142 N9030B PXA Signal Analyzer Service Guide
Instrument Messages
Condition Messages
Condition Errors 501 to 599, Frequency
This series of errors corresponds to the bits in the
STATus:QUEStionable:FREQuencyr register. The second column in the table
shows the corresponding bit.
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 seen 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. See
section “Condition Errors 601 to 699, Error Summaries” on page 143.
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 External ref missing or
out of range
E The external frequency reference signal
is missing or is not within the proper
amplitude range.
In the PSA, this error was reported as
error 622
523 11 unused
525 12 unused
527 13 unused
529 14 unused
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