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Aeroflex Operation Manual

NAV 2000R SIGNAL GENERATOR - REV. 0 – JULY 26, 2007 - PG 3-35

COMMAND:

SET SELECTIVE CALLING PULSE #1 CODE

FORMAT:

SCL 1 CODE= AA

This command allows the PULSE #1 code to be programmed in the Selective Calling mode of operation.

The code specifies the frequency of the two tones modulated in PULSE #1. The first ASCII character in

the code specifies TONE #1 frequency and the second specifies TONE #2 frequency. The code may

range from A to S for each tone.

COMMAND:

SET SELECTIVE CALLING PULSE #2 CODE

FORMAT:

SCL 2 CODE= AA

This command allows the PULSE #2 code to be programmed in the Selective Calling mode of operation.

The code specifies the frequency of the two tones modulated in PULSE #2. The first ASCII character in

the code specifies TONE #1 frequency and the second specifies TONE #2 frequency. The code may

range from A to S for each tone.

COMMAND:

SET PULSE #1 TONE #1 FREQUENCY

FORMAT:

SCL 1 TONE 1= DDDD[.D]

This command allows changing the standard frequency (set with SCL 1 CODE command) for TONE #1 of

PULSE #1 for the Selective Calling mode of operation. The frequency is specified in Hz using 0.1 Hz

resolution and the range is from 100 to 9999.9 Hz.

COMMAND:

SET PULSE #1 TONE #2 FREQUENCY

FORMAT:

SCL 1 TONE 2= DDDD[.D]

This command allows changing the standard frequency (set with SCL 1 CODE command) for TONE #2 of

PULSE #1 for the Selective Calling mode of operation. The frequency is specified in Hz using 0.1 Hz

resolution and the range is from 100 to 9999.9 Hz.

COMMAND:

SET PULSE #2 TONE #1 FREQUENCY

FORMAT:

SCL 2 TONE 1= DDDD[.D]

This command allows changing the standard frequency (set with SCL 2 CODE command) for TONE #1 of

PULSE #2 for the Selective Calling mode of operation. The frequency is specified in Hz using 0.1 Hz

resolution and the range is from 100 to 9999.9 Hz.

COMMAND:

SET PULSE #2 TONE #2 FREQUENCY

FORMAT:

SCL 2 TONE 2= DDDD[.D]

This command allows changing the standard frequency (set with SCL 2 CODE command) for TONE #2 of

PULSE #2 for the Selective Calling mode of operation. The frequency is specified in Hz using 0.1 Hz

resolution and the range is from 100 to 9999.9 Hz.

COMMAND:

SET SELECTIVE CALLING PULSE #1 TIME

FORMAT:

SCL 1 TIME= D.DDD

This command programs the pulse width of PULSE #1 in the Selective Calling mode of operation. The

range is from 0 to 2.000 S in .001 S steps.

COMMAND:

SET SELECTIVE CALLING PULSE #2 TIME

FORMAT:

SCL 2 TIME= D.DDD

This command programs the pulse width of PULSE #2 in the Selective Calling mode of operation. The

range is from 0 to 2.000 S in .001 S steps.

Содержание NAV 2000R

Страница 1: ...R 15 CFR 730 774 It cannot be transferred to any foreign third party without the specific prior approval of the U S Department of Commerce Bureau of Industry and Security BIS Violations of these regul...

Страница 2: ...ct all power sources signal sources and loads connected to the unit e If maintenance or service must be performed with power applied take precautions against accidental disconnection of equipment comp...

Страница 3: ...0R Signal Generator REVISION 0 July 26 2007 REV REV DRAWING NO _LEVEL DRAWING NO LEVEL Safety and Regulatory 00 Table of Contents 00 Section I 00 Section II 00 Section III 00 Section IV 00 Section V 0...

Страница 4: ......

Страница 5: ...d or adhered to could result in damage to the product or loss of important data Do not proceed beyond a CAUTION notice until the indicated conditions are fully understood and met Caution refer to acco...

Страница 6: ...tes that the power line switch is OFF Standby This symbol indicates that the power line switch is in STANDBY Caution risk of electric shock Danger high voltage Caution hot surface Danger high temperat...

Страница 7: ...nnel or damage to the equipment To prevent damage never apply solvents to the equipment housing For cleaning wipe the equipment with a cloth that is lightly dampened with water mild detergent or alcoh...

Страница 8: ...ains plug Ensure the power cord is easily accessible and removable in the event of an emergency which requires immediate disconnection 5 7 3 6 2 4 1 1 Appliance coupler 2 Appliance inlet 3 Detachable...

Страница 9: ...USER INTERFACE 3 3 3 5 1 NAV 2000R MODES 3 3 3 5 2 MENU LAYOUT DESCRIPTION 3 3 3 5 3 GETTING AROUND IN THE MENUS 3 4 3 5 4 CHANGING FIELD DATA ALPHANUMERIC 3 5 3 5 4 1 EDITING NUMERIC OR ALPHANUMERIC...

Страница 10: ...ATOR MODULE DESCRIPTION 4 5 4 3 9 MODULATOR GENERAL OPERATIONAL DESCRIPTION 4 6 4 3 10 AUDIO BOARD OPERATION 4 6 4 3 11 RF MODULATOR BOARD OPERATION 4 7 4 3 12 PROGRAMMABLE STEP ATTENUATOR CIRCUIT 4 8...

Страница 11: ...PLIFIER 4 19 4 5 18 RF LEVELING AMPLIFIER 4 20 4 5 19 FIXED GAIN AMPLIFIERS 4 20 4 5 20 DETECTOR 4 20 4 5 21 LPF INTEGRATOR 4 21 4 5 22 SCALING RF LEVEL SET 4 21 4 5 23 RF HIGH LOW INDICATION 4 22 4 6...

Страница 12: ...on the rear panel inside the Appliance Inlet A1FL1 1 disconnect the appliance coupler 2 With a flat blade screwdriver or similar tool open the cover 3 With a flat blade screwdriver or similar tool rem...

Страница 13: ...10 MHZ OUT A5A1J7 and 10 MHZ IN A5A1J6 terminals ports use M17 84 RG223 double shielded coaxial cable or equivalent properly terminated to BNC connectors 2 It is recommended that the cable connecting...

Страница 14: ...osition 5 Check that the voltage selected appears in the voltage selection window when the cover is snapped into place Max RF OUTPUT Safe Input Power 50 W MOD STATUS 7 50 W 50 V dc TA 200 mW 0 V dc RF...

Страница 15: ...Hz vs frequency Hz single side band phase noise dBc Hz vs frequency Hz 0 FIGURE 1 1 TYPICAL GRAPH FIGURES Residual FM 0 15 56 25 MHz 25 Hz at 0 05 15 kHz 56 25 112 50 MHz 10 Hz Post Detection 112 50 2...

Страница 16: ...dio 0 1 THD 90 150 Hz phase Fixed 0 0 0 01 degree Variable Resolution 0 01 degree Variable Accuracy 0 05 degrees Amplitude modulation Range per tone total mod not to exceed 99 90 and 150 Hz Default 20...

Страница 17: ...M Variable range 0 800 in 0 001 increments Total system error audio modulation 0 0003 0 DDM 0 0012 0 045 DDM 0 0021 0 091 DDM 0 0038 0 175 DDM 0 0083 0 400 DDM ADF Modulation tone Preset 1000 Hz Varia...

Страница 18: ...Modulation bandwidth 10 Hz to 22 kHz Input level 1 V peak Morse Code ident Programmable in VOR Localizer or ADF mode Max Length 6 characters Rate programmable Dot Dash spacing times individually prog...

Страница 19: ...PMENT ITEM DESCRIPTION TYPE 1 Extender Board JPN 20 5760 00 1 7 SERVICE INFORMATION If you have any questions regarding service you may contact the factory at the address listed below Aeroflex 400 New...

Страница 20: ...ng shipment If a claim for damage is to be filed save the shipping container to substantiate the claim When all the equipment has been unpacked return all the packing material to the container for fut...

Страница 21: ...remote user interface The local user interface uses the front panel keypads and display The remote interface uses a General Purpose Interface Bus GPIB Throughout this manual GPIB shall be used to mean...

Страница 22: ...he bottom left corner of the front panel Upon power up the NAV 2000R will perform a self test and when complete will indicate self test results on the display 3 5 LOCAL USER INTERFACE Local operation...

Страница 23: ...o composite output signals These modes VORa and LOCa are accessed by selecting the audio control mode bubble from within their 1st page The SELCAL mode is accessed from the SELCAL bubble in PAGE 1 of...

Страница 24: ...a remote application program has commanded the NAV 2000R via the GPIB bus During remote operation all front panel keyboard controls are locked out The CLR LCL key the only key recognized during remot...

Страница 25: ...eing edited The left and right arrow keys may be used to force the cursor to the character just left or right of the current cursor position This allows the user to alter any digit or character within...

Страница 26: ...tus line If the data entered into the numeric field is greater than the maximum acceptable upper limit the field will be set to its upper limit and the message VALUE LIMITED TO MAXIMUM will appear bri...

Страница 27: ...ovolts and millivolt numbers may be entered using the uV and mV keys STO RCL respectively The default displayed units normally dBm may be changed by pressing the SEL key and then pressing either the u...

Страница 28: ...ation percents to total 99 9960 Hz FREQUENCY Programs the 9960 Hz center frequency The user may specify a frequency from within the 7968 0 Hz to 11952 0 Hz range with a resolution of 0 1 Hz Any freque...

Страница 29: ...er may be entered either at the beginning or end to allow entry of character strings shorter than six WORD RATE Allows the programming of the repetition rate at which the morse code identifier is tran...

Страница 30: ...his field is a discrete toggle type field and the default reference is set to FROM 30 Hz MOD Specifies whether the 30 Hz signal is to be modulated The field toggles between ON and OFF whenever the SEL...

Страница 31: ...ds are switched The default value is LEFT 150 FREQ MHz This field allows the RF frequency to be programmed The RF frequency may be programmed in 0 00001 MHz steps within the NAV 2000R frequency range...

Страница 32: ...e the system limits the 150 Hz modulation field to a value that forces all modulation percents to total 99 A current value for the DDM field will be computed and the field will be updated for a newly...

Страница 33: ...Morse code dot time in milliseconds The valid range is from 50 ms to 250 ms in 1 ms steps The default value is 150 ms DASH TIME Allows programming of Morse code dash time in milliseconds The valid ran...

Страница 34: ...ields are switched The default value is LEFT 150 90 Hz MOD Specifies whether the 90 Hz signal is to be modulated The field toggles between ON and OFF whenever the SEL key is pressed while the field is...

Страница 35: ...ighlighted This field allows the paired ILS frequency to be used to change the actual Glideslope frequency being generated With the ILS PAIR window displayed only paired frequencies of 108 1 to 111 95...

Страница 36: ...entage causes the total modulation to exceed 99 In this case the system limits the 150 Hz modulation percentage so that the total modulation percentage is 99 A current value for the DDM field will be...

Страница 37: ...nt modulation value greater than 99 IDENT MODE Allows the user to specify how the identification tone is to be modulated This is a toggle type field containing three valid options OFF CODE AND TONE A...

Страница 38: ...VEL This field allows the RF level to be programmed The RF level may be programmed with 1 10th dBm resolution using either dBm or uV mV units DBm numbers are entered using the ENT key Microvolts and m...

Страница 39: ...y be entered using the uV and mV keys STO RCL respectively The default displayed units normally dBm may be changed by pressing the SEL key and then pressing either the uV mV or dBm keys FREQ MHz This...

Страница 40: ...lt displayed units normally dBm may be changed by pressing the SEL key and then pressing either the uV mV or dBm keys FREQ MHz This field allows the RF frequency to be programmed CHANNEL This field st...

Страница 41: ...field may be edited to produce non standard frequencies PULSE 2 CODE Allows modification to the PULSE 2 TONE 1 and TONE 2 frequencies The field uses the alphanumeric field entry The two characters in...

Страница 42: ...ions are discussed in this section 0 EXIT UTILITY MENU 1 DISPLAY MODIFY GPIB ADDRESS 2 SELECT EXT MODULATION MODE 3 SET EXT MOD RELAY On Off 4 SELECT CALIBRATION MODE 5 DISPLAY SYSTEM STATUS 6 EXECUTE...

Страница 43: ...ered in detail in Section 3 5 16 DISPLAY SYSTEM STATUS This option displays the power on self test results and the current operational status of the NAV 2000R It can be used to ensure proper operation...

Страница 44: ...lows a visual test of the display The test turns on all of the display s pixels A message PRESS KEY TO STOP is moved around in the display in random places Observe the display to determine if all of t...

Страница 45: ...current page and field selector positions This means that all entries of the six primary modes VOR LOC G S ADF MKR and COM and the secondary modes EMM VORa and LOCa are stored Current NAV 2000R condit...

Страница 46: ...ired However if the controller requests the NAV 2000R to return multiple information the last requested information will be the only data available After the GPIB controller sends a command string to...

Страница 47: ...ion of the hexadecimal number indicate BIT 0 Fatal error exists Use FERR for type BIT 1 HOST CPU operating from boot memory NAV 2000R Operating software not running BIT 2 Remote only operation selecte...

Страница 48: ...OST ROM FAILURE BIT 1 HOST RAM FAILURE BIT 2 HOST FLASH EPROM FAILURE BIT 3 HOST SETUPS REGISTER FAILURE BATTERY RAM BIT 4 HOST NONVOLATILE RAM FAILURE BATTERY RAM BIT 5 Not defined BIT 6 Not defined...

Страница 49: ...The range allowed is from 0 150 to 450 000 MHz COMMAND SET MARKER BEACON MODE FORMAT MKR MODE AAAAA This command sets the current marker beacon mode of operation The argument value must be any of the...

Страница 50: ...of ASCII characters allowed is six and any other characters will be truncated COMMAND DOT TIME LENGTH FORMAT DOT TIME DDD This command changes the period of time defining a Morse code DOT Range is fr...

Страница 51: ...ent value is specified in Hz with 0 1 Hz steps COMMAND SET 90 150 Hz PHASE FORMAT PHASE DDD DD This command deviates the 90 Hz and 150 Hz phase relationship These signals are only generated during the...

Страница 52: ...resolution COMMAND SET 90 Hz MODULATION PERCENTAGE FORMAT 90HZ MOD DD DD FORMAT LOCa mode only 90HZ MOD AAA This command sets the 90 Hz modulation percentage The 90 Hz signal is produced during LOC a...

Страница 53: ...communications COM mode of operation The programmable resolution is 0 01 percent COMMAND SET TOTAL PERCENT OF MODULATION FORMAT TOTAL MOD DD DD This command allows the total percent of modulation to b...

Страница 54: ...TIVE CALLING ACTIVE INACTIVE FORMAT SCL INIT AAAAAAAA This command initiates the transmission of the two Selective Calling pulses using the current settings when ACTIVE is in the data field When INACT...

Страница 55: ...to 9999 9 Hz COMMAND SET PULSE 1 TONE 2 FREQUENCY FORMAT SCL 1 TONE 2 DDDD D This command allows changing the standard frequency set with SCL 1 CODE command for TONE 2 of PULSE 1 for the Selective Cal...

Страница 56: ...y be summed with internally generated audio or may be controlled separately within the EMM mode External audio is AC coupled with a flat frequency response from 10 Hz through 22 kHz The external audio...

Страница 57: ...a key is depressed after debouncing its row and column are latched on the keypad board Additionally the row and column is decoded to determine whether the depressed key is from the upper or lower bank...

Страница 58: ...o 127 dBm The leveling loop is temperature and frequency response compensated 4 3 2 FREQUENCY The RF frequency coverage provided is 15 MHz to 450 MHz This is generated within the synthesizer module Th...

Страница 59: ...ns equipment The percent modulation is set by the system controller processor using the attenuator on the audio board The sum of the two tones is limited to 99 Then on the RF Modulator Board the audio...

Страница 60: ...a from the DSP processor is sent to a 8 times oversampling digital filter whose output rate is 8 times higher than the input sample rate The digital filter adds additional reconstruction points accord...

Страница 61: ...fm COS wmti AvSIN wvti AiSIN witi where Ac Amplitude of the carrier signal Av Amplitude of the reference signal Ai Amplitude of the ident signal wcti Instantaneous phase of the carrier wmti Instantane...

Страница 62: ...RF modulator board and a programmable step attenuator The modulation of a CW carrier is achieved by applying the CW signal to the RF modulator board where it is modulated by signals appropriately con...

Страница 63: ...de some self testing during normal operation and during power on self test 4 3 10 AUDIO BOARD OPERATION The audio board accepts a fixed level audio signal The level of this signal is adjusted and summ...

Страница 64: ...he wide linear dynamic range of the gain control input the DC component of the audio signal is not highly critical However the AC component of the audio signal applied to the VGA must be calibrated ve...

Страница 65: ...cussed above The LPF Integrator circuitry filters and integrates the detector output to determine its average DC level This signal is an input to the RF leveling output leveling loop In the Scaling RF...

Страница 66: ...700 kHz plus or minus 1 2 kHz with millihertz of resolution The output of the DAC is passed through a 1 MHz low pass filter and then to a mixer Here it is mixed with the 10 MHz to produce 10 7 MHz pl...

Страница 67: ...n VCO frequency range The output of each VCO is combined buffered and split Only one of the four VCOs operate at one time The outputs are split three ways to the PLL buffer and two to an output buffer...

Страница 68: ...ram to verify it The DSP program is then transferred to the DSP RAM Upon the CPU releasing the DSP reset the DSP processor reads calculates and compares a stored checksum with the calculated checksum...

Страница 69: ...constants are some of the items stored within the battery backed RAM The non volatile memory module U14 is an integrated battery backed up static RAM module If for whatever reason the battery RAM modu...

Страница 70: ...d from the front panel keyboard are routed through the mother board Power supply voltages are connected to the mother board at terminal block TB1 These voltages are 15Vdc 5 2Vdc and 12Vdc The 5 2Vdc v...

Страница 71: ...ddress lines five additional address lines address latch enable a direction line read and write four request lines and a bus granted line The CPU board controls all bus transactions When the CPU board...

Страница 72: ...and data memory RAM after booting is completed The 14 bit DSP address bus is buffered by U9 and U10 and sent to connector J1 to be shared by the CPU board The middle 8 bits of the DSP data bus is buf...

Страница 73: ...nt line returns an active low bus grant signal after a short time indicating that the module is ready for reads or writes to its valid addresses The bus grant is open collector as it is for all module...

Страница 74: ...e at a low state The RC time constants in both sections of retriggerable one shot U14 are sufficiently long that the outputs will remain triggered at the lowest anticipated modulating frequency if sig...

Страница 75: ...modulation performance It is used by the Detected Audio Hi Lo Indication Audio High Low Indication RF Level High Low Indication RF level set Modulation Centering Calibration and Detector Bias networks...

Страница 76: ...DSP or an external source module The audio modulation signal is conditioned by the audio board to achieve RF modulation The leveling loop ensures that the output of the RF Modulator Board is always a...

Страница 77: ...the input CW RF carrier Although the RF is not completely cut off it is adequately attenuated Decreasing the DC bias point of the modulating signal would be to use less of the linear dynamic range of...

Страница 78: ...this amplifier will have a nominal carrier level of about 6 dBm At the output of the second Fixed Gain Amplifier a small portion of the RF power is sent to the Detector and the main power path is att...

Страница 79: ...detectors voltage RF level is calibrated by R39 Minor detector frequency response corrections are accomplished by software which adjusts the voltage reference by means of the audio board At output fr...

Страница 80: ...the NAV2000R main CPU is accomplished by means of RAM U2 This memory may be read or written either by the board microprocessor U1 or by means of the NAV 2000R system buss This access is time multiple...

Страница 81: ...ference frequency for the MAIN PLL on the RF OUTPUT board The synthesizer frequency standard is the Temperature Compensated Voltage Controlled crystal Oscillator TCVCXO Y1 The output of this TCVCXO is...

Страница 82: ...r the PIN diode switch CR5 Diodes CR14 and CR15 and transistor Q27 logic selects routing to the PIN diode switch only when either path of CR5 is selected Otherwise the path to the dividers is selected...

Страница 83: ...Os and a common output buffer amplifier Each VCO covers a portion of this tuning range The tuning range of each VCO is as follows VCO1 380 to 456 25 MHz VCO2 320 to 380 MHz VCO3 275 to 320 MHz VCO4 22...

Страница 84: ...01 s control pin thereby closing the path between the NAV 2000R output stage and the unit under test U1 compares the voltage from the detector circuit composed of R102 CR103 R101 AND C101 to a 2V refe...

Страница 85: ...1 BILLS OF MATERIALS ASSEMBLY DRAWINGS AND SCHEMATICS To assist in the maintenance of the NAV 2000R Signal Generator Bills of Materials Assembly Drawings Schematics and Test Procedures are included i...

Страница 86: ...EVEL Command RF LEVEL dBm Values 127 dBm to 0 dBm uV Values 100 uV to 890 uV to nearest 1 dBm mV Values 1 00 mV to 224 mV to nearest 1 dBm Default 127 0 dBm AUDIO LEVEL Command AUDIO LEVEL Values 0 to...

Страница 87: ...PERCENT MODULATION Command 1020HZ MOD Values 0 to 99 0 01 steps Default 00 00 TOTAL PERCENT MODULATION Command TOTAL MOD Values 0 to 99 0 01 steps Default 60 00 30 Hz FREQUENCY Command 30HZ Values 20...

Страница 88: ...ommand CHAR SPACE Values 150 mS to 750 mS 1 mS steps Default 450 mS WORD RATE Command WORD RATE Values 1 0 to 65 0 seconds 1 second steps Default 30 0 seconds VORa AUDIO LEVEL Command AUDIO LEVEL Valu...

Страница 89: ...DE SELECTION Command MODE LOCa Values n a Default n a 90 Hz PERCENT MODULATION Command 90HZ MOD Values 0 00 to 40 0 0 01 steps Default 20 00 150 Hz PERCENT MODULATION Command 150HZ MOD Values 0 00 to...

Страница 90: ...FF IDENTIFICATION CODE Command IDENT CODE Values 6 characters of A thru Z 0 thru 9 Default JCAIR DOT TIME Command DOT TIME Values 50 mS to 250 mS 1 mS steps Default 150 mS DASH TIME Command DASH TIME...

Страница 91: ...Values ON OFF Default ON 150 Hz PERCENT MODULATION Command 150HZ MOD Values ON OFF Default ON GLIDESLOPE RF LEVEL Command RF LEVEL dBm Values 127 dBm to 0 dBm uV Values 100 uV to 890 uV to nearest 1...

Страница 92: ...s Default 150 0 Hz 90 150 Hz PHASE SHIFT Command PHASE Values 0 to 359 99 degrees 0 01 degrees Default 0 ADF RF LEVEL Command RF LEVEL dBm Values 127 dBm to 0 0 dBm uV Values 100 uV to 890 uV to neare...

Страница 93: ...teps Default 95 00 MODULATION FREQUENCY Command MKR FREQ Values 10 Hz to 18000 0 Hz 0 1 Hz steps outer Default 400 0 Hz pulsed 2 dashes second middle Default 1300 0 Hz Pulsed 95 dot dash minute inner...

Страница 94: ...mV Values 1 00 mV to 224 mV to nearest 1 dBm Default 127 0 dBm RF ON OFF Command SCL RF KEY Values ON OFF Default OFF SELECTIVE CALLING INITIATE Command SCL INIT Values ACTIVE INACTIVE Default INACTIV...

Страница 95: ...Command SCL 2 TONE 2 Values 100 to 9999 9 Hz 0 1 Hz steps PULSE 1 TIME Command SCL 1 TIME Values 0 to 2 000 S 0 001 S steps Default 1 S PULSE 2 TIME Command SCL 2 TIME Values 0 to 2 000 S 0 001 S ste...

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