# :MEASure:THReshold:EREFerence

Threshold Definition Commands

- :MEASure:TBASe:GENeral:BASE
- :MEASure:TBASe:GENeral:METHod
- :MEASure:TBASe:GENeral:TOP
- :MEASure:TBASe:RFALl:BASE
- :MEASure:TBASe:RFALl:METHod
- :MEASure:TBASe:RFALl:TOP
- :MEASure:THReshold:EREFerence
- :MEASure:THReshold:GENeral:HYSTeresis
- :MEASure:THReshold:GENeral:LOWer
- :MEASure:THReshold:GENeral:METHod
- :MEASure:THReshold:GENeral:MIDDle
- :MEASure:THReshold:GENeral:PLOWer
- :MEASure:THReshold:GENeral:PMIDdle
- :MEASure:THReshold:GENeral:PUPPer
- :MEASure:THReshold:GENeral:UPPer
- :MEASure:THReshold:PAM:GENeral:HYSTeresis
- :MEASure:THReshold:PAM:GENeral:LMEThod
- :MEASure:THReshold:PAM:GENeral:METHod
- :MEASure:THReshold:PAM:GENeral:PAMLevel:LEVel{N}
- :MEASure:THReshold:PAM:GENeral:THResholds:EYE{N}
- :MEASure:THReshold:PAM:RFALl:LMEThod
- :MEASure:THReshold:PAM:RFALl:METHod
- :MEASure:THReshold:PAM:RFALl:PAMLevel:LEVel{N}
- :MEASure:THReshold:RFALl:LOWer
- :MEASure:THReshold:RFALl:METHod
- :MEASure:THReshold:RFALl:PLOWer
- :MEASure:THReshold:RFALl:PUPPer
- :MEASure:THReshold:RFALl:UPPer

## Command Syntax

    :MEASure:THReshold:EREFerence {TBASe | OZERo}

## Query Syntax

    :MEASure:THReshold:EREFerence?

## Description

Sets the reference used to when establishing custom threshold definitions.

TBASe
  Selects custom levels based on Vtop (100%) and Vbase (0%). When `TBASe` is selected, use the `:MEASure:TBASe:GENeral:METHod` command if you want to define custom the top and base levels.
OZERo
  Selects custom levels based on one and zero levels.

## Example Command Sequence

    :MEASure:THReshold:EREFerence OZERo