TM 11-5840-281-12-1
2.5. PRELIMINARY OPERATING PROCEDURE. (CONT)
CONTROL-INDICATORS
CRT Display Adjustments
1.
Place POWER circuit breakers (1) on both control-indicators to ON position.
2.
Place SCAN MODE switch (2) on master pulse generator to SEARCH position.
3.
Place SCAN switch (3) on master pulse generator to ON position.
4.
Check that azimuth antenna rotates, then place SCAN switch (3) to OFF position.
5.
After 3-minute warmup period, place TRANSMITTER switch (4) on master control-indicator to WIDE PLS
position.
6.
Press HV ON switch (5) on master control-indicator. The indicator light in both HV ON switches (5) on both
control-indicators will light.
7.
LIN indicator lights (6) on both control-indicators will light.
8.
Place PPI CENTERING NORM-OFFSET switches (7) on both control-indicators to NORM
9.
Rotate IF GAIN EL controls (8) on both control-indicators fully counterclockwise.
10.
Rotate IF GAIN AZ controls (9) on both control-indicators fully counterclockwise.
11.
Place RANGE MILES switches (10) on both pulse generators to 40 position.
12.
Place SCAN MODE switches (2) on both pulse generators to SEARCH position.
13.
Place SCAN switch (3) on master pulse generator to ON position.
14.
Adjust INTENSITY (11) and FOCUS (12) controls for the sharpest trace on both crt displays.
15.
Rotate IF GAIN AZ controls (9) on both control-indicators fully clockwise.
16.
Rotate VIDEO GAIN controls (13) clockwise until sharpest definition of low-level radar video Is obtained on both
crt displays.
17.
Set VIDEO GAIN controls (13) as high as possible without blooming of video or loss of definition.
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