Trace Subsystem - Keithley 6430 Instruction 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 17-9.
:TRACe|:DATA
The bar (|) indicates that :TRACe or :DATA can be used as the root command for this sub-
system. 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?
Description
NOTE
:CLEar
:TRACe:CLEar
Description
Configure and control buffer
:FREE?
:TRACe:FREE?
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 computer.
The format used to send readings over the bus is controlled from the
:FORMat subsystem.
See Appendix C 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.
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 readings.
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 readings.
SCPI Command Reference
Read contents of buffer
Clear buffer
Read status of memory
17-99