:CHANnel:PROBe:MAX?

Query Syntax

:CHANnelN:PROBe:MAX?

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.

Description

Returns the actual available signal range of the probing hardware as a comma-separated lower value and upper value. The values are based on total channel gain, channel scale and offset, the probe state, and the probe offset mode.

The signal range is also shown in the graphical user interface (GUI) as a bar on the right side of the waveform grid.

Signal range behaves differently depending on whether probe offset or oscilloscope offset is used (see :CHANnel:PROBe:OMODe). When oscilloscope offset is used, the signal range is always centered around 0 V. Because oscilloscope offset is applied after the probe's amplifier, it cannot actually change the signal range. However, when probe offset is used, the signal range is centered around the probe's offset because the offset is applied before the probe's amplifier. So, to actually shift the signal range of the probe, you must use probe's offset. When probe offset is used, and no signal is attached, the oscilloscope measures the probe's offset as a signal. This is correct behavior and is verified by the GUI signal range bar.