameters Selecting this field displays the TESTS Test Parameters screen Print Printer Setup Selecting this field displays the TESTS Printer Setup screen ...

Page 524: ... and runs the test chosen in the Select Procedure Filename field Select Procedure Filename This field is used to select the file you want to load from the location chosen in the Select Procedure Location field Select Procedure Location This field is used the select the location of the procedure to load Procedures can be loaded from disk card ROM or RAM Seqn Order of Tests Selecting this field disp...

Page 525: ...525 Chapter 22 Tests Screen TESTS Channel Information TESTS Channel Information Figure 134 The TESTS Channel Information Screen This screen displays the channel frequencies to be tested tstcinfo wmf ...

Page 526: ...example if your radio uses a CTCSS tone of 91 5 Hz you could enter the tone frequency in both RX and TX channel information fields as CT FR91 5 or you could enter the tone code itself as CT ZZ The specific entries are described in your HP 11807A software manual When testing cellular radios the Channel Information is the channel number you are testing don t confuse this with the Chan field used to ...

Page 527: ...power power supply voltage and so forth By selecting the Parm Value or Units fields and using the data and units keys you can modify or enter parameters NOTE The tests you select determine the parameters that are required Your radio test documentation provides details if you are using HP 11807 software Print All This field allows you to print the Test Set s screen image Main Menu Selecting this fi...

Page 528: ...d the order in which the tests are done Tests can be selected in any order but to reduce testing time you should strategically organize the test sequence Tests requiring operator intervention changing volume channels and so forth should be grouped together If you are using HP 11807 software see its documentation to see which parameters go with each test All Chans This field allows you to choose if...

Page 529: ...nserted This duplicate is overwritten when the new test is selected See Also Programmer s Guide Main Menu Selecting this field returns you to the TESTS Main Menu screen Print All This field allows you to print the Test Set s screen image Step The Step field lists the order of selected tests for the current procedure Operating Considerations Use the knob up arrow or down arrow key to select the ste...

Page 530: ...s Subsystem For a radio to pass a test the measured value must fall within the test s limits Tests results can be compared to only the lower limit only the upper limit both the upper and lower limits or no limits None Pass Fail limits are sometimes referred to as specifications NOTE The tests you select determine the specifications that are required The HP 11807 documentation provides details if y...

Page 531: ... the measured results If the measured result is below this limit the test will fail Main Menu Selecting this field returns you to the TESTS Main Menu screen Print All This field allows you to print the Test Set s screen image Spec The Spec field lists the order of selected pass fail limits for the current procedure Units The Units column indicates the unit of measure used for the limits dBm kHz an...

Page 532: ...e Procedure Figure 138 The TESTS Save Delete Procedure Screen After selecting a test sequence and defining the appropriate specifications parameters frequencies and system configuration you can save all that information as a procedure file for later use This screen is also used to delete procedures tstsvdel wmf ...

Page 533: ...nitialized before a file can be saved Refer to the Programmer s Guide Main Menu Selecting this field returns you to the TESTS Main Menu screen Pass Word The Pass Word field allows you to access a secured test procedure file Test procedures are secured using the SECURE_IT program in ROM On the HP 8920A this program is directly accessed from the ROM list of choices See Also Securing a Test Procedure...

Page 534: ... Operating Considerations Procedure files contain a subset of the library file This is where you save all of your own frequency parameter test sequence specification and system configuration information A procedure file is not a directly executable file for HP 11807 tests it requires the code and library files to be present before running To save a file to an external disk drive you must enter the...

Page 535: ...Chapter 22 Tests Screen TESTS Execution Conditions TESTS Execution Conditions Figure 139 The TESTS Execution Conditions Screen The TESTS Execution Conditions screen determines how tests are run tstexec wmf ...

Page 536: ...ined entry is the active choice Continue continues with testing even though a test in the test sequence fails to meet its test specification limits When this occurs an error is listed on the test results print out is displayed on the CRT or both Stop stops the test when a failure occurs and requires operator intervention before test ing proceeds Main Menu Selecting this field returns you to the TE...

Page 537: ...the TESTS Main Menu screen Test Procedure Run Mode This field selects how the test will be run The underlined entry is the active choice Continuous runs the tests in the test sequence one after another without stopping Testing pauses only if the operator is required to interact with the UUT or Test Set In teractions such as changing UUT channels and setting squelch and audio levels cause testing t...

Page 538: ...creen The Tests Subsystem can only access external devices if they have been configured Most external devices use the HP IB port for control A serial printer can be connected to the serial port for printing test results NOTE HP IB Mode The Mode field on the I O CONFIGURE screen must be set to Control to access connected HP IB instruments tstextdv wmf ...

Page 539: ...e bottom of the screen Use the knob up arrow or down arrow key to select the step where you want to delete an instrument External Disk Specification This field is used when storing and loading procedures on an external disk Operating Considerations The HP IB path entered in the External Disk Specification field is used by the Select Procedure Location field on the TESTS Main Menu screen when Disk ...

Page 540: ...ield is used to enter the instrument s option number or numbers if any Operating Considerations This field may be left blank or otherwise may include other calling name options for example Printer options LN START END Where is the number of lines on each page Where START causes a form feed at the start of each printout Where END causes a form feed at the end of each printout Data collection option...

Page 541: ...s used to restart a paused test FF at End This field can only be controlled programmatically It is used to specify if you want a form feed at the end of printing The underlined entry is the active choice FF at Start This field can only be controlled programmatically It is used to specify if you want a form feed at the start of printing The underlined entry is the active choice tstprint wmf ...

Page 542: ...f those that is listed Output Heading This field allows you to enter a heading for the test results printout or CRT display Output Results To This field selects where test results are output The underlined entry is the active choice Crt displays test results on the Test Set s CRT Printer displays test results on the Test Set s CRT and outputs them to a printer Output Results For This field selects...

Page 543: ...ess of an HP IB printer This field is only displayed if the Printer Port field is set to HP IB Printer Port This field is used to select the port your printer is connected to Run Test Selecting this field loads and runs the test chosen in the Select Procedure Filename field on the TESTS Main Menu screen ...

Page 544: ...SIC computer See the Instrument BASIC documentation for information about writing your own tests for the Test Set If you need to perform a simple IBASIC operation such as a SAVE or GET function you can enter commands one at a time To do this access the TESTS IBASIC Controller screen and use the knob to enter commands Refer to the Programmer s Guide for information about using the TESTS IBASIC Cont...

Page 545: ...e IBASIC controller screen Continue This field is used to restart a paused test Main Menu Selecting this field returns you to the TESTS Main Menu screen Run Selecting this field runs the IBASIC program Sngl Step This field single step allows you to step through an IBASIC program line by line ...

Page 546: ...g the LVL_MTR ROM program 1 Select the TESTS Main Menu screen 2 Move the cursor to the Select Procedure Location field and choose ROM 3 Move the cursor to the Select Procedure Filename field and select LVL_MTR 4 Press the k3 key and enter the tune frequency in MHz then press the ENTER key Do not press a units MHz kHz Hz key MHz is the default unit and cannot be changed The ANT IN port is always th...

Page 547: ...nd follow directions to secure the desired informa tion Clearing RAM RAM can be cleared using the RAM_MNG program in the Test Set s ROM This program clears all RAM including any SAVE RECALL registers saved to Internal see the Save Recall field description on page 441 in the I O CONFIGURE screen description This program is accessed by running the IB_UTIL program This program is accessed by directly...

Page 548: ...548 S HP892XX USRGUIDE manual testscrn fb Chapter 22 Tests Screen ROM Programs ...

Page 549: ...549 23 TX Test Screen ...

Page 550: ...LR QW W 0RG 0LF 0RG 0 0RG 0 0RG XGLR 2XW URP 8 2 1 URP 5DGLR QWHUIDFH 5HDU 3DQHO 0RG 1 URP 0 URP 0 0 0RGXODWRUV URP 8 2 2XW H PSKDVLV XV 2II 2 LOWHU LOWHU QO Q QO Q 7XQH 0RGH 0HDVXUHPHQWV LVSOD UHD 0 XWR 0DQXDO 3 3 XWR 0DQXDO 5 2 5 67 6 67 6 5 Q QW LOWHU N XV HWHFWRU 506 506 6457 5 3 3 3N 0D XWR 0DQXDO 9ROWPHWHU 0 HPRG 3N 0D 3N ROG 3N ROG 3N G 3N 0 G 0 UHT 21 2II HQ UHT 8 2 287 W 7 H 0 HQ YO 7 UHT...

Page 551: ...551 Chapter 23 TX Test Screen Field Descriptions Field Descriptions Figure 145 The TX Test Screen txscrn wmf ...

Page 552: ... FM or SSB demodulators The AUDIO IN RADIO INTERFACE MODULATION INPUT MIC ACC and AUDIO OUT connectors The signal present at the AM or FM modulators for the RF Generator Operating Considerations Changing this field alters the upper AF measurement to the appropriate measurement type This is a priority control field Accessing the RX TEST or TX TEST screen overrides any changes made to this field in ...

Page 553: ...y control field Accessing the RX TEST or TX TEST screen overrides any changes made to this field in other screens SNR Operation Selecting SNR turns off the other audio measurement The RF Generator and AFGen1 must be set up to provide the radio s carrier AFGen1 is automatically turned on and off repeatedly during this measurement AFGen2 must be turned off The radio s receiver s audio output must be...

Page 554: ...T connector Current The Current field is found by selecting the SINAD field on the Test Set display of the TX TEST screen This field only displays the DC current measured at the DC input port on the back of the Test Set Any offset can be removed by selecting Zero from the DC Current field DC Level This field displays the DC voltage entering at the DC input port on the back of the Test Set De Empha...

Page 555: ...erent detector or reselect the same detector Pk Hold displays and holds the negative peak value until the measurement is reset To reset press the MEAS RESET key select a different detector or reselect the same detector Pk 2 Hold divides the sum of the positive and negative peak values by 2 and displays the value until the measurement is reset To reset press the MEAS RESET key select a different de...

Page 556: ...ure 146 on page 570 Filter 1 and Filter 2 Filters 1 and 2 select a variety of standard and optional filters Selecting either field lists the choices available for that field See Also Chapter 5 AF Analyzer Screen FM Deviation This is the default measurement for this field The type of measurement listed here is dependent on the AF Anl In settings See Also AF Anl In field description on page 552 Disp...

Page 557: ...ow level RF power at the antenna port can be measured using the Spectrum Analyzer1 1 Spectrum Analyzer is optional on some Test Set models CAUTION Connecting a signal of 200 mW to the ANT IN port can cause instrument damage If the overpower circuit is triggered signified by a warning message at the top of the screen remove the signal from the ANT IN port and press the MEAS RESET key or turn the Te...

Page 558: ...nalyzer If the Tune Mode is set to Manual the operator must enter the desired frequency See Also Tune Mode field description this page Tune Mode This field selects automatic or manual tuning of the RF Analyzer Auto causes the RF Analyzer to find the signal with the greatest amplitude 36 dBm and set the tune frequency for that signal Manual requires the operator to set the tune frequency for the RF...

Page 559: ...surement Use the Spectrum Analyzer1 to measure low level RF power 200 mW at the ANT IN port 1 Spectrum Analyzer is an option on some Test Set models CAUTION Connecting a signal of 200 mW to the ANT IN port can cause instrument damage although internal protection circuits can typically withstand a short duration signal of 1 or 2 Watts If the overpower circuit is triggered signified by a warning mes...

Page 560: ...f to prevent internal cross coupling into the power detector while zeroing Operating Considerations When power is applied to the RF IN OUT connector the temperature of the internal circuitry increases This can cause changes in the TX Power measurement when low power levels are measured immediately following high power measurements When alternately making high and low power measurements always zero...

Page 561: ...561 24 Connector Key and Knob Descriptions ...

Page 562: ...ment damage although internal protection circuits can typically withstand a short duration signal of 1 or 2 Watts If the overpower circuit is triggered signified by a warning message at the top of the screen remove the signal from the ANT IN port and press MEAS RESET or turn the Test Set off and on to reset it Operating Considerations Input impedance 50Ω TX Power cannot be measured using this port...

Page 563: ...en the HI and LO center pins The shells of both connectors are at chassis ground Operating Considerations Input impedance is switchable between 1 MΩ in parallel with 95pF or 600Ω floating This port is selected as the AF Analyzer s input using the AF Anl In field in the TX TEST screen DUPLEX TEST screen AF ANALYZER screen and various encoder modes This port is always the AF Analyzer s input when th...

Page 564: ...y the front panel VOLUME knob Output impedance 1 kΩ See Also Chapter 5 AF Analyzer Screen AUDIO OUT This port is used to output signals from AF Generators 1 and 2 including the encoder functions Operating Considerations The output level is set by the AF Generators and is not affected by the front panel VOLUME control Output impedance 1Ω Maximum output current 20 mA peak Maximum reverse voltage 12 ...

Page 565: ...s type of monitor include Mitsubishi Diamond Scan NEC 3D Leading Edge CMC 141M and Sony CPD 1302 DC CURRENT MEASUREMENT This connector is optional on the HP 8920A These connectors are used in series with a DC supply and load to provide a 0 to 10 amp DC current meter Operating Considerations The dc current meter is designed to measure positive current the connector s polarity is marked on the rear ...

Page 566: ... DET OUT IQ RF IN 114 3 MHz OUT The following connectors are only used when an HP cellular adapter such as an HP 83203B is connected to the Test Set to perform digital modulation tests These connectors are optional 1 Control I O provides control of the cellular adapter 2 CW RF OUT routes the RF carrier to the cellular adapter If a cellular adapter is not present a jumper must be used to connect th...

Page 567: ... ANALYZER screens CAUTION Connecting an RF source of 200 mW to this connector can permanently damage the instrument EXT SCOPE TRIGGER INPUT This connector provides an external oscilloscope trigger Operating Considerations Input threshold approximately 2 5 V Maximum Input level approximately 20 V peak Input impedance is 100 kΩ for signals 5 6 V peak 5 kΩ for signals 5 6 V peak When measured with no...

Page 568: ...when the KEY IN line is grounded This signal is summed with the external MODULATION INPUT signal The Mod In To field of the RF GENERATOR screen sets the type of modulation AM or FM and sen sitivity AM Vpk or kHz Vpk for this connection Key In provides control of the RF Generator s output state on or off and automatic switching between the TX TEST and RX TEST screens if the CONFIGURE screen s RX TX...

Page 569: ...Connect the selected output port to your receiver or antenna 7 Using the Mod In To field select the type of modulation FM Vpk enter the modulation sensitivity to a 1 Vpeak signal usually 1 kHz for microphone use See Mod In To on page 489 8 Key the microphone to transmit MIC ACC Operating Considerations Mic In specifications Input impedance 100 kΩ Maximum input level 10 V peak Full scale input 10 m...

Page 570: ...nual connkeys fb Chapter 24 Connector Key and Knob Descriptions Connector Descriptions Figure 146 MIC ACC Connections See Also Chapter 18 RF Generator Screen Chapter 7 Configure Screen Chapter 17 RF Analyzer Screen mic con wmf ...

Page 571: ...summed with the microphone MIC IN signal from the MIC ACC connector The FM Coupling field in the RF GENERATOR DUPLEX TEST and various encoder modes selects ac or dc coupling of this signal for FM operation Parallel Port This port is optional on the HP 8920A This port is used with printers requiring a parallel interface when printing screen images or test results Set the Printer Port field on the P...

Page 572: ...8 Data 7 9 Data 8 Most Significant Bit 10 nAck 11 Busy 12 PError 13 Select 14 nAutoFd 15 nFault 16 nInit 17 nSelectIn 18 Signal Ground nStrobe 19 Signal Ground Data 1 and Data 2 20 Signal Ground Data 3 and Data 4 21 Signal Ground Data 5 and Data 6 22 Signal Ground Data 7 and Data 8 23 Signal Ground Busy and nFault 24 Signal Ground PError Select and nAck 25 Signal Ground nAutoFd nSelectIn and nInit...

Page 573: ...ly available if the Radio Interface option is installed The audio signal from this connector is input by setting the AF Anl In field to Radio Int The AF Anl In field is available in the TX TEST DUPLEX TEST and AF ANALYZER screens as well as various DECODER screens Radio Interface Operating Considerations Connector type D Subminiature 37 pin All pins have 4 6 µH chokes in series for RFI suppression...

Page 574: ...y relay contact Key Out 1 and Key Out 2 are connected in parallel with the Key Out 1 and Key Out 2 pins of the front panel MIC ACC connector They go to internal relay contacts and can be used to key a transmitter The relay contacts are closed which connects the two pins when the Ext TX Key field is set to On This field can be found on the TX TEST DUPLEX TEST or RF ANALYZER screen See MIC ACC on pa...

Page 575: ... edge The strobe can be set to go high or low with the Strobe Pol field on the RADIO INTERFACE screen The output level and current sink capability is the same as the parallel data pins Strobe pulse width is 5 µs typical Logic Sense is programmable high or low 12 Interrupt Input 1 The interrupt lines can be used together or independently The lines must be armed for the Test Set to sense an interrup...

Page 576: ... low according to the data to be read back 16 No Connection See Also Chapter 16 Radio Interface Screen RF IN OUT This Type N connection is used to output signals from the RF Generator and to input RF signals CAUTION Overpower Damage Refer to the Test Set s front panel for maximum input power level Exceeding this level can cause permanent instrument damage If the RF power at the RF IN OUT port exce...

Page 577: ... the Programmer s Guide Unless you are writing IBASIC programs that require serial printing and other serial data transfer at the same time we recommend that you only use the primary port A The IBASIC Controller sends and receives data to the serial ports using address 9 for the primary port and 10 for Port B For example to enter data from the primary serial port into a program variable named SDAT...

Page 578: ...ns for the primary serial port address 9 When using both ports at the same time you need to locate or fabricate an adapter to provide the necessary connections Test Set RJ 11 Serial Port Terminal PC 25 Pin RS 232 Terminal PC 9 Pin RS 232 Pin 2 RX to pin 2 TX or pin 3 TX Pin 5 TX to pin 3 RX or pin 2 RX Pin 4 GND to pin 7 GND or pin 5 GND rj11 wmf ...

Page 579: ...r RF Analyzer Tune Frequency Spectrum Analyzer Center Frequency AF Generators 1 and 2 and the decoder s frequency counter are not affected using an external reference they use their own reference NOTE The reference output frequency is always 10 MHz independent of the selected input reference frequency Electrostatic discharges to the 10 MHz REF INPUT port of 0 5 kV or above may cause degradation of...

Page 580: ...it of mea sure is not specified This function is identical to pressing the cursor control knob ON OFF is used to enable and disable measurements and to turn numeric fields such as Amplitude on and off YES and NO are used to confirm selected operations before they are executed EEX SHIFT is used for entering numbers using scientific notation The remaining keys in this area are for entering and chang...

Page 581: ...tring entry fields such as the Print Title field on the PRINT CONFIGURE screen LO LIMIT SHIFT down arrow key and HI LIMIT SHIFT up arrow key and set measurement end points Exceeding the end points causes screen prompts to blink until they are reset REF SET SHIFT INCR 10 is used to enter or remove a measurement reference for relative AF and RF measurements METER SHIFT INCR SET enables or disables t...

Page 582: ... states although most CONFIGURE screen changes are not affected Instrument self diagnostics are not run at this time ADRS SHIFT LOCAL displays the HP IB address of the Test Set SAVE SHIFT RECALL stores instrument setups See Also Saving and Recalling Instrument Setups on page 76 SCREEN CONTROL Keys RX TX DUPLEX TESTS MSSG HELP and CONFIG access several instru ment control and information screens PR...

Page 583: ...w key backspace is used to move the cursor to the left when entering num bers in a field such as RF Gen Freq Each press of this key moves the cursor one place to the left erasing the previous character The rear panel AC DC button setting selects the instrument s power source The power source must be changed with the Test Set turned off POWER turns the instrument power on and off Several CONFIGURE ...

Page 584: ...choices 3 Changing numeric field values VOLUME controls the speaker volume for monitoring the AF Analyzer s selected in put The volume is also affected by the Speaker Vol and Speaker ALC fields in the AF ANALYZER screen SQUELCH adjusts the squelch level when demodulating AM FM or SSB signals The squelch level is affected by the Squelch field in the RF ANALYZER screen See Also Chapter 17 RF Analyze...

Page 585: ...585 25 Modifications Accessories Manuals Support ...

Page 586: ... contact the nearest regional sales office listed at the end of this chapter Some options may not be available depending on which model number you have One or more options may already be installed in your instrument For more specific information see table 14 on the following page Table 15 Hardware Retrofits and Modifications Description HP 8920A Option 001 High Stability Timebase R01 Option 004 To...

Page 587: ...d residual FM performance f Retrofit kit can only be installed in instruments with serial prefix 3248A and above g Retrofit kit does not include firmware 1 2 10 dB resolution requires firmware revi sion A 06 01 or later ACP Adjacent Channel Power measurement capability requires revision A 12 01 or later Option 014d 6 kHz Bandpass Filter R14 Option 019 Variable Frequency Notch Filter 300 Hz 10 kHz ...

Page 588: ...al accessor fb Chapter 25 Modifications Accessories Manuals Support Modifications Firmware Upgrades a Option 004 Tone Digital Signaling Table 16 Firmware Upgrades Description HP 8920A Operating System and Signalinga ROMs R40 R98 ...

Page 589: ...8920 61061 DC Power Connector Housing Qty 1 1251 4782 DC Power Connector Contacts Qty 2 1252 0385 System Rack Mount Flange Kit Option 908 5061 4846 Rack mount kita for HP 8920D or HP 8921D 08921 61037 Padded Carrying Case 1540 1130 Hardshell Transit Case 08920 90033 Passive Oscilloscope Probe 1 MΩ 7 5pF 10 1 HP 10435A Passive Oscilloscope Probe High Z 40pF 1 1 HP 10438A Passive Oscilloscope Probe ...

Page 590: ...0A b SRAM Static Random Access Memory c OTP One Time Programmable PROM 32 KByte SRAMb Memory Card HP 85700A 128 KByte SRAM Memory Card HP 85702A 256 KByte SRAM Memory Card HP 85704A 512 KByte SRAM Memory Card HP 85705A 128 KByte OTPc Memory Card HP 85701A 256 KByte OTP Memory Card HP 85703A 512 KByte OTP Memory Card HP 85706A Table 17 Accessories Continued Description HP 8920A ...

Page 591: ...s Support Accessories External Monitor The CRT s Video Output drives a multisync monitor at 19 2 kHz analog Examples of this type of monitor include the Electrohome ECM 1410 DMS 14 inch color monitor and the EVM 1242 P4VID 12 inch monochrome monitor ...

Page 592: ...08920 90191 Programmer s Guide Japanese ABJ 08920 90192 Quick Reference Manual Spanish ABE 08920 90017 User s Guide Spanish ABE 08920 90097 Quick Reference Manual French ABF 08920 90018 Quick Reference Manual German ABD 08920 90019 Quick Reference Manual Italian ABZ 08920 90020 User s Guide Italian ABZ 08920 90123 Quick Reference Manual Traditional Chinese for Taiwan Chinese AB0 08920 90021 User s...

Page 593: ...side instrument impact cover b Each non English Quick Reference Manual includes a Quick Reference Card and a Quick Start Label Applications Handbook Korean AB1 08920 90145 Quick Reference Manual Finnish ABX 08920 90039 Table 18 Manuals Continued Description Language Option HP 8920A ...

Page 594: ...s Option 004 Tone Digital Signaling b Requires an HP 83201A Dual Mode Cellular Adapter c Requires options 1013 004 005 013 050 and the HP 89201A to perform the TDMA tests Table 19 HP 11807A Software for the HP 8920A Option 001 North American FM Tests Option 002 European PM Tests Option 003 AM Tests Option 004 AMPS EAMPS NAMPS Cellular Tests a Option 005 TACS ETACS Cellular Testsa Option 006 NMT Ce...

Page 595: ... Djibouti East Germany Egypt Estonia Ethiopia Finland France French Guiana French Indian Ocean Areas Gabon Gaza Strip Georgia Germany Gozo Greece Hungary Iceland Indonesia Iran Iraq Israel Italy Ivory Coast Jordan Kazakhstan Korea Kyrgystan Latvia Lebanon Libya Lithuania Luxembourg Macedonia Madeira Islands Malagasy Republic Mali Malta Mauritania Miquelon Moldova Mongolia Morocco Mozambique Nepal ...

Page 596: ...s male female HP Part cable plug Cable Descriptions Straight Straight 8120 0698 90 inches black Used in the following locations Peru Plug Type Plug Descriptions male female HP Part cable plug Cable Descriptions Straight Straight Straight 90 8120 2104 8120 2296 79 inches gray 79 inches gray Used in the following locations Switzerland ...

Page 597: ...rican Samoa Bahamas Barbados Belize Bermuda Brazil Caicos Cambodia Canada Cayman Islands Columbia Costa Rica Cuba Dominican Republic Ecuador El Salvador French West Indies Guam Guatemala Guyana Haiti Honduras Jamaica Korea Laos Leeward and Windward Is Liberia Mexico Midway Islands Nicaragua Other Pacific Islands Panama Philippines Puerto Rico Saudi Arabia 115V 127V Surname Taiwan Tobago Trinidad T...

Page 598: ...s Straight Straight Straight 90 8120 4753 8120 4754 90 inches dark gray 90 inches dark gray Used in the following locations Japan Plug Type Plug Descriptions male female HP Part cable plug Cable Descriptions 90 Straight 90 90 Straight Straight 8120 2956 8120 2957 8120 3997 79 inches gray 79 inches gray 79 inches gray Used in the following locations Denmark Greenland JIS C 8303 100 V ...

Page 599: ...int gray Used in the following locations Botswana India Lesotho Malawi South West Africa Namibia Swaziland Zambia Zimbabwe Plug Type Plug Descriptions male female HP Part cable plug Cable Descriptions Straight Straight Straight Straight Straight 90 Straight 90 8120 1860 8120 1575 8120 2191 8120 4379 60 inches jade gray 30 inches jade gray 60 inches jade gray 15 5 inches jade gray Used in the follo...

Page 600: ...y 90 inches mint gray Used in the following locations Bahrain British Indian Ocean Territories Brunei Canton Cyprus Enderbury Island Equatorial Guinea Falkland Islands French Pacific Islands Gambia Ghana Gibraltar Guinea Hong Kong Ireland Kenya Kuwait Macao Malaysia Mauritius Nigeria Qatar Seychelles Sierra Leone Singapore Southern Asia Southern Pacific Islands St Helena Sudan Tanzania Uganda Unit...

Page 601: ...pe Plug Descriptions male female HP Part cable plug Cable Descriptions Straight Straight Straight 90 8120 1369 8120 0696 79 inches gray 80 inches gray Used in the following locations Argentina Australia China People s Republic New Zealand Papua New Guinea Uruguay Western Samoa ...

Page 602: ...ration Englewood Colorado 80112 Telephone 800 403 0801 Fax 888 857 8161 United States of America Customer Information Center Hewlett Packard Company Tel 800 752 0900 6 00 am to 5 00 pm Pacific Time Parts Direct 1 800 227 8164 United Kingdom Sales and Service Hewlett Packard Ltd Cain Road Amen Corner Bracknell Berkshire RG12 1HN United Kingdom Telephone 44 344 360000 Fax 44 344 363344 South Eastern...

Page 603: ...2 780 4111 Fax 41 22 780 4770 Australia New Zealand Sales and Service Hewlett Packard Ltd P O Box 221 31 41 Joseph Street Blackburn Victoria 3130 Telephone 61 3 895 2895 Fax 61 3 898 9257 Canada Sales and Service Hewlett Packard Canada Ltd 5150 Spectrum Way Mississauga Ontario L4W 5G1 Canada Telephone 416 206 4725 Fax 416 206 4739 Canada Service Center Hewlett Packard Company 17500 Transcanada Hig...

Page 604: ...604 S HP892XX USRGUIDE manual accessor fb Chapter 25 Modifications Accessories Manuals Support HP Support for Your Instrument ...

Page 605: ...605 Error Messages ...

Page 606: ...s Handbook HP 8920A or HP 8921A HP Instrument BASIC Users Handbook HP P N E2083 90601 HP 8920B HP Instrument BASIC Users Handbook Version 2 0 HP P N E2083 90005 The format of the displayed message determines which manual contains information about the error message There are four basic error message formats Positive numbered error messages IBASIC error messages HP IB error messages Text only error...

Page 607: ...ssages are generally associated with IBASIC Refer to the HP Instrument BASIC User s Handbook for information on IBASIC error messages Positive numbered error messages take the form ERROR XX For example Error 54 Duplicate file name or Error 80 in 632 Medium changed or not in drive ...

Page 608: ...ormation on SCPI order the following book A Beginner s Guide to SCPI Addison Wesley Publishing Company ISBN 0 201 56350 9 HP P N 5010 7166 or contact Fred Bode Executive Director SCPI Consortium 8380 Hercules Drive Suite P3 La Mesa CA 91942 Phone 619 697 8790 FAX 619 697 5955 CompuServe Number 76516 254 Negative numbered error messages take the form ERROR XX error message For example Error 128 Num...

Page 609: ...BASIC User s Handbook for information on positive numbered error messages Refer to the HP IB Error Messages section of the Programmer s Guide for information on negative numbered error messages the error message associated with a negative number is the same for HP IB errors and IBASIC errors IBASIC error messages take the form IBASIC Error XX For example IBASIC Error 286 Program runtime error ...

Page 610: ... HP IB Error Messages are associated with HP IB operation Refer to the Programmers Guide for information on HP IB error messages HP IB error messages take the form HP IB Error XX or HP IB Error For example HP IB Error 410 Query INTERRUPTED or HP IB Error Input value out of range ...

Page 611: ...only error messages can also be displayed while running the Test Set s built in diagnostic or calibration utility programs Refer to the Assembly Level Repair manual for information on text only error messages displayed while running the Test Set s built in diagnostic or calibration utility programs Text only error messages take the form This is an error message For example Input value out of range...

Page 612: ...ty occurs Other messages are only displayed when the error first occurs they are removed when a key is pressed or the knob is turned or when an HP IB command is received Many of the messages are displayed on the MESSAGE screen until the instrument is turned off Messages that are about error conditions may tell you what to do to correct the error turn something off reduce a field s value press a ce...

Page 613: ...ard through your local service center or by calling 800 827 3848 USA collect and asking to speak to the Service Engineer Address error exception at line number 0 To continue operation turn POWER off and back on Follow the instructions in the message Unfortunately you will not be able to recover from this condition You must switch the Test Set off and back on When you rerun the test where the Error...

Page 614: ...initial self diagnostics This message should always be displayed immediately after instrument turn on Input value out of range A number was entered that was too large or small for the selected field for example trying to set AFG1 Freq to 125 kHz Invalid keystroke You used a key that has no function relating to the selected field for example pressing the ON OFF key while the Filter 1 field is selec...

Page 615: ...trumAnalyzer LVL_MTR signal strength meter ROM Program A16 Receiver Assembly TDMA TEST HP 83201A B Cellular Adapter PDC TEST PHP TEST HP 83201B Cellular Adapter TDMA HP 83204 Cellular Adapter PCS HP 83236B Interface CDMA TEST HP 83203A B Cellular Adapters PRNT CNFG Printer Configure Option 103 Serial HP IB ParallelPorts RADIO INT Option 020 Radio Interface Port Encoder Decoder Option 004 Tone Digi...

Page 616: ...asurement interruption becomes too great and the Test Set stops interrupting the signal Following measurements may be influenced by transient signals Pressing MEAS RESET clears the data buffer used to generate interrupts resetting the normal squelch operation to eliminate transients This condition may occur when monitoring low level off the air signals Cal file checksum incorrect initializing file...

Page 617: ...rum Analyzer Make the indicated changes until this message is no longer displayed Change RF Gen Amplitude Output Port or Atten Hold if on This message appears when the RF Generator s Amplitude field is set too high when using the RF IN OUT port or when adjusting the amplitude with the Atten Hold field set to On The RF IN OUT port has a lower maximum output level than the DUPLEX OUT port Use the DU...

Page 618: ...618 S HP892XX USRGUIDE manual errormsg fb Error Messages ...

Page 619: ...of TX frequency error 137 meaning of TX power measurement 58 91 97 112 352 480 491 559 Symbols Gen Anl Configure screen 259 Numerics 10 MHz REF INPUT connector description 579 10 MHz REF OUTPUT connector description 579 114 3 MHz IF OUT connector description 566 24 hour clock setting 267 600 ohm impedance at AUDIO IN 103 Index ...

Page 620: ... screen NMT mode 421 add options 586 Addr Tests External Devices screen 539 address digital paging 376 HP IB external devices 539 HP IB printer 455 543 HP IB test set 439 582 key 582 pager 286 Address Qualifier Signaling Encoder screen MPT 1327 mode 404 adjacent channel power measurement 91 Adjacent Channel Power screen ACP Meas 91 AFGen1 Freq 92 AFGen1 To 92 Carrier Ref 92 Ch Offset 94 Channel BW...

Page 621: ... Encoder screen Func Gen mode 394 AFGen2 To RF Generator screen 487 RX Test screen 497 Signaling Encoder screen AMPS TACS mode 356 359 Signaling Encoder screen CDCSS mode 369 Signaling Encoder screen Digi Page mode 374 Signaling Encoder screen DTMF mode 379 Signaling Encoder screen EDACS mode 383 Signaling Encoder screen Func Gen mode 394 Signaling Encoder screen LTR mode 397 Signaling Encoder scr...

Page 622: ... 285 289 295 301 305 317 335 level 273 282 287 291 296 302 306 319 336 analyzer RF frequency 351 479 558 input attenuation 475 input port 476 level 473 measurements 478 sensitivity 477 tuning 351 479 558 ANT IN connector avoiding damage 58 95 112 349 352 476 480 508 557 559 562 connecting to 40 508 description 562 for ACP ratio measurements 91 95 for off the air measurements 95 310 349 476 557 for...

Page 623: ... 488 Signaling Encoder screen AMPS TACS mode 356 Signaling Encoder screen CDCSS mode 369 Signaling Encoder screen Digi Page mode 374 Signaling Encoder screen DTMF mode 379 Signaling Encoder screen EDACS mode 383 Signaling Encoder screen Func Gen mode 394 Signaling Encoder screen LTR mode 397 Signaling Encoder screen NAMP NTAC mode 356 Signaling Encoder screen NMT mode 424 Signaling Encoder screen ...

Page 624: ...2 CDCSS sequence 281 digitial paging data rate 286 dotting 360 362 information 360 362 LTR data rate 306 message 279 NMT data rate 425 parity 279 360 362 363 serial data word 439 specifying patter to display 275 sync word 279 triggering 275 type 360 362 word sync 360 362 block diagram AF Analyzer 101 Duplex Test screen 341 RF Analyzer 473 RF Generator 485 RX Test 495 TX Test 551 brightness setting...

Page 625: ...e annunciator 169 199 Register 169 199 Register annunciator 169 200 Release 169 200 view of 165 call origination 149 Call Processing Ch Loc 147 189 call processing AUDIO IN connector 120 connecting mobile station 118 description 113 general procedure 121 operational overview 115 screen description of 117 state diagram 116 Called Number Call Control screen 124 Calling Channel Number Signaling Encod...

Page 626: ...31 clear global user key assignment 83 local user key assignment 82 RAM 547 register contents 77 547 clock time of day 267 Clr Scr Tests IBASIC Controller screen 545 CMAX Call Configuration screen 251 Cnfg External Devices Tests Main Menu screen 522 Cntl Channel Call Control screen 126 co channel interference 423 Code Signaling Encoder screen CDCSS mode 369 Code oct Signaling Decoder screen CDCSS ...

Page 627: ...c 346 348 356 360 369 370 374 375 379 383 384 394 397 424 426 432 433 488 dc 346 348 356 360 369 370 374 375 379 383 384 394 397 424 426 432 433 452 488 notch frequency 260 CRT VIDEO OUTPUT connector description 565 Current AF Analyzer screen 103 110 Duplex Test screen 343 RF Analyzer screen 478 RF Generator screen 490 RX Test screen 500 TX TEST screen 554 TX Test screen 102 553 current measuremen...

Page 628: ...ormat 63 decoder AMPS TACS 271 CDCSS 280 digital paging 285 DTMF 289 EDACS 295 function generator 301 input attenuator 107 475 LTR 305 MPT 1327 311 NAMPS NTACS 271 narrowband 297 NMT 316 selecting 270 set up for 270 squelch effects 477 tone sequence 335 wideband 297 decrement changing setting 65 De Emp Gain AF Analyzer screen 104 De Emphasis AF Analyzer screen 104 Duplex Test screen 346 TX Test sc...

Page 629: ...en 102 553 Distortion Audio Frequency Analyzer screen 104 RF Analyzer screen 474 TX TEST screen 556 distortion 60 measurement 102 110 343 478 490 500 553 measurement amplifier 108 measurement variable notch filter 108 dotting bits 360 362 down arrow key 581 downloading programs 330 DSAT 274 279 Call Control Screen 131 Signaling Encoder screen NAMP NTAC mode 358 DSAT hex Call Control Screen 130 DST...

Page 630: ...el RX frequency 387 Working Channel TX frequency 387 edit tone sequence 434 EEX key 580 EIA radio standard 433 electronic serial number decimal 131 hexadecimal 131 emergency call 295 emf voltage 264 encoder AMPS TACS 355 CDSCC 368 data rate 367 digital paging 373 DTMF 378 EDACS 382 function generator 393 LTR 396 MPT 1327 404 NAMPS NTACS 355 narrowband 386 NMT 420 selecting 354 set up for 354 tone ...

Page 631: ...er data FOCC AMPS TACS NAMPS NTACS 355 Filter 1 Analog Meas screen 246 Filter 1 and Filter 2 AF Analyzer screen 106 RX Test screen 499 TX Test screen 556 Filter 2 Analog Meas screen 246 filters IF bandwidth 349 475 556 IF for ACP measurements 96 selecting 106 499 556 settings for CDCSS decoder 284 variable notch 108 Firmware Configure screen 258 firmware upgrading 588 Firmware revision number Conf...

Page 632: ...rier ACP measurement 92 center for notch filter 108 center for spectrum analyzer 507 center RF signal 96 351 479 558 decoded signal 302 effects of RF offset 265 for DTMF sequence 380 for tonesequence 434 measurement 97 111 352 479 491 559 offset receiver transmitter 259 offset RF generator analyzer 259 range for DTMF decoder 294 RF generator 499 RF generator reference 255 setting 263 350 489 span ...

Page 633: ... gate time 102 decoder 273 287 290 302 306 336 RF counter 477 Gaussian noise function generator 395 generator CDCSS 368 DTMF 378 tone sequence 432 generator AF amplitude 92 344 356 369 374 379 383 394 397 422 432 486 487 497 frequency 92 344 394 486 496 554 level 554 generator RF amplitude 345 498 frequency 350 499 output port 350 499 510 512 reference frequency 255 generator tracking amplitude 51...

Page 634: ...est set 439 582 HP IB Address I O Configure screen 439 HP IB connector description 568 HP IB control 85 HP IB operation squelch effects 478 hum and noise measuring 249 I I O Config Radio Interface screen 462 I O Configure screen Data Length 439 HP IB Address 439 IBASIC Echo 439 Inst Echo 439 Mode 440 Parity 440 Rcv Pace 440 Save Recall 441 Serial Baud 441 Serial In 442 Stop Length 442 view of 438 ...

Page 635: ... mode 273 Signaling Decoder screen CDCSS mode 282 Signaling Decoder screen Digi Page mode 287 Signaling Decoder screen DTMF mode 291 Signaling Decoder screen EDACS mode 296 Signaling Decoder screen Func Gen mode 302 Signaling Decoder screen LTR Seq mode 306 Signaling Decoder screen NAMPS NTACS mode 273 Signaling Decoder screen NMT mode 319 Signaling Decoder screen Tone Seq mode 336 Input Port Adja...

Page 636: ...keys Leftarrow 583 ADRS 582 backspace 583 CANCEL 583 CONFIG 582 DATA 580 DATA FUNCTIONS 581 DUPLEX 582 EEX 580 ENTER 580 front panel 580 HELP 582 HI LIMIT 581 HOLD 582 INCR SET 581 LO LIMIT 581 LOCAL 582 MEAS RESET 582 MSSG 582 NO 580 ON OFF 580 POWER 583 PRESET 582 PREV 582 PRINT 582 RECALL 582 REF SET 581 RX 582 SAVE 582 SCREEN CONTROL 582 SHIFT 583 TESTS 582 TX 582 unit of measure 580 YES 580 k...

Page 637: ...Encoder screen EDACS mode 385 loss between ANT IN and device under test 255 between DUPLEX OUT and device under test 258 between RF IN OUT and device un der test 264 Low Battery Configure screen 51 260 low battery setting 51 260 low limit removing 68 setting 67 Lower Limit Tests Pass Fail Limits screen 531 low level RF power measurements 97 112 349 352 476 480 491 557 559 LTR radio standard 399 LT...

Page 638: ...ps 76 setting a reference 70 setting limits 67 settling 109 speed ACP measurement 96 stopping analyzer 308 units 61 measurements ac level 59 101 341 473 485 496 ac level peak detector 108 ACP reference 92 adjacent channel power 90 91 AF power 60 AM depth 59 arming decoder 272 281 285 289 296 302 305 335 audio frequency 59 102 110 343 478 490 500 553 audio power 101 485 496 beat frequency 62 CDCSS ...

Page 639: ... 181 182 183 SPC Word 1 201 SPC Word 2 202 system parameter overhead word 1 201 system parameter overhead word 2 202 to view from mobile station handoff 189 to view from mobile station origina tion 193 to view from mobile station page 187 to view from mobile station registra tion 186 to view from mobile station release 191 to view from order to change TX pow er of mobile 192 types of 605 Message 1...

Page 640: ... transmitter power 127 monitor external 591 MPT 1327 decoder mode Data Rate 314 Timing 314 view of 311 MPT 1327 encoder mode Address Qualifier 404 Aloha Number 405 Control Channel 406 Delay Parameter 407 FCC Msg and Buffers 408 Msg Structures 414 Radio Unit Under Test 418 Simulated Calling Unit 419 System Identity 418 Test Mode 406 Traffic Chan Msg 413 Traffic Channel 407 undisplayed controls 407 ...

Page 641: ...N 427 Password 428 Phi Signal 427 Pre Emp 428 SIS Challenge 428 SIS Response 428 Standard 429 TCI 429 Traffic Area Alt 429 Traffic Area Main 430 Traffic Channel Alt Number 430 Traffic Channel Alt Power 430 Traffic Channel Main Number 431 Traffic Channel Main Power 431 view of 420 NMT tests automated with software 324 base station 321 creating 326 manual 323 mobile station 321 mobile telephone exch...

Page 642: ...448 markers level 449 resolution 109 scale 448 signal source 109 squelch effects 477 triggering display 451 Oscilloscope screen Auto Norm 450 Cont Single 451 Controls 446 Internal 450 Level div 451 Lvl marker 449 Main menu 447 Marker menu 448 Marker To 448 Position 448 Pre Trig 451 Time marker 449 Time div 447 Trigger menu 450 Vert Offset 447 Vert div 447 view of 446 output coupling 346 356 369 37...

Page 643: ... 163 Phone numbers customer support 10 Pk Det To AF Analyzer screen 108 Pk Hold Spectrum Analyzer screen 517 POCSAG data rates 374 radio standard 377 Polarity Signaling Decoder screen AMPS TACS mode 274 Signaling Decoder screen CDCSS mode 282 Signaling Decoder screen Digi Page mode 288 Signaling Decoder screen EDACS mode 296 Signaling Decoder screen LTR mode 307 Signaling Decoder screen NAMP NTAC ...

Page 644: ...42 343 344 345 346 347 478 486 487 490 497 498 500 509 552 553 554 555 Proc Save Delete Procedure Tests Main Menu screen 524 Procedure Library Tests Save Delete Procedure screen 533 Program Tests Main Menu screen 524 Programmer s Guide 85 programming downloading 330 NMT tests 326 programming example NMT test external controller 329 NMT test internal controller 328 programs language 520 running fro...

Page 645: ...on 144 registration identification message 208 registration increment global action mes sage 206 RELEASE 82 83 Release Call Control screen 135 Call Data screen 169 200 release global user key assignment 83 local user key assignment 82 mobile station 147 remote control 85 remote operation 85 mode 440 squelch effects 478 remove register contents 77 remove high low limits 68 remove pass fail limits 6...

Page 646: ...measurements 91 for measuring high power devices 512 for measuring transmitter power 95 112 349 352 476 480 491 557 559 for RF measurements 95 349 476 557 for testing tranceivers 510 for testing transceivers 350 489 499 gain at 264 input attenuation 94 475 515 loss at 264 power measured at 97 112 352 480 491 559 RF input selecting port 95 349 476 557 RF Level Offsert Configure screen 265 RF measur...

Page 647: ...reen control keys 42 screen dump 66 453 582 screens accessing 42 go to previous 582 interactions 54 printing 66 453 582 RX TX screen interactions 266 setting intensity 50 259 using screen control keys 42 second word of called address 176 SECURE_IT 547 securing files 547 Select Procedure Filename Tests Main Menu screen 524 Select Procedure Location Tests Main Menu screen 524 Tests Save Delete Proce...

Page 648: ... 76 saving 76 SHIFT key 583 shock hazard avoiding 565 SID Call Control screen 136 signal level data 357 signal strength Phi signal 427 signal strength meter 546 signal type pager 286 signal noise ratio measurement 60 operation 102 110 343 478 490 500 553 signaling decoder selecting 270 Signaling Decoder screen Mode AMPS TACS 271 Mode CDCSS 280 Mode Digi Page 285 Mode DTMF 289 Mode EDACS 295 Mode F...

Page 649: ...on 318 Exit Status 317 First Frame 316 Frame Digits 318 Input Level 319 Load Test 319 Num 318 Run Test 320 Single Cont 320 Standard 320 Stop Test 320 Time 318 Trig Level 320 Type 318 Signaling Decoder screen Tone Seq mode AF Anl In 335 Arm Meas 335 Freq 336 Freq Error 336 Gate Time 336 Input Level 336 Off Time 337 On Time 337 Single Cont 337 Stop Meas 337 Sym 337 Trig Level 337 Signaling Dev Signa...

Page 650: ...io Out 397 Bursts 397 Data Rate 397 FM Coupling 397 Free 1 398 Free 2 398 Goto 1 398 Goto 2 398 Home 1 398 Home 2 398 ID 1 398 ID 2 398 LTR message 398 Polarity 398 Send 398 Send Mode 399 Standard 399 Stop 399 Signaling Encoder screen MPT 1327 mode Address Qualifier 404 Aloha Number 405 Control Channel 406 Radio Unit Under Test 418 Simulated CallingUnit 419 System Identity 418 Test Mode 406 Traffi...

Page 651: ...g Decoder screen Tone Seq mode 337 SIS Challenge Signaling Encoder screen NMT mode 428 SIS Response Signaling Encoder screen NMT mode 428 Site ID Signaling Encoder screen EDACS mode 386 slot timing MPT 1327 decoder 314 Sngl Step Tests IBASIC Controller screen 545 SNR AF Analyzer screen 110 Duplex Test screen 343 measurement 60 102 110 343 478 490 500 553 operation 102 110 343 478 490 500 553 RF An...

Page 652: ...387 STD450 NMT radio standard 323 429 STD900 NMT radio standard 323 429 Step Tests Order of Tests screen 529 Stop Signaling Encoder screen AMPS TACS mode 366 Signaling Encoder screen CDCSS mode 371 Signaling Encoder screen Digi Page mode 377 Signaling Encoder screen DTMF mode 380 Signaling Encoder screen EDACS mode 387 Signaling Encoder screen LTR mode 399 Signaling Encoder screen NAMP NTAC mode 3...

Page 653: ...e Ch 526 Insert Ch 526 Main Menu 526 527 Print All 526 527 view of 525 Tests Execution Conditions screen 521 Autostart Test Procedureon Power Up 536 Continue 536 If Unit Under Test Fails 536 Main Menu 536 Output Heading 536 Output Results For 537 Output Results To 536 Run Test 537 Test Procedure Run Mode 537 view of 535 Tests External Devices screen 521 Addr 539 Calling Name 539 Delet Ins 539 Exte...

Page 654: ...mbol frequency 336 symbol frequency error 336 using frequencies 434 using hexadecimal numbers 434 using relative amplitude 434 Tone Sequence decoder mode AF Anl In 335 Arm Meas 335 Freq 336 Freq Error 336 Gate Time 336 Input Level 336 Off Time 337 On Time 337 Single Cont 337 Stop Meas 337 Sym 337 Trig Level 337 view of 335 Tone Sequence encoder mode AFGen2 To 432 Audio Out 432 Bursts 433 FM Coupli...

Page 655: ...e 450 level 275 283 288 303 308 320 337 450 negative edge 451 NMT alarm 423 positive edge 451 radio interface 460 signal 450 source oscilloscope 450 time 449 troubleshooting 502 trunked receiver channel home channel 401 trunked transmit channel home channel 402 trunking data 396 trunking message 396 Tune Freq Adjacent Channel Power screen 96 Duplex Test screen 351 RF Analyzer screen 479 TX Test sc...

Page 656: ...l Limits screen 531 User Def Base Freq Configure screen 255 user keys assigning global 83 assigning local 82 clearing global assignment 83 clearing local assignment 82 deleting global assignment 83 deleting local assignment 82 example 82 explanation 80 global assignment 83 global defined 80 local assignment 82 local defined 80 preassigned 81 releasing global assignment 83 releasing local assignmen...

Page 657: ... 182 183 second word of called address 176 serial number 174 to view from mobile station handoff 189 to view from mobile station origina tion 193 to view from mobile station page 187 to view from mobile station registra tion 186 to view from mobile station release 191 to view from order to change TX pow er of mobile 192 word sync bits 360 362 word sync delay 357 working status 387 Working Channel ...

Page 658: ...8 Y YES key 580 Z zero crossing detecting 282 zero reference tranmitter power 97 480 560 zeroing DCFM 488 measurement offset 103 power meter 97 141 152 480 560 ZVEI1 radio standard 433 ZVEI2 radio standard 433 ...

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