TM 11-6625-2709-12
nectors.
e. Aircrafl Test Set Wiring Harness TS-2501/
e. Electrical Cable Assembly W-2/ARM-92B. The
control unit test cable (fig. 1-5) is used to test the
storage place in the test set cover for use. When the
control unit of the AN/AR.M-92B during self-test
protective cover on the aid box is removed, all the
procedures.
connectors and indicators on the top panel are
exposed. The connectors provide all the electrical
1-13. Additional Equipment Required.
connections required by the aid box. The indicators
The following equipment is not supplied as part of
provide visual checks of various circuits in the
Radio Test Set AN/ARM-92B, but is required for
control unit and in the glideslope receiver.
use with it.
1-12. Description of Minor Components.
a. DC Power Supply. A- 27.5-volt dc power
a. Test Set Cover CW-878A/ARM-92B. The test set
supply is required to supply a maximum of 33
watts to the test set.
cover (fig. 1-3) provides storage space for the aid
b. AC Power Supply. A 115-volt, 400-Hz power
box, and protects the test set during transit or
supply is required to supply a maximum of 92 watts
storage. The test set cover is mounted by two
to the test set.
hinges at the rear of the test set. It is secured with
two latches located at the front of the test set to
c. Headset. A headset with at least 300-ohm
form the upper half of the fiber-glass carrying case.
impedance (Headset HS-33, or equivalent) is re-
With the cover closed, the gasket inserted in the
quired to monitor the receiver audio output signal.
d. VOR (VHF Omnirange) Signal Generator. A
bottom groove of the cover makes the case airtight
and moistureproof.
VOR signal generator (Signal Generator SG-1A/
b. Electrical Power Cable Assembly CX-11568/
ARN, or equivalent) is required to supply the rf
carrier for the VOR signal applied to the receiver.
e. VOR Modulator. A VOR modulator (Modulator
connect primary power to the test set. The cable is
MD-83A or equivalent) is required to amplitude
a 4-conductor cable, 8 feet long, with a 5-pin female
modulate the rf carrier from the VOR signal
connector on one end that connects to the test set.
generator with a 30-Hz signal, and with a 9960-Hz
On the other end are four color-coded, insulated
signal which is frequency modulated with a 30-Hz
wires protruding from the cable covering. The red
signal.
wire is connected to the positive side of a 27.5-volt
f. Output Meter. An output meter (Output Meter
dc power source. The gray wire is connected to the
TS-585/U, or equivalent) is required to measure the
high side of a 115-volt, 400-Hz power source. Both
amplitude of the receiver audio output signal.
the white wire and black wire are connected to
ground.
26/U, or equivalent) is required to make the voltage
c. Special Adapter Cable CX-13034/AR. The
measurements on the test set.
AN/ARN-123 test cable (fig. 1-6) is used to connect
h. Glideslope Generator. A glideslope generator
the test set to the AN/ARN-123. The cable is a
is required to supply modulated rf carrier for the
50-conductor cable, 30-inches long, with 5 connec-
signal applied to the glideslope receiver.
tors.
i. Marker Beacon Generator. A marker beacon
d. Special Adapter Cable CX-13035/AR. The
generator is required to supply modulated rf
R-1963/ARN test cable (fig. 1-7) is used to connect
carrier for the marker beacon signal applied to the
the test set to the R-1963/ARN. The cable is a
receiver.
26-conductor cable, 30-inches long, with two con-
Change 2 1 - 5
