CALCulate:MATH
CALCulate:MATH <expression>, (@<computed_ch_list>)
CALCulate:MATH? (@<computed_ch_list>)
A computed channel performs mathematical operation on the readings from measurement channels, or other com-
puted channels list. Selects type of <expression> to specify the mathematical operation, and the operand channels
that are used for computing.
Only supported on computed channels (channels 401 through 420).
Computation type Mathematical operation Parameter (<
expression
>) Typical return
Basic math Add (@chan1+@chan2) (none)
Subtract (@chan1-@chan2)
Multiply (@chan1*@chan2)
Divide (@chan1/@chan2)
Power (power(@chan1, 2))
Square root (sqrt(@chan1))
Reciprocal (1/@chan1)
Polynomial Fifth order (poly(@chan1, <n5>, <n4>, <n3>, <n2>, <n1>, <n0>))
where n = value of variable in each order
Statistics Min (min(@<ch_list>))
Max (max(@<ch_list>))
Sum (sum(@<ch_list>))
Average (avg(@<ch_list>))
Standard deviation (sdev(@<ch_list))
Basic math examples:
Selects math operation (add), and operand channels (channel 101 and 102) that are used for computing in channel
401:
CALC:MATH (@101+@102),(@401)
Typical response: "(@101+@102)"
In this example, you can replace the (@101+@102) with (@101-@102), (@101*@102), and (@101/@102) for
subtract, multiply, and divide operations.
Selects math operation (power), and operand channels (channel 101) that are used for computing in channel 401:
CALC:MATH (power(@101, 2)),(@401)
Typical response: "(power(@101, 2))"
Keysight DAQ970A/DAQ973A Programming Guide 71
2 SCPI Programming
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