Math; Mx+B - Keithley 3700 series Reference Manual

Series 3700 System Switch/Multimeter Reference Manual
dmm.reset('active')
dmm.rel.level=1e-6
dmm.rel.enable = dmm.ON
dmm.configure.set("myconfig")
dmm.setconfig("1001:1030", "myconfig")
scan.create('1001:1030")

Math

The Series 3700 has three built-in math calculations that are accessed from the MATH menu:
mX+b, percent, and reciprocal (1/X).
NOTE
NOTE

mX+b

This math operation lets you manipulate normal display readings (X) mathematically according
to the following calculation:
Where:



NOTE
mX+b REL
The mX+b function can be used to manually establish a REL value. To do this, set the scale
factor (M) to 1 and set the offset (b) to the REL value. Each subsequent reading will be the
difference between the actual input and the REL value (offset).
Document Number: 3700S-901-01 Rev. A / August 2007
The settings shown in the menu tree are the factory default settings.
The various instrument operations, including Math, are performed on the input signal
in a sequential manner.
X is the normal display reading.
m and b are the user-entered constants for scale factor and offset.
Y is the displayed result.
The REL'ed reading of the input signal (if using REL) is used by the mX+b calculation.
Section 5: Relative, Math, and dB
Reset DC volts only.
Set the rel level.
Enable REL.
Call the configuration myconfig.
Set Channels 1001 to 1030 to use
myconfig configuration.
Create scan list of channels 1001 to
1030 using myconfig.
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