Compas Software controls various ergometers directly, allowing the operator to select a default test protocol, or to enter and save a new test protocol, as required.  Typical protocols involve measurements of O2 and CO2 exchange rates, as well as pulmonary function tests, during Rest, Freewheeling, Exercise and Recovery.  The duration and  characteristics of each phase are entered into dialog boxes or selected from menus.

Automated protocols can be over-ridden at will to allow the operator to take full control of the procedures at any time during the test.

The pre-test screen allows the operator to verify that all signals are within a normal range.  Green backgrounds to the meters indicate normal signals, whereas red backgrounds indicate abnormal data.