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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 3
TM 11-5805-387-34-2
TEST POINT CHART 2
TEST POINT
MODEM INPUT
MODEM SWITCH SETTING
INDICATION
1.
Chassis
No input needed.
ON/OFF switch: ON
22.0 volts dc
terminal
0.5
E22
2.
Chassis
No Input needed.
ON/OFF switch: ON
20.0 volts dc
terminal
0.5
E23
3.
FL1-1
Test cable No. 3
MODE SELECTOR: All 85-HZ modes
12 mv rms 2
connected.
4.
FL1-2
Test cable No. 3
MODE SELECTOR: All 85-HZ modes
3.5 mv rms 1.5
connected.
5.
FL1-3
Test cable No. 3
MODE SELECTOR: 85 HZ
15 mv rms 4
connected.
DIVERSITY
6.
FL1-4
Test cable No. 3
MODE SELECTOR: All 85-HZ modes
3.5 mv rms 1.5
connected.
7.
FL2-1
Test cable No. 3
MODE SELECTOR: 850 HZ
15 mv rms 4
connected.
8.
FL2-3
Test cable No. 3
MODE SELECTOR: 850 HZ
3 mv rms 1
connected.
9.
FL3-1
1 kHz, 200 mv signal
MODE SELECTOR: 85 HZ + VOICE
125 mv rms 25
at J3-J.
10. FL3-3
1 kHz, 200 mv signal
MODE SELECTOR: 85 HZ + VOICE
140 mv rms 35
at J3-J.
NOTE
FL4 measurements made with module A4 removed from chassis.
11. FL4-1
2,805 Hz, 2.45 volts rms
MODE SELECTOR: 85 HZ
2.45 volts rms
at J1-A.
DIVERSITY
12. FL4-2
2,805 Hz, 2.45 volts rms
MODE SELECTOR: 85 HZ
2.0 volts rms
at J1-A.
DIVERSITY
0.4
13. FL4-3
425 Hz, 2.45 volts rms
MODE SELECTOR: 85 HZ
3.0 volts rms
at J1-A.
DIVERSITY
0.6
14. FL4-4
425 Hz, 2.45 volts rms
MODE SELECTOR: 85 HZ
2.6 volts rms
at J1-A.
DIVERSITY
0.5
15. FL5-1
1 kHz, 1-volt rms signal
MODE SELECTOR 85 HZ + VOICE
900 mv rms
at J1-A.
100
16. FL5-3
1 kHz, 1-volt rms signal
MODE SELECTOR: 85 HZ + VOICE
1.0 volt rms
at J1-A.
0.2
17. FL6-1
425 Hz, 2.45 volts rms
MODE SELECTOR: 85 HZ
200 mv rms 40
at J1-A.
DIVERSITY
18. FL6-3
425 Hz, 2.45 volts rms
MODE SELECTOR: 85 HZ
at J1-A.
DIVERSITY
3-20

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