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TM 11-6625-2884-30/NAVAIR 16-35TS3615-2
CON SCAN MODULATIOIN CHECK (Continued)
8.
Set CS MOD DEPTH switch to
2 DB and the 1A2 INPUT RF
ATTENUATOR to 2 DB. Set
the modulation bottom on a
horizontal reference line
using the oscilloscope dc
level control. Oscilloscope
vertical gain remains as set
in step (6) (1 dB/DIV).
BOTTOM
Add 2 dB to the INPUT RF
9.
ATTENUATOR.
Modulation peak point
is on the horizontal
reference line O.2 DIV.
As
in
step
7
except
adjust R8.
10.
Repeat steps (8) and
(9) for the remaining
positions of the CS
MOD DEPTH switch as
follows.
Set MOD DEPTH switch to
next higher position.
Set INPUT RF ATTENUATOR
to 2 DB. Set modulation
bottom on reference line.
3-34
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