TM 11-6625-16832-15
CHAPTER 3
OPERATING INSTRUCTIONS
Section I. OPERATOR'S CONTROLS AND INDICATORS
3-1. GeneraI Information
The functions of some of the controls and indicators on the test panel are described by tell-
ing what they accomplish in the radar circuits being tested. The circuits being tested in the radar
set are referred to by their block numbers.
3-2. INPUT POWER Block Controls and Indicators
Function
Control or indicator
I
Position
Action
OFF
Deenergized test panel.
INPUT POWER switch ___________
AC ON Connects test panel to 115-vac input power.
DC ON Connects test panel to dc input power.
Action
Position
ON
Indicates test panel is being energized by 11-vac power.
AC ON indicator light (red). _______
Indicates test panel is being energized by dc power.
ON
DC ON indicator light (clear) ______
Connects test panel to 115-vac power.
115 VAC line cord ------------------
Provides for connection of cable to Battery Box CY3871/PPS5 or to
6 VDC jack _______________________
Power Supply PP-4450/PPS-5.
3-3. Block 300 (If. Amplifier Test) Controls and Indicators
Function
Control or indicator
Action
Position
ON
Connects pin C of connector 300 to 5 volts, pin H to +12 volts,
ON/OFF switch ___________________
and pin B to + 6 volts to energize block 300 if. amplifier cir-
cuits.
Disconnects dc supply voltages from connector 300, and connects
OFF
them to ground through resistive load equal to that of block
300 if. amplifier.
Provides connection for observation of target video output from block 300
RCVR-XMTR VIDEO test jack
if. amplifier to headphone and test meter target indication circuits in
(blue).
receiver-transmitter.
Provides connection for `observation of target video output from block 300
CONT-IND VIDEO test jack (blue) --
if, amplifier to video precessing circuits in control-indicator.
Provides connection for CX-10429/PPS-5.
Connector 300 (seven-pin) -----------
AGO 7918A
3-1
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