ASX-1 Operating Manual
Page 9
7 Loading factory default settings
Pressing and holding the F1 and F2 simultaneously on power up will cause the ASX-1 to load preprogrammed factory
default settings. The following screen will be displayed:
8 Operating the alarms
If the alarm is activated, the corresponding item on the display will flash. At the same time the externally available alarm
switch will close. The switch will remain closed until any button is pressed to acknowledge the alarm or until the
condition(s) that activated the alarm no longer exist. 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 0.5A 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 Cleaning
The unit should not be cleaned with any abrasive substances. The screen is very sensitive to certain cleaning materials
and should only be cleaned using a clean, damp cloth.
10 ASX-1 Specifications
Operating Temperature Range
-10ºC to 50ºC (14ºF to 122ºF)
Storage Temperature Range
-20ºC to 80ºC (-4ºF to 176ºF)
Humidity
<85% non-condensing
Power Supply
8 to 30Vdc SMPS (switch mode power supply) with built in 33V over voltage
and reverse voltage protection
Current Consumption
Approx. 50mA @ 13.8V (backlight on) 16mA @13.8V (backlight off)
Display
114x64 graphic LCD display. Contrast and backlight is user configurable,
green/yellow backlight
ADC
12bit over sampled successive approximation
Dimensions
see Infinity series dimensional drawing
Enclosure
2 1/4” ABS, black in color, front or rear mounting
Weight
Approx. 120 grams
Alarm contact current rating
Open collector transistor switch to ground. Maximum rating 0.5A DC
Non-volatile memory storage
100000 write cycles
Altimeter range
-700ft to 30 000ft (-213m to 9144m)
Altimeter resolution
1ft/1m
Measurement accuracy
+/- 1mB, +/- 30ft at sea level
Airspeed range
16mph to 250mph
Airspeed resolution
1 mph
Measurement accuracy
+/-1% at 85mph nominal
Airtalk protocol
19200 baud, 8 data bits, no parity, 1 stop bit (TTL voltage levels)
Warning:
The ASX-1 is not waterproof, serious damage could occur if the unit is exposed to
water and/or spray jets.
