XT55 AVL Software Instructions User’s Guide
Confidential/Preliminary s
mo b i l e
XT55_avl_ug_V01 Page 8 of 20 15.03.2004
2 How to configure and evaluate the module XT55
The module XT55 GSM/GPS device allows a quick and uncomplicated configuration and
evaluation by the user via local RS232-interface (directly connected to the serial port) or via
remote (e.g. installed in a vehicle) GSM (air link).
With WindowsÔ HyperTerminal application (utility that is preinstalled on all versions of
Windows 98, 98SE, Windows ME, Windows NT, and Windows 2000) it is possible to receive
GPS position data and alarm status reports, as well as to execute a range of remote
configurations.
If the module XT55 is configured remotely, prerequisite is the connection of a suitable GSM
modem.
The configuration possibilities mainly cover the following areas:
1. GPS
· History function
- Activation of predefined time and speed as a condition for storing position data in the
internal history memory, as well as the option of remotely retrieving the history.
· GPS polling (NMEA commands, data calls)
- NMEA command remote request the current status of alarms, start position request.
- Start data calls directly to the GPS position surveillance of a module XT55.
2. Request the current status of GPIOs
· 2 I/O

2.1 Terminal emulator setup

Here below is an example based on the Windows™ HyperTerminal application (terminal
emulator program).
The instructions below describe how to use the module XT55 with a PC running Windows
2000.
On the first time power-up you can use terminal software, which makes the communication
with modem through a RS232 serial port possible. The following example is using the Hyper
Terminal in Windows 2000.