490 Keysight Technologies N9040B UXA Signal Analyzer Service Guide
Post-Repair Procedures
SW3
Low Noise Path
Switch
(Option LNP)
Frequency Response (all tests)
Reset Low Noise Path switch using software utility
Characterize Noise Floor (Press System,
Alignments, Advanced)
Frequency Response (all tests)
Effective DANL
a. Calibration Application Software is required for all performance tests and most adjustments. For details
go to http://www.keysight.com/find/calibrationsoftware
b. See the Additional Tasks section in this chapter for detailed instructions on this task.
c. To set the instrument time and date press Start, Control Panel, Date Time Language and
Regional Options, Date and Time
d. Before replacing the A5 Disk Drive, see the “Calibration Data Backup and Restore” section in this chap-
ter for details.
e. See Chapter 17, “Instrument Software” for instructions on updating the instrument software to the lat-
est version.
f. The 50 MHz and 4800 MHz Calibrator Amplitude Adjustments must be done prior to Frequency
Response Adjustments.
Some Adjustment tests may be found in the Utility portion of the Test Plan.
Table 16-1 Post-Repair Testing Requirements (Continued)
Assembly
Adjustments to Perform
(in the order listed)
a
Performance Verifications to Perform After
Adjustments
a
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