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Step 18.
Install Some Bottom-Side (Test Set) Cables
Follow instructions carefully when making cable connections, especially wire harness
CAUTION
connections. Incorrect connections can destroy components, resulting in additional customer
costs.
Be careful not to damage the center pins of the semirigid cables. Some flexing of the cables may
CAUTION
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
CAUTION
panel bulkhead connectors. On these, use a 9 mm nutsetter or open end torque wrench set to
21 in-lb.
Install the Semirigid Cables
To see an image showing the location of these cables, click the Chapter 6 bookmarks "Bottom RF Cables, 4-Port
Configuration, Option 419" in the PDF Service Guide
Install the following new cables in the order listed.
• W69 (reuse) (N5247-20112) A27 mixer brick to EXT TSET DRIVE LO OUT (J5)
• W66 (reuse) (N5247-20109) W65 to rear-panel EXT TSET DRIVE RF OUT (J6)
• W68 (reuse) (N5247-20088) Rear-panel port RF2 OUT (J12) to W67
• W123 (N5247-20020) Port 2 RCVR B IN to A49 port 2 receiver attenuator
• W46 (reuse) (N5247-20019) A36 port 2 coupler to front-panel port 2 CPLR ARM
• W115 (N5247-20027) Port 2 CPLR THRU to A45 port 2 bias tee
• W114 (N5247-20034) A41 port 2 source attenuator to front-panel port 2 SOURCE OUT
• W112 (N5247-20029) A44 port 4 bias tee to A35 port 4 coupler
1. See
"Downloading the Online PNA Service Guide" on page
22
1
. New parts are listed in
5.
Table 1 on page
7.
Installation Note N5247-90103
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