GP940E 01/97
27.02.97
2
1. Introduction:
The flight data recorder consists of one housing with these functions inside:
GPS receiver
barometric altitude sensor
clock
electronics for recording and storing data
vibration sensor (for glider with engines)
one rechargeable battery for data transfer between recorder and IBM compatible PC, to cover
short supply power breaks and for data retention.
one Lithium battery for data retention, if rechargeable battery is empty.
Connections to the outside are: GPS antenna, power supply 12Volt / 170mA, marker push button,
data connection to glider computer SR940 or SR820D.
The GP940 is intended to be used as an option for glider computer SR940; together with this glider
computer the GP940 has these additional features:
GPS data transfer to SR940
automatic photo sector signal to GP940
declare and transfer a task from SR940 to GP940
waypoint lists and routes can be entered into recorder and brought to the glider, where these
informations can be transferred to SR940
transfer of nearest airfields from a large list in GP940 to SR940 (not yet ready)
saving and restoring configuration data of SR940
transfer of additional data from SR940 to recorder which are included in the stored flight data:
indicated airspeed, wind information, next waypoint selected.
If the glider computer SR820D is used together with the GP940, there will be only a display of GPS
information. All other functions mentioned for the SR940 are not available with SR820D.
The GP940 also can also be used as a stand alone system without any glider computer connected.
But then the only information the pilot gets is if the GPS receiver has reception or not (by external
light emitting diode (LED) or by audio signal when pressing the marker button). There is no informa-
tion on reaching waypoints.
