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TM 11-5820-890-30-5
3-7. TEST ADAPTER. Continued
Table 3-1. Test Adapter Switches Continued
NAME (NUMBER)
FUNCTION
MOD GEN (S7)
LOAD (S8)
TEST EQPT
INPUT (S9)
CAL (S12)
PTT (S13)
STIM SEL (S14)
RESP SEL (S15)
When ON, this switch routes the function generator’s modulation
generator output to the UUT.
Sets resistance loads on the test equipment measurement inputs.
The loads are:
1
620 ohms
2
510 ohms
3
220 ohms
4
150 ohms
The load resistors are mounted on the test adapter power supply CCA.
Selects between testing signals from external probe or from RESPONSE
switch.
Selects to send either the function generator or the modulation
generator signal to the frequency counter and scope 2 for calibration.
Provides Push-To-Talk signal (GND) to UUT or REF RT.
Selects either function generator or handset signals to be sent to
STIMULUS switch.
Selects deck 1 or deck 2 of RESPONSE switch for source of test signals.
g. Test
signals. The
Points. There are twelve plugs mounted on the
test point signals are:
TEST POINT
TP1
TP2
TP3
TP4
TP5
TP6
TP7
TP8
TP9
TP10
TP11
TP12
front panel. They provide access to test adapter
SIGNAL FROM
Pin F of UUT connector.
Pin b of UUT connector.
Not connected.
Test power supply input: 27.5 V dc.
Pin V of UUT connector.
Test power supply input: 27.5 V dc.
DC switch output: 27.5 V dc when ON.
Voltage regulator U3 output: 13 V dc.
13V switch output: 13 V dc when ON.
Voltage regulator U1 output: 6.75 V dc.
Voltage regulator U2 output: 5 V dc.
Chassis ground.
3-19
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