TM 11-6625-2837-14&P-7 TECHNICAL MANUAL OPERATOR'S ...

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Section 4 TM 11-6625-2837-14&P-7 4-12. OUTPUT LEVEL SWITCHING TIME (Cont’d) PERFORMANCE TESTS 6. Repeat steps 4 and 5 with center frequency set to 1 MHz. _______________________________________________ 4-13A. OUTPUT ACCURACY SPECIFICATION: (for local and remote modes) +1.5 dB to -76 dBm; +2.0 dB to -146 dBm at meter readings between +3 and -6 dB. 10 to 19 dB__________________________5 ms DESCRIPTION: The RF level accuracy for the +10 and 0 dBm ranges is measured with a power meter. For the lower ranges, an IF substitution measurement technique is used. RF level (attenuation) measurements using IF substitution is accomplished by 1) converting the RF output to a low frequency IF signal, 2) offsetting the decrease in RF level (increase in attenuation) by an equal decrease in IF attenuation. This maintains a fairly constant output level at the IF load. The intermediate frequency is selected on the basis of availability of a precision attenuator. Therefore, any variation in output level from an established reference is primarily due to the RF attenuator. 4-7
Section 4 TM 11-6625-2837-14&P-7 4-13A. OUTPUT ACCURACY (Cont’d) EQUIPMENT: PERFORMANCE TESTS Figure 4-4A. Output Accuracy Test Setup Power Meter/Sensor ............................................... HP 435A/8481A Synthesized Signal Generator ............................... HP 8660C/86602B/86631B 40 dB Attenuator..................................................... HP 8491A Option 040 Mixer. ...................................................................... Watkins-Johnson M1J 4 MHz Low Pass Filter............................................ CIRC-Q-TEL FLT/21B- 4-3/50-3A/3B Coaxial Tee............................................................. 1250-0781 (BNC) 50 Ohm Termination... ............................................ HP 11593A 40 dB Amplifier........................................................ (See Figure 1-2) Double Shielded Cables (5 required)...................... HP 08708-6033 Capacitor, 100 #F ................................................... .HP 0180-2207 Resistor, 100 k. ....................................................... HP 0698-7284 Type N-to SMA Adaptor.......................................... OSM 21040 SMA-to-OSM Right Angle Adapter ......................... OSM 219 SMA-to-BNC Adapter (2) ........................................ OSM 21190 10 dB Step Attenuator............................................. HP 355D Option H38 Wave Analyzer........................................................ HP 3581A 4-8
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Section 5 ADJUSTMENTS 5-28A. PHASE
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ADJUSTMENTS 5-28B. PHASE MODULATION
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Section 6 6-1. INTRODUCTION 6-2. Th
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Section 6 Table 6-1. Reference Desi
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Section 6 Reference Designation HP
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TABLE 6-4 (continued) PART NUMBER
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Section 7 7-1. INTRODUCTION 7-2. Th
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Section 7 TM 11-6625-2837-14 & P-7
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CHANGE B (Cont’d) 15. Adjust A16R
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Section 7 TM 11-6625-2837-14 & P-7
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Section 7 TM 11-6625-2837-14 & P-7
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Section 7 TM 11-6625-2837-14 & P-7
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Section 8 TM 11-6625-2837-14 & P-7
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Section 8 TM11-6625-2837-14 & P-7 8
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Section 8 TM 11-6625-2737-14 & P-7
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Section 8 TM 11-6625-2837-14 & P-7
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Section 8 TM 11-6625-2RI7-14 & P-7
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Section 8 TM 11-6625-2837-14 & P-7
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Section 8 TM 11-6625-2837-14-P-7 SE
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Section 8 TM 11-6625-2837-14 & P-7
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Section 8 TM 11-6625-2837-14 & P-7
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Figure 8-6. System Troubleshooting
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SERVICE SHEET 2 (Cont’d) in the d
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Section 8 TM 11-6625-2837-14 & P-7
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Figure 8-8. Main Troubleshooting Bl
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Section 8 TM 11-6625-2837-14 & P-7
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SERVICE SHEET 4 TM 11-6625-2837-14
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Figure 8-10. A7 Mixer Assembly’s
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SERVICE SHEET 5 TM 11-6625-2837-14
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SERVICE SHEET 5 (Cont’d) 1 kHz so
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Figure 8-14. Phase Modulation Secti
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Section 8 TM 11-6625-2837-14 & P-7
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Figure 8-16. Amplifier/Detector Sec
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SERVICE SHEET 7 (Cont’d) a 10 dB
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Section 8 TM 11-6625-2837-14 & P-7
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Section 8 TM 11-6625-2837-14 & P-7
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Figure 8-22. Attenuator Section Sch
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SERVICE SHEET 9 (Cont’d) TM 11-66
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Figure 8-23. A11 Logic Assembly Com
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Section 8 TM 11-6625-2837-14 & P-7
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Section 8 TM 11-6625-2837-14 & P-7
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TM 11-6625-2837-14 & P-7 SECTION IX
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Section IX TM 11-6625-2837-14 & P-7
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Section IX TM 11-6625-2837-14 & P-7
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D-1. General APPENDIX B MAINTENANCE
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Allocation Chart. Subcolumns of col
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SECTION III TOOL AND TEST EQUIPMENT
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PIN: 049778-000
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