MGL Avionics Stratomaster Ultra Horizon XL Owner’s manual
Page 12
employed features full, accurate cold junction compensation and bow voltage correction. The
system is further highly immune to received EMI from high powered radio transmitters.
Power supply
The Stratomaster Ultra unit is optimized and intended for operation on a 12V DC supply such
as a motorcycle battery. However, it can be operated on any power supply down to about 6.5
volts as well as aircraft power supplies of 24 or 28V DC.
Current consumption may vary slightly between units but is typically in the region of 40 mA
without display back light and 80 mA with display back light.
Current consumption reduces as supply voltage increases.
The unit is internally protected against temporary over voltage loads such as those that can
be produced by a cranking starter motor.
It is advisable to power the unit via a fuse or circuit breaker. A fuse rating of 1A (slow blow) is
recommended. Generally it is accepted to use circuit breakers that can be reset during flight
should the need arise. Ordinary fuses are not recommended for aircraft use.
