Quantcast Table 3-1. Test Set Controls and Indicators Continued - TM-9-4931-363-14-P0085

 

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Table 3-1. Test Set Controls and Indicators Continued - TM-9-4931-363-14-P0084
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TM-9-4931-363-14-P Fire Control Subsystem Test Set AN/GSM-249 P/N 2201736-05 Manual
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Table 3-1. Test Set Controls and Indicators Continued - TM-9-4931-363-14-P0086
TM 9-4931-363-14&P
Table 3-1. Test Set Controls and Indicators - Continued
Function
Ref des
Nomenclature
METER SELECT switch
Connects meter to circuit to be monitored
S5
Programs test set circuits to provide input voltages
S4
TEST SELECT switch
and output monitoring for units under test
Programs test set circuits to apply input voltages and
S8
CARD swtich
output monitoring for circuit cards. Switches monitored
voltages for self-test
EIA/AMPL switch
S3
Selects BIT voltage to be routed to buffer amplifier in
EIA. Selects monitored EIA and self-test voltages
Programs test set circuits to connect a buffer amplifier
S7
LINKAGE switch
to each linkage resolver in sequence. Applies test voltage
during buffer amplifier test. Applies voltages to be
monitored for self-test
S2
EIA BIT switch
Selects BIT voltage to be routed to EIA
Programs test set circuits to provide input voltages for
S6
SYSTEM switch
testing helmet sight subassembly
F1
Protects 115-volt, 60-Hz power circuit against overload
3 AMP 60 HZ fuse
F2
Protects 115-volt, 400-Hz power circuit against overload
3 AMP 400 Hz fuse
Applies +28 volts dc to initiate BIT sequence. Also
Sll
FUNCTION INITIATE
applies to some self-test functions
switch
Applies +28 volts dc to retract the sight portion of the
S1
SIGHT RETRACT switch
helmet sight assembly
Selects linkage resolver rotor output (R2 or R3) to be
S9
RSLVR SELECT switch
monitored
Lights to indicate internal 28 vdc power supply is operating
DS18
POWER indicator
Selects 11 5-volt, 60-Hz power or 115-volt, 400-Hz power
S1
POWER switch
for internal use
Provides voltages impressed on meter for display on scope
Jll
J11 test jack
to check amplitude and phase
Provides enable A and enable B voltages for display on scope
J12
J12 test jack
to check amplitude and phase during sequencer test
Provides time, in-phase, reference voltage for scope synch
J13
J 13 test jack
during circuit card tests
3-5

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