:CHANnel Probe Head Commands
When using a Keysight probe amplifier and probe head, these commands let you select the probe head, turn it on, and query its information. By specifying the probe head (and amplifier) being used on a channel, Infiniium can make the proper attenuation/gain/dB and other compensation adjustments and report measurement values at the probe tip rather than at the oscilloscope's channel input.