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Chapter 2 – Setup and
Back Panel of the MultiModem with GPS
The back panel view is included to help you understand the MultiModem setup.
S1/S2 Switches
Note:
The switches as shown in the diagram above are located behind a cover plate that can be
removed when you need to change the switch settings.
S1:
Down puts the MultiModem in reset state.
Up runs the MultiModem properly.
Toggle the S1 switch down and back up to reset the MultiModem.
S2:
Up keeps the GPS data signals separate from the wireless modem.
Down allows GPS data from Port 1 to flow to the wireless modem's data in signal.
Configuring the Wireless Modem Side of the
MultiModem
1. Hardware Setup
1.
Using an RS-232 cable, connect a workstation to the GSM/CDMA connector on the MultiModem.
2.
Attach both antennas. The GPS antenna is a 50 ohm SMA antenna. The GSM/CDMA antenna is a
standard SMA antenna.
3.
Switches S1 and S2 should be in the default positions – both up.
4.
Plug one end of the power cord into the MultiModem and the other end into a live power outlet. The
PWR
LED lights up.
Warning:
for your power source. Doing so may cause power spikes. If you wish to use
the battery as a power source, add a filtering device to the DC input.
Multi-Tech Systems, Inc. MultiModem Wireless EDGE, GPRS, and CDMA Modems with GPS (S000376A)
Configuration
MultiModem with GPS Interface Back Panel
Do not connect your wireless modem directly to a vehicle's battery
Chapter 2 – Setup and Configuration
10
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