AN-ARM-109_test_set_calibration_TB11-6625-1636-35_1977.pdf

TB 11-6625-1636-35 Change 1 Official PAUL T SMITH Major General, United States Army The Adjutant General Distribution To be distributed in accordance with DA Form 12-36A, Calibration requirements for AN/ARM-109 * U S GOVERNMENT PRINTING OFFICE 1977 765010/474 *TB 11-6625-1636-35 Paragraph Page SECTION I. 2 2 2 2 3 II. III. INTRODUCTION AND DESCRIPTION Purpose and scope 1 Reporting of technical bulletin improvements 2 Descriptive data 3 General instructions 4 Differences among models 5 EQUIPMENT REQUIREMENTS Equipment required 6 Accessories required 7 CALIBRATION PROCESS Preliminary procedure 8 Negative error 9 Positive error 10 Self-test circuit11 Meter check 12 Input power 13 Rf load 14 Resistance check 15 Final procedure16 3 3 4 4 5 5 5 6 7 7 7 SECTION I INTRODUCTION AND DESCRIPTION 1. Purpose and Scope. This bulletin provides informa- tion for the periodic calibration of Antenna Coupler Test Set AN/APM-109 (fig. 1). It is to be used by personnel trained and qualified in the use of calibration equipment. *This bulletin supersedes TB 11-6625-1636-35/1, 18 July 1968. 1 Figure 1 Antenna Coupler Test Set, AN/ARM-109 2. Reporting of Technical Bulletin Improvements. The reporting of errors, omissions, and recommen- dations for improving this bulletin is authorized and encouraged.Submit reports on DA Form 2028 (Recommended Changes to Publications and Blank Forms) and forward direct to Commander, US Army Electronics Command, ATTN: AMSEL-MA-Q, Fort Monmouth, NJ 07703. 3.Descriptive Data. Antenna Coupler Test Set AN/ARM-109 contains all material required to test the electronic modules of Antenna Couplers CU- 1669/GRC and CU-1658/A. Identification. NomenclatureAntenna Coupler Test Set AN/ARM-109 National stock number 6625-00-627-8592 ManufacturerCollins Radio Company Model number9890H-1 Size Weight Reference b. Specifications. Duty cycle Negative error Positive error TORQUE meter Rf load c. Calibration. Time required Interval 241/2x 131/4 x 22in (622 x 337 x 559 mm) 65lbs(29 4kg) TM 11-6625-1636-15 Continuous, except for TS-2352/U, 5 minutes on and 5 minutes Off -0 212 2 006V +0 100 0 025V 90 2 50 ohms at 30 mHz 2 hours (approx) In accordance with TB 43-180 4. General Instructions. a. Calibration Reporting. (1) Forms, records, and reports required for calibration personnel at all levels are prescribed by TM 38-750. DA Form 2416 (Calibration Data Card) 2 5. Differences Among Models. SECTION II EQUIPMENT REQUIREMENTS are the principle parameter required for performance of the to assist in the selection of alternate equipment, which my be e calibration, activity. Satisfactory performance of alternate verified prior to use. AU applicable equipment must bear evidence of current 6. Equipment Required. Equipment required for performance tests is listed in table 1 and is referenced within the text by common name and item identification number prefixed A. 7. Accessories Required. Accessories required for calibration performance tests are listed in table 2 and are referenced within the text by common name and item identification number prefixed B. Table 1 Equipment Required *The calibration equipment utilized in this procedure was selected from those known to be available at Department of Defense facilities, and the listing by make or model number carries no implication of preference, recommendation, or approval by the Department of Defense for use by other agencies. It is recognized that equivalent equipment produced by other manufacturers may be capable of equally satisfactory performance in the procedure. Table 2 Accessones Required 3 SECTION III CALIBRATION PROCESS 8. Preliminary Procedure It is recommended that personnel familiarize themselves with the entire procedure before performing calibration, a. Position test instrument on its back.d. Insulate unused power cord plug on test b. Remove SB-3100/ARM-109 Power Distributioninstrument Power Distribution Panel. Panel to gain access to power cables.CAUTION c. Connect TS-2354/ARM-109 power cord to 115/Power source must be within 5V rms of Vrms, 400 Hz source. Refer to figure 2 for typical115V, 1 Hz of 400 Hz and waveshape must hookup.be sinusoidal for correct calibration. Figure 2 Typical 400 Hz power application. e. Check zero indicator of the Test instrument METER and adjust if necessary. WARNING HIGH VOLTAGE is used during the performance of this calibration. DEATH ON CONTACT may result if personnel fail to observe safety precautions. NOTE The following paragraphs are divided into subparagraph a, performance check, and subparagraph b, adjustments. When the performance check is within tolerance, do not perform the corresponding adjustment. When the performance check is not within tolerance, perform the corresponding ad- justment before continuing with the calib- ration procedure. When the performance check is not within tolerance and the adjustment cannot bring it into tolerance, the deficiency must be corrected before continuing with the procedure. 9. Negative Error. a. Performance Check. (1) Position the test instrument controls as follows: (a) POWER switch to ON. (b) OFF/SELF-TEST ON switch to ON. (c) FUNCTION switch to 1. (2) Connect electronic voltmeter (A1) to connec- tor J1, pin 33 (fig. 3) and chassis ground using test lead set (B4). 4 10. Positive Error. Figure 3. Test instrument connectors J1 and J4 Figure 4 Negative and positive error adjustment b. Adjustments. (1) Deenergize test instrument and remove TS-2354/ARM-109 from protective case, if not previ- ously removed. (2) Energize test instrument and adjust (R11) (fig. 4) for an indication of +0.100 on the electronic (3) Set the POWER switch to ON and allow 5 minutes for warm-up. (4) The TORQUE meter shall indicate between 0.39 and 0.41. (5) Disconnect amplifier panel from 115V, 400 Hz power source. voltmeter. (R)(6) Reinstall amplifier in test instrument carry- (3) Carefully insert test instrument amplifier in carrying case. 11. Self-Test Circuit. a. Performance Check. ing case. b. Adjustments. No adjustments can be made. (1) Set test instrument POWER switch to OFF. Check for an indication on the TORQUE meter of 0.0 to +0.01 inch ounce (two needle widths is approxi- 12. Meter Check. a. Performance Check. (1) Set test instrument (or Discriminator Panel) in an upright position. mately 0.01 inch ounce). (2) Turn test instrument OFF/SELF-TEST/ON switch to SELF-TEST. (2) Connect meter test set (A3) to the appropriate pin (fig. 3) of connector J4 (common to ground) as shown in table 3. 5 Table 3 Meter Test Settings 13. Input Power. Figure 5 Input power check test setup (2) Adjust Rf power source (A5) to a frequency of 2.000 MHz. (3) Turn the tes instrument CIRCUIT SELEC-t TOR switch to INPUT POWER. (4) Key the rf power source and adjust the output for 70V Rf (50) as indicated by multimeter (A2). (5) The test instrument METER shall indicate between 6 and 8 (4 and 6) scale, divisions. b. Adjustments. (1) Deenergize test instrument and remove TS-2352/ARM-109 from its protective case. (2) Perform steps a (1) through (4) above. (3) Adjust potentiometer indication of 7 (5) on the meter (R) 6 14. Rf load 15. Resistance Check. 16. Final Procedure. 7 8