Ground; Aux Out; Cal Out; Probe Compensation Terminal - Agilent Technologies Infiniium 90000 Q-Series User Manual

When enabled, the RealEdge 1R and 3R channel inputs take over the
standard channels 1- 4, except for the trigger circuitry on channels 2 and
4. When RealEdge is enabled, you can still trigger on signals connected to
the channel 2 and 4 inputs (but you cannot capture or display data from
these signals).
You can connect 1.85 mm threaded RF cables to the RealEdge 1R and 3R
channel inputs.

Ground

The ground plug is convenient for ESD wrist straps.

Aux Out

This output signal is selected by the Infiniium oscilloscope application's
Calibration Output dialog box. It can be a DC level, the probe
compensation signal (a square wave used to adjust compensated passive
probes), the trigger out signal, or a demo signal.

Cal Out

This calibration output is used when performing user calibration on the
oscilloscope.
A calibration cable is included with the oscilloscope. The 50 GHz and
62 GHz bandwidth models include a second calibration cable for the
RealEdge channel inputs.
You can also use the Infiniium oscilloscope application's Calibration
Output dialog box (under the Utilities menu) to select other output signals,
just like you can for the Aux Out output.

Probe Compensation Terminal

This terminal has a square wave signal that is used to adjust compensated
passive probes.
You can also output a DC level on this terminal using the Infiniium
oscilloscope application's Calibration Output dialog box.

USB Host Ports

There are two USB host ports on the front panel, next to the power
switch.
Agilent Infiniium 90000 Q-Series Oscilloscopes User's Guide
Using the Oscilloscope
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