HP 83751A User Manual page 214

Error Messages
-226
Lists not same length.
Attempted to use LIST structure having individual LIST's of
unequal lengths.
-230
Data corrupt or stale
Possibly invalid data; new reading started but not completed since
last access.
-231
Data questionable
Indicates that measurement accuracy is suspect.
-240
Hardware error
Indicates that a legal program command or query could not be
executed because of a hardware problem in the device. Dehnition
of
what constitutes a hardware problem is completely device-specik
This error message should be used when the
the
more specihc errors described for errors -241 through -249.
-241
Hardware missing
Indicates that a legal program command or query could not be
executed because of missing
option was not installed. DeEnition of what constitutes missing
hardware is completely device-specihc.
-260
Expression error
Indicates that a expression program data element related error
occurred. This error message should be used when the device
cannot detect the more specilic errors described for errors -261
through -269.
device
device
hardware; for example, an
cannot detect