TM 11-6625-3081-23
8-3. ANALOG TO DIGITAL CONVERTER ASSEMBLY 2A2A13 (cont)
8 - 3
15.
16.
17.
18.
19.
20.
21.
22.
23.
Remove signal processor AC262 CCA
from slot J73 (10). Install
extender card (11) in slot J73.
Install CCA in extender card.
Set extender card switches S1, S2,
and S3 to position 1.
Press front panel POWER switch to
apply power.
Press LOCAL/REMOTE
switch for local control.
Set extender card switch S2 to
position 2.
Press front panel ANALOG switch.
Verify that ANALOG LED is on.
Set front panel digiswitches to
000000.
Connect channel
oscilloscope to
card.
Connect channel
oscilloscope to
card.
1 vertical input of
pin E on extender
2 vertical input of
pin C on extender
Set up oscilloscope as follows:
Channel 1 vertical input: 2v/division
Channel 2 vertical input: 2v/division
Horizontal timebase: 50 microseconds
Triggering: + slope
Trigger source: channel 1
24. Adjust channel 1 trigger to place
leading edge of displayed pulse on
leftmost vertical graticule.
25. Display channel 2. Change hori-
zontal timebase to 1 microsecond.
26. If necessary, adjust R15 (12) on CCA
until time between rising edge of
signal on channel 1 and rising edge
of signal on channel 2 is between
5.5 and 6.5 microseconds.
27. Disconnect oscilloscope probes from
CCA.
8-6
Change 9
