:DIFF:UDEFined:BASe
Command Syntax
:DIFF{1:8}{A|C}:UDEFined:BASe <amplitude>
<amplitude> is a double.
Where the required specifier {1:8}{A|C} identifies the differential channel by its module slot and channel letter. For example, the differential waveform of channels 1A and 1B would be identified as :DIFF1A.
The channel specifier will fail if it does not include a slot number. If instead the suffix's channel letter is missing, the command defaults to letter A. As a result, the best practice is to always explicitly specify the channel by including both the module slot number and channel letter.
Query Syntax
:DIFF{1:8}{A|C}:UDEFined:BASe?
Description
For the indicated differential waveform, sets or queries the custom base-level setting. The top and base levels are used to locate a waveform's lower, middle, and upper threshold levels during the following measurements: duty-cycle distortion, rise time and fall time. Specify the level in volts. Use :DIFF:UDEFined:TOP to set or query a custom top level.
Before this custom base level can be applied to measurements, use the :MEASure:TBASe:METHod command to select custom top-base definitions.
Example Command Sequence
:MEASure:TBASe:METHod UDEFined :DIFF3A:UDEFined:BASe -125E-3 :DIFF3A[:UDEFined:TOP 125E-3