456 Keysight NFA Series Noise Figure Analyzers Service Guide
Assembly Replacement Procedures
Input Connector Assembly
Replacement
1. Refer to Figure 15-50. Place the Input Connector Assembly (2) into
position in the chassis. Replace the two screws (1) to attach the Input
Connector Assembly to the chassis. Torque to 9 inch-pounds.
2. Reconnect the semi-rigid cable W10 to the Input Connector Assembly.
Torque to 10 inch-pounds.
3. Place the gusset (5) in position and replace the three screws (4) that
attach it to the chassis. Torque to 9 inch-pounds.
4. Replace the Front Frame Assembly. Refer to the “Front Frame Assembly”
replacement procedure.
5. Replace the instrument outer case. Refer to the “Instrument Outer Case”
replacement procedure.
Make sure that the O-ring
(3) is installed correctly on the input connector.
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