TM 11-6625-2398-15-2
(p) Set AZIMUTH DATA SYNC/R SLVR
following test equipment is required: Multimeter TS-352B
/ U.
switch 1A1A1S6 to SYNC position and set AZIMUTH
DATA FREQ SELECT switch to 400 Hz.
(2) Procedure.
(q) Repeat steps (b), (c), and (e) above.
(a) Connect interface adapter unit 1A1A1 to a
115 vac 11.5 vac, 60-Hz power source.
d. Antenna and Azimuth 60-Hz Data Circuit.
(1) Test equipment and materials. The
(b) Set controls on interface adapter unit
1A1A1 to positions listed below.
Control
Position
AZIMUTH DATA FREQ SELECT switch 1A1A1S5 .................................................................. 4000 HZ
AZIMUTH DATA SYNC/RSLVR SEL switch 1A1A1S6 ............................................................ RSLVR
GROUP CASE POWER 60-Hz circuit breaker 1A1A1CB1 ...................................................... ON
GROUP CASE POWER SELECT switch 1A1A1S1 ................................................................. 60 HZ
POWER 60-Hz circuit breaker 1A1A1CB3 ............................................................................... ON
POWER FREQUENCY SELECT switch 1A1A1S4 .................................................................. 60 HZ
ANT ROTATION switch 1A1A1S3............................................................................................ CW
RPM CONTROL transformer 1A1A1T1.................................................................................... 5
CAUTION
(j) Set all interface adapter unit 1A1A1 power
controls to OFF.
Before connecting test equipment, place all
(k) Adjust multimeter to RX10 scale and connect
GROUP CASE POWER and POWER switches
between 1A1A1J16 -P and -R. Check that multimeter
to their OFF positions.
Insert insulated
indicates 1000 ohms 10%.
pins which will be monitored. Connect test
(l) Hold ROTATION ENABLE switch 1A1A1S2 in
equipment and set the GROUP CASE
ON, and check that multimeter indication does not
POWER and POWER switches to the
change.
applicable positions.
(m) Remove multimeter lead from 1A1A1J16-R and
connect to 1A1A1J12-D.
Observe that multimeter
(c) Connect multimeter, set to 250 vac scale,
indicates an open circuit.
between 1A1A1J10-P and -R and check that multimeter
swings from 0 vac to 90 vac 10 vac. Check that
(n) Hold ROTATION ENABLE switch 1A1A1S2 to
ON position and check that multimeter indicates less
POSITION DEGREES dials are rotating.
than 1 ohm.
(d) Remove multimeter lead from 1A1A1J10-P and
(o) Connect multimeter between 1A1A3J12 -D and
connect to 1A1A1J10-S, and check that multimeter
swings from 0 vac to 90 10 vac. Check that POSITION
-R, observe that multimeter indicates an open circuit.
DEGREES dials are rotating.
(p) Repeat step n above.
(e) Repeat steps (c) and (d) above for RPM
e. Antenna and Azimuth 400-Hz Data Circuit.
CONTROL transformer 1A1A1T1 settings of 10, 15, 20
(1) Test equipment and materials. The following
and 25.
test equipment is required: Multimeter TS-352B / U.
(f) Set ANT ROTATION switch 1A1A1S3 to STA,
(2) Procedure.
and check that multimeter indication is less than 5 vac.
(a) Connect interface adapter unit 1A1A1 to a
(g) Set ANT ROTATION switch to CCW.
115 vac 11.5 vac, 400-Hz power source.
(h) Repeat steps (c) through (e) above.
(b) Set controls on interface adapter unit 1A1A1 to
(i) Connect multimeter between 1A1A3J10 -W and
positions listed below.
-X and check for 115 vac 11.5 vac.
Control
Position
AZIMUTH DATA FREQ. SELECT switch 1A1A1S5. ............................................................... 400 HZ
AZIMUTH DATA SYNC/RSLVER SEL switch 1A1A1S6 .......................................................... SYNC
GR()UP CASE POWER 400-Hz circuit breaker 1A1A1CB2 .................................................... ON
GROUP CASE POWER SELECT switch 1A1AS1 ................................................................... 400 HZ
POWER 400-Hz circuit breaker 1A1A1CB4 ............................................................................. ON
POWER FREQUENCY SELECT switch 1A1A1S4 ................................................................. 400 HZ
ANT ROTATION switch 1A1A1S3............................................................................................ CW
RPM CONTROL transformer 1A1A1T1.................................................................................... 5
6-12
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