TM 11-6625-3081-23
8-3. ANALOG TO DIGITAL CONVERTER ASSEMBLY 2A2A13 (cont)
8 - 3
ISOPLEXER OFFSET AND GAIN ADJUSTMENTS
(SLOT J5)
50.
51.
52.
53.
54.
55.
56.
57.
58.
59.
60.
CAUTION
The A/D converter contains parts and
assemblies sensitive to electro-
static discharge (ESD). Use ESD
precautionary procedures (para 2-21)
when touching, removing, or insert-
ing CCAs.
Remove isoplexer CCA from slot J5
(22).
Install extender (23) in slot
J5. Install CCA in CCA extender.
Install radio frequency (rf) cable
assembly (24) on CCA in slot J5.
Press front panel POWER switch to
apply power.
Press LOCAL/REMOTE
switch for local control.
Set front panel digiswitches to
100200.
Install shorting plug on P1
of rf cable assembly.
Press front panel ANALOG switch.
If necessary, adjust R101 (25) until
front panel DATA DISPLAY indicates
as close to O as possible.
(Upper
limit is 4 and lower limit is
177774.)
Remove shorting plug from P1 of rf
cable assembly. Set A2A9 calibrator
to +7.5 VDC.
Connect P1 of rf cable
assembly to unconnected connector of
13081706-69 cable.
If necessary, adjust R105 (26) until
front panel DATA DISPLAY indicates
as close to 60000 as possible.
(Upper limit is 60004 and lower
limit is 57774.)
Disconnect P1 of rf cable assembly
from 13081706-69 cable.
Set front panel digiswitches to
100210.
Install shorting plug on P2
of rf cable assembly.
Press front panel ANALOG switch.
8-10
Change 9
