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SECTION II
Model 4277A
CAUTION:
BEFORE PROCEEDING WITH INSTALLATION OF OPTION(S),
TURN OFF THE INSTRUMENT AND DISCONNECT THE
AC POWER CORD.
OPTION 001
DC BIAS SUPPLY
(0 to i40V)
Board Assembly A22
04276-66522
Installation
Procedure
(after removing
top cover)
1. Remove the rear panel
access
plate shown
below.
OPTION 002
COMPARATOR/
HANDLER INTERFACE
Comparator
16064A
Includes:
Interface Board Assembly
16064-66502 and
36-pin male Amphenol
connector
1251-0084
1.
Remove the rear panel
access plate shown
below.
2.
Insert the dc bias board
(P/N:
04276-66522)
into the access hole.
3.
Insert the male edge
connector of the interface
board into the female
edge connector of the
4277A mother board and
push firmly until the
interface board is
completely seated.
4.
Reinstall the screws
removed in step (1).
Insert the interface
board (P/N:
16064-
66502) into the access
hole.
Insert the male edge
connector of the interface
board into the female edge
connector of the 4277A
mother board and push
firmly until the interface
board is completely
seated.
Reinstall the screws removed
in step 1.
Connect the 16064A keyboard
cable to the connector on
the interface board
(installed in step 3).
Adjust the power supply
in accordance with the
procedure given in
Figure 2-5.
Figure 2-4. Option Installation.
2-6
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