Installation Note N5222-90131 25
Description of the Upgrade
Installation Procedure for the Upgrade
Step 12. Remove Some Bottom-Side Semi-Rigid Test Set Cables
1. Place the analyzer bottom-side up on a flat surface.
2. Remove the following cables. To see an image showing the location of
these cables, click the Chapter 6 bookmark “Bottom RF Cables, Standard
2-Port Configuration, Option 220, S/N Prefixes ≥6021,” in the PDF Service
Guide
1
.
These cables may be discarded - they will not be reinstalled.
— W149 (N5247-60023) A20 IF multiplexer board P603 to A12 SPAM board J2
(2-port)
— W150 (N5247-60024) A20 IF multiplexer board P203 to A12 SPAM board J5
(2-port)
— W64 (N5242-60025) A23 mixer brick (R1) to A20 IF multiplexer (P601)
— W65 (N5242-60026) A23 mixer brick (R2) to A20 IF multiplexer (P801)
— W154 (N5222-20124) A32 port 2 coupler to front-panel Port 2 A74 bias T
combiner
— W117 (N5222-20071) A32 port 2 coupler to front-panel Port 2 CPLR ARM
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.
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.
Remove and save the cable guards for the front panel jumpers.
When removing a cable, also remove the plastic cable clamp, if present. It
is normal for some of the cable clamp’s adhesive to remain.
1. See “Downloading the Online PNA Service Guide” on page 8.
These flexible cables have been removed in previous steps:
— W149 (N5247-60023) A20 IF multiplexer board P603 to A12 SPAM board J2
(2-port)
— W150 (N5247-60024) A20 IF multiplexer board P203 to A12 SPAM board J5
(2-port)
— W64 (N5242-60025) A23 mixer brick (R1) to A20 IF multiplexer (P601)
— W65 (N5242-60026) A23 mixer brick (R2) to A20 IF multiplexer (P801)
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