17-46 SCPI Command Reference
During binary transfers, never un-talk the SourceMeter until after the data is
read (input) to the computer. Also, to avoid erratic operation, the readings of
the data string (and terminator) should be acquired in one piece. The header
(#0) can be read separately before the rest of the string.
The number of bytes to be transferred can be calculated as follows:
Bytes=2+(Rdgs × 4) + 1
where 2 is the number of bytes for the header (#0).
Rdgs is the product of the number of selected data elements, arm
count, and trigger count.
4 is the number of bytes for each reading.
is the byte for the terminator.
For example, assume the SourceMeter is configured to perform 10 source-
measure operations and send the 10 current measurements to the computer
using the binary format.
Bytes = 2 + (10 × 4) + 1
= 43
Data elements
:ELEMents <item list>
:FORMat:ELEMents [SENSe[1]] <item list> Specify data elements for data string
Parameters <item list> = VOLTage Includes voltage reading
CURRent Includes current reading
RESistance Includes resistance reading
TIME Includes timestamp
STATus Includes status information
NOTE Each item in the list must be separated by a comma (i.e., :ELEMents, VOLTage,
CURRent, RESistance).
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 five 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.
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