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Chapter 2 – Getting Started
Multi-Tech Systems, Inc. MultiModem Wireless Modem with Ethernet Interface (S000375F) 10
Optional Fused DC Power Connection
Fused DC Power Connection
• Connect the direct-DC power supply cable into the DC
power source on the vehicle or machine in which you are
mounting the modem. Be sure the GND connection is
correct.
• Connect red wire to + (positive) and black wire to –
(negative).
Note: For automotive application: according to the type of
application, you can use permanent “+” or key-
switched “+”. Connect the power supply to its source
(for example, in a mobile situation, to the vehicle’s
DC fuse/terminal block).
Warning: Over-voltage protection is provided on the
device. To ensure complete protection, you may want to
add additional filtering to the DC input.
Optional – Attach the Modem to a Flat
Surface
Before you mount your modem to a permanent surface, verify signal strength, refer to Getting Started, AT Command
for Verifying Signal Strength in Chapter 3.
The modem can be panel mounted with screws spaced according to the measurement shown.
Old Chassis
New Chassis