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Page Title:
MONTHLY PREVENTIVE MAINTENANCE-continued |
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 TM 11-6625-3056-12
4-6.
MONTHLY PREVENTIVE MAINTENANCE (cont)
Item
Item To Be
No.
Inspected
Procedure
5.
Long
Set controls as follows:
Pattern
PATTERN
LONG
OPERATION
4W
CORRELATOR LOOP
OPEN
DATA ON/OFF
OFF
RATE SELECT
7 (32 kb/s)
DISPLAY SELECT
ERRORS
Use a banana patch cord to connect red (left) DATA OUT to red (left) DATA IN. Use a
banana patch cord to connect black (right) DATA OUT to black (right) DATA IN:
ACTIVITY indicator must not be lit.
Set DATA ON/OFF to ON:
ACTIVITY indicator must light.
Set RATE SELECT to positions 6 thru 1:
ACTIVITY indicator must be lit at each setting of RATE SELECT (except 0).
If ACTIVITY indicator does not light:
Probable cause is (operator correctable):
One or both patch cords defective. Replace.
6.
Short
Set controls as follows:
Pattern
PATTERN
SHORT
OPERATION
Keep at 4W
CORRELATOR LOOP
Keep at OPEN
DATA ON/OFF
OFF
RATE SELECT
Keep at 1 (0.6 kb/s)
DISPLAY SELECT
Keep at ERRORS
Keep DATA OUT connected to DATA IN:
ACTIVITY indicator must not be lit.
Set DATA ON/OFF to ON:
ACTIVITY indicator must light.
4-4
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