User's Manual

i-PORT III User’s Guide
Document ID: UG-i-PORT III NAE -12-
2.5 Interfaces
2.5.1 Serial Interface RS232:
Pin Name Description
1 CD Carrier Detect
2 RXD Receive Data
3 TXD Transmit Data
4 DTR Data Terminal Ready
5 GND System Ground
6 DSR Data Set Ready
7 RTS Request to Send
8 CTS Clear to Send
9 RI Ring Indicator
Rate of transmission: 9.6 kbit/s (Boot dialog, fix)
Rate of transmission: 1.2 to 115.2 kbit/s (Protocol, configurable)
For the communication with a Host-PC (e.g. Serial Host or Boot Dialog) only RXD, TXD and GND is needed.
Other contacts are optional in use for modems or GSM-device.
GPS Device:
A standard protocol (GPRMC) has been implemented. All devices (i.e. Garmin GPS 35) that work with this
protocol are suitable for operation with the i-PORT.
GSM Device:
It is currently possible to use GSM-Modems from Siemens (TC 35 or MC 35). Full functionality of the i-PORT
is available when using these modems because of the implementation of an RAS Server. This means that it is
also possible to configure the i-PORT over a browser by dialed-up GSM.
Some modems need a permanent connection between Pin 4 (DTR) and Pin 6 (DSR) to achieve full functionality.