Vega ASV-1 Operating Manual
Page 18
7 Specifications
Operating Temperature Range
-20ºC to 50ºC (-4ºF to 122ºF)
Storage Temperature Range
-30ºC to 80ºC (-22ºF to 176ºF)
Power Supply
10 to 30Vdc
Current Consumption
Approx. 73mA @ 13.8V (backlight highest setting), 33mA @13.8V (back-
light lowest setting)
Display
1.8” 160x128 pixel active matrix TFT display.
1000 cd/m2
Sunlight readable with anti-glare coating
LED Backlight is user configurable
Alarm Output
Open collector transistor switch to ground
Maximum rating 0.25A
Dimensions
see Vega series dimensional drawing
Enclosure
2 1/4” (57mm) ABS, black in color, front or rear mounting. Flame retardant.
Weight
Approx. 120 grams (Instrument excluding cables)
Non-volatile memory storage
100000 write cycles
Altitude sensor ADC resolution
24 bit
Altimeter range
-1500ft to +35000ft (-457m to +10668m)
Altitude units
ft or m
Baro Correction Range (inHg)
28.00 to 31.00 “Hg
Baro Correction Range (mB)
946 to 1050 mb
Pressure units
“Hg or mb
VSI range
+-20ft/min to +-10000ft/min
VSI units
ft/min or m/s
Airspeed sensor ADC resolution
ASV-1 Version 1: 12 bit
ASV-1 Version 2: 24 bit
ASV-1HS: 13.5bit
Airspeed range
ASV-1 Version 1: 20mph to 250mph
ASV-1 Version 2: 20mph to 350mph
ASV-1HS (High Speed version): 20mph to 320mph
Airspeed resolution
1 mph
Measurement accuracy
+/- 2mph
Serial Port
RS232 voltage levels
Calibration interval
1 Year
As with any instrument, regular zeroing is suggested to achieve maximum performance.
8 Operating the alarms
The alarm output can be used to switch an external alarm indicator. The external alarm switch is an open collector transis-
tor 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 ASV-1 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.
