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6 GPS FUNCTIONS
6.1 INTEGRATED 99 CHANNELS GPS RECEIVER
Digifly AIR features an extremely sensitive, and state-of-the-art, 99 channels integrated GPS receiver.
6.2 GPS STATUS INFORMATION
The GPS status icon has different meanings:
1) Fixed GPS icon = GPS FIX valid ( GPS position available)
2) Blinking GPS icon = insufficient signal (GPS position NOT AVAILABLE)
6.3 GPS SIGNAL QUALITY (HDOP)
The HDOP value represents the weakning of GPS signal. Small values mean good precision.
6.4 LATITUDE & LONGITUDE COORDINATES
The latitude and longitude coordinates are displayed on the upper part of the INFO GPS page and are referred to
WGS84 map datum.
6.5 LATITUDE & LONGITUDE COORDINATES OPTIONS
Three different kinds of coordinates are available:
DMS = grade, minute & second (dd° mm’ ss.s) (default)
DMM = grade & minute (dd° mm.mmm’)
UTM Universal Transverse Mercator (utm x, y, zone).
To set the coordinates DMM , DMS or UTM use the parameter (ADVANCED SETUP \ n. 22 CORD).
The latitude and longitude coordinates are referred to WGS84 map datum.
6.6 GPS ALTITUDE
The GPS altitude (“AG”) is the height above the sea level accordingly to the GPS satellite system.
6.7 GPS GROUND SPEED
The GPS ground speeds is the glider speed related to the ground (“Gs”).
6.8 GPS DIRECTION (TRK)
The GPS direction (“TRK”) is the glider’s direction related to the ground.
6.9 GROUND EFFICIENCY (GLIDE RATIO)
It shows the efficiency (glide ratio) related to the ground.
To set the time over which the average efficiency (glide ratio) is calculated, go to (ADVANCED
SETUP \ n. 7 EFF).
If the “ground speed” slows below the 2km/h or the GPS signal is not valid, the indicator shows: “ 0.00 ”.
If you are in lift, the efficiency indicator is in reverse mode and shows the average efficiency calculated during
the last glide, go to (ADVANCED SETUP \ n. 8 EFFA) to set the time to be used to calculate the average efficiency
(glide ratio) to be used for the glide calculation to WP
The average efficiency value is very important because it is the value used by the glide computer.
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