# :DIFF:TBASe:RFALl:METHod

:DIFF Threshold Commands

- :DIFF:TBASe:GENeral:METHod
- :DIFF:TBASe:RFALl:METHod
- :DIFF:THReshold:GENeral:AUTO
- :DIFF:THReshold:GENeral:BASE
- :DIFF:THReshold:GENeral:COPY
- :DIFF:THReshold:GENeral:HYSTeresis
- :DIFF:THReshold:GENeral:LOWer
- :DIFF:THReshold:GENeral:METHod
- :DIFF:THReshold:GENeral:MIDDle
- :DIFF:THReshold:GENeral:PAM:ASLevels
- :DIFF:THReshold:GENeral:PAM:ASTHresholds
- :DIFF:THReshold:GENeral:PAM:PAMLevel:LEVel
- :DIFF:THReshold:GENeral:PAM:THResholds:EYE
- :DIFF:THReshold:GENeral:PLOWer
- :DIFF:THReshold:GENeral:PMIDdle
- :DIFF:THReshold:GENeral:PUPPer
- :DIFF:THReshold:GENeral:STZero
- :DIFF:THReshold:GENeral:TOP
- :DIFF:THReshold:GENeral:TRACking
- :DIFF:THReshold:GENeral:UPPer
- :DIFF:THReshold:RFALl:BASE
- :DIFF:THReshold:RFALl:COPY
- :DIFF:THReshold:RFALl:LOWer
- :DIFF:THReshold:RFALl:METHod
- :DIFF:THReshold:RFALl:PAM:ASLevels
- :DIFF:THReshold:RFALl:PAM:PAMLevel:LEVel
- :DIFF:THReshold:RFALl:PLOWer
- :DIFF:THReshold:RFALl:PUPPer
- :DIFF:THReshold:RFALl:TOP
- :DIFF:THReshold:RFALl:TRACking
- :DIFF:THReshold:RFALl:UPPer

## Command Syntax

    :DIFFN:TBASe:RFALl:METHod  {AUTO | ABSolute}

Where N identifies a specific differential waveform in the form "<connection1-8>_<ch1|ch3|ch5|ch7>". With connection 1, the connection number part (that is, "1_") is optional, and you can simply use the channel number "<ch1|ch3|ch5|ch7>". When two channels are paired to create a differential waveform and a common-mode waveform, the odd-numbered channel is used when specifying the waveform. For example, connection 5 differential waveform 3 (from the pairing of channels 3 and 4) is `DIFF5_3`.

## Query Syntax

    :DIFFN:TBASe:RFALl:METHod?

## Description

For the indicated differential waveform, selects the method used to define the waveform top and base definitions. The command is equivalent to setting the signal's Top-Base Definition in the Thresholds > Rise/Fall tab of the Configure Measurements dialog box.

AUTO
  Specifies that the top (100%) and base (0%) levels be automatically determined using a histogram of the signal's amplitude values. This is the default setting.
ABSolute
  Allows you to enter absolute values for the top-base levels. When `ABSolute` is selected, use the `:DIFF:THReshold:RFALl:TOP` and `:DIFF:THReshold:RFALl:BASE` commands to enter the signal's top and base levels.

## Example Command Sequence

    :DIFF3_1:THReshold:RFALl:TRACking OFF
    :DIFF3_1:TBASe:RFALl:METHod ABSolute
    :DIFF3_1:THReshold:RFALl:BASE -125E-3
    :DIFF3_1:THReshold:RFALl:TOP 125E-3