Multi-Tech Systems MTCBA-E-EN User Manual

Chapter 2 – Getting Started 

Multi-Tech Systems, Inc. MultiModem Wireless Modem with Ethernet Interface (S000375F) 

 

 

 

• 

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).

 

 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).  

 Over-voltage protection is provided on the 

device. To ensure complete protection, you may want to 
add additional filtering to the DC input. 

 

 

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