Doc.ID. HMSI-168-92
Netbiter EasyConnect
Doc.Rev. 2.10
Chapter 7
7. GPS
Most Netbiter models provide support for GPS location functions, which can be used to report the
unit’s location, and also to send alarms if the system moves out of a pre-defined area.
Some Netbiter Gateways require the use of a separate GPS receiver, which is connected via RS-232 on
the 9-pin D-Sub interface. The receiver must support NMEA version 3 protocol, with sub-messages
GGA and RMC.
Other Netbiter models feature a built-in GPS receiver, and thus only require the connection of an an-
tenna.
7.1 GPS Devices
See below for details on how to connect and use GPS with each Netbiter model.
For information on how to power an external GPS unit, see the documentation supplied with the device.
7.1.1 Netbiter EasyConnect EC220
Connecting the GPS device to the D-Sub interface requires a 9-pin male D-Sub connector with the fol-
lowing configuration:
• Pin 2: Transmit (Tx) from GPS
• Pin 3: Receive (Rx) from GPS
• Pin 5: Ground
7.1.2 Netbiter EasyConnect EC250
This model requires a 9-pin female D-Sub connector, with the following wiring configuration:
• Pin 2: Receive (Rx) from GPS
• Pin 3: Transmit (Tx) from GPS
• Pin 5: Ground
GND
Rx
Tx
GND
Tx
Rx
