MONTHLY PREVENTIVE MAINTENANCE-continued

TM 11-6625-3056-12

4-6.

MONTHLY PREVENTIVE MAINTENANCE (cont)

Item

Item To Be

No.

Inspected

Procedure

Set RATE SELECT to positions 2 thru 7:

ACTIVITY indicator must remain lit at each position of RATE SELECT (except 0).

Short

Control settings:

Pattern

Correlator

PATTERN

Keep at SHORT

Loop

OPERATION

Keep at 4W

CORRELATOR LOOP

Keep at OPEN

DATA ON/OFF

Keep at ON

RATE SELECT

Keep at O (38.4 kb/s)

DISPLAY SELECT

ERRORS

Keep DATA OUT connected to DATA IN.

Press RESET:

Display must read 0.

Press SINGLE ERROR several times:

Display must advance one count each time SINGLE ERROR is pressed.

Set CORRELATOR LOOP to CLOSED and press RESET:

Display must read 0.

Press SINGLE ERROR several times:

Display must advance one count each time SINGLE ERROR is pressed.

4-5