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Installation Procedure for the Upgrade
Step 22. Install the Test Set Cables
Follow instructions carefully when making cable connections, especially
wire harness connections. Incorrect connections can destroy components,
resulting in additional customer costs.
Be careful not to damage the center pins of the semi-rigid cables. Some
flexing of the cables may be necessary but do not over-bend them.
Use a 5/16-in torque wrench set to 10 in-lbs on all cable connections
except the front and rear panel bulkhead connectors. On these, use a 9
mm nutsetter or open end torque wrench set to 21 in-lb.
Flexible Cables Required for Upgrading to an Option 422 PNA
Install the following flexible cables in the order listed. To see images showing
the location of these cables, click either of the Chapter 6 bookmarks "Bottom
RF Cables, 4-Port, Option 422" in the PDF Service Guide
in
— W62 (N5242-60021) A27 mixer brick (R1) to A24 IF multiplexer (P411)
— W63 (N5242-60022) A27 mixer brick (R2) to A24 IF multiplexer (P412)
Semi-rigid Cables Required for Upgrading to an Option 422 PNA
PNAs with Option 029 have some additional cables that replace some of the
standard Option 422 (without Option 029) cables. Refer to
Required for Upgrading to an Option 422 PNA (with Option 029)" on
page 30
To see images showing the location of these cables, click the Chapter 6
bookmark "Bottom RF Cables, 4-Port, Option 422" in the PDF Service Guide
New parts are listed in
— W118 (N5245-20091) A52 port 4 mechanical switch to PORT 4 SW TSET
— W117 (N5245-20092) A52 port 4 mechanical switch to PORT 4 SW SRC
— W120 (reuse) (N5245-20062) A53 port 2 mechanical switch to A32 port 2
— W116 (N5245-20061) A52 port 4 mechanical switch to A31 port 4 reference
Installation Note N5245-90121
Table 1 on page
9.
Table 1 on page 9
and to
Table 1 on page
(J3).
OUT (J4)
reference coupler
coupler
1. See
"Downloading the Online PNA Service Guide" on page
1
"Semi-rigid Cables
.
9.
6.
. New parts are listed
1
.
25
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