Bill,
The EFIS works just like a normal altimiter or airspeed indicator. If you apply pitot and/or static pressure, it will read correctly. When you do these tests, you can expect to see some motion on the artificial horizon display though. This occurs because you are "lying" to the AHI by telling it that the aircraft is climbing / accelerating / etc. when it is not.
There is no airspeed calibration in the EFIS. We calibrate every unit before it leaves the factory. So you'd be doing more of a "verification" than a calibration.
There is a single alititude adjust in the EFIS. You can adjust the altitude +/- 500 feet. This will change both the displayed alititude and the encoder output (if used).
Note that if your customer is using the Dynon AOA Pitot probe, this probe has calibrated leaks designed into it, and it is expected that when you apply pressure to it, it will leak out. There is no way to plug this leak, so you will need to apply pressure directly to the feed lines. These leaks will in no way make the pitot incorrect in flight.
