Sierra Wireless DART 300 User Manual
Feature Reference
DART 300 Modem
Page 36
2110212 Rev 1.0
Implementation
For UDP and TCP services, there is no configuration required. The RI signal will operate as
indicated above.
indicated above.
For SLIP and PPP connections, the RI signal can be enabled or disabled with the &I (Ring
Indicator) command. To enable RI in SLIP and PPP modes use &I1 (the default). To disable it
use &I0.
Indicator) command. To enable RI in SLIP and PPP modes use &I1 (the default). To disable it
use &I0.
5.6. CDPD Radio and Booster Support
The DART 300 is a Class III (600 mWatt) device with full duplex transmit and receive capability.
The modem supports connection to the AirBooster 350 RF Amplifier for applications requiring
Class I (3 Watt) operation.
The modem supports connection to the AirBooster 350 RF Amplifier for applications requiring
Class I (3 Watt) operation.
DART 200
The DART 200 provided a Class I transmitter, capable of 3 Watts, rather than the
DART 300 modem’s Class III 600 mWatt output. Many CDPD coverage areas do not
permit use of the full 3-Watt power and limit mobile transmitters to 600 mWatts. For
users requiring the higher output in areas where it is permitted, the AirBooster 350 RF
Amplifier from Sierra Wireless is available for use with the DART 300 modem.
DART 300 modem’s Class III 600 mWatt output. Many CDPD coverage areas do not
permit use of the full 3-Watt power and limit mobile transmitters to 600 mWatts. For
users requiring the higher output in areas where it is permitted, the AirBooster 350 RF
Amplifier from Sierra Wireless is available for use with the DART 300 modem.
The AirBooster 350 is an intelligent RF amplifier for boosting some Sierra Wireless
Class III (600mW) CDPD devices to Class I (3W). The amplifier is an “intelligent” booster in
that it does not simply apply a fixed gain to a varying input RF level as a linear amplifier would.
Instead, the AirBooster amplifier takes a constant RF level from the CDPD device and applies as
much gain as the local CDPD system allows at that moment.
Class III (600mW) CDPD devices to Class I (3W). The amplifier is an “intelligent” booster in
that it does not simply apply a fixed gain to a varying input RF level as a linear amplifier would.
Instead, the AirBooster amplifier takes a constant RF level from the CDPD device and applies as
much gain as the local CDPD system allows at that moment.
A GPS Option is also available for the AirBooster 350, adding a GPS receiver inside the package.
This is available as a field upgrade kit or pre-installed at the factory.
This is available as a field upgrade kit or pre-installed at the factory.
5.7. Upgradability
The DART 300 uses the Sierra Wireless SB300 module. It contains flash memory to allow
software upgrades to be made in the field using the local serial connection. Check the Sierra
Wireless Internet site for information on firmware upgrades.
software upgrades to be made in the field using the local serial connection. Check the Sierra
Wireless Internet site for information on firmware upgrades.
When new features are added, this document will be updated as well. The web site includes a
document library where updated editions can be found.
document library where updated editions can be found.