TM 11-6625-3081-23
8-4. BUS MULTIPLEXER CCA 2A2A7A6A7 (cont)
8 - 4
10.
11.
12.
13.
14.
CAUTION
Visually inspect connections to
insure no visible shorts exist prior
to applying power.
Connect frequency counter input clip
lead to U25-10 (7) (location 26R on
back) on BUS multiplexer CCA.
Connect ground clip lead to CCA
ground labled G on back of CCA.
Energize CB1 on AC Control Panel
1A5.
Wait 10 seconds, then energize
CB3.
Allow 10 minutes warmup time
before proceeding.
Observe counter for a displayed
frequency between 6.719988 and
6.720012 MHz.
NOTE
Allow 30 minutes for reading to
stabilize.
If counter indicates frequency is
within limits, no adjustments are
required.
If frequency is not
within limits, continue with step
15.
8-20
Change 9
