Read and clear one error from the instrument’s error queue.
A record of up to 30 command syntax or hardware errors can be stored in the error
queue. Errors are retrieved in first-in-first-out (FIFO) order. The first error returned is
the first error that was stored. Errors are cleared as you read them.
If more than 30 errors have occurred, the last error stored in the queue (the most
recent error) is replaced with “Queue overflow”. No additional errors are stored until
you remove errors from the queue.
If no errors have occurred when you read the error queue, the instrument responds
with 0,“No error”.
The error queue is cleared by the *CLS command, when the power is cycled, or
when the Soft Front Panel is re-started.
The error queue is not cleared by a reset (*RST) command.
The error messages have the following format (the error string may contain up to 255
characters):
error number,”Description”, e.g.
-113,”Undefined header”.
The HEADers? query returns all SCPI commands and queries and IEEE 488.2
common commands and common queries implemented by the instrument. The
response is a <DEFINITE LENGTH ARBITRARY BLOCK RESPONSE DATA> element.
The full path for every command and query is returned separated by linefeeds. The
syntax of the response is defined as: The <nonzero digit> and sequence of <digit>
follow the rules in IEEE 488.2, Section 8.7.9. A <SCPI header> is defined as: It
contains all the nodes from the root. The <SCPI program mnemonic> contains the
node in standard SCPI format. The short form uses uppercase characters while the
additional characters for the long form are in lowercase characters. Default nodes
are surrounded by square brackets ([]).
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