:CHANnel:UDEFined:TOP

Command Syntax

:CHANnelN:UDEFined:TOP  <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:TOP?

Description

For the indicated channel, sets or queries the custom top-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:BASe to set or query a custom base level.

Before this custom top 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 is 429 mv. The minimum setting can be -429 mV but is bounded by the base level (:CHANnel:UDEFined:BASe).

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