Fluke 9640A Series, Инструкция по эксплуатации

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9640A
Instruction Manual
4B-16
Error Reporting
The Instrument will place a detected error in its Error Queue. This queue is a FIFO (First-
In First-Out) buffer. When you read the queue, the first error will come out first, the last
error last.
If the queue overflows, an overflow message is placed last in the queue, and further
errors are thrown away until there is room in the queue again.
Read the Error/Event Queue
This is done with the
:SYSTem:ERRor?
query.
Example
SEND=>
:SYSTem:ERRor?
READ<=
–100,“Command-Error”
The query returns the error number followed by the error description.
If more than one error occurred, the query will return the error that occurred first. When
you read an error you will also remove it from the queue. You can read the next error by
repeating the query. When you have read all errors the queue is empty, and the
:SYSTem:ERRor? query will return:
0,“No error”
When errors occur and you do not read these errors, the Error Queue may overflow. Then
the instrument will overwrite the last error in the queue with the following:
–350,“Queue overflow”
If more errors occur, they will be discarded.
Standardized Error Numbers
The instrument reports four classes of standardized errors in the Standard Event Status
and in the Error/Event Queue as shown in the Table 4B-3.
Table 4B-3. Standardized Errors
Error Class Range of Error Numbers Standard Event Register
Command Error –100 to –199 bit 5 - CME
Execution Error –200 to –299 bit 4 - EXE
–300 to –399
Device Specific Error
+100 to +32767
bit 3 - DDE
Query Error –400 to –499 bit 2 -QYE
Command Error
This error shows that the instrument detected a syntax error.
Execution Error
This error shows that the instrument has received a valid program message which it
cannot execute because of some device specific conditions.