Chapter 3 – Setup/Configuration Examples
Multi-Tech Systems, Inc. MultiModem Wireless EDGE, GPRS, and CDMA Modems with GPS (S000376A)
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Chapter 3 – Setup/Configuration
Examples
Application Example 1
In this example, the GPS side of the MultiModem is monitoring GPS locations and the wireless modem side of
the MultiModem is waiting for incoming data.
A portable workstation, such as a laptop or handheld PC, is connected to this wireless modem to both serial
ports – the GSM/CDMA port and the GPS port.
1.
Using an RS-232 cable, connect the GPS connector jack to portable PC’s serial port.
2.
Using an RS-232 cable, connect the GSM/CDMA jack to the PC’s other serial port.
3.
Attach both antennas (the GPS antenna and the GSM/ CDMA antenna).
4.
Set both the S1 and S2 switches
up
(the default). If you have not changed the switches previously,
then they will be in the default position. Note that the switches are located behind a cover plate on
the connector side of the modem. The cover plate can be removed when you need to change the
switch settings.
5.
Connect to a power source; for example, to a cigarette outlet on a vehicle.
6.
Run your software application that reads GPS data from the GPS serial port. The wireless modem
is available to the portable PC for transferring data.
7.
Your central tracking station can then retrieve the data wirelessly from your CDMA, GPRS, or
EDGE network provider connection.
