GP940E 01/97
27.02.97
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against this additional information; this shows the validity of the recorded data. By the way, only a part
of the control information is used for this check on the PC, another part can be used at authorized
places to perform another safety check.
To view a flight on the screen, program WinFDR must be installed. This is a WINDOWS program
which requires WIN 3.1 or later. Installation is done automatically by running WINSETUP.EXE from
WINDOWS. Then start WinFDR and open the desired flight data file. With Options you can select
the display mode, with Help you get information if you need.
Other evaluation programs (like program CAL.EXE) require a special format as described by the FAI /
IGC. After reading flight data in GP940 format (extension *.ZAN), these data can be converted to IGC
format (extension *.IGC). As this format needs about 10 times more data and 10 times more transfer
time from GP940 to PC, the GP940 uses ist own format.
The GP940 has some special functions for glider computer SR940. Waypoint lists and routes can be
loaded into the recorder and can be retrieved at the glider by SR940.
A data base with up to 4500 airports can be loaded into the recorder; a selection of the nearest air-
ports can be transfered into SR940.
All SR940 configuration settings can be saved from SR940 to the recorder and can be restored back.
So several pilots sharing a glider may load their own settings before takeoff.
Important: all these inputs to GP940 have no influence to the recorder part of GP940! None of the
waypoints or routes entered into GP940 are used for task declaration or for recording.
5. Charging internal battery of GP940:
The recorder has a rechargeable battery inside. This battery is used for two functions: first this battery
covers short supply power breaks (to avoid that a flight record is cut into parts) and second to supply
power for GP940 during PC operation.
During flight this battery is continuously recharged by glider supply power; so this battery always
should be in a loaded state.
But before first use and before the gliding season starts or after longer periods with no flying (after
periods of more than two months without recharging), the internal battery should be charged once
with the GP940 charger. Instead of the original charger any other charger, which is normally used for
12 Volt glider batteries, can be used too (output voltage 13...15 Volt / >60mA). The charging program
is controlled by GP940.
Important:
Normal charging or recharging works only if the outside temperature is more than +10°C! Be-
tween +10°C and 0°C charging and recharging is done only by half of the normal charging
current, under 0°C charging is turned off!
The 9-pin plug of the charger is plugged into the connector at the rear side of GP940 (besides the
antenna plug). The charging program has several steps:
When charging starts, the recorder delivers this audio signal:
= charging program starts
