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Vega ALT-5 Operating Manual
7 Specifications
Operating Temperature Range
Storage Temperature Range
Humidity
Power Supply
Current Consumption
Display
Alarm Output
Dimensions
Enclosure
Weight
Non-volatile memory storage
Altitude sensor ADC resolution
Altimeter range
Altitude units
Baro Correction Range (inHg)
Baro Correction Range (mB)
Pressure units
VSI range
VSI units
Serial Port
Calibration interval
8 Operating the alarms
The alarm output can be used to switch an external alarm indicator. The external alarm switch is an open collector
transistor switch to ground with a maximum rating of 0.25A DC. It is possible to wire the alarm contacts of several
Stratomaster instruments in parallel should this be desired. To avoid false activation of the alarms, the alarm function is
only active 10 seconds after the instrument has powered up.
9 Firmware Upgrading
The ALT-5 can be upgraded in the field by connecting the RS232 port to a PC and running the firmware update program.
Note that only the RS232 port can be used to upgrade the firmware.
Please see the Vega firmware upgrading document for more information.
-10ºC to +55ºC (14ºF to 131ºF)
-20ºC to 80ºC (-4ºF to 176ºF)
<85% non-condensing
10 to 30Vdc
Approx. 73mA @ 13.8V (backlight highest setting), 33mA @13.8V
(backlight lowest setting)
1.8" 160x128 color LCD display.
1000 cd/m2
Sunlight readable with anti-glare coating
LED Backlight is user configurable
Open collector transistor switch to ground
Maximum rating 0.25A
see Vega series dimensional drawing
2 1/4" (57mm) ABS, black in color, front or rear mounting. Flame retardant.
Approx. 120 grams (Instrument excluding cables)
100000 write cycles
24 bit
-1500ft to +35000ft (-457m to +10668m)
ft or m
28.00 to 31.00 "Hg
946 to 1050 mb
"Hg or mb
+-20ft/min to +-10000ft/min
ft/min or m/s
RS232 voltage levels
1 Year
Page 12
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