TM 11-6625-1820-12
Table 2-2 lists the control unit controls, indicators, and jacks and a functional description for
The control panel is shown in figure 2-5.
Control, indicator or jack
PRIME POWER
POWER ON-OFF (two-position toggle)
In the ON position, applies 115 vac (line to neutral),
3-phase, 400 Hz and 28 vdc to the control unit.
DC CIRCUIT BREAKER (push-button)
Opens if the 28 vdc circuits draw excessive current.
AC CIRCUIT BREAKER (push-to-reset)
Opens if the 115 vac circuits draw excessive current.
PANEL LIGHTS switch (two-position toggle,
In the TEST position, applies power to the control
spring-loaded to the off position)
unit RT FAULT light, the TRANSMITTER ON
light, and the TRANSMITTER READY light
to test the operation of the lamps,
In the ON position, applies poser to the receiver-
RT POWER-POWER switch (two-position toggle)
transmitter under test.
In the TRANSMIT position, turns on the high voltage
TRANSMIT-STAND BY switch (two-position toggle)
power supply in the receiver-transmitter under
PBF switch (three-position rotary)
Sel
Selects one of four pulse widths for the RF SWITCH
PULSE WIDTH switch (four-position rotary)
GATE output signal.
Delays the RF switch gate and selects one of three
PULSE DELAY switch (three-position rotary)
delays, which is inserted into the SCOPE SYNC
(MOD TRIG) circuit when measuring receiver
recovery time.
ANTENNA select switch (three-position rotary)
Changes the frequency of the receiver-transmitter
TRANSMITTER FREQUENCY control (potentiometer)
magnetron under test.
Selects a sync signal to sync an external oscilloscope
SCOPE SYNC switch (six-position rotary)
when performing various tests on the receiver-
transmitter under test.
Switch Position
ANT GATE
the antenna gate
ANT TRIG
DEAD TIME GATE
1 S MARK
ing the 1 second
mark signal
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