Introduction
The ASX-1 altimeter/airspeed combo is a 2 1/4” instrument based on a precision altimeter and a wide range, sensitive
airspeed indicator. The altimeter conforms to ANSI standard atmosphere rules from –700 ft up to a maximum of 30 000 ft.
The altimeter includes an encoding serial output that, when used in combination with MGL Avionics CNV-AT, provides a
parallel Gillham code interface for transponders. The altimeter can display altitude in feet or meters. Local pressure can
be set in millibars or inches of Mercury.
The airspeed indicator can show air speeds from 16 to 250 mph and is well suited for use in slow aircraft due to very good
sensitivity and linearity at low air speeds. The airspeed indicator as well as altimeter can interface to a static port and the
airspeed indicator is based on a standard aviation pitot tube. The airspeed indicator can be set to indicate speeds in
statute miles per hour (mph), kilometers per hour (km/h) or nautical miles per hour (knots) with the air-distance being
displayed in corresponding units. The airspeed sensitivity can be calibrated by the user to cater for errors caused by pitot
tube placement. The ASX-1 also outputs airspeed information via the airtalk protocol for interfacing to the Infinity FF-1 /
Velocity FF-3 (fuel flow computer for single or dual fuel tanks) and the SP-X (AHRS) instruments.
In addition the ASX-1 provides a 24 entry automatic flight log that stores the duration of each of the last 24 flights, an air-
distance trip counter and a current flight timer. The ASX-1 is the ideal instrument for installations where panel space is
limited.
1 Features
• Precision altimeter from –700 ft up to a maximum of 30 000 ft (-213m to 9144m)
• Provides a parallel Gillham code interface for transponders when used in combination with the MGL
Avionics CNV-AT
• The altimeter can display altitude in feet or meters. Local pressure can be set in millibars or inches of
Mercury
• Airspeed ranges from 16 to 250mph and is well suited to slow aircraft due to very good sensitivity and
linearity at low air speeds. Airspeed can be displayed as IAS or a calculation based TAS
• Includes a 24 entry automatic flight log
• Includes an air-distance trip counter and a flight timer
• Airspeed units can be in miles per hour (mph), kilometer per hour (km/h) or nautical miles per hour (knots)
• Contains a programmable low/high airspeed alarm
• Records maximum airspeed and altitude reached in permanent memory
• Standard 2 1/4” aircraft enclosure (can be front or rear mounted)
• Rotary control plus 2 independent buttons for easy menu navigation and user input
• Alarm output as well as a red LED illuminates when the alarm has been activated
• Large backlit graphic LCD with adjustable contrast
• Wide input supply voltage range of 8 to 30V DC with built in voltage reversal and over voltage protection
for harsh electrical environments
• Light weight design
• Field upgradeable firmware
• 1 year limited warranty
ASX-1
Encoding aviation altimeter with
serial output and airspeed Indicator
(ASI)
Operating Manual – English 1.05
