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 TM 11-6625-3056-12
2-5.
SELF-TEST
Purpose
To ensure proper operation of the TS-3981 at the start of each day's testing.
Coverage
All circuits are checked except the monitor outputs (SCOPE, SYNC, FREQ MON, and
ERRORS).
Equipment
Banana patch cords (2 ea), 6 in. minimum length patch cords terminated in banana
Required
plugs (field wire may be substituted).
1.
Power
Connect TS-3981 to a source of power and set POWER to ON:
Green POWER indicator must light.
2.
Long
Set controls as follows:
Pattern
PATTERN
LONG
OPERATION
4W
CORRELATOR LOOP
OPEN
q
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 remain lit at each position of RATE SELECT (except 0).
2-6
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