Instruction manual

TM 11-6625-3017-14
CONTENTS (Continued)
Page
SECTION 6 CIRCUIT DIAGRAM
Circuit notes 6-1
APPENDICES
APPENDIX A References A-1
B Maintenance allocation B-1
LIST OF TABLES
Table No. 2-1 Frequency ranges 2-4
2-2 Spurious deviations with increasing % a.m. 2-6
2-3 Spurious deviation with increasing a.m. frequency 2-6
2-4 Crystal selection 2-10
2-5 Decibel conversion table 2-15
4-1 Test equipment required 4-4
4-2 F.m. deviation accuracy 4-5
4-3 Modulation depth 4-6
4-4 External modulation 4-7
5-1 Test equipment required for fault location 5-1
5-2 Test equipment required for realignment 5-4
LIST OF ILLUSTRATIONS
Fig. No. 1-1 FM/AM modulation meter, ME-505/U 1-1
1-2 Typical demodulation f.m. frequency response with
internal 15 kHz filter 1-5
1-3 Typical demodulation f.m. frequency response with
internal 200 kHz filter 1-5
1-4 Typical demodulation a.m. frequency response 1-5
2-1 Oscillator transit locking arrangement 2-1
2-2 Front panel controls 2-3
2-3 near panel 2-3
2-4 Typical modulation meter noise levels 2-7
2-5 Frequency spectrum of f.m. stereo signal with 1 kHz
modulating tone 2-11
2-6 Test arrangement for measuring distortion 2-12
2-7 Derivation of composite stereo signal showing
unbalance and phase shift errors 2-13
2-8 Oscillogram of composite signal 2-13
3-1 Block schematic diagram 3-1
3-2 Operation of discriminator 3-2
3-3 Operation of limiter 3-4
3-4 Derivation of standard deviation signal from 400 kHz
oscillator 3-5
4-1 Units and parts location (top) 4-2
4-2 Units and parts location (bottom) 4-3
4-3 Bessel zero measurement 4-5
4-4 F.m. noise measurement 4-7
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