Monitoring.

Monitoring.

OSCILLOSCOPE MONITOR (BLACK) S1A and OSCILLOSCOPE MONITOR (RED)

(1)

S1B. This dual concentric rotary switch receives a total of 17

pulsed or varying system monitor signals from LRU-1 jack J7,

connected through cable W1 to jack J1 on the status panel. The

switch also receives the BTS VIDEO 1 (J7) from RF Modulation

Assembly 1A4 and BTS VIDEO 2 (J8) from RF Modulation Assembly 1A3.

The rotary switch black knob switches CHAN 1 connector J4 to one of

17 points in LRU-1 or to BTS VIDEO J7. The rotary switch red knob

switches CHAN 2 (J5) to one of 17 points in the UUT or the BTS

VIDEO J8.

DET VIDEO/UUT SIGNAL S3. This toggle switch selects either the de-

(2)

tected video from CR1 in the RF path or the signal being monitored

by OSCILLOSCOPE MONITOR (BLACK) S1A and directs it to CHAN 1 con-

nector J4.

VOLTAGE MONITOR S2. Nine DC voltages from the low voltage power

(3)

supply in LRU-1 are connected through LRU-1 J7, Cable W1, to status

panel jack J1. The voltages are selectable by VOLTAGE MONITOR

Switch S2 on the front panel for measurement with an external digi-

tal multimeter connected to V MON J6.

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