438 Keysight Technologies N9040B UXA Signal Analyzer Service Guide
Assembly Replacement Procedures
A28 Wideband Extension Board (Option RTS)
2. Refer to Figure 15-83. Place the W28 Wideband Extension board into the
chassis in the position shown. Attach to the chassis with the three screws
(1). Torque to 9 inch-pounds.
3. Refer to Figure 15-87. Connect the flex circuit cables to the Wideband
Digital boards in the card cage. If the UXA has only the top WB DIF board,
connect the flex circuit cable from the Wideband Extension J1 to the
connector on the WB Digital IF assembly.
If the UXA has two WB Digital IF boards, connect the flex circuit attached
to the Wideband Extension J2 (J2 is connector is on the edge of the
Wideband Extension) to the bottom WB Digital IF board in the card cage.
Connect the other flex circuit from the WB Digital IF Extension J1 to the
top WB Digital IF board in the card cage.
Figure 15-87 Wideband Extension Board Connectors
4. Replace the RF panel as described on pages page 433 and page 434.
5. Replace the top brace. Refer to the “Top Brace and Card Cage Brace”
replacement procedure.
6. Replace the instrument outer case. Refer to the “Instrument Outer Case”
replace procedure.
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