User Manual

18-114 SCPI Command Reference 2400 Series SourceMeter
®
User’s Manual
TRACe subsystem
The commands in this subsystem are used to configure and control data storage into
the buffer. The commands are summarized in Table 18-10.
:TRACe|:DATA
The bar (|) indicates that :TRACe or :DATA can be used as the root command for this
subsystem. From this point on, the documentation in this manual uses :TRACe. If you
prefer to use :DATA, simply replace all the :TRACe command words with :DATA.
Read and clear buffer
DATA?
:TRACe:DATA? Read contents of buffer
Description When this command is sent and the SourceMeter is addressed to
talk, all the readings stored in the data store are sent to the com
-
puter.
The format used to send readings over the bus is controlled from the
:FORMat subsystem.
NOTE See Appendix C, “Data Flow,” for a detailed explanation on how data flows
through the various operation blocks of the SourceMeter. It clarifies the types
of readings that are acquired by the various commands to read data.
CLEar
:TRACe:CLEar Clear buffer
Description This action command is used to clear the buffer of readings. If you do
not clear the buffer, a subsequent store will overwrite the old read
-
ings.
Configure and control buffer
FREE?
:TRACe:FREE? Read status of memory
Description This command is used to read the status of storage memory. After
sending this command and addressing the SourceMeter to talk, two
values separated by commas are sent to the computer. The first
value indicates how many bytes of memory are available, and the
second value indicates how many bytes are reserved to store read
-
ings.