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Page Title:
Sectionalization Tests Using AN/UPM-137A.-CONT. |
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 Control settings
Equipment
Normal
Paragraph
Procedure
under test
Test equipment
Step
indication
reference
(3) Adjust the DELAY MULTIPLIER control
(3) Delay between
to measure the delay between pulses P1
P1 and P3
and P3 at the 50-percent points of the lead-
should be 3 sec
ing edges. Multiply dial reading by 2 and
0.2.
note.
d. None.
e. P1-P3 pulse spacing.
e. Set the test set MODE switch at each of the
following positions and repeat c(3) above to
measure delays, except to multiply dial
reading by 5.
(1) 2 . . . . . . . . . . . . . . . . . . . . . .
(1) 5 sec 0.2.
(2) 3/A . . . . . . . . . . . . . . . . . . .
(2) 8 sec 0.2.
(3) C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(3) 21 sec 0.2.
(4) TEST. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(4) 6.5 sec 0.2.
AN/UPM-137A
MODE: 2
a. None.
(rf signal generator)
and turn on AN/UPM-137A and test set.
CODE (A, B, C, D)
OUTPUT ATTEN 0-100 dBm:
Permit a few minutes to warmup.
7777
b. Press test set PUSH TO TEST switch and turn
b. None.
to LOCK position.
TRANSMITTER-XMTR FREQ:
XTAL
c. If necessary adjust AN/UPM-137A SIS gen-
c. None.
erator TRIGGERS-DELAY (SEC)-
TRANSMITTER-CW SOURCE
EXT 1090
MULT 1-11 control until test set indicates
(interrogator signa1 simulator)
ACCEPT and will indicate REJECT when
TRANSMITTER-XMTR FREQ:
test . set CODE switches are changed to
XTAL
7776.
(SIS generator)
d. None.
SIF 1 CODER-Code switches
as necessary for a clear display and to per-
(A, B, C, D): 7777
form required measurements.
SIF 1 CODER-FUNCTION
SEL: N
SIF 1 CODER-WIDTH ADJ:
approx. center
SIF 1 CODER-SUBST PULSE
SEL: OFF
MIXED VIDEO-MIXED VIII
SEL: SIF 1
PRF-RANGE MULT: EXT-
TRIGGERS-DELAY TRIG
(SEC)
DLY RANGE MULT: X4
TRIGGERS-DELAY TRIG
(SEC)
MULT 1-11:6.0
(oscilloscope)
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