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8003 Precision Scalar Analyzers

Index-6

Manual 20791, Rev. C, June 2001

Summary of Contents for 8003

Page 1: ...6 4442 925 328 4700 Fax 800 444 2878 Customer Service 925 328 4702 CS Fax www gigatronics com ISO 9001 Certified Process Registrar BSI Certification No FM 34226 Registered 04 June 1996 Amended 01 March 2000 P N Revision Print Date 8003 Precision Scalar Analyzer Operation Manual 20791 C June 2001 8003 ...

Page 2: ...r any consequential damages Specification and price change privileges are reserved by Giga tronics Exclusion of Other Warranties The Warranty described above is Buyer s sole and exclusive remedy and no other Warranty whether written or oral is expressed or implied Giga tronics specifically disclaims the implied warranties of merchantability and fitness for a particular purpose No statement represe...

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Page 4: ...ng that the password just defined be entered again for confirmation When the password has been confirmed the defined password will then be accepted 10 Then press RETURN and PROGRAM EEPROM to store the password in the sensor EEPROM From this point on the password must be entered before any calibration data can be changed in the sensor EEPROM 11 Start with Step 6 for the next sensor to be protected ...

Page 5: ... Voltage Selector Fuse Holder 1 5 1 2 5 Environmental Requirements 1 5 1 2 6 Items Furnished 1 5 1 2 7 Items Required 1 6 1 2 8 Tools Test Equipment 1 6 1 2 9 Cooling 1 6 1 2 10 Cleaning 1 6 1 2 11 Receiving Inspection 1 6 1 2 12 Preparation for Reshipment 1 6 1 3 Specifications 1 7 1 3 1 Cursors Markers 1 8 1 3 2 Accuracy 1 9 1 3 2 1 Transmission Loss or Gain Measurements 1 9 1 3 2 2 Reflection M...

Page 6: ...trols 2 51 2 6 1 General Description 2 51 2 6 2 ATE Operation 2 51 2 6 3 8003 Source Compatibility 2 51 2 6 4 Key Operation 2 52 2 6 4 1 UPDATE SWEEPER ON OFF Key 2 52 2 6 4 2 START Key 2 52 2 6 4 3 STOP Key 2 53 2 6 5 POWER Key 2 54 2 6 6 SWEEP TIME Key 2 56 2 7 SYSTEM Controls 2 57 2 7 1 PRESET Key 2 57 2 7 2 CONFIG Key 2 57 2 8 Front Panel Operation 2 66 2 8 1 Calibrating for Power Measurement ...

Page 7: ...ystem Controller 3 1 3 2 2 Set the GPIB Address 3 1 3 2 2 1 Programming the 8003 3 2 3 3 Structured GPIB Language 3 7 3 3 1 Common Structure 3 7 3 3 2 8003 GPIB Commands 3 7 3 3 3 Command Execution 3 10 3 3 3 1 hs Definition 3 10 3 3 3 2 ds Definition 3 10 3 3 3 3 us Definition 3 10 3 3 3 4 EOL Definition 3 10 3 3 3 5 Case Insensitivity 3 10 3 3 4 IEEE GPIB Interface Characteristics 3 11 3 3 5 Cha...

Page 8: ...ternal Status 3 71 3 3 33 GPIB PRIVATE Interface 3 71 3 3 34 Pass Through Feature 3 72 4 Performance Test Calibration 4 1 General 4 1 4 2 Calibrator Verification Procedure 4 3 4 2 1 Calibrator Output Power Reference Level 4 3 4 2 1 1 Procedure 4 3 4 2 2 Calibrator Frequency Check 4 5 4 3 Performance Verification Tests 4 6 4 3 1 Equipment Required 4 6 4 3 2 Instrument Plus Power Sensor Linearity 4 ...

Page 9: ...LaserJet Family RS 232 Cable Interconnections B 8 B 4 3 1 RS 232 Electrical Description B 8 B 4 4 LaserJet Printer Switch Jumper Location and Settings B 9 B 5 Plotter GPIB Installation Interconnections Pen Colors B 10 B 5 1 HP 7550A B 10 B 5 1 1 HP 7550A Pen Color Format 8 Pens B 10 B 5 2 HP 7440A B 11 B 5 2 1 HP 7440A Pen Color Format 8 Pens B 11 B 5 3 HP 7475A B 12 B 5 3 1 HP 7475A Pen Color For...

Page 10: ...vice Measurement Plot Typical Display 2 74 Figure 2 28 Cursor Plot Typical Display 2 74 Figure 2 29 Swept Source Power Sensor Only Block Diagram w DUT 2 75 Figure 2 30 More Accurate Insertion Loss Ratioing Meas Back to Back Adpts Improv ing Source Match 2 76 Figure 2 31 Two Sensor Insertion Loss Setup w a Power Splitter 2 77 Figure 2 32 Two Sensor Insertion Loss using a Directional Coupler 2 77 Fi...

Page 11: ...tive Reading 2 101 Figure 2 59 Menus Typical Display Power Sweep Measurements 2 104 Figure 3 1 Location of GPIB System Connection Rear Panel 3 1 Figure 3 2 GPIB Commands Front 3 8 Figure 3 3 GPIB Commands Back 3 9 Figure 3 4 Plot Obtained Using More Complex HP Series 300 Prg Example 3 28 Figure 3 5 Limit Line Display Example 3 63 Figure 4 1 Calibrator Output Test Setup 4 3 Figure 4 2 Power Lineari...

Page 12: ...001 Tables Table 3 1 Definition of ASCII Codes 3 26 Table 4 1 Test Equipment Required 4 2 Table A 1 Power Sensor Selection Guide A 2 Table A 2 Power Sensor Cal Uncertainties A 3 Table A 3 Directional Bridge Selection Guide A 4 Table B 1 8003 Default Settings B 1 ...

Page 13: ...neral Purpose Interface Bus GPIB All programming codes are presented in this chapter with various applications to aid you in understanding the operation 4 Performance Test Calibration This chapter provides the procedures to verify the performance of the 8003 Precision Scalar Analyzer Appendices A Power Sensors This appendix provides selection data specifications and calibration procedures for powe...

Page 14: ...8003 Precision Scalar Analyzer x Manual 20791 Rev C June 2001 ...

Page 15: ...y corrected or observed could result in injury or death of personnel An example is the proximity of high voltage Caution The CAUTION statement is enclosed with single lines and centered in the page This calls attention to a situation or an operating or maintenance procedure or practice which if not strictly corrected or observed could result in temporary or permanent damage to the equipment or los...

Page 16: ...8003 Precision Scalar Analyzer xii Manual 20791 Rev C June 2001 ...

Page 17: ...ent record of manual change data Corrected replacement pages will be issued as Technical Publication Change Instructions and will be inserted at the front of the binder Remove the corresponding old pages insert the new pages and record the changes here Change Instruction Number Change Instruction Date Date Entered Comments ...

Page 18: ...8003 Precision Scalar Analyzer xiv Manual 20791 Rev C June 2001 ...

Page 19: ...en the accompanying product has been configured for user specific application s supplemental pages will be inserted at the front of the manual binder Remove the indicated page s and replace it them with the furnished Special Configuration supplemental page s ...

Page 20: ...8003 Precision Scalar Analyzer xvi Manual 20791 Rev C June 2001 ...

Page 21: ...0 04 dB linearity and provides an absolute power accuracy of 0 7 at 1 mW In essence the 8003 can be used as an accurate 3 channel power meter 1 1 1 Features Large full color display for easy viewing of traces and quick identification of channels Built in sweeper control for automated setups and easier control of complex measurements Expert system menus that use color to help the operator quickly l...

Page 22: ...e Selection for instructions on how to select the voltage and replace the fuse Observe the following Safety Precautions when installing the 8003 See Section 1 5 for connecting to the rear panel Do not connect main power to the unit until you have checked the required operating voltage and fuse rating The instrument can be damaged if connected to a source voltage with the line voltage se lector set...

Page 23: ...ition and no special installation procedures are required except to check and or set the operating voltage and fuse selection as described in the following 1 2 2 1 Power Sensors The 8003 Series of Power Sensors are designed specifically for use with the 8003 The same sensors are used for both swept measurements and CW measurements Both AC and DC detection modes can be used with any of the power se...

Page 24: ...om the adapter to earth ground Failure to do this could cause the instrument to float above ground posing a shock hazard to personnel The line voltages and fuse ratings are Line Voltage Fuse Rating 100 120 Vac 10 50 60 or 400 Hz 3 0 AMP 220 240 Vac 10 50 60 or 400 Hz 1 5 AMP Verify that the voltage setting and line fuse in the 8003 match the ac power source at your facility before connecting the l...

Page 25: ...n its slot Close the housing cover the appropriate voltage should be visible through the window see Figure 1 2 3 With the housing cover open pull out the small drawer on the right side of the housing it s marked with an arrow and remove the old fuse Replace with a new fuse insert the drawer and close the housing cover see Figure 1 2 1 2 5 Environmental Requirements The 8003A instrument is type tes...

Page 26: ...w the installation instructions in Section 1 2 and the operating instructions in Chapters 2 or 3 1 2 12 Preparation for Reshipment Follow these instructions if it is necessary to return the product to the factory To protect the instrument during reshipment use the best packaging materials available If possible use the original shipping container If this is not possible a strong carton or a wooden ...

Page 27: ... default is green Menus for the softkeys use color Display Resolution 608 x 430 points for each channel Channels Four channels can be used to select and simultaneously display up to three inputs from A B and C in single channel or ratio mode Graph Readout Mode Graph mode displays swept frequency response on the CRT The Readout mode displays the power level at the cursor frequency or CW power level...

Page 28: ...nt can also be displayed Settings Store and Recall Allows up to nine full front panel setups plus a power down last instrument state can be stored and recalled from non volatile memory Limit Lines Horizontal sloped and or single point lines for each trace can be set as go no go data limits Limit lines are stored in non volatile memory Complex limit lines can be entered through the front panel or v...

Page 29: ...A series of sensors and the high power 8032XA series sensors have built in attenuators Therefore the linearity at a particular power level must be modified to apply to the unattenuated sensor Thus for the 8031XA series which have a 6 dB attenuator the linearity specifications will be for 6 dB more power than in the basic 8030XA Series of sensors This is reflected in the scaling at the bottom of Fi...

Page 30: ...th an open and short effectively removes uncertainties due to frequency response of the source sensors and signal splitting device Reflection Accuracy Scalar Accuracy Reflection Bridge Accuracy Figure 1 4 Reflection Uncertainty Relative to Directivity Figure 1 5 Reflection Uncertainty Relative to Source Match 0 10 20 30 40 5 4 3 2 1 0 1 2 3 5 4 Maximum Error dB Directivity 30 dB Directivity 30 dB ...

Page 31: ... 1 05 Return Loss 33 dB Instrument plus Power Sensor Linearity Standard Sensors CW Mode 0 02 dB 0 5 over any 20 dB range from 16 to 70 dBm 0 02 dB 0 dB 0 05 dB dB from 16 to 20 dBm 0 04 dB 1 0 from 16 to 70 dBm Swept Mode 0 03 dB 0 7 over any 20 dB range from 16 to 70 dBm 0 03 dB 0 dB 0 05 dB dB from 16 to 20 dBm 0 06 dB 1 4 from 16 to 70 dBm Low VSWR Sensors 64 to 20 dBm Same as for Standard Sens...

Page 32: ...0 pW DC Detection Zero Drift Typically 2 nW DC Detection in 1 hour at constant temperature after a 24 hour warmup Zero Drift not applicable in AC detection Noise Uncertainty Typically 50 pW at constant temperature measured over a 1 minute interval two standard deviations Cal Factor Correction Manual or automatic correction to power readings to compensate for frequency response variations of the po...

Page 33: ... A private line GPIB is used to connect the analyzer to firmware supported sweepers Programmable Functions All front panel functions except power on off are programmable Interrupts SRQs are generated for the following conditions Power Up Front Panel key pressed Operation complete Illegal command Instrument self test error Limit test failed ...

Page 34: ...th some sweepers to provide synchronization AC Modulation Output Provides the drive to the modulation input on the sweeper or to an external modulator for use in the ac detection mode DAC Output Not Currently Used Bias Output Programmable output voltage used to display a family of curves Voltage Range 10 V Current Compliance Source or sink 150 mA maximum 1 5 2 GPIB Connectors System GPIB Used to c...

Page 35: ...sized Sweep Generators 1 6 2 Operator Integrated The 8003 is compatible with any signal source that meets the following requirements Horizontal Ramp Provides a 0 to 10 V nominal ramp signal Blanking Signal Optional Provides a TTL level during retrace and bandswitching 1 6 3 Modulation AC Detection Mode A square wave is provided by the analyzer to modulate the signal source Frequency 1 kHz nominal ...

Page 36: ...8003 Precision Scalar Analyzer 1 16 Manual 20791 Rev C June 2001 ...

Page 37: ...ions on how to install and interface the instrument before operating it for the first time For purposes of greater reader visibility the display screens will be shown in white and black the product screens are naturally in a black background with color depictions as described in Section 2 3 1 2 2 Front Rear Panel Descriptions This section describes the physical components of the 8003 Scalar Analyz...

Page 38: ...8003 Precision Scalar Analyzer 2 2 Manual 20791 Rev C June 2001 Figure 2 1 8003 Front Rear Panel Components ...

Page 39: ...t this manual a distinction will be made between the front panel hardkeys and the adjacent CRT displays softkeys when their names are used in textual descriptions The hard keys are enclosed in brackets as in DEFINE and OFF in the above paragraph and the softkeys are shown in italics for example SENSORS AC DC Spin Knob The Spin Knob can access and adjust certain parameters as selected through the s...

Page 40: ...Each key when pressed will display a top level menu showing the measurement parameters that can be processed by using the sub menu label options activated by the softkeys Descrip tions for all six keys can be found in Section 2 5 The MEAS key accesses specific functions related to making ratio or comparison measure ments with other selected measurements The SCALE key alters the parameters related ...

Page 41: ...t to a pin diode on which you want to check the attenuation at various bias levels or it could be used to measure the input impedance on a modulator for which you are not sure The bias voltage is programmable from the front panel It is generated by an internal amplified DAC in the range of 10 to 10 Vdc with up to 150 mA current capacity The circuitry is protected by self resetting current limiting...

Page 42: ...OWER Input Connection This is the receptacle for the ac mains power cable Be sure that the instrument is set for the correct power as defined in Section 1 2 4 Cooling Fan and Filter The fan provides the air flow necessary to keep the instrument from overheating Be sure that the filter is kept clean A dirty filter can cause a thermal shutdown of the instrument in the middle of a test routine GPIB P...

Page 43: ...tive bus components This is accomplished with the following keystrokes 1 Press CONFIG in the SYSTEM section of the front panel 2 The menu that next appears will have a softkey labeled GPIB DEVICES Press this key 3 The display will then show the 8003 address and prompt to change the address Enter any desired address 0 through 30 that is not currently being used for another device on the bus The def...

Page 44: ...REMOTE Stop Span Shows the upper limit of the selected frequency range Cursor Frequency Shows the frequency selected for the cursor location on the display Figure 2 2 Display Screen Information Locations Message Area Reference Position Indicators Start Center CW Frequency Cursor Frequency Stop Span Active Entry Area MainTitle Channel Summary Area Channel Titles Softkey Labels Front Panel Function ...

Page 45: ...ea of the display shows any special messages pertaining to the current measurement Active Entry Area Main Titles Shows the function currently being used and the most important parameters of interest associated with that function Channel Summary Area The Channel Summary Area displays the parameters to be used with the designated channel for the current measurement The front panel function keys are ...

Page 46: ...ndicates which sensor is assigned to the channel PATH CAL This PC indication specifies that path calibration data is being subtracted from the swept measurement reading See Section 2 8 2 for a complete description of the use of path calibration Cursor Power Value and Unit Indicates the power value being read at the cursor location on the displayed trace The reading can be in dB or mW units Figure ...

Page 47: ...ngs what Path Cal does for swept readings REL on the display shows that this mode is in use for the measurement See Section 2 10 for use of the REL function MAX or MIN Power Shows whether the MAX or MIN softkey has been selected to read either the maximum or minimum power at the cursor location Power Reading at XXX Frequency Displays the selected maximum or minimum power reading at the cursor loca...

Page 48: ...the current state of the instrument 2 3 2 Channel Function Selection The 8003 four channel capability allows different types of measurements to be taken processed and displayed You define the desired measurement to occur on a specified channel Having multiple channels then allows you to define multiple measurements to occur simultaneously without regard to which sensors the channels are using Two ...

Page 49: ...eadout is more convenient than a graph Because of this the 8003 has two major display modes One of these is the graphic display mode in which swept channel measurements are graphically displayed Summary information for swept measurements is displayed in the channel summary information area CW channel measurements cannot be displayed graphically but can be displayed in the channel summary area The ...

Page 50: ...an be specified on any desired channel to be the ratio of the current measurement data and the trace n measurement data where n is between 0 and 9 inclusive Traces are memorized as 512 points along the frequency axis A title can be specified for each stored trace This allows you to specify in your own words what the memorized trace data represents When a measurement is being ratio ed with a memori...

Page 51: ...that has not been turned off will become the entry channel There must always be an active channel If only one channel is on it cannot be turned off 2 4 2 DEFINE Key DEFINE The CHANNEL DEFINE key defines some of the most basic characteristics of the measurement on the entry channel When DEFINE is pressed the softkey menu structure shown in Figure 2 5 will be entered Each of the primary functions of...

Page 52: ...he channel is changed back into the swept mode the instrument will remember whether or not the channel was using path calibrations or a memorized trace when it was previously in the swept mode and revert to the same state again The entry channel can be placed into either the CW or swept mode at almost any time An excep tion would be when the channel is in the CW mode and displaying the difference ...

Page 53: ...E DEFINE C1 C1 2 C1 5 C1 4 C1 3 C1 1 C1 6 C1 7 C1 8 C1 9 SINGLE SENSOR RATIO DIFF NF CW SWEPT BIAS VOLTAGE A B C RETURN C A C B RETURN B A B C RETURN A B A C RETURN A B C RETURN A B C RETURN C A C B RETURN B A B C RETURN A B A C RETURN DEFINE KEY CW ONLY NOTE The labels in the shaded boxes are for menu identification only Used only with Noise Figure testing ...

Page 54: ...CTION MEAS key accesses specific functions related to making ratio or comparison measurements with other selected measurements When MEAS is pressed softkey menu F1 shown in Figure 2 6 will be displayed Figure 2 6 Function Menus Accessed with the MEAS SCALE Keys F1 F1 2 F1 1 MEAS MEAS MEAS KEY ABS PWR PATHCAL TRACE MEMORY CW OPTION ALL SWEPT ALL CW ALL NF MEAS TRACE N MEAS TRACE N DIPSPLAY TRACE N ...

Page 55: ...oftkey menu will change to menu F1 1 MEAS TRACE N Menu F1 1 Allows you to specify any memorized trace that you wish to ratio with the current trace The entry area of the display will present a prompt to enter the memory location number 0 9 of the stored trace to be ratio ed with the current measurement trace A memorized trace can only be entered through the keypad not by the spin knob When a UNITS...

Page 56: ...f the memorized trace will also be cleared When a number is entered the memorized trace is cleared and the entry area of the display will indicate that the operation was completed CLR ALL TRACES Menu F1 1 Clears all of the memorized traces When a memorized trace is cleared it is replaced with a 0 dBm trace so that it will have no effect if ratio ed with a measurement trace The titles of the memori...

Page 57: ...layed in dB If the measurement is in linear units the reading will be displayed in percentage MAXHOLD and MINHOLD ON OFF Menu F1 2 When either the MAXHOLD ON OFF or MINHOLD ON OFF softkeys is pressed the CW measurement on the entry channel is memorized and displayed as the maxi mum or minimum measurement All future measurements on that channel are then compared with the memorized measurement If th...

Page 58: ... 5 1 2 5 10 and 20 dB DIV AUTOSCALE Menu F2 Causes the 8003 to autoscale the entry channel Autoscale involves setting the scale fac tor the reference level and the reference position to display the entry channel main trace with the highest possible resolution while still fitting the entire trace on the display When AUTOSCALE is pressed the 8003 autoscales the entry channel the parameters are chang...

Page 59: ...pressed it will cause the softkey menu to change to F2 1 REF LEVEL Second Level Menu F2 1 Allows automated setting of the reference level in addition to manual setting The REF LEVEL softkey repeats the manual entry of the reference level as described previously REF CURSOR Menu F2 1 Automatically sets the reference level to the current cursor power level REF MAX Menu F2 1 Changes the entry channel ...

Page 60: ...ble averaging numbers are 1 2 4 8 16 32 64 128 and 256 traces In the CW mode averaging works exactly the same way except that successive CW power readings instead of traces are averaged AVG ON OFF Menu F3 1 Initiates or stops averaging on the entry channel When averaging is off it is the same as if averaging were active with an averaging value of 1 Each measured trace will be dis played This featu...

Page 61: ...spin knob or entered through the numeric keypad Acceptable smoothing values are from 0 1 to 20 Smoothing aperture windows above about 5 will result in the display visibly shifting to the left by an amount depending on the aperture selected This results from the smoothed data being plotted at the beginning of each smoothed segment Fine tuning of devices such as filters can be executed with either t...

Page 62: ...ACE ALPHA CURSOR POS DEFAULT RM LOGO A B C D E F G H I J K L M N O P Q R S T U V W X Y Z SPACE COLOR LABELS TITLE CHANNEL TITLE RETURN FREQ LBL ON OFF TITLE ON OFF CH TTL ON OFF RETURN CHANNEL COLOR GRAT COLOR COLOR INTENSITY RETURN RED DIM BRT GREEN DIM BRT BLUE DIM BRT GRAT RED DIM BRT GRAT GREEN DIM BRT GRAT BLUE DIM BRT RETURN RED GRAT GREEN GRAT LT BLUE GRAT YELLOW GRAT MAGENTA GRAT WHITE GRA...

Page 63: ...the printing of a screen dump of the power meter readouts PLOT ALL Menu F3 3 A standard plot is normally composed of a grid to define the scale alphanumeric labels describing information pertaining to the trace data being presented and the trace itself The PLOTALL softkey causes all of these elements to be printed on the hardcopy in a stan dard 8 1 2 x 11 format If the 8003 has trace data availabl...

Page 64: ...device to be an HP Ink Jet or equivalent LASER PRINT Menu F3 5 Selects the output device to be an HP Laser Jet or equivalent ABORT PRINT Menu F3 5 Stops the printing process at any time Figure 2 9 PLOT 4 Function Hardcopy Printout SEGMENT N CLEAR CLR ALL SEGMENTS DEFINE SEGMENT LMT LNS ON OFF DISP RETURN STRT 4 000 GHz CH2 SW PC CRSR 0 11 dB 0 1 dB T1 REF 0 00 dB 10 000 GHz 2 PLOT ENTRIES ABORT PL...

Page 65: ...eric information describing channel parameters TITLE and frequency labels FRQ LBL will be printed along with the plot of the channel trace configuration SC P1P2 Menu F3 6 Sets usage of the scaling parameters set up on the plotter itself for the hardcopy printout Figure 2 10 is a similar function printout SPECIAL PLOT Menu F3 3 Causes menu F3 8 to display You can then define the channel TRACES LABE...

Page 66: ...ting sequence at any time ED LOGO Menu F3 3 Accesses Menu F3 3A where you can enter your company name or logo when desired The logo will be stored in a non volatile RAM so it will be retained during power down Use of the ALPHA CURS POS and alpha softkeys are similar to those of Menu F3 18 in Figure 2 7 ...

Page 67: ...ed using the numeric keypad and the digits will be shown in the data entry section of the display Appropriate values should also be entered for the remaining columns in the table depending on the type of Limit Lines selected When all of the values for a given segment have been entered the ABORT choice on Menu F3 10 will change to DONE Additional segments can be defined by assigning a new segment n...

Page 68: ... active only in the CW mode This is because swept mode data is always displayed in log arithmic dB or dBm units LOG Menu F3 11 Changes the displayed measurements to dB or dBm as appropriate LINEAR Menu F3 11 Changes the displayed measurements to units of mW or some other dimension of Watts GRAPH READOUT Menu F3 Toggles between displaying the results of a measurement in either graphic or alphanu me...

Page 69: ... When one of the color softkeys shown in menu F3 14 is pressed the color of the entry channel trace and its summary information will change to the color indicated by the softkey label GRAT COLOR Menu F3 13 Choose the color of the display graticule When this softkey is pressed the soft key menu will change to F3 15 When one of the graticule color softkeys shown in menu F3 15 is pressed the color of...

Page 70: ... erased by mistake Note that it is only possible to undo the title if no new letters have been entered after selecting ERR TTL The alpha softkeys have labels of six characters each for selection of characters for the title being edited A cursor in the form of a small square box will be over one of the characters in each alpha softkey label The cursor will be in the same position in each of the alp...

Page 71: ...haracter in the string When the title has been completed the routine is returned to menu F3 12 by pressing the GHZ dB or ENT OFF function key to the right of the numeric keypad If any other key is pressed that forces the instrument to leave the editing of the title such as a function key or a channel selection key the title will be defined and stored as it is at the time the other key is pressed ...

Page 72: ...enu will go blank The active entry area of the display will contain the message Storing Short If the 8003 is controlling the source it will temporarily select a source sweep time suitable for storing the large number of data points needed up to 4096 The short data will be stored in memory as the short path calibration Once this is done the softkey menu will change to offer the option of either goi...

Page 73: ...outside of the original frequency range used for path cal THRU Menu F4 Performs a sensor through path calibration in case it has not already been done on a sensor currently being used or in case it is desired to update the sensor path calibration data cur rently stored in memory THRU brings up Menu F4 2 from where the sensor of interest can be selected A through path calibration is performed and i...

Page 74: ... a sensor it will display a prompt to connect a sensor to the calibrator SENSOR A B or C CAL Menu F4 4 Initiates the calibration of the corresponding sensor While the 8003 is calibrating a sensor a special calibration display will be active see Figure 2 21 This display shows the progress and success of the sensor calibration in progress If the instrument is unable to successfully complete the cali...

Page 75: ...y few minutes ZERO ALL and SENSOR A B and C Menu F4 5 Causes the 8003 to attempt to zero all of its calibrated sensors Pressing SENSOR A SENSOR B or SENSOR C will zero one sensor at a time If a supported sweeper is connected to the analyzer the analyzer will issue an RF OFF com mand via the GPIB to turn the sweeper s RF OFF If using non supported sweepers sweeper cannot be controlled over the Priv...

Page 76: ...hen a marker is set at a particular frequency the marker will be visible on all channel traces The 10 markers available in the 8003 are set by moving the cursor to the desired frequency and then by defining the marker to be at that frequency The FUNCTION CURSOR key provides access to the complete cursor and marker capability of the 8003 When the CURSOR key is pressed and the entry channel is in th...

Page 77: ...sor is on all regular cursor power measurements are made relative to the power level at the cursor When the cursor is turned on it is then possible to move the regular cursor The entry area of the display will indicate both the cursor frequency and the power at the cursor fre quency relative to the power at the cursor frequency for the entry channel The regular cursor fre quency can then be change...

Page 78: ...N DEFINE MRKR N REF CURSOR DEFINE MRKR N CURSOR FREQ MRKR N ON MRKR N OFF CLEAR MRKR N CLEAR ALL MRKRS RETURN SEARCH VALUE SEARCH LEFT SEARCH RIGHT BAND WIDTH MAX MIN FLATNESS RETURN F6 F6 2 F6 1 MEMORY MEMORY MEMORY MEMORY KEY RECALL N STORE N PREV STATE DISPLAY STATUS CLEAR N CLEAR N CLEAR ALL N CLEAR ALL MEM RETURN DISPLAY N DISPLAY CURRENT DISPLAY PREV RETURN NOTE The labels in the shaded boxe...

Page 79: ...is equal to the selected search value When the search has completed the trace will be put on hold The hold can be turned off by pressing any front panel key This hold is provided to allow the trace to be examined in the same state as it was when the search was conducted While in the hold state the entry area of the search was conducted While in the hold state the entry area of the display will sho...

Page 80: ...he maximum or minimum level of the entry channel trace When either key is pressed the cursor capability of the instru ment will be turned on if it is off The regular cursor will be positioned at the requested level MAX and MIN can be done with respect to the regular cursor when the cursor is active FLATNESS Menu F5 1 Automatically displays in dBm the total deviation flatness between the MAX and MI...

Page 81: ...ker CURSOR FREQ Menu F5 2 Moves the cursor Pressing this softkey causes the entry area of the display to indi cate both the cursor frequency and the level at the cursor for the entry channel A prompt will be presented to move the cursor by changing the frequency with either the spin knob or the enter keypad as desired This is the same type of data entry that is allowed when the Cursor key is press...

Page 82: ...ers Another softkey menu will be presented giving you the choice to either clear all markers or to abort When the CLR ALL MRKRS softkey is pressed again all markers will be cleared The entry area of the display will indicate that the markers have been cleared and the routine will return to the DEFINE MRKR N menu F5 If the ABORT CLEAR softkey were pressed the routine would return directly to the DE...

Page 83: ...r of the setup to be recalled When the setup number is entered the stored instrument setup is recalled The entry area will then indicate that the recall is complete and allow the entry of another setup number to recall if so desired This is the same action that takes place when the MEMORY key is pressed It is provided here in case another of the softkeys in the memory menu such as STORE N to store...

Page 84: ...umber of the setup to be displayed is entered the 8003 will stop taking and display ing measurements The measurement area of the display will instead show all of the requested setup s parameters The softkey area will change to offer the option to either continue or abort the routine The setups of the 8003 are displayed on a set screens The CONT softkey indicates to the 8003 when it should replace ...

Page 85: ...at it has completed this task The number of another stored setup to be cleared can then be entered CLEAR ALL N Menu F6 2 Clears all stored setups This does not provide access to clear the current setup or previous state setup Press PRESET to clear the current setup press PRESET twice to clear both the current and the previous setups The softkey menu will change to offer the option of either Cleari...

Page 86: ...ftkey is pressed all of the non volatile memory will be cleared and the instrument will be Preset If the ABORT CLEAR softkey were pressed the routine would return to the CLEAR N soft key menu F6 2 Non volatile memory will not be affected NOTE This action cannot be reversed once accomplished ...

Page 87: ...3 8003 Source Compatibility The 8003 is compatible with a range of sweepers that have an output identify command The analyzer tries to identify the source by sending the output identify commands of all the sweepers with which it is compatible until it gets a response that it recognizes If it gets a response that it recognizes the 8003 will then interrogate the known source to find out its paramete...

Page 88: ...rea of the display will show the current start center or CW frequency depending upon whether the source is in the start stop center F or CW mode respectively A prompt will be displayed to change the frequency if desired and the softkey menu will change to the one illustrated in Figure 2 13 START CENTER and CW These softkeys change the mode and frequency of the source The softkey label that corresp...

Page 89: ...pending upon the mode of operation See the description of the UPD SWP ON OFF softkey section When STOP is pressed the entry area of the display will show the current stop F or CW frequency depending upon whether the source is in the start stop center F or CW mode respectively A prompt will be presented to change the frequency if desired and the softkey menu will change to the menu in Figure 2 14 S...

Page 90: ...e menu on the left in Figure 2 15 POWER The entry area of the display will show the currently defined output power for the source and present a prompt to change the power as desired This is the same type of data entry that is used when the POWER function key is pressed It is pro vided here in case another parameter in the Power key menu is changed and it is then desired to change the power level C...

Page 91: ...esired power sweep stopping power level in dBm FREQ Allows setup of the desired power sweep operating frequency range SWEEP TIME Allows setup of the desired analog sweep time ANALOG DIGITAL Selects either the analog or digital power sweep mode as desired STEP SIZE Allows setup of the digital power sweep step size Sweep Time See the description of the UPD SWP ON OFF softkey section 2 6 4 1 The SOUR...

Page 92: ...l again show the currently defined sweep time Note that this is the same type of data entry that is allowed when the SWEEP TIME function key is pressed The reason for the redundancy is so that it will not be necessary to leave the softkey menu and go to the Source Control function keys to change the sweep time INT SWP TRIGGER This function is not currently implemented ...

Page 93: ...nu SY1 Provides access to a series of sub menus that allow you to specify which sensors will take measurements in the CW mode and what frequency correction factors will be used with the sensors Whenever a channel is taking measurements in the swept mode the 8003 determines the frequency of the signal from the sweep input The instrument will expect the sweep input to be sweeping from 0 V to 10 V wi...

Page 94: ...1 4 SY1 3 SY1 1 SY1 10 SY1 12 SY1 9 ALL FROM SOURCE A FROM SOURCE B FROM SOURCE C FROM SOURCE RETURN ALL AC ALL DC SENSOR A AC DC SENSOR B AC DC SENSOR C AC DC RETURN SERVICE SENSORS AC DC SENSORS CW FREQ CONFIG KEY STANDARD V F RETURN PROP SENSORS OFFSET PULSE SENSORS GPIB DEVICES CAL SWP RAMP SEE CONFIG SERVICE MENUS GPIB ADDRESS PVT BUS ON OFF SOURCE PLOTTER PRINTER ADDRESS NF RETURN PLOTTER AD...

Page 95: ...GA TRONICS FACTORY GIGA TRONICS REP SERVICE CENTER OWNER SITE RETURN CONFIG SY1 20 HOUR MINUTE SECOND DATE MONTH YEAR DONE CONFIG SY1 19 PAGE UP PAGE DOWN FIRST PAGE LAST PAGE ENABLE INPUT RETURN PAGE UP SET TIME CAL LOC PASSWORD PROGRAM EEPROM ENABLE INPUT ABORT SY1 17 SENSOR A EEPROM SENSOR B EEPROM SENSOR C EEPROM RETURN SEE CONFIG SYSTEM MENUS SET CAL SET TIME TEST PATTERN SENSOR EEPROM NF RET...

Page 96: ...ermine the source s CW output frequency as set by the 8003 through the source control keys CORRCTN OFF Menu SY1 2 Accesses menu SY1 6 wherein the correction factor for either all or any individual sensors can be turned off SENSOR OFFSET Menu SY1 Causes menu SY1 7 to appear This menu either clears or enters offsets for the selected sensors When the selected SENSOR OFFSET softkey is pressed the entr...

Page 97: ...the 8003 This will aid in the main taining and servicing of the instrument This softkey causes menu SY1 13 to appear The regular data display will be replaced with a display of the currently defined calibrator output adjustment and the currently defined serial number of the calibrator SET CAL Menu SY1 13 Adjusts the 0 dBm output of the calibrator of the 8003 When this softkey is pressed the softke...

Page 98: ...ftkey is pressed the routine will return to the SET CAL softkey of menu SY1 13 Any changes that may have been made to the calibrator output and or the calibrator serial number and or the password since entering the SET CAL menu will be reversed When the SET CAL softkey menu is displayed it will only be possible to leave the menu and return to regular data display by pressing the ABORT or DONE soft...

Page 99: ... the screen will display the name of the key GRID L S and DOTS L S Menu SY1 16 Replaces the entire display with the indicated display pattern A prompt on the screen will be shown indicating that any key can be pressed to return to the menu When the key is pressed the routine will return to the TEST PATTERN menu SY1 13 with the exception that the indicated pattern will continue to occupy the data d...

Page 100: ...es on the UNITS keys MHz dBm or GHZ dB Enter the new value using the keypad and the appropriate terminator key Subsequent operation of PAGE UP will continue to increment to the last page of data Use PAGE DOWN to return to an earlier page in the sequence FIRST PAGE and LAST PAGE Menu SY1 19 These softkeys directly access the first and last pages respectively of the cali bration data ENABLE INPUT Me...

Page 101: ...M EEPROM enter the password PROGRAM EEPROM The password will then be erased from the sensor EEPROM Future users will be able to change the data in the sensor EEPROM without having to enter a password until one is again defined PROGRAM EEPROM Menu SY1 18 Downloads new sensor calibration information to the sensor EEPROM which will replace all changeable data currently stored in the EEPROM In this re...

Page 102: ...Precision Scalar Analyzer with a supported microwave sweeper a Series 803XXA power sensor and a Series 80500 return loss bridge Configure the analyzer and sweeper according to the instructions in Section B 3 Connect one power sensor to sensor input A Connect the bridge to sensor input B Leave sensor input C disconnected Turn on the sweeper first and then the analyzer The analyzer will perform its ...

Page 103: ...ALIBRATOR You may need to use an adapter to adapt from the sensor connector to the front panel type N f connector Press Function CAL and look at the softkey menu Press CAL SENSOR to bring up a menu of sensors to be calibrated Figure 2 19 CAL Softkey Menu Figure 2 20 Sensor CAL Menu SHORT OPEN THRU CLEAR PTH CAL NF CAL SENSOR ZERO SENSOR CAL KEY Used only with Noise Figure testing CAL CALL ALL SENS...

Page 104: ...tion is very stable and is memorized by the analyzer in non volatile memory so that calibration data is not lost when the analyzer is turned off Once calibrated the sensors should remain in calibration for days However daily calibration is recommended as good measurement practice There are some conditions under which it is advisable to recalibrate the sensors The most common is a significant chang...

Page 105: ...of the analyzer display as well as the frequency display on the sweeper should indicate your new start frequency If the sweeper does not respond to the new Start frequency check that the GPIB cable from the analyzer to the sweeper is properly connected Also check that both the analyzer and the sweeper agree on the sweeper GPIB address see the Sweeper Installation in Section B 3 3 for more details ...

Page 106: ...tion SCALE then press AUTO SCALE The analyzer automatically scales the trace to show maximum vertical variation on the screen The variation on the screen is due to the residual leveling errors from the sweeper as well as frequency variations in the bridge adapters and connectors These variations must all be taken into account when making a component measurement One of the easiest ways to do this i...

Page 107: ... 71 To do a path calibration press Function CAL then press THRU which brings up the F4 2 menu in Figure 2 24 Figure 2 24 THRU PATH Calibration Menu STORE THRU A STORE THRU B STORE THRU C A FULL BND Y N B FULL BND Y N C FULL BND Y N RETURN CAL ...

Page 108: ...a straight line trace The analyzer is now ready for fully corrected accurate insertion loss measurements Remove the power sensor from the bridge Attach a short to the bridge test port Press Channel 2 to make channel 2 the active entry channel Note on the analyzer screen that the box around the channel 1 summary area now moves around the channel 2 summary area to indicate that it is the active chan...

Page 109: ...y Scale the channel 2 return loss trace by selecting it as the active entry channel and pressing AUTO SCALE Insertion and Return loss can be read directly from the display or by using the cursor To activate the cursor press the Function CURSOR key A cross on each trace shows the current cursor position The parameters for the cursor on the active entry channel are read out in the active entry area ...

Page 110: ...lay Figure 2 28 Cursor Plot Typical Display SENSOR B ZERO SENSOR C ZERO SENSOR A ZERO ZERO ALL CAL RETURN STRT 8 000 GHz STOP SCALE FACTOR 10 0 dB DIV CH1 SW A PC 10 dB REF 35 00 dB CH2 B PC 10 dB REF 0 00 dB 12 000 GHz 2 1 CURSOR ON OFF SEARCH CURSOR ON OFF CURSOR FREQ CURSOR RETURN STRT 8 000 GHz STOP CRSR 3 00 dB 6 347 GHz CH1 SW A PC 3 00 dB 10 dB REF 25 00 dB CH2 B PC 2 06 dB 10 dB REF 0 00 d...

Page 111: ...NGLE SENSOR softkey and choose the sensor to be used for that channel A B or C The displayed trace now indicates true or absolute power measured by the sensor An insertion loss measurement typically compares the ratio of the power out of the DUT to the power into the DUT In a single sensor measurement this is normally done by first measuring the swept power into the device and storing that result ...

Page 112: ... choose a channel button press the DEFINE key and choose between single sensor measurements or the ratio or difference between any two sensors By pressing MEAS you can also choose to subtract path cal and or stored trace data from the measurement The channel selection buttons have the secondary function of selecting the Active Entry channel This is indicated by an LED that lights next to the selec...

Page 113: ...tional Coupler shown in Figures 2 31 and 2 32 Power splitters have the advantage of wide frequency range typically from dc to tens of Gigahertz However power splitters typically have an insertion loss of at least 6 dB Directional couplers with an insertion loss typically less than 1 dB are used when insertion loss is a concern However wide frequency coverage is often more difficult and expensive t...

Page 114: ...to sweep and path cal is used the measurement can be very accurate However it does require that the power from the source does not change between path cal and measurement something which may be a problem if the source power changes with load match or if the measurement requires swept power levels such as amplifier 1 dB compression measurements A two sensor ratio can improve the accuracy of an inse...

Page 115: ...ecause of their broad frequency range and very good directivity Figures 2 33 and 2 34 show typical examples of test setups using bridges and couplers In a return loss measurement the bridge or coupler is connected between the sweeper and DUT A power sensor either built into the bridge or attached to the coupler then monitors power reflected back from the DUT The ratio of the power incident on the ...

Page 116: ...all of the sweeper power to be reflected back to be measured by the reflected sensor accounting for bridge or coupler path losses Press CAL and the SHORT OPEN softkey Then press the STORE SHORT X softkey that corresponds to the sensor measuring the reflected power Once the Short cal is done connect an OPEN to the bridge or coupler test port Press the STORE OPEN X softkey to complete the calibratio...

Page 117: ...ncident power with the path cal subtracted then properly indicates return loss Because the two sensor configuration measures return loss directly as a ratio it is insensitive to sweeper power changes As with 2 channel insertion loss measurements press DEFINE followed by the RATIO softkey followed by the sensor measuring reflected power followed by the sensor measuring incident power Path calibrati...

Page 118: ...d measure the golden standard to find its characteristics see Figure 2 37 for an example of golden standard measurement results Ideally you would then like a way of memorizing this trace and subtracting it from subsequent traces on your other DUTs so that you could see how much variation the other DUTs had from the standard That is exactly what trace memory allows you to do To memorize the golden ...

Page 119: ...s you could make all the measurements using the same correct original path calibration Figure 2 37 Golden Standard Precision 20 dB Attenuator Measurement Using 20 dB Attenuator Reference SEGMENT N CLEAR CLR ALL SEGMENTS DEFINE SEGMENT LMT LNS ON OFF DISP RETURN CH2 SW PC CRSR 0 11 dB 0 1 dB T1 REF 0 00 dB PLOT ENTRIES ABORT PLOT STRT 4 000 GHz 10 000 GHz 2 CRSR 4 000 GHz SEG STRT FREQ UPPER LOWER ...

Page 120: ...at a certain level to see how close a device makes or misses its specification limits Figure 2 38 Device Gross Characteristics Filter Skirt Display Figure 2 39 Device Fine Characteristics Filter Pass Band Display CURSOR ON OFF SEARCH CURSOR ON OFF CURSOR FREQ CURSOR RETURN STRT 2 000 GHz STOP CRSR 0 48 dB 6 024 GHz CH1 SW A PC CRSR 0 48 dB 1 0 dB REF 0 00 dB CH2 C A PC CRSR 0 14 dB 0 1 dB REF 0 00...

Page 121: ...change the scale factor per division in dB division with either the spin knob or the number pad The scale factor setting is displayed in the lower left area of the status section for each channel The REF LEVEL softkey allows you to specify the level for the reference line The reference line is the level on the screen which remains fixed during scaling In other words all points on the trace are sca...

Page 122: ...o be the average level of the device characteristic This allows as much of the trace as possible to remain on the screen while scaling 2 10 2 Using the Cursor to Set the Reference Level Sometimes it is very convenient to indicate the desired reference level with the cursor For example you may want to examine the fine detail around a local maximum point you have previously identified with the curso...

Page 123: ...arch functions automate commonly used cursor operations such as min max searches and 3 dB and bandwidth searches 2 11 2 Min Max Search To search for the maximum point on a trace press CURSOR followed by the SEARCH softkey Press MAX to find the maximum point on a trace The power insertion loss return loss at the maximum point is read next to the label CRSR in the active channel s summary area The f...

Page 124: ...inds Minimum Return Loss of a Filter Passband Figure 2 44 MIN Search Finds Max Insertion Loss Point 20 dB Fixed Attenuator CURSOR ON OFF SEARCH CURSOR ON OFF CURSOR FREQ CRSR 14 61 dBm 4 768 GHz CH2 SW B PC CRSR 14 61 dBm 10 dB REF 0 00 dBm 2 CURSOR MRKR N DEFINE MRKR N REF CURSOR CURSOR STRT 2 000 GHz DCSR 4 768 GHz STOP 8 400 GHz CURSOR ON OFF SEARCH CURSOR ON OFF CURSOR FREQ CURSOR RETURN STRT ...

Page 125: ...int If the search is successful the frequency and relative power level are shown in the active entry area The active entry area on the screen shows that the default search value is 3 dB You can change this to any negative or positive value by entering the desired value on the numeric keypad and pressing GHz dB For example Figure 2 46 shows the 30 dB point on a high pass filter sometimes used to de...

Page 126: ...imum of 6 dB of insertion loss in the pass band the search functions will never find the 3 dB point To correct this situation first find the Maximum point in the pass band using the SEARCH and MAX softkeys Press CURSOR to return to the top level softkey menu and press the DCURSOR ON OFF softkey The new reference level will now be the maximum point on the trace and the search function will operate ...

Page 127: ...n find the 3 dB points on the right and left of the maximum and calculate the bandwidth Once the BANDWIDTH softkey is pressed the search level can be changed by simply entering a new value on the numeric entry keypad and pressing GHz dB Figure 2 47 Automatic Bandwidth Movement Very Narrow Bandpass Filter SEARCH RIGHT BAND WIDTH SEARCH LEFT SEARCH VALUE CURSOR RETURN STRT 1 711 GHz STOP SRCH 3 00 d...

Page 128: ...e channel summary area for the active channel and in the cursor frequency area at the bottom of the screen Now use the spin knob to move the cursor away from the cursor delta marker and notice that the relative level and frequency are indicated in the active entry area You can also use the numeric entry keypad to enter an exact frequency offset from the cursor delta marker In Figure 2 48 the curso...

Page 129: ...ose channel 1 is set to measure gain vs input power and channel 2 is set to monitor the output power of the amplifier The cursor SEARCH functions find the point where gain decreases by exactly 1 dB on channel 1 The corresponding output level on channel 2 is the 1 dB compression level of the amplifier Figure 2 49 Cursors Each Channel Tied to Same Frequency Help Finding the 1 dB Compression Point on...

Page 130: ...GHz dB units key A small marker circle will appear at the cursor location Figure 2 50 The cursor can then be moved to set up another marker Markers can be individually turned on and off using the MRKR N ON and MRKR N OFF softkeys The analyzer does not support sweeper generated z axis or intensity markers It does however support sweeper generated amplitude blips since these are amplitude spikes tha...

Page 131: ...s Cal Factor is a correction for its frequency response Cal Factors are precisely measured typically at every 1 GHz by the manufacturer or your Cal Lab and are traceable to the National Institute of Standards Technology NIST All 803XXA series sensors used with the 8003 Analyzer have a table of Cal Factors stored in an EEPROM in the sensor You can examine each sensor s Cal Factor table by pressing ...

Page 132: ...SISTANCE RO K Ohms 2 710 FREQUENCY RESPONSE START FREQ GHz 2 000 FREQUENCY RESPONSE STEP FREQ GHz 1 000 NUMBER OF ITEMS IN FREQ RESPONSE TABLE 17 NUMBER OF SPECIAL FREQUENCY RESPONSE 1 RETURN LOSS START FREQUENCY GHz 0 000 RETURN LOSS STEP FREQUENCY GHz 0 000 NUMBER OF ITEMS IN RETURN LOSS TABLE 0 NUMBER OF SPECIAL RETURN LOSS 0 CAL LOCATION GIGA TRONICS FACTORY CAL DATE MONDAY 25 JUN 2001 16 30 0...

Page 133: ...ake Absolute Power measurements on a channel press MEAS Toggle the ABSPWR PATHCAL softkey until ABSPWR is in light blue and PATHCAL is in dim dark blue All measurements will now be fully corrected with Cal Factor corrections and will be displayed in units of dBm To set up the analyzer to ratio with a path calibration press MEAS and toggle the ABSPWR PATHCAL softkey until PATHCAL is in light blue N...

Page 134: ... actually filtered with a much narrower bandwidth to remove noise In swept mode the sensor input signals use a wide bandwidth for responsiveness to swept inputs 2 12 2 Mixed Mode Measurements The 8003 Analyzer uses a mixture of Swept and CW measurement modes For example you may want to sweep a mixer s RF port and measure its RF and IF responses in swept mode But you might also want to monitor the ...

Page 135: ...ource to go to Press the CW FREQ softkey and the appropriate X CW FREQ softkey where X is the sensor letter Then enter your desired operating frequency on the numeric entry keypad followed by the GHz dB units key see Figure 2 56 Another way to make a Cal Factor correction is by direct entry of Cal Factor This may be necessary if the sensor is user calibrated perhaps with an adapter and the user Ca...

Page 136: ...und on CW meters come in handy These are RELative measurements MAX hold and MIN hold and Averaging Averaging reduces the amount of noise on the signal Most often averaging is used when measuring very low level signals below 40 dBm to reduce the noise fluctuations of the reading The number of averages chosen determines the amount of filtering To add averaging to a CW Power measurement first press t...

Page 137: ... a fixed reference level To use the RELative function first set your desired reference level using the CW Power reading as a guide Then to activate the RELative mode press MEAS and select the CW OPTION softkey Press the RELON OFF softkey to read power relative to the reference level Figure 2 58 Reference Level Corresponding Relative Reading MAXHOLD ON OFF REL ON OFF MEAS SEN A OFFS 0 00 dB FREQ 5 ...

Page 138: ...nd insulated you may still see residual effects of a long hand grasp of the sensor especially when measuring below 55 dBm 2 13 2 Measurement Modes Low level measurements can be made in three modes the CW mode and two SWEPT modes ac and dc detection The mode chosen will impact the characteristics of any low level measurements You may wish to choose different modes for different test requirements 2 ...

Page 139: ... zero the sensor using the method described in the CW mode in Section 2 13 2 1 Although frequent re zeroing is not required since the ac detection is eliminating drift an initial zero is required for accurate absolute power displays Use a slow sweep 1 second to ensure adequate resolution Turn on averaging to reduce signal noise To use averaging first press DISPLAY and select the AVG softkey Turn a...

Page 140: ...er Sweep Sweep Time Analog Digital Power Sweep Mode Analog mode is the default In the Digital mode the Step Size default is 0 1 dB with a range of about 0 01 to 110 dB Digital power sweep dwell time is fixed at 10 msec A linear power sweep measurement can be made using the following keystrokes POWER POWER SWEEP PWR SWP ON OFF toggle ON ANALOG toggle to ANALOG if necessary START POWER enter the des...

Page 141: ...red step size in dBm START POWER enter the desired starting power level in dBm STOP POWER enter the desired stopping power level in dBm FREQ enter the desired frequency If any other measurement modes are accessed it may be necessary to reenter the Power Sweep Mode as described above All of the usual measurements and corrections are possible Ratio Cal Factor Averaging Smoothing Frequency Correction...

Page 142: ...8003 Precision Scalar Analyzer 2 106 Manual 20791 Rev C June 2001 ...

Page 143: ...03 rear panel If you will be controlling the sweeper through the 8003 Analyzer connect the sweeper GPIB interface cable to the GPIB PRIVATE port If you will be controlling the sweeper directly from the system controller connect the sweeper GPIB interface cable to the GPIB SYSTEM port see Figure 3 1 3 2 2 Set the GPIB Address The 8003 Analyzer has a default GPIB address of 4 If you need to change t...

Page 144: ... of high speed CW power measurements and a Pass Through mode for direct communication with devices on the 8003 private bus The 8003 Analyzer uses a simple programming structure consisting of commands called verbs followed by command modifiers Because the 8003 is driven by softkeys these commands do not necessarily follow the same sequence as front panel key strokes However you will find that they ...

Page 145: ...swpt 500 330 Set start frequency 2GHz stop frequency 8 GHz 340 Output level 10 dBm and sweep time 500 ms sweep 350 PRINT 4 SWPF level on turn on RF output 360 SLEEP 8 put in appropriate wait time for sweeper to set up 370 380 These next lines set up display format but are not strictly 390 necessary for data collection over the bus 400 410 PRINT 4 GRAPH graph display mode 420 PRINT 4 SWP 1 scale 1 ...

Page 146: ...on turn on RF output 330 SLEEP 8 put in appropriate wait time for sweeper to set up 340 350 This next line sets up display format but is not strictly 360 necessary for data collection over the bus 370 380 PRINT 4 READOUT power meter display mode 390 400 Zero sensor A before taking a reading 410 420 ON SRQ GOTO Done zeroa exit when zeroing done 430 PRINT 4 ZERO A srq Zero sensor A pull srq when don...

Page 147: ...top 8000 level 10 swpt 500 330 Set start frequency 2 GHz stop frequency 8 GHz 340 output level 10 dBm and sweep time 500 ms sweep 350 OUTPUT 704 SWPF level on turn on RF output 360 WAIT 8 put in appropriate wait time for sweeper to set up 370 380 These next lines set up display format but are not strictly 390 necessary for data collection over the bus 400 410 OUTPUT 704 GRAPH graph display mode 42...

Page 148: ...me for sweeper to set up 350 360 This next line sets up the display format but is not strictly 370 necessary for data collection over the bus 380 390 OUTPUT 704 READOUT make sure that the analyzer is in readout 400 large number display mode 410 420 Zero sensor A before taking a reading 430 440 ENABLE INTR 7 2 enable interrupts from instrument srq s 450 ON INTR 7 GOTO Done zeroa exit from current r...

Page 149: ...s is a unit separator The notation indicates that a field may be repeated In the general syntax format it indicates that the modifier may be repeated The specifier can be either a channel or sensor specifier The type of specifier is particular to the command A channel specifier is a mnemonic that defines the channel for which the command is to be applied In the general syntax form shown above this...

Page 150: ...ll on off on off all point f1 p1 p2 flat f1 p1 p2 f2 slope f1 p1 f1 p3 p4 abs SRQ norm on off avg n scale n ref_pos n ref_lev n items n trace n trace n store_trc clear_trc store_short n linefeed store_open marker n on off clear freq n def_mrkr n freq n curs freq smooth n limit limit n clear uncorr corr ngain on off auto all on off on off all point f1 p1 p2 flat f1 p1 p2 f2 slope f1 p1 f1 p3 p4 PWR...

Page 151: ...IDN ESR KEYEM instrument identification read external status register on off private bus store n recall n 1 2 n 3 4 Trace n Pathcal A B C Calfactor A B C ENR n 1 2 3 4 Trace n Pathcal A B C Calfactor A B C ENR n items n curp srq limit SWPF FIXED SWPS PRINT PLOT start stop level swpt upd freq level opd cd span level swpt upd n n n off on n on off n n pff on on off n n n off on n on off ink paint la...

Page 152: ...ways see the syntax diagram for the specific command for the proper use of this separator 3 3 3 3 us Definition The unit separator us mnemonic is defined as zero or more ASCII white space characters followed by an ASCII semicolon followed by zero or more ASCII white space characters 3 3 3 4 EOL Definition The End Of Line separator EOL mnemonic is defined as zero or more ASCII white space character...

Page 153: ...TON TE0 Extended Talker Function no capability L4 Listener Function Basic listener unaddressed if MTA LE0 Extended Listener Function no capability SR1 Service Request Function complete capability RL1 Remote Local Function complete capability LLO PP0 Parallel Poll Function no capability DC1 Device Clear Function complete capability DT1 Device Trigger Function complete capability C0 Controller Funct...

Page 154: ...s making a measurement on that channel Up to four different voltages may be defined to correspond to the four channels 3 3 6 Sensor Calibration Command Structure CAL Syntax CAL hs Sensor Specifier us modifier EOL Example CAL B srq EOL Specifiers A B or C Modifiers This modifier is to request that a service request be sent upon completion of the Sensor Calibration Modifier name SRQ Modifier Syntax ...

Page 155: ...es the measurement to be made in absolute units non normalized Modifier name MEAS M ABS Modifier Syntax MEAS This modifier defines the measurement to be made in relative units meas data path cal Modifier name NORM N PC Modifier Syntax NORM This modifier turns on a specified channel Modifier name ON Modifier Syntax ON This modifier turns off a specified channel Modifier name OFF Modifier Syntax OFF...

Page 156: ...ddition of the question mark affixed to the end of the SEARCH modifier is a query flag If the query flag is set the measurement will be made and the next time that the 8003 is addressed to talk it will output the value of the cursor as defined by the search request The format of the returned data is described for each type of search request below Modifier name SEARCH SEARCH SCH SCH Modifier Syntax...

Page 157: ...req D ddd Where D is zero to 6 digits The value represents the frequency of the cursor in units of MHZ This value is returned here for confirmation data data D Where D is zero to three digits to the right of the decimal point and three digits to the left The assumed units are dBm or dB depending upon the measurement mode SEARCH MOD LEFT LT FULL Modifier Syntax SCH us LT hs numerical value numerica...

Page 158: ...by host computer and returned here for confirmation Where D is zero to 3 digits to the left of the decimal point The value is returned to the host computer for confirmation SEARCH MOD FLAT FULL Modifier syntax SCH hs FLAT query value returned freq data EOL freq freq D ddd where D is zero to 6 digits The value represents the current cursor frequency in MHz data Finds the curve flatness where flatne...

Page 159: ...eturned freq data EOL freq freq D ddd Where D is zero to 6 digits The value represents the frequency of the cursor in units of MHZ data ddd dd units are dB m Description This modifier qualifies that it is the delta cursor which is to be modified Modifier name DELTA Modifier Syntax DELTA ds state State definition ON delta cursor on Full Syntax CUR hs chan specifier us DELTA state Description This v...

Page 160: ...nsor Specific for Source of Frequency Back Panel Swp Input Sensor Frequency 0 05 GHz Sensor Cal Factor 0 Sensor Offset 0 Sensor Full Band Path Cal Option NO Display Setup Swept Mode Color Intensity Red Green Blue are bright Graticule Color Green Frequency Label ON Title OFF Channel Mode Swept Frequency Parameter A B C A B for channels 1 through 4 Color Cyan Red Yellow Magenta for channels 1 throug...

Page 161: ...set All GPIB addresses Analyzer Source Printers and Plotters Sensor linearity calibrations Trace Memories Path Cal Memories 3 3 10 Disable Private Bus Command Structure DISABLE Syntax DISABLE Related Command ENABLE Description This verb disables the private bus When sent the 8003 private bus becomes inactive An Enable command must be sent or a power down power up cycle must be executed to enable t...

Page 162: ...rdized COMMON external status register query command as defined by IEEE 488 2 1988 When talk addressed after receiving the command the 8003 will output the value of its external status register The return value is defined as follows status EOL Where status is an integer in the range of 0 to 128 The description of the individual bits and their decoding can be found in Section 3 3 32 ...

Page 163: ... 8003 private bus If not supported the range is 1 MHZ to 99 GHZ This modifier defines a POWER LEVEL for the fixed frequency mode of signal source The query flag affixed to the power level modifier queries the value of the power level If set the next time the 8003 is talk addressed it will output the value of the power level in dBm The resolution is 0 01 dBm The format of the returned data is D dd ...

Page 164: ... If the modifier UPD OFF is included once with the above verbs then all subsequent uses of those verbs will change only analyzer frequency parameters Modifier name UPD Modifier syntax UPD hs state State definition ON OFF Send the following commands to modify both the sweeper and analyzer frequencies to 2000 MHz FIXED UPD ON FIXED 2000 Send the following commands to modify only the analyzer frequen...

Page 165: ...tax IDN Example IDN Description This verb is the standardized COMMON identify query command as defined by IEEE 488 2 1988 When talk addressed after receiving the command the 8003 will output a string that identifies itself as the 8003 SNA The return value is defined as follows Giga tronics 8003 0 Software rev Software rev dateEOL Where Giga tronics is the manufacturer s name 8003 is the model numb...

Page 166: ...through 9 Sensor specifiers A B C Pathcal specifiers A B C Calfactor specifiers A B C Trace This refers to the 10 trace memories that can be used for ratio measurements with any channel see Section 2 3 7 on page 2 14 in the OPERATION Chapter of this manual for a complete description Pathcal This refers to the sensor s path calibration memory see Section 2 8 2 under Frequency Response Correction fo...

Page 167: ...e while the key emulation mode is enabled This is done by placing the 8003 in remote remote enable set true and listen addressed This allows the host controller to switch between the true remote state and the local key stroke emulation mode without disabling the key stroke emulation mode The feature is disabled by sending a KEYEM OFF command Although the above method is easy to do and will work no...

Page 168: ...ing limit lines are processed quickly while others such as plotting take a longer time to process It is up to the programmer to make sure that the instrument has digested the key strokes in its buffer before sending new key strokes 3 When given a go to remote command after key stroke emulation the analyzer will wait for the key stroke commands to finish execution before processing any further bus ...

Page 169: ... 200 WAIT 1 always wait before a local command 210 LOCAL 7 send remote enable false 220 WAIT 01 always wait 10 ms after local command 230 240 First set up a limit line with 2 segments 250 OUTPUT 704 LDBC2d4d 4d 260 First half sets up slope limit with 2 GHz start freq 270 and 4 dB upper and lower limits 280 WAIT 1 wait 1 second to process key strokes 290 OUTPUT 704 3d3d 3d 300 Second half sets 3 GH...

Page 170: ...ith key stroke emulation 530 540 OUTPUT 704 KEYEM OFF disable key stroke emulation Figure 3 4 Plot Obtained Using More Complex HP Series 300 Prg Example STRT 2 000 GHz STOP 4 00 GHz CH1 1 GIGA TRONICS Precision Scalar Analyzer Model 8003 Jun 25 2001 16 23 49 CH1 SW A 1 0 dB REF 0 00 dBm ...

Page 171: ...ate in store recall memory n Modifier name STORE Modifier syntax STORE ds numeric value valid numeric values 0 through 9 assumed units no units these are store recall memories Recalls current front panel state from store recall memory n Modifier name RECALL Modifier syntax RECALL ds numeric value valid numeric values 0 through 9 assumed units no units these are store recall memories Description Th...

Page 172: ...he request is for cursor power measured at the cursor frequency the format definition can be found on page 3 31 using the CURP modifier Output Current Data Specifiers Channel Specifiers are 1 2 3 and 4 Output Current Data Modifiers This modifier defines the number of data items to be returned when the measured data is requested for output to the host computer Modifier name ITEMS Modifier Syntax IT...

Page 173: ...a format PASS or FAIL This modifier is to request that the power be measured at the cursor position assumes channel is in swept mode and that the cursor is turned on The data returned will be in the following format cursor data freq data EOL freq F data D where F is a variable field number with three digits to the right of the decimal point in MHZ and D is a variable field number with three digits...

Page 174: ...t Stored Data Examples OUTPUT TRACE 5 OUTPUT PATHCAL A OUTPUT CALFACTOR C Output Stored Data Related Command INPUT Description There are two forms of Output commands One form outputs currently measured data The other form outputs stored data such as Trace memories Path Cal memories and sensor Cal Factor memories These forms have completely different syntaxes but share the same verb Users are cauti...

Page 175: ...Does a plot in the upper left UPL upper right UPR lower left LOWL or lower right LOWR quadrants of the paper Modifier name UPL UPR LOWL or LOWR Modifier syntax UPL UPR LOWL or LOWR Modifier Description Does a special plot of trace only SP_TRACE labels only SP_LABEL or frequencies only SP_FREQ Modifier name SP_TRACE SP_LABEL or SP_FREQ Modifier syntax SP_TRACE SP_LABEL or SP_FREQ Modifier Descripti...

Page 176: ...ogo modifier for CUSTOM plots the Giga tronics logo and date at the top of the plot Modifier name LOGO Modifier Description The def_logo modifier for CUSTOM plots a user defined string instead of the Giga tronics logo Modifier name DEF_LOGO Modifier syntax DEF_LOGO us label where label is an alphanumeric string up to 50 charac ters long Description The plot verb makes various plots of the display ...

Page 177: ...260 PAUSE 270 Plot entire display in lower right hand quadrant 280 OUTPUT 704 PLOT lowr srq 290 GOSUB Wait for srq 300 310 PAUSE 320 Custom plot with trace and frequency readouts only 330 OUTPUT 704 PLOT custom trace 1 freq lb srq 340 GOSUB Wait for srq 350 360 PAUSE 370 Jumparound 380 Custom plot with logo changed 390 OUTPUT 704 PLOT custom grid trace 1 def logo MY COMPANY NAME1234 400 Note that ...

Page 178: ...rature and offset drift correction See the description for the RDTEMP command in Section 3 3 22 Normal CW Mode Trigger mode name TØ This is the analyzer s default power up mode In this mode the analyzer free runs at a relatively slow data rate The mode offers familiar power meter functionality to the user with channel ratioing and differences averaging max and min holds and relative measurements a...

Page 179: ...m the controller This allows precise timing of measure ment events in the system The trigger is the GPIB Group Execute Trigger GET command Note that there are both addressed and universal versions of the GET command so that just the analyzer or all instruments on the bus can be triggered When the trigger is received the analyzer takes a reading on each active channel or n readings if AVG n is spec...

Page 180: ...t power is completely settled before giving the TTL trigger For full TTL handshaking with buffered measurements see the RFT modifier description under the T3 MODIFIERS section on page 3 41 A typical programming example for the Fast TTL Triggered mode is shown on page 3 47 Modifiers Modifiers Common To All Trigger Modes Modifier Description This modifier turns on a specified channel in CW power mea...

Page 181: ... analyzer it takes the current power reading and stores it as a reference Every time the analyzer is talk addressed the instrument will output the difference between the current reading and the stored reference reading in dB Modifier name REL Modifier syntax REL hs state State definition ON OFF Modifier Description SRQ in TØ mode operates slightly differently than SRQ in T2 mode In the TØ mode whe...

Page 182: ...ed readings to the controller The entire buffer for the lowest channel number is sent first followed by the buffer for the next highest channel number and so on until all buffers are sent Each individual data item is separated from the next by a comma and data from the end of one buffer and the beginning of the next is simply separated by a comma Modifier name ITEMS Modifier syntax ITEMS hs numeri...

Page 183: ...t channel number and so on until all buffers are sent Each individual data item is separated from the next by a comma and data from the end of one buffer and the beginning of the next is simply separated by a comma Modifier name ITEMS Modifier syntax ITEMS hs numerical value Valid numerical values Any integer between 1 and 512 Modifier Description The RFT Ready For Trigger modifier provides a full...

Page 184: ...ments allow 1 slow readings with display updates 2 fast free running measurements 3 fast GPIB triggered measurements and 4 fast TTL triggered measurements Single channel reading rates in excess of 300 readings per second are achievable in the fast data modes In addition the fast GPIB and TTL triggered modes both allow the optional use of internal data buffers and bus or hardware handshakes to maxi...

Page 185: ...EASUREMENT SPEED 300 310 Example of zeroing sensor first use only for low level msmts 320 ON INTR 7 GOSUB Zero srq SRQ service routine 330 Srq flag 0 Clear srq flag 340 ENABLE INTR 7 2 Enable interrupts 350 OUTPUT 704 ZERO A srq Zero sensor A assert SRQ when done 360 WHILE Srq flag 0 Endless loop while waiting for zero 370 END WHILE of course program could be doing 380 something else 390 WAIT 1 40...

Page 186: ...unt Tottime Power Readin 960 970 OUTPUT 704 PWR 1 T0 Good housekeeping to return analyzer to 980 standard cw mode to update display 990 WAIT 1 1000 1010 1020 EXAMPLE OF 2 CHANNEL MEASUREMENT IN FAST TRIGGERED MODE 1030 1040 OUTPUT 704 POWER 1 A ON POWER 2 A ON CHAN 3 OFF CHAN 4 OFF 1050 Note that both channels are reading the same sensor A This is just 1060 for convenience in running a demo It is ...

Page 187: ... from the analyzer 1570 OUTPUT 704 OUTPUT 1 Tell analyzer to send buffers 1580 ENTER 704 Buffer a Buffer b 1590 1600 Print buffers 1610 FOR I 1 TO 100 1620 PRINT I Chan A Buffer a I Chan B Buffer b I 1630 NEXT I 1640 1650 OUTPUT 704 PWR 1 T0 Good housekeeping to return analyzer to 1660 standard cw mode to update display 1670 1680 1690 EXAMPLE OF BUFFERED MODE WITH FULL GPIB HANDSHAKE 1700 1710 OUT...

Page 188: ...1990 PRINT I Chan A Buffer a I 2000 NEXT I 2010 2020 OUTPUT 704 PWR 1 T0 Good housekeeping to return analyzer to 2030 standard cw mode to update display 2040 STOP 2050 2060 INTERRUPT SERVICE ROUTINE FOR READING SRQ 2070 Reading srq 2080 Srq flag 1 Set SRQ flag 2090 Status SPOLL 704 Serial poll clears srq 2100 ENABLE INTR 7 2 Re enable interrupts 2110 RETURN 2120 END ...

Page 189: ...y of 20 GHz 260 OUTPUT 720 GC100MZ Step frequency of 100 MHz 270 OUTPUT 720 GD10MS Step dwell time of 10 ms 280 OUTPUT 720 PL0DB Output power level of 0 dBm 290 OUTPUT 720 RF1 Turn the RF on 300 WAIT 3 Wait for the sig gen to set up parameters 310 320 330 MEASUREMENT OF INCIDENT AND OUTPUT POWER DURING DIGITAL STEP SWEEP 340 USING TTL TRIGGER TO MAKE 8003 POWER READINGS 350 360 OUTPUT 704 PWR 1 T3...

Page 190: ...d CW operation at 10 dBm 200 OUTPUT 704 FIXED FREQ 8000 LEVEL ON LEVEL 10 210 WAIT 2 220 230 This next command puts the analyzer in power meter mode displaying 240 power from sensor A on channel 1 250 OUTPUT 704 PWR 1 A AVG OFF 260 WAIT 2 Not necessary but allows number on display 270 280 OUTPUT 704 PWR 1 T2 First set triggered fast cw mode T2 290 WAIT 1 IMPORTANT wait for analyzer to change modes...

Page 191: ...the temperature in degrees Celsius for the sensor 3 3 23 Print Definition Command Structure PRINT Syntax PRINT us modifier EOL Examples PRINT paint SRQ PRINT laser SRQ Modifiers This modifier defines the type of printer to be receiving the raster scan plot as an HP INK JET PRINTER Modifier name INK Modifier Syntax INK Modifier Description This modifier defines the type of printer to be receiving t...

Page 192: ...ster scan mode capturing everything currently on the screen Because the print takes a considerable and variable amount of time to execute it is highly recommended to use the SRQ modifier to tell the controller when the print is finished 3 3 24 Readout Display Definition Command Structure READOUT TEXT TXT Syntax TXT Example READOUT Related Command POWER Description This verb places the 8003 display...

Page 193: ...ures TRACE PATHCAL and CALFACTOR data that will be stored to be used with future measurements Modifiers Specific to 8034XA Series Peak Sensors Only The 8034XA Series Peak Sensors allow measurement of pulsed RF signals Unlike the standard CW sensors the Peak Sensors require a trigger signal The Peak Sensors capture the instantaneous power at the moment of the trigger and hold the value until the ne...

Page 194: ... at the desired point in the pulse Modifier Name TRIG Modifier Syntax TRIG Modifier Description The DLYTRIG modifier puts the Peak Sensor in delayed trigger mode This mode is similar to the one above except that a fixed delay is added after the trigger before the sensor reads the RF pulse power This delay is factory set or can be adjusted by changing a potenti ometer setting on the Peak Sensor cir...

Page 195: ...ate the SHORT CALIBRATION upon the specified Sensor When completed the event complete bit will be set in the external status register and the service request and the external status bits will be set in the instrument status byte Modifier Description This modifier initiates the second part of the SHORT OPEN CALIBRATION Modifier name OPEN Modifier Syntax OPEN EOL Description This verb defines and in...

Page 196: ... represents the next full sweep or n full sweeps if an averaging factor of n is chosen The Output command can capture and return data see the related verb OUTPUT section 3 3 19 for more information If the channel is making a CW measurement and the data returned represents the measured data point the format is dataEOL Current Swept Measurement Syntax SWP hs Channel Specifier ds Sensor Specifier us ...

Page 197: ... CA continuous auto scale on CA continuous auto scale off AUTO auto scale ONCE Modifier Syntax 2 SC ds numerical value valid numerical values 0 1 0 2 05 1 0 2 0 5 0 10 20 Modifier Description This modifier defines the reference position for the measured trace for the 8003 CRT graphic display Modifier name REF_POS RP Modifier Syntax RP ds numerical value valid numerical value 4 bottom of screen 3 n...

Page 198: ...fier is received the 8003 will make the measurement specified for this channel If the number of averages defined for this channel has been satisfied the event complete bit is set in the external status register and the service request and the external status bits are set in the instrument status byte Modifier Description This modifier defines the number of data items to be returned when the measur...

Page 199: ...0 Defines Marker 2 on channel 1 at frequency 3500 MHz SWP 4 DEF_MKR 9 CURSFREQ Defines Marker 9 on channel 4 at the current cursor frequency SWP 2 MARKER 3 ON Turn on Marker 3 SWP 1 MARKER ALL OFF Turn off all markers SWP 3 MARKER 8 CLEAR Clear marker 8 turn off and clear frequency assign ment Modifier Description These modifiers are used to perform an OPEN SHORT bridge calibration with trace memo...

Page 200: ...the trace smoothing function Modifier name SMOOTH Modifier Syntax SMOOTH hs numerical value or state valid numerical values 0 1 to 20 0 assumed units percent of trace resolution in tenths state definition ON OFF Modifier Example SWP 3 SMOOTH 0 5 SMOOTH ON Defines smoothing at 0 5 of full trace turns smoothing on Modifier Description The LIMIT modifier allows GPIB definition of limit lines Limit li...

Page 201: ... Limit Modifier 4 below Limit Modifier 4 SLOPE defines a sloping line segment limit Modifier Syntax SLOPE hs f1 ds p1 ds p2 ds f2 ds p3 ds p4 Argument syntax f1 starting frequency in MHz p1 upper limit in dB starting limit p2 lower limit in dB starting limit f2 ending frequency in MHz p3 ending upper limit in dB p4 ending lower limit in dB Modifier Examples SWP 1 LIMIT 1 POINT 2500 10 5 9 5 Define...

Page 202: ...is valid for CLEAR_TRC TRACE n Programs the specified channel to display memorized Trace n TRACE n Programs the specified channel to be ratio ed with Trace n STORE_TRC n Stores a swept measurement to memorized Trace n CLEAR_TRC n Clears a single measurement of all memorized traces Stored Swept Measurement Examples SWP 1 TRACE 4 makes channel 1 display memorized trace 4 SWP 3 TRACE 7 makes channel ...

Page 203: ...2 310 OUTPUT 704 SWP 2 A on trace 1 320 and scale channel 2 330 OUTPUT 704 SWP 2 scale 5 ref lev 0 340 WAIT 1 wait for analyzer to finish processing display 350 360 Now read trace into controller 370 OUTPUT 704 OUTPUT trace 1 380 ENTER 704 Start freq Stop freq Trace data 390 Note output format is always start freq MHz stop freq MHz then 400 512 data points of trace data in dB 410 420 Invert trace ...

Page 204: ...4 store short 3 SRQ 710 WHILE Srq flag 0 infinite loop waits for srq from analyzer 720 END WHILE 730 740 Srq flag 0 750 BEEP 760 INPUT Connect OPEN to bridge press RETURN Key 770 OUTPUT 704 store open SRQ 780 WHILE Srq flag 0 790 END WHILE 800 810 STOP 820 830 SRQ interrupt service routine 840 Trace srq 850 Srq flag 1 Set srq flag to indicate srq received 860 Status1 SPOLL 704 Serial poll clears s...

Page 205: ... Limit line demonstration 160 OUTPUT 704 SWP 1 limit all clear clear previous limit lines 170 180 Set 3 segments a slope segment point segment and flat segment 190 OUTPUT 704 SWP 1 limit 1 slope 2000 4 4 3000 2 2 200 OUTPUT 704 SWP 1 limit 2 point 3200 1 1 210 OUTPUT 704 SWP 1 limit 3 flat 3400 2 2 4000 220 230 Now turn limit line on 240 OUTPUT 704 SWP 1 limit on 250 260 Read pass or fail status o...

Page 206: ...ifier queries the value of the stop frequency If set the next time the 8003 is talk addressed it will output the value of the stop frequency in MHz The format of the returned data is D dddddd where D is zero to 6 digits and the assumed units are MHZ Modifier name STOP STOP FB FB Modifier Syntax FB hs numerical value numerical value range Dependent upon the signal source if the source is supported ...

Page 207: ...l Factors to the reading take the correct portions of trace memories and path cal memories and fix cursors and markers The update modifier allows independent control of the sweeper frequencies and all other frequency related analyzer functions If the modifier UPD ON is included once with the SWPF SWPS or FIXED verbs then all subsequent uses of those verbs will update the sweeper frequency along wi...

Page 208: ...eeper 890 OUTPUT 704 SWPF UPD ON Tells analyzer to update both sweeper 891 settings and analyzer displays 892 Set sweeper and analyzer to 2 to 4 GHz frequency sweep at 10 dBm 900 OUTPUT 704 SWPF start 2000 stop 4000 level 10 level on 910 WAIT 2 wait for sweeper to update sweep 940 941 BEEP 942 INPUT Press RETURN to set analyzer at different frequency Key 950 Now send analyzer to different start an...

Page 209: ...sumed units are MHz Modifier name CF CF Modifier Syntax CF hs numerical value numerical value range Dependent upon the signal source if the source is supported on the 8003 s private bus If not supported then the range is 1 MHZ to 99 GHZ Modifier Description This modifier defines a span frequency for the center span swept frequency mode of signal source The query flag affixed to the span frequency ...

Page 210: ...iption The update modifier decouples analyzer frequency updates from sweeper frequency updates This is most commonly used when the analyzer and sweeper are set to different frequencies as in mixer or frequency multiplier measurements The analyzer normally uses frequency information to change the operating frequen cies of the sweeper annotate the x axis of the swept display apply correct Cal Factor...

Page 211: ...tion of the Sensor Path Calibration Modifiers name Full Band Narrow Band Modifier Syntax 1 FB NB Modifier name SRQ Modifier Syntax 2 SRQ If the SRQ modifier is received the 8003 will path calibrate the specified sensor When the calibration is complete the event complete bit will be set in the external status register and the service request and the external status bits will be set in the instrumen...

Page 212: ...ates Sensor Zeroing 3 3 32 STATUS MESSAGES 3 3 32 1 488 2 Status Byte The 8003 supports the IEEE 488 2 1988 definition of the STATUS BYTE This status message is returned in response to a serial poll The status message is coded as follows Whenever the value of bit 6 is true the 8003 is requesting service This will generate a service request message SRQ TRUE on the bus The reason for the service req...

Page 213: ...imal address of the GPIB SYSTEM interface Subsequent addressing of the GPIB SYSTEM interface will pass through commands to the selected device The PT d command can be sent at any time The default addresses for pass through commands are as follows The next section explains how to pass through commands to instruments connected to the 8003 GPIB PRIVATE interface most significant bit 15 not used bit 1...

Page 214: ...address is 4 decimal 0100 binary the default GPIB PRIVATE address is 5 decimal 0101 binary As another example if the 8003 address were set to 7 decimal 111 binary the GPIB PRIVATE address would become 6 decimal 110 binary An example of how to pass through commands to the source with address 20 using the 8003 default address 4 decimal is 1 Address device 4 the GPIB SYSTEM interface on the 8003 and ...

Page 215: ...Reference Level given in this section is valid for an ambient temperature range between 15 C and 35 C 59 F to 95 F The instrument plus power sensor linearity test is valid when the sensor has been calibrated using the front panel calibrator at a temperature between 0 C and 50 C 32 F to 122 F and if operating within 5 C 9 F of that calibration temperature It is recommended that the verification be ...

Page 216: ...r 0 to 90 dB Weinshel Model AC 118A 90 33 1 15 SWR 50 MHz 0 1 dB attenuation RF Source Signal Generator High Power Wavetek Model 2405 Option XP 22 dBm 50 MHz Low Pass Filter Integrated Microwave Model 904 881 30 dB attenuation 100 MHz GPIB Controller IBM PC National GPIB Card or equivalent Printer HP LaserJet Series II RS 232 Interface Command Set High Resolution Color Display Monitor Required 60 ...

Page 217: ...nt system is used for verification the power reference oscillator output can be verified to 1 mW 1 9 1 2 accuracy 0 5 verification system error 0 2 transfer error for a maximum error of 1 9 To ensure maximum accuracy in verifying the Calibrator Output power reference the following procedure provides step by step instructions for using specified test instruments of known capability If equivalent te...

Page 218: ...n the DVM as V1 8 Disconnect the DVM negative lead from the VRF connector on the 432A and reconnect it to the 432A chassis ground Record the new indication observed on the DVM as VCOMP 9 Press the ABORT softkey on the 8003 10 Calculate the Calibrator Output level PCAL using the following formula where PCAL calibrator output power reference level VCOMP previously recorded value in Step 8 V1 previou...

Page 219: ...tor 1 Connect the frequency counter to the calibrator output connector 2 Turn ON the calibrator according to the procedure given in Procedure Step 8 on the previous page 3 Measure 49 to 51 MHz 4 Set the calibrator frequency to 1 000 GHz with Option 12 only 5 Measure 999 5 MHz to 1 0005 GHz with Option 12 only 6 Turn the calibrator OFF ...

Page 220: ...he instrument plus power sensor linearity test is valid when the sensor has been calibrated using the front panel calibrator at a temperature between 0 C and 50 C 32 F to 122 F and if operating within 5 C 9 F of that calibration temperature It is recommended that the verification be done in the order described since some of the steps use the configuration from a previous step 4 3 1 Equipment Requi...

Page 221: ... the step attenuator will also have to be considered The specification of power coefficient for the Weinschel attenuator cited in the Equipment List is 0 005 dB dB W The latter will affect the linearity of each 10 dB segment and make it necessary to expand the overall linearity specification by this quantity In assembling the test setup shown in Figure 4 2 keep in mind that if testing is to be con...

Page 222: ...ropriate UNITS soft key labels DISPLAY UNITS LINEAR 5 The CW Averaging is set to 4 by entering the key sequence shown to the left DISPLAY AVG 4 ENTER AVG ON 4 3 2 3 Test Procedure CAL ZERO SENSOR SENSOR A B C ZERO Extreme care is required in the following procedure since the accuracy requirements are critical to ensure the most accurate test results Power readings are determined using the thermist...

Page 223: ...at the thermistor power meter indicates 5 01 mW 0 10 mW 8 Record the new calculated power meter reading and the new displayed 8003 reading as in Step 4 above 9 Repeat using the power meter indications in the data sheet on page 4 15 Note that the Step Attenuator is used to generate the remaining 70 dB range of 10 dB steps for a total range of 80 dB Repeat Step 1 above between each 10 dB step shown ...

Page 224: ...4 GPIB System Port Check The following steps confirm that the GPIB port is functional 1 Set the 8003 to the desired address the default is 4 CONFIG GPIB DEVICES nn ENTER 2 Connect the GPIB controller to the GPIB Port on the rear of the 8003 3 Send the command if emulating an HP 438 IDN or ID The verb is the standardized COMMON identify query command as defined by IEEE 488 2 1988 When talk addresse...

Page 225: ...B DEVICES SOURCE ADDRESS nn ENTER 4 Check that the 8003 recognizes the sweeper by verifying that sweeper dependent softkey selections on the 8003 such as Power are NOT dark blue POWER Softkey labels are green or blue 4 3 6 Sweep in Connector Check 1 Connect the Sweep Out connection from the sweeper to the Sweep In on the 8003 2 Configure the 8003 to be in the Graph Swept Mode DISPLAY GRAPH DEFINE ...

Page 226: ...on the oscilloscope and check that it indicates a positive voltage of 5V 5 Set the 8003 to the AC Mode of operation CONFIG SENSORS AC DC ALL DC 6 Check that the oscilloscope displays a square wave repetition frequency between 500 Hz and 1 5 kHz voltage between 0V and 5V 4 3 8 Bias Output Connector Check The following steps are used to confirm that the Bias Output Voltage connector is functional Th...

Page 227: ...EFINE BIAS VOLTAGE 1 0 S 8 Check that the trace on the oscilloscope moves down 2 divisions 10V from center screen during the sweep and back to center 0V on retrace 4 3 9 DAC Output Connector Check Not Presently Used 4 3 10 RGB Video Output Connector Check Connect the 8003 Op 02 RGB Video Output to the High Resolution Color Display Monitor and display a stable color picture that duplicates the disp...

Page 228: ... Minimum Actual Reading Maximum 0 981 mW 1 019 mW Linearity Data 16 dBm to 20 dBm Step Attenuator Value Power Set Point Power Meter Reading P 8540 DUT Reading R Reference Power Ratio 8540 DUT Reading Ratio Linearity Error 1 Linearity Specification Accumulated Linearity Error2 0 dB 1 00 mW 0 025 mW P1 R1 P1 P2 R1 R2 3 98 mW 0 10 mW P2 R2 1 Same as Lin error above 0 dB 3 98 mW 0 10 mW P1 R1 P1 P2 R1...

Page 229: ...er Ratio 8540 DUT Reading Ratio Linearity Error 1 Linearity Specification Accumulated Linearity Error2 0 dB See Note 3 1 Same as Lin error above 10 dB 1 00 mW 0 025 mW P1 R1 P1 P2 R1 R2 10 00 mW 0 25 mW P2 R2 1 20 dB 1 00 mW 0 025 mW P1 R1 P1 P2 R1 R2 10 00 mW 0 25 mW P2 R2 1 30 dB 1 00 mW 0 025 mW P1 R1 P1 P2 R1 R2 10 00 mW 0 25 mW P2 R2 1 40 dB 1 00 mW 0 025 mW P1 R1 P1 P2 R1 R2 10 00 mW 0 25 mW...

Page 230: ...e Power Set Point Power Meter Reading P 8003 DUT Reading R Reference Power Ratio 8003 DUT Reading Ratio Linearity Error 1 Linearity Specification Accumulated Linearity Error2 0 dB 1 00 mW 0 025 mW P1 R1 P1 P2 R1 R2 3 98 mW 0 10 mW P2 R2 1 Same as Lin error above 0 dB 3 98 mW 0 10 mW P1 R1 P1 P2 R1 R2 5 01 mW 0 13 mW P2 R2 1 1 6 0 dB 5 01 mW 0 13 mW P1 R1 P1 P2 R1 R2 6 31 mW 0 16 mW P2 R2 1 2 7 0 d...

Page 231: ...ing P 8540 DUT Reading R Reference Power Ratio 8540 DUT Reading Ratio Linearity Error 1 Linearity Specification Accumulated Linearity Error2 0 dB See Note 3 1 4 Same as Lin error above 10 dB 1 00 mW 0 025 mW P1 R1 P1 P2 R1 R2 10 00 mW 0 25 mW P2 R2 1 4 20 dB 1 00 mW 0 025 mW P1 R1 P1 P2 R1 R2 10 00 mW 0 25 mW P2 R2 1 4 30 dB 1 00 mW 0 025 mW P1 R1 P1 P2 R1 R2 10 00 mW 0 25 mW P2 R2 1 4 40 dB 1 00 ...

Page 232: ...8003 Precision Scalar Analyzer 4 18 Manual 20791 Rev C June 2001 ...

Page 233: ... tighten the RF connection This can dam age the connector mating surfaces A 2 Power Sensor Selection Standard sensors include the 803XXA Series for CW signals the 80500 Series CW Return Loss Bridges and the 8033XA Series True RMS sensors Giga tronics True RMS sensors are recommended for applications such as measuring quadrature modulated signals multi tone receiver intermodulation distortion power...

Page 234: ...26 dBm 64 to 14 dBm 0 00 dB 14 to 26 dBm 0 1 dB 10 dB 80314A 10 MHz to 40 GHz 64 to 6 dBm 64 to 14 dBm 0 00 dB 14 to 6 dBm 0 2 dB 10 dB 1W CW 80320A 10 MHz to 18 GHz 60 to 30 dBm 30 dBm 1 W 60 to 10 dBm 0 00 dB 10 to 30 dBm 0 05 dB 10 dB Type K m 1 50Ω 127 mm 5 0 in 32 mm 1 25 in 0 23 kg 0 5 lb 1 11 0 01 2 GHz 1 12 2 12 GHz 1 18 12 18 GHz 1 22 18 26 5 GHz 1 36 26 5 40 GHz 80323A 10 MHz to 26 5 GHz...

Page 235: ...epeatability when connecting attenuator to sensor and 3 for attenuator measurement uncertainty and mismatch of sensor pad combination Table A 2 Power Sensor Cal Uncertainties Freq GHz Root Sum of Squares RSS Uncertainties 3 Lower Upper 80301A 80302A 80303A 80304A 80310A 80313A 80314A 80320A 80323A 80324A 80321A4 80330A 80333A 80334A Min 1 1 04 1 64 1 58 1 58 4 54 1 58 1 2 1 20 1 73 1 73 1 73 4 67 ...

Page 236: ...eference during path calibration Dimensions 80501 76 x 50 x 28 mm 3 x 2 x 1 1 8 in 80502 76 x 50 x 28 mm 3 x 2 x 1 1 8 in 80503 19 x 38 x 29 mm 3 4 x 1 1 2 x 2 1 8 in 80504 19 x 38 x 29 mm 3 4 x 1 1 2 x 2 1 8 in Table A 3 Directional Bridge Selection Guide Bridge Selection Guide Model Model Model Model Freq Range Power Range Max Max Max Max Power Power Power Power Power Linearity4 Frequency 8 GHz ...

Page 237: ...rammed settings of various user definable functions have the following defaults whenever there have been no changes made to the settings by the operator during any test routines The default settings are given for the CURSOR SENSOR DISPLAY CHANNEL and SOURCE component parameters Table B 1 8003 Default Settings Function Default Setting CURSOR Cross Cursor OFF frequency at 10000 MHz Delta Cursor OFF ...

Page 238: ...B Reference Position Center Reference Level 0 dB Bandwidth Search Value 3 00 dB Channel Search Level 3 00 dB CW Mode Setup REL OFF Max Hold OFF Min Hold OFF Channel Title OFF Limit Line OFF Modulate Bias Voltage 0 Volt SOURCE Signal Source Mode Start Stop Swept Freq Start Frequency Sweeper Start Frequency or 1 MHz if not controlled by the 8003 Stop Frequency Sweeper Stop Frequency Sweep Time 200 m...

Page 239: ... is made specifically for the 8003 Analyzer and should not be used with other products See Section A 2 1 for the technical specifications and data for the Series 803XXA Power Sensors used with the 8003 Scalar Analyzer To make swept component measurements a scalar analyzer is always used with a swept microwave source sweeper one or more power sensors and a microwave signal splitting device usually ...

Page 240: ...this page and the next B 3 3 1 8003 to Sweeper BNC Connections Connections shown in capital letters are the actual function names printed on the instrument housing on the rear panels FOR Desired Function Sweep Ramp Signal Prevention of Band Switching Glitches AC Detection CONNECT FROM 8003 Analyzer SWEEP IN BLANKING INPUT AC MOD OUTPUT CONNECT TO Giga tronics 12720A RAMP OUT BLANK MARKER OUT Pulse...

Page 241: ...Position 1 2 4 8 16 Setting 0 0 1 0 1 HP 8350 Series or HP 8360 Series HP INTERFACE BUS Press SHIFT LCL 20 dBm dB HP 8340 Series HP INTERFACE BUS Press SHIFT LOCAL 20 kHz msec Marconi 6300 Series SYSTEM Press SHIFT STATUS 2 S_ADDR softkey 20 kHz int Wiltron 6600B Series IEEE 488 INTERFACE Rear Panel DIP Switches set to Position 1 2 4 8 16 Setting 0 0 1 0 1 NOTE If GPIB communication with the Model...

Page 242: ...ardcopies of displayed data and or plots HP PaintJet Printer HP ThinkJet Printer HP LaserJet Family of Printers The installation instructions on the next 3 pages will define the necessary interconnections and address settings for each of these printers and will also describe the RS 232 cable required when using the HP LaserJet family of printers ...

Page 243: ...ar panel DIP switches as shown below NOTE After setting the address the printer must be turned OFF and then ON again Instrument Connector Label To Set Printer Address CONNECT FROM 8003 Analyzer GPIB PRIVATE Press CONFIG GPIB DEVICES softkey PRINTER ADDRESS softkey 1 GHz dB CONNECT TO HP PaintJet Color Graphics Printer GP IB Connector rear panel of printer Set rear panel DIP switches as shown below...

Page 244: ...nts Instrument Connector Label To Set Printer Address CONNECT FROM 8003 Analyzer RS 232 Port rear panel female connection N A Direct Connection CONNECT TO HP LaserJet Family RS 232 N A Direct Connection M M Cable Printer Connection Pin Number Function 1 FG Frame Ground 2 TD Transmit data to the 8003 3 RD Received data from the 8003 7 SG Signal Ground 20 DTR Data Terminal Ready 8003 Connection 1 FG...

Page 245: ...System Configuration Manual 20791 Rev C June 2001 B 9 B 4 4 LaserJet Printer Switch Jumper Location and Settings SW 1 Location and Setting JP 2 Location and Setting ...

Page 246: ...lor format are also defined B 5 1 HP 7550A B 5 1 1 HP 7550A Pen Color Format 8 Pens When pens are formatted as follows the colors will correspond to the 8003 s default display Instrument Connector Label To Set Printer Address CONNECT FROM 8003 Analyzer GPIB PRIVATE Press CONFIG GPIB DEVICES softkey PLOTTER softkey 5 GHz dB CONNECT TO HP 7550A Plotter HP IB Connector The HP 7550A should be set to i...

Page 247: ...er GPIB PRIVATE Press CONFIG GPIB DEVICES softkey PLOTTER softkey 5 GHz dB CONNECT TO HP 7440A Plotter HP IB Connector Set rear panel DIP switches as shown below Pen Number Color Displayed Function 1 Black Giga tronics Logo 2 Red Channel 2 3 Yellow Channel 3 4 Green Grid Title Channel Title and Frequency 5 Cyan Channel 1 6 Blue Not Used 7 Magenta Channel 4 8 Not Used NOTE After setting the address...

Page 248: ... FROM 8003 Analyzer GPIB PRIVATE Press CONFIG GPIB DEVICES softkey PLOTTER softkey 5 GHz dB CONNECT TO HP 7475A Plotter HP IB Connector Set rear panel DIP switches as shown below Pen Number Color Displayed Function 1 Black Giga tronics Logo 2 Red Channel 2 3 Yellow Channel 3 4 Green Grid Title Channel Title and Frequency 5 Cyan Channel 1 6 Blue Not Used NOTE After setting the address the plotter m...

Page 249: ...Address CONNECT FROM 8003 Analyzer GPIB PRIVATE Press CONFIG GPIB DEVICES softkey PLOTTER softkey 5 GHz dB CONNECT TO HP 7475A Plotter HP IB Connector Set rear panel DIP switches as shown below Pen Number Color Displayed Function 1 Black Giga tronics Logo Channel 1 Channel 3 Channel 4 2 Red Channel 2 Grid Title Channel Title and Frequency NOTE After setting the address the plot must be turned OFF ...

Page 250: ...PRIVATE Press CONFIG GPIB DEVICES softkey PLOTTER softkey 5 GHz dB CONNECT TO HP 7090A Plotter HP IB Connector Set rear panel DIP switches as shown below Pen Number Color Displayed Function 1 Black Giga tronics Logo Channel 2 Red Channel 2 3 Yellow Channel 3 4 Green Grid Title Channel Title and Frequency 5 Cyan Channel 1 6 Blue Not Used NOTE After setting the address the plotter must be turned OFF...

Page 251: ...the GPIB connection marked GPIB SYSTEM on the rear panel of the analyzer Be sure that the remote controller is connected only to the GPIB SYSTEM connection as it will not function if connected to the PRIVATE interface For further information see the installation and address setting instructions given on page 3 1 of Chapter 3 REMOTE OPERATION NOTE This is a different GPIB connector than the GPIB PR...

Page 252: ...8003 Precision Scalar Analyzer B 16 Manual 20791 Rev C June 2001 ...

Page 253: ...ROPF 2 61 Calibrating for Power Measurement 2 67 Calibrator Frequency Check 4 5 Calibrator Output Power Reference Level 4 3 Calibrator Verification Procedure 4 3 Case Insensitivity Command Execution 3 10 CHAN CH 3 13 Channel Function Selection 2 12 CHANNEL Controls 2 15 DEFINE Key 2 15 OFF Key 2 15 Channel Titles 2 8 Cleaning 1 6 CLEAR N Softkey CLEAR ALL MEM 2 49 CLEAR ALL N 2 49 CLEAR N 2 49 Com...

Page 254: ...hrough Feature 3 72 GPIB Private Port Check 4 11 GPIB System Port Check 4 10 Graph Readout Display Modes 2 13 H Hints on Simplified Scaling 2 86 HP 7090A HP 7090A Pen Color Format 6 Pens B 14 HP 7440A HP 7440A Pen Color Format 8 Pens B 11 HP 7470A HP 7470A Pen Color Format 2 Pens B 13 HP 7475A B 12 HP 7475A Pen Color Format 6 Pens B 12 HP 7550A HP 7550A Pen Color Format 8 Pens B 10 HP Printer Inst...

Page 255: ...HP 7550A B 10 POWER 3 36 Power Input Fuse Voltage Selector 1 3 POWER Key 2 54 POWER Function Key 2 54 POWER Softkey 2 54 Power Measurements 2 95 Power On 2 14 Power Requirements 1 4 Standard Voltage Selector Fuse Holder 1 5 VDE Type Voltage Selector Fuse Holder 1 5 Power Sensor Precautions 1 3 Power Sensor Selection A 1 Power Sensors 1 3 Directional Bridges A 4 Introduction A 1 Power Sensor Select...

Page 256: ...xample 3 43 TTL Triggered Fast CW Mode Prg Expl 3 47 Disable Private Bus Command Structure DISABLE 3 19 External Status Register Query Command Structure ESR 3 20 Fixed Frequency Source Mode Definition Command Structure FIXED 3 21 GPIB PRIVATE Interface 3 71 Graph Display Definition Command Structure GRAPH GPH 3 23 IEEE GPIB Interface Characteristics 3 11 Input Command Structure INPUT 3 24 Instrume...

Page 257: ...tions 2 82 THRU PATH 3 69 Tools and Test Equipment 1 6 Trace Memory 2 14 2 82 Two Sensor Insertion Loss Measurements 2 77 Single Sensor vs Two Sensor Measurements 2 78 Two Sensor Return Loss Measurements 2 81 U UNITS Softkey 2 32 us Definition 3 10 Using Channels 2 76 Using the Cursor to Set the Reference Level 2 86 Z ZERO 3 70 ZERO SENSOR Softkey 2 39 ZERO ALL and SENSOR A B and C 2 39 ...

Page 258: ...8003 Precision Scalar Analyzers Index 6 Manual 20791 Rev C June 2001 ...

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