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Step 5. Remove Some Bottom-Side (Test Set) Cables
Be careful not to damage the center pins of the semirigid cables. Some flexing of the cables may
NOTE
be necessary but do not over-bend them.
Leave the gray flexible cables, the wire harnesses, and the ribbon cables connected where
NOTE
possible. Any that are removed should be labeled for reconnection later.
When removing a cable, also remove the plastic cable clamp, if present. It is normal for some of
NOTE
the cable clamp's adhesive to remain.
1. Place the analyzer bottom-side up on a flat surface.
2. Remove the cables in the following two lists in the order shown. To see an image showing the location of
these cables, click the Chapter 6 bookmark "Bottom RF Cables, Standard 4-Port Configuration, Option 400"
in the PDF Service Guide
These cables may be discarded - they will not be reinstalled.
• W27 (N5247-20074) A60 port 1 70 GHz doubler to A29 port 1 reference coupler
• W28 (N5247-20052) A61 port 3 70 GHz doubler to A30 port 3 reference coupler
• W29 (N5247-20074) A62 port 4 70 GHz doubler to A31 port 4 reference coupler
• W30 (N5247-20052) A63 port 2 70 GHz doubler to A32 port 2 reference coupler
• W31 (N5247-20037) A29 port 1 ref coupler to front-panel port 1 SOURCE OUT
• W32 (N5247-20016) Port 1 CPLR THRU to A33 port 1 coupler
• W33 (N5247-20078) A29 port 1 reference coupler to A37 reference mixer switch
• W35 (N5247-20023) A30 port 3 ref coupler to front-panel port 3 SOURCE OUT
• W36 (N5247-20006) Port 3 CPLR THRU to A34 port 3 coupler
• W37 (N5247-20077) A30 port 3 ref coupler to front-panel REF 3 SOURCE OUT
• W39 (N5247-20035) A31 port 4 ref coupler to front-panel port 4 SOURCE OUT
• W40 (N5247-20017) Port 4 CPLR THRU to A35 port 4 coupler
• W41 (N5247-20075) A31 port 4 ref coupler to front-panel REF 4 SOURCE OUT
• W43 (N5247-20036) A32 port 2 ref coupler to front-panel port 2 SOURCE OUT
• W44 (N5247-20018) Port 2 CPLR THRU to A36 port 2 coupler
• W45 (N5247-20076) A32 port 2 ref coupler to front-panel REF 2 SOURCE OUT
• W47 (N5247-20053) Port 1 RCVR A IN to A27 mixer brick (A)
• W48 (N5247-20063) Port 3 RCVR C IN to A28 mixer brick (C)
• W49 (N5247-20073) Port 4 RCVR D IN to A28 mixer brick (D)
1. See
"Downloading the Online PNA Service Guide" on page
12
1
.
5.
Installation Note N5247-90103
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