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Page Title:
Table 2-5. Transponder Set Test Set AN/APM-378, Operating Controls, Indicators, and Connectors |
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|  TM 11-4920-296-14&P
Operating Controls, Indicators, and Connectors
REF
CONTROL , INDICATOR,
FUNCTION
DES
OR CONNECTOR
Connects Interrogator Computer
MODE 4 connector
J1
KIR-1A to AN/APM-378 test set.
Indicates alarm from KIR-1A.
CODE ZEROIZE lamp (red)
DS2
Selects verify 1 operation of KIR-1A.
VER BIT 1 ON/OFF switch
DS10
Selects Code A or B operation for
CODE A/B switch
S11
KIT-1A.
DIRECT TEST connectors
J3
Test set connections used for direct
NORMAL
J4
DIVERSITY
connection to transponder, either
normal (single-channel) or diversity.
DS3
Indicates results of test are accept-
ACCEPT lamp
able - transponder OK.
DS4
Indicates results of test are not
REJECT lamp
accept able - transponder faulty.
Connects AN/APM-378 output/input
J5
RADIATED TEST ANTENNA
to test set antenna.
connector
J2
Connects input ac or dc power to
POWER-28 VDC/115 VAC
test set.
connector
DS1
Indicates power ON.
Lamp
28 VDC switch (ON/OFF)
CB1
Control application of 115 V ac or
115 VAC switch (ON/OFF)
CB2
28 V dc, whichever is being used.
S7
Selects type of system (single-channel,
SYSTEM TYPE switch
diversity, or lobing mode) to be tested.
S8
Selects test set mode - LAMP TEST,
FUNCTION switch
SELF-TEST, SYSTEM, FREQ/PWR,
EMER, or I/P.
S9
Selects transponder mode (1, 2, 3/A,
MODE switch
C, TEST, or 4) to be tested.
S1 thru
Select transponder codes in use.
REFERENCE CODE switches
S4
A, B, C, D
Injects SLS pulses into interrogations,
S5
SLS-MOM/OFF switch
when in MOM position.
S6
Initiates testing (interrogation/reply
TEST -MOM/OFF/ON switch
checks) when in MOM or ON position.
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