Datalink Systems i50 Spezifikationen PDF herunterladen (Seite 39)

i50 Manual (5.10)

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8.11 Cellular (GPRS/CDMA)

The unit supports several GPRS modems, as well as Cypress and Airlink CDMA modems. An

internal Enfora GPRS modem is available as an option.

Important note: Some Enfora GPRS modems allow control of their settings from external IP

addresses when using their default settings. Make sure you use the AT$APIPWD command to

set a password to prevent unauthorized access. The i50B Programmer provides a button to

quickly set the Enfora password (see section 7.4).

8.12 Globalstar

The Globalstar network uses a large group of low orbit satellites to provide coverage around many

parts of the world. Billing is time-based, so the unit limits online time to the minimum required. It is

recommended to enable buffering on this network to reduce the number of connections to the server.

8.13 Iridium

The Iridium network uses a large group of low orbit satellites that talk to each other to create a

worldwide data network. Latency is higher than terrestrial networks, with round-trip times of

approximately 20 seconds with a good signal. An internal Iridium modem is available as an i50

option.

8.14 Wi-Fi

The i50 has the option of an internal Wi-Fi module. This module allows third-party devices to connect

to the i50 via an ad-hoc (computer to computer) Wi-Fi connection. The i50 acts as a DHCP server to

provide a private IP address to the connecting device, and then allows the device to send data to the

Internet if an IP modem (Cellular or Globalstar) is available. Various Wi-Fi settings are available to

control channel and encryption settings. It is highly recommended to assign each i50 a unique SSID

and encryption key so that they will not interfere with each other when in close proximity.

See section 10.0 for more information on the Wi-Fi link.

Section 7.4.2 describes how to use the i50 Programmer to update the Wi-Fi module’s firmware. This

may be necessary to make use of new features as they are developed.

8.15 Garmin

The i50 supports the Garmin Fleet Management Interface (FMI). This allows the i50 to use the

Garmin device as a messaging terminal, send and edit stops, and monitor ETA and driver status. See

section 11.0 for more information.

8.16 NMEA Output

One or more i50 ports can be programmed to output GPS NMEA data strings. This data is an exact

copy of data received from the internal GPS module, sent using 9600,8N1 port settings.

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