GP941E 11/01
02.11.01
2
1. Introduction:
The flight data recorder GP941 (= FDR , recorder ) consists of one housing with these functions
inside:
GPS receiver
barometric altitude sensor
electronics for recording and storing data
microphone circuit for gliders with engine
a Lithium battery 3.6V for data retention
a 9V battery for data transfer between recorder and IBM compatible computer (= PC )
Externally connected are GPS antenna, 12V / 120mA power supply, a marker button and the connec-
tion to SR940 glider computer.
The GP941 is intended to be used as a part of the glider computer SR940 system; together with this
glider computer the GP941 has these additional features:
GPS data transfer to SR940
automatic photo sector signal to GP941
declare and transfer a task from SR940 to GP941
waypoint lists and routes can be entered into recorder and brought to the glider, where these
informations can be transferred to SR940
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 GP941, there will be only a display of GPS
information. All other functions mentioned for the SR940 are not available with SR820D.
For glider computers from other manufacturers or a palm PC this function can be used:
NMEA data output with GPS data and barometric altitude
The GP941 also can also be used as a stand alone system without any glider computer connected.
But in this configuration there is no information on reaching waypoints. To check GPS function of the
recorder, this feature can be used:
output for external light emitting diode (LED) mounted within the instrument panel
