Keithley 6430 Quick Results Manual page 46

Remote command programming
SCPI commands
SCPI commands for the built-in math functions are listed in Table 19.
NOTE The percent deviation math function is not provided as a built-in math function for
remote operation. However, it can be configured as a user-defined expression (see
CALCulate[1] commands
Table 20
SCPI commands; built-in math functions
Command
:CALCulate:MATH:NAME <name> Select math expression; <name> = "POWER", "OFF-
:CALCulate:STATe <b>
:CALCulate:DATA?
Programming example
The programming example in Table 20 configures the SourceMeter to operate as a power
meter (power = V x I). Programming examples for other math functions are provided in
the Model 6430 Instruction Manual (see CALCulate1 subsystem).
Table 21
Command sequence for power measurement example
Command*
*RST
:SOUR:VOLT:RANG 0.2
:SENS:FUNC "VOLT", "CURR"
:SENS:CURR:PROT 100e-3
:SENS:VOLT:RANG:AUTO ON
:SENS:CURR:RANG:AUTO ON
:CALC:MATH:NAME "POWER"
:CALC:STAT ON
:OUTP ON
:INIT
:CALC:DATA?
:OUTP OFF
*SourceMeter must be addressed to talk after sending :CALC:DATA? to acquire power reading.
in the Model 6430 Instruction Manual).
Description
COMPOHM", "VOLTCOEF" or "VARALPHA".
Enable/disable math; <b> = ON or OFF.
Query math data.
Comments
Restore GPIB defaults (source 0V, measure I).
Select the 200mV source range.
Select V and I meaurement functions.
Set current compliance to 100mA.
Select auto range for voltage measurements.
Select auto range for current measurements.
Select the power math expression.
Enable math.
Turn output on.
Trigger source-measure action.
Request power reading.
Turn output off.
Quick Results Guide 39