MGL Avionics Stratomaster Ultra Horizon XL Owner’s manual
Page 10
SPECIFICATIONS
:
General specifications
Ultra Display unit:
Size: 202x135 mm. Mounting depth 95mm (including connectors and wiring). Panel cutout
196x122 mm.
Weight: 980 grams. Excluding external senders, including RDAC unit.
Power supply requirements: 12V DC nominal. Range 6.5V DC to 28V DC. Internally
protected to 33 V DC.
Current consumption: 80 mA with back light at 13.8V DC. Excludes current requirements of
external sensor packages if any.
External temperature sensor input: Optimized for National Semiconductor LM335
temperature sender.
Alarm output: Active low pull down transistor output suitable for switching of lamps and LEDs
with dropping resistors. Maximum current 0.5A DC.
Air-talk link: Two Air-talk links are provided. These are used to connect to other Air-Talk
compatible devices. Standard audio RCA cable and connectors are used as medium. Air-talk
is intended as a short distance, multi master communications link allowing Air-talk compatible
devices to share information. The Stratomaster Ultra uses the Air-talk link to connect to
another Stratomaster Ultra a PC, Flight data recorder (black box), and key download devices
(for transfer of the log to a remote PC).
The airtalk link is also used to connect either SP-1, SP-2 or SP-3 attitude and heading sensor
packages.
Rotor speed sensor input: This input is used for the split rotor speed and engine power
instrument. Intended for rotor craft such as Gyro planes and helicopters.
Technical specifications Ultra display unit
Altimeter
Range 0-40 000 ft (12 195 m), 1ft (or 1 m) dynamic resolution, 7.5 ft (or 2 m) static resolution
at sea level. Dynamic resolution applies with the aircraft in flight. Dynamic resolution is
measured by mathematically evaluating the turbulence created around the aircraft.
Basic accuracy at 20 degrees C (68 degrees F) +/- 30 ft (9 m) based on calibration to
mercury manometer at +/- 1 mb (0.0295 Inch of Hg).
Maximum theoretical error /- 1.5% over temperature range 0-40 degrees C (104
degrees F). Typical error factor over temperature range 0-40 degrees C (104 degrees F) is
less than 0.5%
Note: The altimeter can be operated to altitudes above 40 000 ft (12 195 m). Range and
accuracy above the 40 000 ft (12 195 m) level are dependant on individual units. The
achievable range is in the region of 45 000 ft (13 720 m) to 60 000 ft (18 293 m) depending
on manufacturing tolerances of the pressure sensor.
