TM 11-5840-281-35/1
Control settings
Step No.
Test equipment
Equipment under test
Test procedure
Performance standard
None.
18
...............................As required -
Realign azimuth courseline cursors None.
to operational requirements if
Radar Set AN/TPN-18 is an
installed operational equipment.
Refer to TM-11-5840-281-12
for alignment instructions.
(1) Radar Set AN/TPN-18 turned on and aligned.
4-22.
(2) Pulse Generator O1333/TPN-18 in Control-
a. Test Equipment and Materials Required. Os-
Indicator C-6988/TPN-18 under test pulled out for access
cilloscope AN/USM-140B (oscilloscope).
to top deck controls.
b. Equipment Conditions.
.
c. Procedure
Control settings
Step No.
Test equipment
Equipment under test
Test procedure
Performance standard
1
Oscilloscope
Radar Receiver-
a. Connect test cable
a. None.
Transmitter RT-818/
between INPUT (trigger)
POWER: ON
on oscilloscope and PRE-
HORIZONTAL
TPN-18 control panel
TRIG test
POSITION: Midposition
MAIN POWER: ON
point TPl101 on top deck of
HORIZONTAL DISPLAY
SCAN: ON
Pulse Generator 0-
INTERNAL SWEEP
Master Control-Indicator
1338/TPN-18.
MAGNIFIER: X2
C-6988/TPN-18 and
HORIZONTAL DISPLAY
b. Connect oscilloscope
b. None.
Pulse Generator
EXTERNAL VER-
CHAN-
O-13S3/TPN-18
NIER: CAL
NEL A INPUT test prod to
POWER: ON
SWEEPTIME MILLI-
CURSOR SAW testpoint
TRANSMITTER: OFF
SECONDS/CM: 2
TP2602 on sawtooth
SCAN MODE: NORM
SWEEPTIME VERNIER:
generator
SCAN: ON
As required
in Pulse Generator 0-1833/
Control-lndicator
TRIGGER SLOPE:
TPN-18.
C-6988/TPN-18
As required
c. Connect oscilloscope
c. None.
under test
TRIGGER LEVEL:
CHANNEL B INPUT test
RANGE MILES: 20
As required
prod to FILL-IN CURSOR
ANGLE VOLTS switch:
SWEEP MODE: PRESET
SAW testpoint TP2603 on
OPERATE
TRIGGER SOURCE:
sawtooth generator in
EL CURSOR: GP
EXT AC
Pulse Generator 0-
FILL IN (switch
Vertical presentation:
1333/TPN-18.
S2901 on cursor gen-
ALTERNATE
erator card in Pulse
CHANNEL
Generator 0-13383/
A VERTICAL POSI-
TPN-18): ON
TION: Midposition
CHANNEL A SENSI-
TIVITY (VOLTS/CM):
As required
CHANNEL A SENSI-
TIVITY VERNIER:
As required
CHANNEL A AC-DC:
DC
CHANNEL A
POLARITY: +UP
CHANNEL B
VERTICAL POSI-
TION: Midposition
CHANNEL B SENSI-
TIVITY (VOLTS/CM):
As required
4-57
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