76 Keysight N9010B EXA Signal Analyzer 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