Agilent 34980A Multifunction Switch/Measure Unit *34980-90005*
Agilent 34980A Multifunction Switch/Measure Unit *34980-90005*
Agilent 34980A Multifunction Switch/Measure Unit *34980-90005*
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3 Features and Functions<br />
A sequence may invoke another sequence, but may not invoke itself<br />
recursively. In addition, the number of invocations is limited to four<br />
levels of nesting and this is enforced at the time of execution.<br />
Exceeding the limit will abort the sequence and an error will <br />
be generated.<br />
At the time of sequence definition, a sequence may reference another<br />
undefined sequence; however, at the time of execution an error will be<br />
generated if an undefined sequence is invoked.<br />
Up to 500 unique sequences can be stored in non- volatile memory.<br />
Each sequence is limited to 1024 bytes.<br />
While a scan is running (see “Scanning” on page 108), the instrument<br />
prevents use of all channels in banks that contain one or more<br />
channels in the specified scan list (these channels are dedicated to <br />
the scan). Therefore, if a sequence attempts to operate a channel in <br />
a scanned bank, an error is generated and the entire sequence will <br />
be discarded.<br />
If the command overlap function is enabled, all switching operations<br />
within the sequence follow the overlapping rules. If the command<br />
overlap function is disabled, all commands within the sequence are<br />
processed in a serial fashion in the exact order in which they are<br />
received. Note, however, that within a single command containing a<br />
parameter (e.g., ROUT:CLOSE (@1001:1010)), the order of the<br />
individual switch operations is not guaranteed.<br />
Remote Interface Operation: The following command defines a sequence<br />
named “MYSEQ_1”, which closes several channels on the module in slot 1<br />
and opens a single channel on the module in slot 2.<br />
ROUT:SEQ:DEF MYSEQ_1,"ROUT:CLOS (@1001:1009);OPEN (@2001)"<br />
142 <strong>Agilent</strong> <strong>34980A</strong> Mainframe User’s Guide