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Page Title:
Mode 4 Challenge Video Tests-CONT. |
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 C.
Procedure.
Control Settings
Step
Performance Standard
Equipment under test
Test Procedure
Test equipment
No.
FUNCTION: SYSTEM
AN/TPM-25A
a. 2 0.07
a. Adjust AN/USM-281 DELAYED
1
MODE: 4
REPLIES panel:
sweep and DIV DELAY controls
ISLS: ON
MODULATION SEL: M4-3P
to observe the first five pulses of
PUSH TO TEST: LOCK
REPLY WIDTH: 0.45
the challenge train on A INPUT
SUB PULSE SEL: OFF
and the timing markers on B
RANGE DELAY SEL (SEC):
INPUT. Measure pulse spacing
0001
from leading edge of the first
MEASUREMENT panel:
pulse to leading edge of second
PRF RANGE: X100
pulse.
FUNCTION SEL: PRF CHALZ
b. 2 *0.07
6. Using procedures in a above,
D E M O D VID LEVEL: Mid
measure pulse spacing from
position
fourth to fifth pulse.
SIF CHAL VID panel SIF MODE
c. Amplitude difference does not
AN/USM-281A
c. Adjust
SEL: OFF
exceed 10%
DELAYED TIME & DIV and
AN/USM-281A
DIV DELAY to observe all 37
Sweep Delay Switch
pulses of the pulse train. Observe
DELAYED
amplitudes of first and last
MAIN TIME/DIV: .1 MSEC
pulses.
DELAYED TIME/DIV: 10 SEC
EXT 10/EXT/INT/LINE: EXT
INT AUTO/EXT/EXT l0: AUTO
MAINSLOPE +:+
DEALYEDSLOPE +: +
MAIN ACS/ACF/AC/DC: DC
DIV DELAY: 0.82
DISPLAY: ALT
A VOLT/DIV: 5
B VOLTS/DIV: 2
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