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 c. Procedure
Control Settings
Step
Test Procedure
No.
Test Equipment
Performance Standard
Equipment under test
1
AN/TPM-25A
FUNCTION: SYSTEM
a. None
REPLIES panel:
MODE: 4
MODULATION SEL: M4-3P
DIR/RAD: RAD
b. On AN/USM-281A, adjust DIV
b. None
REPLY WIDTH:-0.45
ISLS: OFF
DELAY as required to observe
SUB PULSE SEL: OFF
PRESS TO TEST LOCK
reply pulse on B INPUT.
RANGE DELAY SEL ( SEC):
c. None
c. O n A N / U P M - 1 5 A , a d j u s t
0001
POSITIVE AMPLITUDE for a
MEASUREMENT panel:
5 volt delayed puke on
PRF RANGE: X100
oscilloscope A INPUT.
FUNCTION SEL: PRF CHAL
d. Adjust PULSE WIDTH fine
d. None
DEMOD VID LEVEL
control for a delayed pulse width
Mid position
of .5 9.
SIF CHAL VID panel
e. Adjust PULSE DELAY fine
e. None
SIF MODE SEL: OFF
control for a delayed pulse
20V/5V:5V
leading edge 3.5 s from leading
TRIG SEL panel:
edge of reply pulse.
DCD MODE SEL: OFF
INT DCD/EXT: EXT
SIG GEN FUNCTION: FIXED
FREQ
SIG GEN NORM INTER-LEAVE:
NORM
SUM ATTEN: -6 dB
GATING panel
PASS: 00
INHIB: 00
AN/USM-281A
Sweep Display Switch DELAYED
MAIN TIME/DIV: .1 MSEC
DELAYED TIME/DIV: 1
EXT 10/EXT/INT/LINE: EXT
INT AUTO/EXT/EXT 10: AUTO
MAIN SLOPE +:+
DELAYED SLOPE +:+
MAIN ASC/ACF/AC/DC: DC
DIV DELAY: 475
DISPLAY ALT
A VOLT/DIV: 5
B VOLTS/DIV: 2
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