Flytec 6030 * - Manual (Page 62)

Flytec 6030-GPS
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9.6.4 Digital Signature and OLC-Registration
The popularity of decentralised competitions has been growing enormously over recent
years. Meanwhile 26 countries have accepted the OLC (Online Contest) convention.
These agreements state that any pilot can submit flights at will over the Internet for
approval and evaluation. The submission has to be compliant to IGC-format (WGS84)
and must have a digital signature. In order to facilitate further on the utilisation of usual
GPS-Receivers, relevant PC-evaluation programs such as Compe-GPS, Gpsvar, MaxPunkte
or Seeyou calculate a digital signature to allow submission of flights in the required form.
However, a “signature” created by PC provides only half the safety against falsification.
In the long term this signature shall be mandatory to be provided by the GPS-Recorder
instruments, as for ex. the FLYTEC 6030 GPS.
At the end of a flight, effected automatically or manually, this „Digital Signature“ is calculated
autonomously and added to the flight data file as so-called G-record.
A correlative remark „Generating Digital Signature“ is displayed in the info field of the
instrument. As this calculation is extremely complicated, it may take several minutes
following a long flight with setting of a short scan rate. Please wait until this message will
disappear.
In case it happens that the OLC does not accept the digital signature upon the transfer of
flight data, the signature can be recalculated on the flight analysis display, by pressing
the F2 Recalc Signat. key.