Keysight NFA Series Noise Figure Analyzers Service Guide 429
Assembly Replacement Procedures
Reference Assembly
Reference Assembly
Removal
1. Remove the instrument outer case. Refer to the “Instrument Outer Case”
removal procedure.
2. Remove the four flathead screws securing the top brace to the Reference
Assembly.
3. Remove the rear panel. Refer to the “Rear Panel” removal procedure.
4. Refer to Figure 15-30. Remove cables W5, W6, W12, W14, W19, W20, and
W23 from the reference assembly (1). Use the 5/16 inch wrench where
necessary.
Figure 15-30 Reference Board Cables
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