:CHANnel:UDEFined:BASe

Command Syntax

:CHANnelN:UDEFined:BASe  <amplitude>

<amplitude> is a double.

Where N identifies a specific channel and must be selected from {1:8}{A|B|C|D}. For example, CHANnel3C.

Query Syntax

:CHANnelN:UDEFined:BASe?

Description

For the indicated channel, 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 or Watts depending on the waveform type. Use :CHANnel{N}: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.

The default setting is -240 mV. The maximum setting can be 429 mv, but is bounded by the top level (:CHANnel:UDEFined:TOP). The minimum setting is -429 mV.

Common Numerical Child Commands

This command supports the use of the following common numerical child commands: :DEFault, :MAXimum, :MINimum, and :STEP.

Example Command Sequence

:MEASure:TBASe:METHod UDEFined
:CHANnel2a:UDEFined:BASe -125E-3
:CHANnel2a:UDEFined:TOP 125E-3