TM 11-5840-281-35/1
Control settings
Step No. Test equipment Equipment under test
Test procedure
Performance standard
MAIN POWER: ON
b. Connect test cable between b. None.
HORIZONTAL POSI-
trigger INPUT connector on
Master Pulse Generator
TION: Midposition
oscilloscope and PRE TRIG-
HORIZONTAL DIS-
O-13SS/TPN-18
GER testpoint TP211 on radar
PLAY INTERNAL
SCAN MODE: SEARCH
transmitter. Use tee adapter
SWEEP MAGNIFIER:
SCAN: OFF
UG-274/U at testpoint TP211.
XI
Master Control-Indicator
c. Connect calibrated rf test cable c.
HORIZONTAL DIS
C-6988/ TPN-1 8
None.
PLAY EXTERNAL
FOCUS: Fully ccw
(part of radar test set) between
VERNIER: CAL
INTENSITY: Fully ccw
RF POWER connector on
SWEEP TIME (MICRO-
POWER: ON
radar test set and azimuth
SECONDS/CM): 2
IF GAIN-AZ: Fully cw
directional coupler MP3521
SWEEP TIME VER-
IF GAIN-EL: Fully cw
on side of Radar Receiver-
NIER: CAL
FTC: OFF
Transmitter RT-818/TPN-18.
TRIGGER SLOPE: As
EL TARGET: Fully ccw
d. Connect test cable between d. None.
required.
SYNC IN connector on radar
TRIGGER LEVEL: As
test set and tee adapter UG
required.
274/U installed on PRE
SWEEP MODE: PRE-
TRIGGER testpoint TP211 on
SET
radar transmitter.
TRIGGER SOURCE:
EXT AC
Vertical presentation:
CHANNEL A
CHANNEL A SENSI-
TIVITY (VOLTS/
CM): 0.1
CHANNEL A SENSI-
TIVITY VERNIER:
CALIBRATED
CHANNEL A AC-DC:
DC
Radar test set
POWER: ON
Rf power switch:
POWER SET
Function switch: OFF
RF TUNING: Operating
2
As last indicated -----------------------
As last indicated -----------------------------------
a. On radar test set, adjust ZERO
a.
None.
SET control for ZERO SET
indication on power meter.
b. Place function switch to INT b. None.
FM.
c. Rotate FM AMPLITUDE
c. None.
control fully cw (100).
d. Set ADD TO PWR METER
d. None.
control to 0 DB (PWR SET).
e. Rotate OUTPUT ATTEN
e. None.
control fully cw.
f. Adjust RF TRIMMER control f. None.
until indication is obtained on
power meter.
g. Place function switch to CW-- g. None.
h. Adjust RF TRIMMER and
h. None.
REFLECTOR controls for max
indication on power meter.
Maintain power meter indi-
cation below half-scale by
adjusting OUTPUT ATTEN.
control ccw.
4-13
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