S80 Version 4.92
November 2014
Page 48 of 61
7
Flying with the LXNAV S80
To get the best out of the LXNAV S80 it is important that some preparation is done prior to
take-off. Trying to configure the instrument or set a task while flying is very hazardous
especially in a competition. Pre-flight preparation will ensure that the flight will be both safe
and enjoyable.
7.1
On the Ground
7.1.1
Power on Procedure
Press any of the rotary or push buttons to start the LXNAV S80. The LXNAV S80 welcome
screen will appear. The first screen shows the version of the boot loader, firmware,
hardware and serial number. The boot procedure normally takes a few seconds. When
completed, the Set Elevation dialogue is shown.
7.1.2
Set Elevation and QNH
This setting is crucial for final glide calculation: therefore please pay careful attention to it.
The instrument will offer elevation over standard pressure level QNE. Use the knob to fine-
tune the elevation.
The
QNH
should be changed only when airfield elevation and QNH pressure are given. This
might happen in some competitions.
In all other cases the elevation should always match QNH pressure.
The Set Elevation dialogues are not shown if the LXNAV S80 is switched off and on
during flight.