User manual

Series 3700 System Switch/Multimeter Reference Manual Section 6: Relative, Math, and dB
3700S-901-01 Rev. C / July 2008 6-3
Scanning
When a scan is configured, each channel can have its own unique REL value.
For remote programming, the <ch_list> parameter is used to configure
channels for a scan.
For example:
To attach a 1µV REL level to a desired configuration, send the following
commands:
-- Select DC volts function.
dmm.func = 'dcvolts'
-- Reset DC volts only.
dmm.reset('active')
-- Set the rel level.
dmm.rel.level=1e-6
-- Enable REL.
dmm.rel.enable = dmm.ON
-- Call the configuration myconfig.
dmm.configure.set('myconfig')
-- Set Channels 1001 to 1030 to use myconfig configuration.
dmm.setconfig('1001:1030', 'myconfig')
-- Create scan list of channels 1001 to 1030 using
myconfig.
scan.create('1001:1030")
Math calculations
The Series 3700 has three built-in math calculations that are accessed from the
MATH menu: mX+b, percent, and reciprocal (1/X). The settings shown in the
menu tree are the factory default settings.
NOTE The various instrument operations, including Math, are performed on
the input signal in a specific, predetermined order. For example, if
both REL and MXB (a math operation) are enabled, the REL
operation will always be performed before MXB.