Features and Functions
3
Keysight 34980A Mainframe User’s Guide
187
Querying the Sequence Definition
Once you have defined a sequence, you can query the definition to review what
SCPI commands have been assigned. Although sequences can be defined from
the remote interface only, you can review them from the front panel.
– The exact text specified in the original sequence definition is not preserved
when the sequence is compressed/stored in memory. Therefore, the string
returned may not be identical to the original string, but it will be functionally
equivalent. If the specified sequence name is not currently stored in memory,
an error is generated.
– The query command always returns the short form of the command header in
all upper-case letters (e.g., “ROUT:CLOS” is returned instead of
“ROUTE:CLOSE”). Channel numbers and channel range specifiers are returned
as they were specified.
Front Panel Operation:
Sequence > VIEW
Remote Interface Operation:
The following command returns a string
containing the SCPI commands assigned to the specified sequence.
ROUT:SEQ:DEF? MYSEQ_1
The above command returns a string in the form (the quotes are also returned):
":ROUT:CLOS (@1001:1009);:ROUT:OPEN (@2001)"
Executing a Sequence
After you have defined a valid sequence, you can execute it to process the
specified commands. If the specified sequence name is not currently stored in
memory, an error will be generated.
– If you attempt to trigger a sequence while one is already executing, the trigger
will be placed in a queue. When the trigger queue is full, a “trigger ignored”
error will be generated.
– To abort a sequence execution from the remote interface, use the
ROUTe:SEQuence:ABORt
command or a
Device
Clear
. When the sequence
is terminated, the resultant instrument state will be determined by how of the
sequence had been executed when the
ABORt/Device
Clear
was received.
An
ABORt
command (system abort) executed from within a sequence will not
