Keysight N8976B

Keysight NFA Series Noise Figure Analyzers Service Guide 127
Instrument Messages
Condition Messages
An event with the error number shown in the table means the condition has
been detected. When the condition is cleared, an event with the error number
plus 1000 is generated. These error numbers can be viewed in the Show Errors
screen, along with the DETECTED and CLEARED indicators.
For example, error 503 indicates a Frequency Reference Unlocked condition
has been detected, error 1503 indicates that failure has been cleared.
This register is summarized as bit 5 of the STATus:QUEStionable register, as
described in the section “Condition Errors 601 to 699, Error Summaries” on
page 128.
Err# Bit in
status
register
Message Error or
Warning
More Information
501 0 Source Synth Unlocked E
503 1 Frequency Reference
Unlocked
E
505 2
2
nd
LO Unlocked
E
507 3 unused
509 4 LO Unlocked E
511 5 unused
513 6 IF Synthesizer Unlocked E
515 7 Calibration Oscillator
Unlocked
E
517 8 unused
519 9 Demodulation E
521 10 Ref missing or out of
range
E
521 10 Ref missing or out of
range; External
E The external frequency reference signal is
missing or is not within the proper
amplitude range.
In PSA, this error was reported as error
622
521 10 Ref missing or out of
range; Pulse
E The pulse reference signal is missing or is
not within the correct amplitude range.
523 11 unused
525 12 unused
527 13 unused
529 14 unused