Keysight N8973B User Manual

76 Keysight NFA Series Noise Figure Analyzers Service Guide
Instrument Messages
Advisory Messages
Freq Scale Type=Log is
not available in Zero
Span
Logarithmic scaling cannot be used for time domain sweeps (0 Hz span)
Frequency Hopping
enabled, waiting for
valid burst
The demodulated burst type has not been found in the originally demodulated slot
location within the frame
Frequency menu has
changed to reflect
frequency context switch
The frequency context parameter has been changed either by the user or the
system. The frequency menu will now contain the frequencies for the new context.
No action required
Gate required for valid
results
High-pass and Low-pass
filters set to OFF
Turning on any band pass filter will turn off high-pass and low-pass filters
High-pass filter set to
OFF
Turning on any band pass filter will turn off high-pass filters
IF Fixed freq should be
greater than LO Stop freq
The setup frequencies break the rules for an upconverter measurement. The
measurement will still run, but check setup frequencies are correct before
continuing. The IF fixed freq should be greater than the LO Stop freq for a USB
upconverter swept LO setup. Use the graph icon on the DUT setup form to clarify
the setup required
IF Fixed freq should be
greater than RF Stop freq
The setup frequencies break the rules for an upconverter measurement. The
measurement will still run, but check setup frequencies are correct before
continuing. The IF fixed freq should be greater than the RF Stop freq for an
upconverter swept LO setup. Use the graph icon on the DUT setup form to clarify
the setup required
IF Start freq should be
greater than LO Fixed
freq
The setup frequencies break the rules for an upconverter measurement. The
measurement will still run, but check setup frequencies are correct before
continuing. The IF start freq should be greater than the LO fixed freq for an USB
upconverter fixed LO setup. Use the graph icon on the DUT setup form to clarify the
setup required
IF Start freq should be
greater than RF Start
freq
The setup frequencies break the rules for an upconverter measurement. The
measurement will still run, but check setup frequencies are correct before
continuing. The IF start freq should be greater than the RF Start freq for an
upconverter fixed LO setup. Use the graph icon on the DUT setup form to clarify the
setup required
Input is internal The instrument’s input is set to internal (the internal amplitude reference signal). So
any signals connected to the front/rear panel inputs cannot be measured
LO Fixed freq should be
greater than IF Stop freq
The setup frequencies break the rules for an upconverter measurement. The
measurement will still run, but check setup frequencies are correct before
continuing. The LO fixed freq should be greater than the IF Stop freq for an LSB
upconverter fixed LO setup. Use the graph icon on the DUT setup form to clarify the
setup required
Message Description/Correction Information

Keysight N8973B Specifications

General

Brand	Keysight
Model	N8973B
Category	Measuring Instruments
Language	English