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Description of the Upgrade
Installation Procedure for the Upgrade
Step 6.Remove Some Existing Test Set Cables
Leave the gray flexible cables, the wire harnesses, and the ribbon cables
connected where possible. Any that are removed should be labeled for
reconnection later.
Be careful not to damage the center pins of the semirigid cables. Some
flexing of the cables may be necessary but do not over-bend them.
1. Place the analyzer bottom-side up on a flat surface.
2. Remove and discard the following gray flexible cables:
3. Remove all bottom-side semirigid cables except for those in the table
Reference
a
Type
Designator
W3
SR
W9
SR
W45
SR
W46
SR
W47
SR
a. SR = semirigid coaxial cable.
4. Leave the gray flexible cables, the wire harnesses, and the ribbon cables
Step 7.Remove the A23 Mixer Brick Assembly
Remove the A23 mixer brick assembly from the PNA. For instructions, click the
Chapter 7 bookmark, "Removing and Replacing the A23 and A24 Mixer Bricks"
in the PDF Service Guide
Installation Note N5242-90015
— W150 A20 IF multiplexer (P203) to A12 SPAM (J5)
— W140 A20 IF multiplexer (P603) to A12 SPAM (J2)
below. To see an image showing the location of these cables, click the
Chapter 6 bookmark "Bottom RF Cables, Standard 2-Port Configuration,
Option 200" in the PDF Service Guide
some will be reused later in the procedure.
Qty
Description
1
A5 source (1) to W4
1
A5 source (1) to W10
1
A5 source (1) to W46
1
W46 to rear-panel EXT TSET DRIVE RF OUT (J6)
1
A23 mixer brick to EXT TSET DRIVE LO OUT (J5)
connected where possible. Any that are removed should be labeled for
reconnection later.
1
"Downloading the Online PNA Service Guide" on page 6
1. See
. Do not discard the cables because
1
.
.
13
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