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Model
8904A
Instrument Changes
Option Quantity
7-5.
REAR-TO-FRONT-PANEL OUTPUT CONVERSION
Description HP Part Number
Description
Option Quantity
Standard
2
Option
002
4
3
This procedure describes how to convert an instrument with rear-panel output connectors (that is,
Option
004)
to one with front-panel connectors (that
is,
a standard instrument). The procedure applies
to instruments with one pair of outputs
or
two
(that is, Option
002).
The modifications requires partial disassembly
bf
the instrument (removing covers and routing of
cables). No soldering
is
required. Modification should be done in a static protected environment. After
modification,
two
performance tests must be run.
Description HP Part Number
Plastic
Hole-Plug
6960-01 32
Plastic
Hole-Plug
6960-01 32
Cable
Tie
1400-0249
Parts Required
Standard
2
Option
002
4
3
The following parts are required and may
be
ordered by contacting the nearest Hewlett-Packard Sales
Oflice.
Plastic
Hole-Plug
Plastic
Hole-Plug
Cable
Tie
6960-01 32
6960-01 32
1400-0249
Tools
Required
The following tools are needed to modify the instrument:
9/16
inch,
6
point Nut Driver
No.
2
Pozidriv Screwdriver
Diagonal Cutters
Needle-nose Pliers
Modification Procedure
Removing Bottom Cover
1.
Turn the instrument
off
and unplug the power cord.
2.
Lay the instrument on
its
top and unscrew the Pozidriv screw in the middle of the rear edge of
the bottom cover. This
is
a captive screw and will cause the bottom cover to push away from the
frame. Slide the cover back about
6.5
mm
(0.25
inch) and lift
it
off.
Preparing
the
Chassis
1.
Remove the nuts from the present rear-panel outputs with the
9/16
inch nut driver.
Do
not press
against the rear panel with the tool
or
scoring of the panel may occur.
2.
Remove the cable ties that secure the coaxial output cables to the sideframe by cutting them
with diagonal cutters being careful not to score the soft insulation on the cables.
3.
Remove the necessary plastic hole-plugs in the front panel by approaching them from inside the
chassis with the needle-nose pliers and squeezing-in the small holding tangs on opposite sides
of the plug. Grasp the front
of
the plug with your fingers to pull it away from the panel.
Do
not
attempt to pry the plug out from the panel
or
the panel surface may get scarred.
rev.15DEC89
Rear-to-F'ront-Panel Output Conversion
7-5