Keithley 2790, Reference Manual

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Model 2790 SourceMeter
®
Switch System Reference Manual 5-15
Remote programming — math
Math commands
klqb
When measurements are performed, the readings are fed to other enabled
processing operations, including Math.
Appendix C explains data flow and the
commands used to return Math results.
The commands to perform math calculations are listed in Table 5-2 . Details on these com-
mands follow the table.
klqb
Queries are not included in Table 5-2 . All the math commands are provided in
Table 15-1 .
Table 5-2
Math commands
Commands
1
Description Def
CALCulate[1]:FORMat <name> [, <clist>] Select calculation; <name> = NONE, MXB
(mX+b), PERCent, RECiprocal (m/X+b),
S1Iohms, S2Iohms, S1Vohms, or S2Vohms.
PERC
CALCulate[1]:KMATh:MMFactor <NRf> [, <clist>] Set “m” factor for mX+b and m/X+b;
<NRf> = -4294967295 to +4294967295. 1
CALCulate[1]:KMATh:MBFactor <NRf> [, <clist>] Set “b” factor for mX+b and m/X+b;
<NRf> = -4294967295 to +4294967295. 0
CALCulate[1]:KMATh:MBFactor:TRACk <b> Enable or disable source tracking
3
. OFF
CALCulate[1]:KMATh:MBFactor:SOURce <name> Selects source to be tracked; <name> = NONE,
S1ISource, S2ISource, S1VSource, S2VSource.
NONE
CALCulate[1]:KMATh:MUNits <char> [, <clist>] Set units for mX+b and m/X+b; see “Setting
mX+b and m/X+b units”.
‘X’
CALCulate[1]:KMATh:PERCent <NRf> [, <clist>] Set reference value for percent; <NRf> =
-4294967295 to +4294967295.
1
CALCulate[1]:KMATh:PERCent:ACQuire Use input signal as reference value.
CALCulate[1]:STATe <b> [, <clist>] Enable or disable calculation; <b> = ON or OFF. (Note 2)
CALCulate[1]:DATA[:LATest]? Return last result of calculation.
CALCulate[1]:DATA:FRESh? Return last “fresh” result of calculation.
Channel list parameter:
7702 <clist> = (@SCH)
where: S = Mainframe slot number (1 or 2)
CH = Switching module channel number (must be 2 digits)
7751/7752/7753 <clist> (DCV,
Ω
2,
Ω
4) = (@Mn) (see “Memory patterns,” page 2-36 ).
1. The <clist> parameter is used to configure one or more 7702 channels for a scan.
2. *RST default is ON, SYSTem:PRESet is OFF.
3. Selecting an ohms calculation enables source tracking. Selecting any other math function disables source tracking.