# :CHANnel:THReshold:RFALl:LOWer

:CHANnel Threshold Commands

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

## Command Syntax

    :CHANnelN:THReshold:RFALl:LOWer  <amplitude>

<amplitude> is a double.

Where N identifies a specific channel in the form "<connection1-8>_<ch1-8>". With connection 1, the connection number part (that is, "1_") is optional, and you can simply use the channel number "<ch1-8>". For example, connection 4 channel 2 is `CHANnel4_2`.

## Query Syntax

    :CHANnelN:THReshold:RFALl:LOWer?

## Description

Sets or queries the Rise/Fall threshold's lower threshold-definition level. This value is used when making measurements with custom threshold definitions that are based on absolute amplitude. When custom threshold definitions are based on percent, use the `:CHANnel:THReshold:RFALl:PLOWer` command.

Use the `:CHANnel:THReshold:RFALl:METHod` command to set waveform threshold levels to standard percentages or custom definitions.

Use the `:CHANnel:THReshold:RFALl:UPPer` command to enter a upper threshold level.

## Example Command Sequence

    :CHANnel1_2:THReshold:RFALl:TRACking OFF
    :CHANnel1_2:THReshold:RFALl:METHod ABSolute
    :CHANnel1_2:THReshold:RFALl:UPPer 125E-3
    :CHANnel1_2:THReshold:RFALl:LOWer -125E-3