Keysight N8973B User Manual

474 Keysight NFA Series Noise Figure Analyzers Service Guide
Post-Repair Procedures
Post-Repair Procedures
A9 & A10
RF Attenuators
Hardware Statistical Reset Utility
50 MHz Calibrator Adjustment
Frequency Response (All Adjustments)
Attenuator Slope
Attenuator Slope, Preamp On
Residual Responses
Displayed Average Noise Level
Spurious Responses
Third Order Intermodulation
Absolute Amplitude Accuracy
Input Attenuation Switching Uncertainty
Frequency Response (All Tests)
A11
Low Band Switch
Frequency Response (All Tests)
Attenuator Slope
Attenuator Slope, Preamp On
Residual Responses
Displayed Average Noise Level
Spurious Responses
Third Order Intermodulation
Second Harmonic Distortion
Absolute Amplitude Accuracy
Frequency Response (All Tests)
A12
YTF Preselector
YTF Alignment (Press
System,
Alignments, Ad vanced,
Characterize Preselector)
Frequency Response (All Adjustments)
Attenuator Slope
Attenuator Slope, Preamp On
Residual Responses
Displayed Average Noise Level
Spurious Responses
Third Order Intermodulation
Second Harmonic Distortion
Absolute Amplitude Accuracy
Frequency Response (All Tests)
A13
Front End
Assembly
Frequency Response (All Tests)
Attenuator Slope
Attenuator Slope, Preamp On
Residual Responses
Displayed Average Noise Level
Spurious Responses
Third Order Intermodulation
Second Harmonic Distortion
Absolute Amplitude Accuracy
Frequency Response (All Tests)
A14
L.O. Synthesizer
Assembly
FPGA Synchronization
b
Residual Responses
Displayed Average Noise Level
Spurious Responses
Phase Noise (All Tests)
Frequency Response (All Tests)
A15
Front End Control
Assembly
FPGA Synchronization
b
YTF Alignment (Press System,
Alignments, Ad vanced,
Characterize Preselector)
Front End Controller Attenuator Adjustment
(Option CR3 or CRP)
Residual Responses
Displayed Average Noise Level
Absolute Amplitude Accuracy
Frequency Response (All Tests)
Table 16-1 Post-Repair Testing Requirements (Continued)
Assembly
Adjustments to Perform
(in the order listed)
a
Performance Verifications to Perform After
Adjustments
a

Keysight N8973B Specifications

General

Brand	Keysight
Model	N8973B
Category	Measuring Instruments
Language	English