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Description of the Upgrade
Installation Procedure for the Upgrade
2. Remove all bottom-side (test set) semirigid cables except for those in the
Reference
a
Type
Designator
W11
SR
W17
SR
W51
SR
W55
SR
W56
SR
W57
SR
a. SR = semirigid coaxial cable.
1. Remove and discard the following gray flexible cables:
2. W147 (N5242-60025) A27 mixer brick (R1) to A24 IF multiplexer (P601)
3. W63 (N5242-60026) A27 mixer brick (R2) to A24 IF multiplexer (P801)
4. Leave the remaining gray flexible cables, the wire harnesses, and the
Step 7. Remove the A27 Mixer Brick Assembly
Remove the A27 mixer brick assembly from the PNA-X. For instructions, click
the Chapter 7 bookmark, "Removing and Replacing the A27 and A28 Mixer
Bricks" in the PDF Service Guide
Step 8. Assemble the A28 Mixer Brick Assembly
1. Follow the two instructions shown in
Installation Note N5245-90133
following table. Do not discard the cables that are removed because some
will be reused later in the procedure.
To see an image showing the location of cables W11, W17, and W51 click
the Chapter 6 bookmark "Top Cables, All Cables - All Options, S/N Prefix
6021" in the PDF Service Guide
≥
cables W55, W56, and W57, click the Chapter 6 bookmark "Bottom RF
Cables, 2-Port, Option 219, S/N Prefix
Part Number
Qty
N5245-20036
1
N5245-20036
1
N5245-20101
1
N5245-20102
1
N5245-20103
1
N5245-20012
1
ribbon cables connected where possible. Any that are removed should be
labeled for reconnection later.
Table 2 on page 12
of this document.
1. See
"Downloading the Online PNA-X Service Guide" on page
1
. To see an image showing the location of
6021" in the PDF Service Guide
≥
Description
A7 port 1 doubler to W12
A8 port 2 doubler to W18
A15 13.5 GHz (LO) synthesizer board J1207 to A25 HMA26.5
A7 port 1 doubler to W56
W55 to rear-panel EXT TSET DRIVE RF OUT (J6)
A27 mixer brick to EXT TSET DRIVE LO OUT (J5)
1
.
Figure
1. New parts are listed in
.
1
10.
19
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