# :CHANnel:PROBe:VTMode

:CHANnel Probe Commands

- :CHANnel:PROBe:ADAPter:ID?
- :CHANnel:PROBe:ADAPter:STATe?
- :CHANnel:PROBe:ATTenuation
- :CHANnel:PROBe:BANDwidth?
- :CHANnel:PROBe:CAPacitance?
- :CHANnel:PROBe:CORRection:MODE
- :CHANnel:PROBe:CORRection:RESPonse
- :CHANnel:PROBe:COUPling
- :CHANnel:PROBe:DB
- :CHANnel:PROBe:DESCription?
- :CHANnel:PROBe:GAIN
- :CHANnel:PROBe:ID?
- :CHANnel:PROBe:IMPedance?
- :CHANnel:PROBe:MAX?
- :CHANnel:PROBe:MODE
- :CHANnel:PROBe:OMODe
- :CHANnel:PROBe:SNUMber?
- :CHANnel:PROBe:STATe?
- :CHANnel:PROBe:UNITs
- :CHANnel:PROBe:VTMode
- :CHANnel:PROBe:VTValue

## Command Syntax

    :CHANnelN:PROBe:VTMode {OFF | INTernal}

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:PROBe:VTMode?

## Description

Specifies `OFF` or `INTernal` voltage termination mode for the following probes:

- The N5444A probe head.
- The N7010A active termination adapter, regardless of the attachment/head.
- The MX0020A/21A/22A/24A/25A probe amplifiers.

Some technologies such as HDMI require a non-ground termination voltage, and it is best to measure those signals with a probe that is also terminated with the same voltage. This is called voltage termination mode or V-Term mode.

In some cases, as with differential SMA probe heads that have a V-Term input, the V-Term input can be physically grounded with a shunt, left floating, or connected to the DUT's termination voltage, and there is no need for software control.

However, some probes let you control the V-Term voltage internally, and the voltage termination mode control is necessary.

When the `INTernal` mode is selected, you specify the internal voltage termination value using the `:CHANnel:PROBe:VTValue` command.