Active probe adaptor

An active probe adapter, the adapter comprising:

• an adapter body for connecting an active probe to a device under test (DUT), the adaptor body including:
• an impedance controlled conducting path for connecting a signal of the DUT to a signal input of the active probe, the path including a signal conductor and a reference conductor;
• a first probe-side electrical contact for electrically connecting the signal conductor to the signal input of the active probe;
• a second probe-side electrical contact for electrically connecting the reference conductor to a reference input of the active probe;
• and
• a plurality of DUT-side electrical contacts for electrically connecting the signal conductor and the reference conductor to the DUT;
• and
• a connector for selectively connecting a first of the DUT-side electrical contacts to a node associated with a signal of interest of the DUT and a second of the DUT-side electrical contacts to a reference node of the DUT,
• wherein the DUT-side electrical contacts are physically arranged to allow different orientations of the connector relative to the adapter body.