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A position report from your eTrac is identified by the mailbox on the LES that stores
the transmitted packet. The correct mailbox is selected by specifying the LES and a
mailbox address called Data Network IDentity (DNID). Several eTrac systems can
transmit position to the same mailbox at an LES. To distinguish one eTrac’s position
reports from another, each eTrac system also transmits a member number. This is a
number between 1 and 255, enabling as many as 255 eTrac systems to transmit their
position data to the same mailbox at an LES.
Before the position reporting feature can be used, the DNID must be set up by
submitting a DNID order form to an LES that supports the Internet Gateway Option.
The LES also needs to know the e-mail address to which it will forward the eTrac
position reports.
The LES will then download the DNID and member number into the eTrac system
via satellite. To receive this data, the eTrac must be powered up, logged into the
Inmarsat-C system, and have a clear view of the satellite. When the DNID and
member number are downloaded into the eTrac, the DNID list can be displayed using
easyMail by selecting Options-> Configuration-> DNID.
The GPS position of the eTrac’s current location can be transmitted at regular
intervals. The following process will allow you to set up the local eTrac system
configuration.
3.3.1 Local eTrac Configuration for GPS Position Reports
To configure easyMail and the eTrac to transmit regular position reports, you will use
the position reporting set-up screens, shown in Figure 3-6 on the next page.
1. In easyMail, select Options-> Configuration-> Position Report->
DNID PU Position Reporting. This will display the Reporting Set-up
window.
2. Press the
New button to open the interval configuration window.
3. Select the
LES, DNID and Member Number pair downloaded by the
LES.
4. Set the desired interval (e.g., selecting 2 hours will result in a
position being transmitted once every two hours).
A GuidetotheKVHeTracSatelliteCommunicationsSystem
3-6
www.kvh.com
Anapplication,suchastheThrane&ThraneCapsatManagerfleet
trackingprogram,isrequiredtodecodethepositionreportafterit
hasbeenforwardedtoyoure-mailaccount.