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TEST POINT MEASUREMENTS
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TM-11-5805-387-34-2 Modem Radion Teletypewriter MD-522A/RC (NSN
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TEST POINT CHART 1 (CONT)
TM 11-5805-387-34-2
TEST POINT CHART 1
MODULE UNDER TEST
TEST EQUIPMENT
TEST POINT
MODEM SWITCH SETTING
INDICATION
1 RECEIVE AUDIO MODULE A1
AN/URM-145 OR ME-26B/U, AB/USM-207
1. AF INPUT- A1J1
VOICE or 85 HZ + VOICE
1,000 Hz
2. RCVR MIXER INJ - A2J2
850 HZ
3,805 Hz - 5,805 Hz,
varied by BFO control
85 HZ DIVERSITY
2,380 Hz 2Hz
3. +20V REG - A2J1
Any setting
+20 volts dc 2VDC
2 SCOPE MODULE A2
TS-799A/UGM-1
NOTE
Test cable No. 3 must be connected and MESSAGE TRANSMIT SWITCH of TS-799A/UGM-1 must
be ON. Key microphone to obtain waveshapes shown below.
No test point, observe modem CRT
MODE SELECTOR switch: 850 HZ
ONE WAY/DUPLEX switch: DUPLEX
MODE SELECTOR switch: 85 HZ
ONE WAY/DUPLEX switch: DUPLEX
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