Boonton-82AD-cal-051710 电路图.pdf

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1、_ *This bulletin supersedes TB 9-6625-2079-35, 24 July 1989, including all changes. *TB 9-6625-2079-35 DEPARTMENT OF THE ARMY TECHNICAL BULLETIN CALIBRATION PROCEDURE FOR AM-FM MODULATION METER, BOONTON, MODEL 82AD, 82AD/S10, ME-525A, ME-525A/USM AND ME-525U Headquarters Department of the Army, Wash

2、ington, DC 11 June 2004 Distribution Statement A: Approved for public release; distribution is unlimited. REPORTING OF ERRORS AND RECOMMENDING IMPROVEMENTS You can improve this manual. If you find any mistakes or if you know of a way to improve these procedures, please let us know. Mail your letter

3、or DA Form 2028 (Recommended Changes to Publications and Blank Forms) directly to: Commander, US Army Aviation and Missile Command, AMSAM-MMC-MA-NP, Redstone Arsenal, AL 35898-5000. A reply will be furnished to you. You may also provide DA Form 2028 information to AMCOM via e-mail, fax, or the World

4、 Wide Web. Our fax number is DSN 788-6546 or Commercial 256-842-6546. Our e-mail address is 2028redstone.army.mil. Instructions for sending an electronic 2028 may be found at the back of this manual. For the World Wide Web, use https:/amcom2028.redstone.army.mil. Paragraph Page SECTION I. IDENTIFICA

5、TION AND DESCRIPTION Test instrument identification .1 2 Forms, records, and reports .2 2 Calibration description .3 2 II. EQUIPMENT REQUIREMENTS Equipment required .4 3 Accessories required .5 3 III. CALIBRATION PROCESS Preliminary instructions .6 3 Equipment setup .7 4 Input sensitivity.8 4 Displa

6、y meter and audio circuits .9 5 Frequency modulation accuracy.10 6 Amplitude modulation accuracy and frequency response.11 8 Audio frequency response, high-pass, DE-EMPHASIS, low-pass, and 200 kHz filters.12 9 Power supply .13 11 Final procedure .14 12 RadioFans.CN 收音机爱 好者资料库 TB 9-6625-2079-35 2 SEC

7、TION I IDENTIFICATION AND DESCRIPTION 1. Test Instrument Identification. This bulletin provides instructions for the calibration of AM-FM Modulation Meter, Boonton, Model 82AD, 82AD/S10, ME525A, ME525A/USM, and ME-525U. The manufacturers manual and TM 11-6625-3059-24 were used as the prime data sour

8、ces in compiling these instructions. The equipment being calibrated will be referred to as the TI (test instrument) throughout this bulletin. a. Model Variations. None. b. Time and Technique. The time required for this calibration is approximately 3 hours, using the microwave technique. 2. Forms, Re

9、cords and Reports a. Forms, records, and reports required for calibration personnel at all levels are prescribed by TB 750-25. b. Adjustments to be reported are detonated (R) at the end of the sentence in which they appear. When adjustments are in tables, the (R) follows the designated adjustment. R

10、eport only those adjustments made and designated with (R). 3. Calibration Description. TI parameters and performance specifications which pertain to this calibration are listed in table 1. Table 1. Calibration Description Test instrument parameters Performance specifications Input sensitivity Range:

11、 10 mV rms (10 to 520 MHz) Accuracy: 30 mV rms (520 MHz to 1.2 GHz) Dc output Range: 1.00 V dc at 1000 counts on digital display Accuracy: 0.1% Frequency modulation Range: 0 to 300 kHz Deviation Accuracy: 2% of reading (for modulation frequencies of 30 Hz to 100 kHz)1 Amplitude modulation Range: 10

12、to 90% Accuracy: 2% of reading (for modulation frequencies of 30 Hz to 100 kHz)2 Audio frequency response filters and shape factor Range: High Pass 10 Hz Low Pass 3 kHz DE-EMPHASIS 50 s 30 Hz 300 Hz 3000 Hz 15 kHz 120 kHz 200 kHz 75 s 750 s 6 dB/0 ct (reference 1 kHz) Accuracy: All filters except 10

13、 Hz and 200 kHz are three-pole Butterworth filters; DE-EMPHASIS time constant and 3 dB filter frequencies have accuracy of 4% (except 10 Hz is 70.7 kHz. (6) Set synthesized signal generator FM Rate to 10 kHz. TB 9-6625-2079-35 10 (7) Press HIGH-PASS 30 pushbutton. If necessary, adjust synthesized si

14、gnal generator FM Deviation for a TI indication of 100 kHz. (8) Set synthesized signal generator FM Rate to 30 Hz. TI will indicate between 66.3 and 74.7 kHz. (9) Press HIGH-PASS (Hz) 10 pushbutton. (10) Set synthesized signal generator FM Rate to 300 Hz. If necessary, adjust synthesized signal gene

15、rator FM Deviation for a TI indication of 100 kHz. (11) Press HIGH-PASS (Hz) 300 pushbutton. TI will indicate between 66.3 and 74.7 kHz. (12) Press HIGH-PASS (Hz) 10 pushbutton and repeat (10) above for FM Rate of 3 kHz. (13) Press HIGH-PASS (Hz) 3000 pushbutton. TI will indicate between 66.3 and 74

16、.7 kHz. (14) Press HIGH-PASS 10 and LOW-PASS (kHz) 15 pushbuttons. (15) Repeat (10) above for FM Rate of 3.183 kHz. (16) Press DE-EMPHASIS (green pushbutton) and 50 s pushbuttons. TI will indicate between 69.3 and 72.1 kHz. (17) Release DE-EMPHASIS and press LOW-PASS (kHz) 15 pushbuttons. (18) Repea

17、t (10) above for FM Rate of 2.122 kHz. (19) Press DE-EMPHASIS and 75 s pushbuttons. TI will indicate between 69.3 and 72.1 kHz. (20) Repeat (17) above. (21) Repeat (10) above for FM Rate of 212.2 Hz. (22) Press DE-EMPHASIS and 750 s pushbuttons. TI will indicate between 69.3 and 72.1 kHz. (23) Repea

18、t (17) above. (24) Repeat (10) above for FM Rate of 1.0 kHz. (25) Press DE-EMPHASIS and 6 dB/OCT pushbuttons. TI will indicate between 96.0 and 104.0 kHz. (26) Disable outputs and connect equipment as shown in figure 3. (27) Adjust measuring receiver controls as necessary to measure FM modulation wi

19、th PEAK+ DETECTOR. (28) Release TI DE-EMPHASIS pushbutton and press pushbuttons as listed in (a) through (c) below: (a) HIGH-PASS (Hz) to 30. (b) LOW-PASS (kHz) to 3. (c) RANGE to 10. (29) Adjust synthesized signal generator FM Rate to 3.0 kHz and FM Deviation for a 16.5 kHz deviation indication on

20、measuring receiver. TB 9-6625-2079-35 11 (30) TI will indicate between 10.98 and 12.37 kHz. (31) Adjust synthesized signal generator FM Rate to 15.0 kHz and FM Deviation for a 36.0 kHz deviation indication on measuring receiver. (32) Press LOW-PASS (kHz) 15 and RANGE 100 pushbuttons. TI will indicat

21、e between 23.9 and 27.0 kHz. (33) Adjust synthesized signal generator FM Rate to 120.0 kHz and FM Deviation for a 290.0 kHz deviation indication on measuring receiver. (34) Press LOW-PASS (kHz) 120 and RANGE 300 pushbuttons. Record TI indication. (35) Set synthesized signal generator FM to Off. Subt

22、ract TI indication from indication recorded in (34) above. Difference will be between 191 and 216 kHz. (36) Set synthesized signal generator FM to On, and set FM Rate to 200.0 kHz. (37) Set synthesized signal generator FM Rate to 200.0 kHz, and FM Deviation for a 160.3 kHz deviation indication on me

23、asuring receiver. (38) Press LOW-PASS 200 kHz pushbutton. Record TI indication. (39) Set synthesized signal generator FM to Off. Record TI indication. (40) Subtract value recorded in (39) above from value recorded in (38) above. If difference is not between 96.12 and 117.5 kHz, perform b below. b. A

24、djustments. Adjust A10C46 (figure 2) for a TI display indication of 113.4 kHz plus value recorded in (39) above (R). 13. Power Supply NOTE Do not perform power supply check if all other parameters are within tolerance. a. Performance Check (1) Connect multimeter to +15 V TP (figure 4) and chassis gr

25、ound, using two leads. If multimeter does not indicate between +14.95 and +15.05 V dc, perform b below. Figure 4. Boonton, model 82AD - bottom view. TB 9-6625-2079-35 12 (2) Move lead from +15 V TP and connect to -15 V TP (figure 4). Multimeter will indicate between -14.95 and -15.05 V dc. b. Adjust

26、ments. Adjust A6-1 R11 (figure 2) for a +15 V dc indication on multimeter (R). 14. Final Procedure a. Deenergize and disconnect all equipment. b. Annotate and affix DA label/form in accordance with TB 750-25. By Order of the Secretary of the Army: PETER J. SCHOOMAKER General, United States Army Chie

27、f of Staff Official: JOEL B. HUDSON Administrative Assistant to the Secretary of the Army 0410501 Distribution: To be distributed in accordance with the initial distribution number (IDN) 342221, requirements for calibration procedure TB 9-6625-2079-35. Instructions for Submitting an Electronic 2028

28、The following format must be used if submitting an electronic 2028. The subject line must be exactly the same and all fields must be included; however, only the following fields are mandatory: 1, 3, 4, 5, 6, 7, 8, 9, 10, 13, 15, 16, 17, and 27. From: Whomever whomeverredstone.army.mil To: 2028redsto

29、ne.army.mil Subject: DA Form 2028 1. From: Joe Smith 2. Unit: home 3. Address: 4300 Park 4. City: Hometown 5. St: MO 6. Zip: 77777 7. Date Sent: 19-OCT 93 8. Pub no: 55-2840-229-23 9. Pub Title: TM 10. Publication Date: 04-JUL-85 11. Change Number: 7 12. Submitter Rank: MSG 13. Submitter FName: Joe 14. Submitter MName: T 15. Submitter LName: Smith 16. Submitter Phone: 123-123-1234 17. Problem: 1 18. Page: 2 19. Paragraph: 3 20. Line: 4 21. NSN: 5 22. Reference: 6 23. Figure: 7 24. Table: 8 25. Item: 9 26. Total: 123 27. Text This is the text for the problem below line 27. PIN: 051710-000