# :NETWorks:TRACe:THReshold:GENeral:LOWer

:NETWorks:TRACe Threshold Commands

- :NETWorks:TRACe:TBASe:GENeral:METHod
- :NETWorks:TRACe:TBASe:RFALl:METHod
- :NETWorks:TRACe:THReshold:GENeral:AUTO
- :NETWorks:TRACe:THReshold:GENeral:BASE
- :NETWorks:TRACe:THReshold:GENeral:HYSTeresis
- :NETWorks:TRACe:THReshold:GENeral:LOWer
- :NETWorks:TRACe:THReshold:GENeral:METHod
- :NETWorks:TRACe:THReshold:GENeral:MIDDle
- :NETWorks:TRACe:THReshold:GENeral:PLOWer
- :NETWorks:TRACe:THReshold:GENeral:PMIDdle
- :NETWorks:TRACe:THReshold:GENeral:PUPPer
- :NETWorks:TRACe:THReshold:GENeral:STZero
- :NETWorks:TRACe:THReshold:GENeral:TOP
- :NETWorks:TRACe:THReshold:GENeral:TRACking
- :NETWorks:TRACe:THReshold:GENeral:UPPer
- :NETWorks:TRACe:THReshold:RFALl:BASE
- :NETWorks:TRACe:THReshold:RFALl:LOWer
- :NETWorks:TRACe:THReshold:RFALl:METHod
- :NETWorks:TRACe:THReshold:RFALl:PLOWer
- :NETWorks:TRACe:THReshold:RFALl:PUPPer
- :NETWorks:TRACe:THReshold:RFALl:TOP
- :NETWorks:TRACe:THReshold:RFALl:TRACking
- :NETWorks:TRACe:THReshold:RFALl:UPPer

## Command Syntax

    :NETWorks:TRACeN:THReshold:GENeral:LOWer  <amplitude>

<amplitude> is a double.

Where N identifies a specific trace and must be selected from 1 to 128 {1:128}.

## Query Syntax

    :NETWorks:TRACe{1:128}:THReshold:GENeral:LOWer?

## Description

For the indicated S-parameter trace, sets or queries the General threshold's custom lower-threshold definition level. This command is used when making measurements with custom threshold definitions that are based on absolute amplitude. Before using this command,

- Use the `:NETWorks:TRACe:THReshold:GENeral:METHod` command to specify the use of custom threshold definitions.
- When custom threshold definitions are based on percent, use the `:NETWorks:TRACe:THReshold:GENeral:PLOWer` command instead.

Use the `:NETWorks:TRACe:THReshold:GENeral:MIDDle` command to enter a middle threshold level. Use the `:NETWorks:TRACe:THReshold:GENeral:UPPer` command to enter a upper threshold level.

The custom lower-threshold setting can be set from the front panel by choosing Measure > Thresholds... and in the Thresholds tab, General subtab of the Configure Measurements dialog box, setting the signal's Top-Base Definition.

Depending on the waveform type, specify the level in the units shown in the following table.

Units Used for Displayed Content Window Graphs
Content Window Graphs | Y-Axis Units
--- | ---
S-Parameters
Freq-Mag | Decibels
Phase | Degrees
GrpDelay | Seconds