17-46 SCPI Command Reference Models 2500 and 2502 User’s Manual
Data elements
ELEMents <item list>
:FORMat:ELEMents [SENSe] <item list> Specify data elements for data string
Parameters <item list> = CURRent[1] Includes channel 1 current reading
CURRent2 Includes channel 2 current reading
TIME Includes timestamp
STATus Includes status information
NOTE Each item in the list must be separated by a comma (i.e., CURR1, CURR2,
TIME).
Query :ELEMents? Query elements in data string
Description This command is used to specify the elements to be included in the data
string in response to the following queries:
:FETCh?
:READ?
:MEASure?
:TRACe:DATA?
You can specify from one to all four elements. Each element in the list
must be separated by a comma (,). These elements (shown in
Figure 17-1) are explained as follows:
NOTE An overflow reading reads as +9.9E37.
CURRent[1] — This element provides the channel 1 current reading. If
no reading is available, the NAN (not a number) value of +9.91e37 is
used.
CURRent2 — This element provides the channel 2 current reading. If
no current reading is available, the NAN (not a number) value of
+9.91e37 is used.
TIME — A timestamp is available to reference each group of readings
to a point in time. The relative timestamp operates as a timer that starts
at zero seconds when the instrument is turned on or when the relative
timestamp is reset (:SYSTem:TIME:RESet). The timestamp for each
reading sent over the bus is referenced, in seconds, to the start time.
After 99,999.999 seconds, the timer resets to zero and starts over.
Timestamp is also available for buffer readings. Timestamp can be refer-
enced to the first reading stored in the buffer (absolute format) which is
timestamped at 0 seconds, or can provide the time between each reading
(delta format). The :TRACe:TSTamp:FORMat command is used to
select the absolute or delta format.
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