MGL Avionics Infinity ALT-2 ( Precision encoding altimeter and VSI indicator with a serial RS232 transponder output )
The ALT-2 is a 2.25” instrument that contains a precision encoding altimeter and a wide range vertical speed indicator. The altimeter conforms to ANSI standard atmosphere rules from –700 ft up to a maximum of 40 000 ft. The ALT-2 outputs various formatted RS232 serial data protocols compatible with serial input transponders such as that from Garmin, Magellan, Northstar, Trimble, Microair etc. The altimeter can display altitude in feet or meters, local pressure can be set in millibars or inches of mercury
The onboard VSI indicator is altitude compensated and can be displayed in either feet/minute (ft/min) or meters/second (m/s). It also offers a digital readout with a wide range from +/-20 ft/min to as high as +/-10 000 ft/min, it also offers a logarithmic analog display with a +/-2000 ft range. The VSI can be calibrated by the user once the instrument has been installed in the aircraft.
In addition the ALT-2 provides an OAT sender which is used in determining the density altitude of the aircraft. The ALT-2 can also be used to measure relative altitude and it has a facility for the pilot to enter a reference altitude and deviation band that has to be kept