ALT-1 Operating Manual
Page 7
Select this menu option to turn the backlight on or off.
Select whether you want the OAT to be displayed in degress Fahrenheit (ºF) or in degrees Celcius
(ºC).
4.4 Altitude Setup
All altitude related parameters can be setup here.
Move the highlight over the “DONE” menu item and press the rotary button to return to the main
menu.
Select if you want your altitude readout in feet (ft) or meters (m).
Select if you want your local pressure readout in millibars (mB) or inches of mercury (“Hg).
Select if you want the barometer to be displayed on the altitude screens or not.
4.5 VSI (Vertical Speed Indicator) Setup
All VSI related parameters can be setup here.
Move the highlight over the “DONE” menu item and press the rotary button to return to the main
menu.
This function is used to set your VSI to read exactly 0ft/min. This is similar to setting the needle on a
mechanical VSI to point to zero by turning the adjustment knob on such a VSI. The electronic VSI
generally has much less drift compared to a mechanical VSI and this function will only be used very
occasionally. Ensure that you perform this function when no pressure changes due to wind or other
reasons are occurring.
