HP ESA-E Series Programmer's Manual page 373

Error Messages
Status Messages
(RF Align Failure) status bit only, no
message
A failure has occurred during the alignment of the RF
section. Measurement results may be invalid.
Source LO Unlevel (Source LO Unleveled)
The internal circuitry of the local oscillator (LO) in the
tracking generator has become unleveled. This
condition must be corrected to make valid
measurements.
Source LO Unlock (Source Synth Unlocked)
The phase-locked circuitry of the local oscillator (LO) in
the tracking generator has become unlocked. This
condition must be corrected to make valid
measurements.
Source Unlevel (Source Unleveled)
Indicates the source power is set higher or lower than
the analyzer can provide, the frequency span extends
beyond the specified frequency range of the tracking
generator, or the calibration data for the source is
incorrect.
(TG Align Failure) status bit only, no
message
A failure has occurred during the tracking generator
(TG) alignment.
7-6 Chapter 7