18 Installation Note N5247-90106
Installation Procedure for the Upgrade
-
Step 9. Remove Some Bottom-Side (Test Set) Cables
1. Place the analyzer bottom-side up on a flat surface.
2. Remove all bottom-side cables (gray flexible and silver semi-rigid) except
for those in the 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, W13, W23, W25,
W61, and W65, click the Chapter 6 bookmark “Top Cables, All Cables - All
Options” in the PDF Service Guide. To see an image showing the location
of cable W66, click the Chapter 6 bookmark “Bottom RF Cables, 2-Port,
Option 219” in the PDF Service Guide1.
3.
Remove and discard the following gray flexible cables that have a top-side
connection:
—
W99 (N5247-60023) A16 SPAM board (J2) to A24 IF multiplexer (P603)
—
W100 (N5247-60024) A16 SPAM board (J5) to A24 IF multiplexer (P203)
4.
Leave the remaining 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.
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.
Do Not Remove These Bottom-Side Cables
Reference
Designator Type
a
Part Number
Qty
Description
W11
SR
N5247-20114
1
A7 port 1 40 GHz doubler P6 to W12
W13
SR
N5247-20086 1
A7 port 1 40 GHz doubler P2 to W14
W23
SR
N5247-20114
1
A8 port 2 40 GHz doubler P6 to W24
W25
SR
N5247-20086
1
A8 port 2 40 GHz doubler P2 to W26
W61
SR
N5247-20110
1
A15 13.5 GHz (LO) synthesizer board J1207 to A25 HMA26.5
W65
SR
N5247-20113
1
A7 port 1 40 GHz doubler P5 to W66
W66
SR
N5247-20109
1
W65 to rear-panel EXT TSET DRIVE RF OUT (J6)
a. SR = semirigid coaxial cable.