Keysight Technologies N5224AU-401, Installation Note

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Installation Note N5225-90105 11
Step 4. Remove Some Existing Cables
CAUTION
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.
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 4-Port Configuration, Option 400” in the PDF Service Guide
1
.
These cables may be discarded - they will not be reinstalled.
• W107 (N5224-20005) A29 port 1 receiver coupler to A27 mixer brick (R1)/3-dB pad
• W108 (N5224-20024) A30 port 3 receiver coupler to A28 mixer brick (R3)
• W109 (N5224-20027) A31 port 4 receiver coupler to A28 mixer brick (R4)/3-dB pad
• W110 (N5224-20028) A32 port 2 receiver coupler to A27 mixer brick (R2)
• W111 (N5224-20013) A29 port 1 receiver coupler to A33 port 1 coupler
• W112 (N5224-20015) A30 port 3 receiver coupler to A34 port 3 coupler
• W113 (N5224-20016) A31 port 4 receiver coupler to A35 port 4 coupler
• W114 (N5224-20014) A32 port 2 receiver coupler to A36 port 2 coupler
• W115 (N5224-20022) A33 port 1 coupler to A27 mixer brick (A)
• W116 (N5224-20023) A34 port 3 coupler to A28 mixer brick (C)
• W117 (N5224-20026) A35 port 4 coupler to A28 mixer brick (D)
• W118 (N5224-20025) A36 port 2 coupler to A27 mixer brick (B)
These cables must be saved - they will be reinstalled.
• W12 (N5245-20109) A29 port 1 receiver coupler to W11
• W14 (N5245-20043) A30 port 3 receiver coupler to W13
• W16 (N5245-20044) A31 port 4 receiver coupler to W15
• W18 (N5245-20111) A32 port 2 receiver coupler to W17
Step 5. Remove a 3 dB Pad
Remove and discard the 3 dB pad connected to A27 mixer brick port R1.
1. See “Downloading the Online PNA Service Guide” on page 5 .