HP 53150A Series Programming Manual page 169

Chapter 5 Errors
Error Types
Execution errors are reported by the Counter after rounding and
expression evaluation operations have been taken place. Rounding a
numeric data element, for example, is not reported as an execution error.
Events that generate execution errors do not generate command errors,
device-specific errors, or query errors.
Device- or Counter-Specific Error
An <error number> in the range [−300 to −399] or [+1 to +32767]
indicates that the Counter has detected an error that is not a command
error, a query error, or an execution error; some Counter operations did
not properly complete, possibly due to an abnormal hardware or firmware
condition. These codes are also used for self-test response errors. The
occurrence of any error in this class causes the device-specific error bit (bit
3) in the Event Status Register to be set.
Query Error
An <error number> in the range [−400 to −499] indicates that the output
queue control of the Counter has detected a problem with the message
exchange protocol. The occurrence of any error in this class causes the
query-error bit (bit 2) in the Event Status Register to be set. This means
that one of the following conditions exists:
•
An attempt is being made to read data from the output queue when no
output is either present or pending.
•
Data in the output queue was lost.
Error List
Table 5-2 lists and describes the error messages generated by the HP
53150A/151A/152A Counters.
Programming Guide 5-7