HP 83751A - Miscellaneous Hardware Dependent Errors

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Error Messages
Miscellaneous Hardware Dependent Errors
901
902
-221, “Setting conflict;FNCW: Instrument Not In CW Mode(901)”
-300, “Device specific error;Need Same Attenuator Settings In
Alt Sweep Mode(902)”
When using the Alternate Sweep feature, the attenuator settings
must be the same. This prevents the attenuator from being
continuously switched between two different attenuation values.
903
-300, “Device specific error;Bad Sweep Mode, Alternate Sweep
Rejected(903)”
The instrument cannot sweep alternately with a stepped sweep as
one of the sweep types.
904
-300, “Device specific error;Bad Magic Numbers in MM
Head(904)”
The instrument will attempt to read known constants from
predelined memory locations in the mm-wave source module
NOVRAM (non-volatile RAM and ROM). An error condition occurs
if the constants are not read back correctly, and the instrument
reverts back to its stand-alone mode.
905
-300, “Device specific error;Bad Checksum in MM Head(905)”
The error condition occurs when the checksum test fails on the
mm-wave source module NOVRAM. If the error occurs at power up
or instrument preset, instrument will revert back to stand-alone
mode.
906
-300, “Device specific error;MM Head ALC Test Failed(906)”
The test checks the overall integrity of the mm-wave source source
module ALC circuitry at minimum settable power for the specific
module.
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