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*This bulletin supersedes TB 9-6625-2049-35, 15 January 1996.

*TB 9-6625-2049-35

SUPERSEDED COPY DATED 15 JANUARY 1996

DEPARTMENT OF THE ARMY TECHNICAL BULLETIN

CALIBRATION PROCEDURE FOR

SYNTHESIZER/FUNCTION GENERATOR

HEWLETT-PACKARD

MODELS 3325A( ) AND 3325B( )

Headquarters, Department of the Army, Washington, DC

2 January 2001

Approved for public release; distribution is unlimited

Paragraph

Page

SECTION

I.

IDENTIFICATION AND DESCRIPTION

Test instrument identification............................

1

2

Forms, records, and reports................................

2

2

Calibration description .......................................

3

2

II.

EQUIPMENT REQUIREMENTS

Equipment required............................................

4

4

Accessories required ...........................................

5

5

III

CALIBRATION PROCESS

Preliminary instructions.....................................

6

6

Equipment setup.................................................

7

6

Harmonic distortion............................................

8

7

Amplitude modulation distortion........................

9

9

Square wave characteristics ...............................

10

9

Ramp retrace.......................................................

11

10

Frequency accuracy ............................................

12

11

Phase increment .................................................

13

13

Sine wave amplitude and flatness ......................

14

14

Square wave amplitude and flatness..................

15

16

REPORTING OF ERRORS AND RECOMMENDED IMPROVEMENTS

You can help improve this publication. If you find any mistakes or if you
know of a way to improve the procedure, please let us know. Mail your letter
or DA Form 2028 to: Commander, U. S. Army Aviation and Missile
Command, ATTN: AMSAM-MMC-LS-LP, Redstone Arsenal, AL 35898-5230.
A reply will be furnished to you. You may also send in your comments
electronically to our e-mail address:

[email protected]

or by FAX (256)

842-6546/DSN 788-6546

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Summary of Contents for 3325A

Page 1: ...red 5 5 III CALIBRATION PROCESS Preliminary instructions 6 6 Equipment setup 7 6 Harmonic distortion 8 7 Amplitude modulation distortion 9 9 Square wave characteristics 10 9 Ramp retrace 11 10 Frequency accuracy 12 11 Phase increment 13 13 Sine wave amplitude and flatness 14 14 Square wave amplitude and flatness 15 16 REPORTING OF ERRORS AND RECOMMENDED IMPROVEMENTS You can help improve this publi...

Page 2: ...h Voltage Output Option E04 includes Options 001 002 and instrument front handles and chassis slides Option 907 Front Handle Assembly Option 908 Rack Mount Flange Kit Option 909 Rack Mount Flange Kit Front Handle Assembly Option 910 Additional Operating and Service Manual Variations among models are described in text tables and figures b Time and Technique The time required for this calibration is...

Page 3: ...race time positive or negative ramps Frequency Accuracy 5 x 10 6 of selected value Sine wave Range 1 µHz to 20 999 999 999 Hz option 002 02 Hz to 25 6 kHz Square wave Range 1 µHz to 10 999 999 999 Hz option 002 02 Hz to 25 6 kHz Triangle Range 1 µHz to 10 999 999 999 Hz option 002 02 Hz to 10 kHz Positive slope ramp Range 1 µHz to 10 999 999 999 Hz option 002 02 Hz to 10 kHz Negative slope ramp Ra...

Page 4: ...e output Range 4 mV to 40 V p p 500Ω Accuracy 2 of full output for each range at 2 kHz Flatness 10 of programmed amplitude Dc offset Range 5 V dc Accuracy 0 4 of full peak output for each attenuator range2 Dc offset option 002 Range 20 V dc Accuracy 1 25 mV of full output for each attenuator range Dc plus ac Range 1 MHz Accuracy 1 2 Ramps 2 4 Range 1 MHz Accuracy 3 1Not verified below 50 Hz 2Excep...

Page 5: ...1 MEASURING RECEIVER Frequency 100 kHz to 10 MHz Volts 683 to 732 V rms Accuracy 0 85 AM 0 to 80 Consisting of Measuring receiver Hewlett Packard Model 8902A and Sensor module Hewlett Packard Model 11722A MULTIMETER Range 20 225 to 20 225 V dc Accuracy 0 05 Range 0 3416 to 20 4 V ac 100 Hz to 100 kHz Accuracy 0 3 Hewlett Packard Model 3458A OSCILLOSCOPE Frequency 1 kHz to 10 MHz Amplitude 1 8 to 2...

Page 6: ...through 19 Do not perform power supply check if all other parameters are within tolerance e Unless otherwise specified all controls and control settings refer to the TI 7 Equipment Setup WARNING HIGH VOLTAGE is used or exposed during the performance of this calibration DEATH ON CONTACT may result if personnel fail to observe safety precautions REDUCE OUTPUT S to minimum after each step within the ...

Page 7: ...er 1 9 MHz using TI DATA keys Adjust spectrum analyzer controls to display 1 9 MHz fundamental and at least four harmonics All harmonics will be at least 40 dB below fundamental 7 Enter 190 kHz using TI DATA keys Adjust spectrum analyzer controls to display 190 kHz fundamental and at least four harmonics All harmonics will be at least 60 dB below fundamental 8 Enter 100 kHz using TI DATA keys Adju...

Page 8: ...RY FREQ c 25 kHz d ENTRY AMPTD e 40 VOLT 17 Adjust spectrum analyzer controls to display 25 kHz fundamental and at least four harmonics All harmonics will be at least 65 dB below fundamental 18 Press ENTRY FREQ key and enter 190 kHz using DATA keys Adjust spectrum analyzer controls to display 190 kHz fundamental and at least four harmonics All harmonics will be at least 60 dB below fundamental 19 ...

Page 9: ...own in figure 2 Figure 2 AM distortion equipment setup 3 Set audio analyzer for a 50Ω SPCL 75 10 kHz 2 5 V output 4 Set measuring receiver to measure AM 5 Adjust audio analyzer level until measuring receiver indicates 80 6 Set audio analyzer to measure distortion in dB Audio analyzer indication will be 30 dB 7 Press TI blue key then DATA AM OFF key b Adjustments No adjustments can be made 10 Squar...

Page 10: ... will be 5 percent of peak to peak amplitude 500 mV at positive and negative peaks 9 Perform 10 through 12 below for option 002 only 10 Set oscilloscope CH 1 COUPLING 50Ω Ω to OFF 11 Press TI SIGNAL key on lit 12 Repeat technique in 6 through 8 above Rise time and fall time will be 125 ns with an overshoot 10 percent of peak amplitude 500 mV at positive and negative peaks b Adjustments No adjustme...

Page 11: ... indicate between 19 99990 and 20 00010 MHz perform b below 5 Press FUNCTION square wave key Frequency counter will indicate between 9 999950 and 10 000050 MHz 6 Disconnect frequency counter from TI SIGNAL 7 Connect frequency counter CHANNEL A to TI SYNC OUT 8 Press TI FUNCTION triangle key 9 Set frequency counter controls to measure period Frequency counter will indicate between 99 99950 and 100 ...

Page 12: ...ine wave b ENTRY FREQ c 60 MHz 4 Adjust REF R30 fig 3 until frequency counter indicates 60 000000 MHz R Figure 3 Test instrument bottom view 5 Disconnect frequency counter from TI rear panel AUX 21 60 MHz 6 Connect frequency counter CHANNEL A to TI SIGNAL 7 Enter 20 MHz using DATA keys Frequency counter will indicate between 19 99990 and 20 00010 MHz 8 Disconnect frequency counter from TI 9 Perfor...

Page 13: ...ff option 002 not lit b FUNCTION sine wave c ENTRY FREQ d 100 kHz e ENTRY AMPTD f 13 dBm 2 Connect equipment as shown in figure 4 Figure 4 Phase increment equipment setup NOTE If TI has option 001 remove the connection from 10 MHz OUTPUT to EXT REF IN rear panel fig 4 3 Set synthesizer level generator frequency to 1 MHz and amplitude to 13 dBm 4 Set frequency counter controls for time interval A t...

Page 14: ...e between 272 22 and 283 34 ns 13 Enter 100 deg using DATA keys 14 Press frequency counter RESET pushbutton and record frequency counter indication 15 Determine the difference between indication recorded in 6 above and indication recorded in 14 above The difference will be between 2722 22 and 2783 34 ns b Adjustments No adjustments can be made 14 Sine wave Amplitude and Flatness a Performance Chec...

Page 15: ... possible to 0 707 V ac 7 Enter 100 kHz using DATA keys Multimeter will indicate between 0 683 and 0 732 V ac Record multimeter indication 8 Disconnect multimeter and 50Ω feedthrough termination from TI NOTE If necessary ZERO and CALIBRATE measuring receiver and sensor module 9 Connect measuring receiver sensor module to TI SIGNAL 10 Set measuring receiver to measure volts at 1 MHz 11 Press ENTRY ...

Page 16: ...ss keys and enter values using DATA keys as listed in a through i below a SIGNAL off option 002 not lit b ENTRY DC OFFSET c 0 VOLT d FUNCTION square wave e ENTRY AMPTD f 5 V RMS g ENTRY FREQ h 100 Hz i AMPTD CAL 3 Multimeter will indicate between 4 95 and 5 05 V ac 4 Enter 1 kHz using DATA keys Multimeter will indicate between 4 95 and 5 05 V ac 5 Enter 100 kHz using DATA keys Multimeter will indi...

Page 17: ...keys and repeat 12 above 14 Enter 5 MHz using DATA keys and repeat 12 above 15 Enter 10 MHz using DATA keys and repeat 12 above b Adjustments No adjustments can be made 16 Triangle and Ramp Amplitude a Performance Check 1 Connect TI SIGNAL to multimeter INPUT HI and LO using 50Ω feedthrough termination 2 Press keys and enter values using DATA keys as listed in a through i below a SIGNAL off option...

Page 18: ...erformance Check 1 Connect TI SIGNAL to multimeter INPUT HI and LO using 50Ω feedthrough termination 2 Press SIGNAL key off option 002 not lit 3 Press presently active FUNCTION key to remove ac output and activate ENTRY DC OFFSET key lit 4 Enter 5 VOLT using DATA keys and press AMPTD CAL key 5 Multimeter will indicate between 4 98 and 5 02 V dc 6 Enter 5 VOLT using DATA keys Multimeter will indica...

Page 19: ...ter 20 VOLT using DATA keys Multimeter will indicate between 19 775 and 20 225 V dc 11 Enter 20 VOLT using DATA keys Multimeter will indicate between 19 775 and 20 225 V dc b Adjustments No adjustments can be made 18 Dc Offset with Ac a Performance Check 1 Connect SIGNAL to multimeter INPUT HI and LO using 50Ω feedthrough termination 2 Press keys and enter values using DATA keys as listed in a thr...

Page 20: ...ng DATA keys Multimeter will indicate between 4 35 and 4 65 V dc 10 Press FUNCTION triangle key and enter 9 9 kHz using DATA keys 11 Multimeter will indicate between 4 44 and 4 56 V dc 12 Press FUNCTION positive ramp key Multimeter will indicate between 4 38 and 4 62 V dc b Adjustments No adjustments can be made 19 High Voltage Output Option 002 only a Performance Check 1 Connect SIGNAL to multime...

Page 21: ...Press FUNCTION positive ramp key and repeat 9 above b Adjustments No adjustments can be made 20 Power Supply NOTE Do not perform power supply check if all other parameters are within tolerance a Performance Check 1 Connect multimeter INPUT HI to 15 V TP fig 5 and LO to ground side of C9 fig 5 Adjust R22 fig 5 for a multimeter indication of 14 97 to 15 03 V dc R 2 Connect multimeter INPUT HI to 15 ...

Page 22: ...adjusted out of tolerance by 8 through 11 below This is not a cause for concern 8 Adjust R40 fig 3 until digital multimeter indicates less than 5 mV dc R 9 Connect multimeter INPUT HI and LO to TI SIGNAL Do not use 50Ω feedthrough termination 10 Enter 5 VOLT using DATA keys 11 Press AMPTD CAL key Adjust R22 fig 5 until multimeter indicates 10 000 V dc 12 Enter 5 VOLT using DATA keys 13 Multimeter ...

Page 23: ...ERIC K SHINSEKI General United States Army Chief of Staff JOEL B HUDSON Administrative Assistant to the Secretary of the Army 0029703 DISTRIBUTION To be distributed in accordance with IDN 342200 requirements for calibration procedure TB 9 6625 2049 35 PIN 052316 000 ...

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