46 Keysight NFA Series Noise Figure Analyzers Service Guide
Boot Up and Initialization Troubleshooting
Check the Basics
Check the Basics
Before calling Keysight Technologies or returning the instrument for service,
please make the following checks:
1. Is there power at the power outlet? At the power receptacle on the
instrument?
2. Is the instrument turned on? Check to see if the front panel LED is green,
which indicates the power supply is on.
3. If other equipment, cables, and connectors are being used with the
instrument, make sure they are connected properly.
4. Review the procedure for the measurement being performed when the
problem appeared. Are all the settings correct?
5. If the instrument is not functioning as expected, return the unit to a known
state by pressing the Mode Preset key.
6. Is the measurement being performed, and the results that are expected,
within the specifications and capabilities of the instrument? Refer to the
specifications book for specifications.
7. In order to meet specifications, the instrument must be aligned. Press
System, Alignments, Align Now, Align Now All. The diagnostic tests
should all pass. If the instrument displays a failure during these tests, refer
to “Fails an Initial Alignment” on page 62.
8. Check to see if the instrument has the latest instrument software before
starting the troubleshooting procedure. Press System, Show System. The
software revision is listed under Instrument S/W Revision. For more
information, refer to Chapter 18, “Instrument Software”, on page 517.
9. Is the instrument displaying an error message? If so, refer to Chapter 3,
“Instrument Messages”, on page 69 for more information.
10.If the necessary test equipment is available, perform the functional checks
in Chapter 17, “Functional Tests”, on page 487.
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