Thrane&Thrane TT-3020C, Руководство по настройке

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Short feature description
Introduction
9-Nov-00 Page 1-3
The member number has a similar meaning as the return address
on an envelope. The member number is used by the ves -
s el/vehicle surveillance centre to identify the transceiver that
transmitted the position report.
When a position report is received by the Land Earth Station (LES)
a DNID file is created from the packets received in the VMS DNID
mailbox. The DNID file can then be forwarded to the fishery author i-
ties or other vessel/vehicle surveillance authorities via the terres -
trial line. The type of network used to access the Inmarsat-C Land
Earth Station (X.25, PSTN etc.) is not discussed in this document. It
is also important to notice that the LES interface varies with the di f-
ferent producer of LES.
Position reports as transmitted by the Inmarsat-C transceiver are
one or two 15 bytes data packets on the satellite link but this i nfor-
mation is packed into a DNID format before it is transmitted to the
vessel/vehicle surveillance centre. Therefore it is the DNID format
that is being described throughout this manual.
1.2 Short feature description
The Thrane & Thrane Fishery Transceiver is the market leader in
Inmarsat-C Vessel Monitoring Systems. The Transceiver has been
approved as Fishery Monitoring Unit in a large number of countries
and offers a great variety of configurations depending on the spe-
cific needs .
In the following is a short list of the primary features in both of the
Thrane & Thrane Inmarsat-C fishery transceivers.
•
Freely configurable position reporting interval
•
Detection and reporting of Inmarsat-C antenna blockage
•
Detection and reporting of GPS blockage