Installing the Mobile Subscriber Unit Broadband Wireless Access System Part Number: 104-0255-0002 i
Expedience is a trademark of NextNet Wireless, Inc. ©2005 NextNet Wireless, Inc. All rights reserved. THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS GUIDE ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS GUIDE ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT WARRANTY OF ANY KIND. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCT.
Note: NOTE 1 to Table 1: Occupational/controlled limits apply in situations in which persons are exposed as a consequence of their employment provided those persons are fully aware of the potential for exposure and can exercise control over their exposure.
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CONTENTS Welcome ..............................................................................................1 Installation overview ............................................................................1 Determining where to install the MSU ...............................................1 Cabling overview ...................................................................................................2 Installing the MSU inside the automobile .........................................
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Welcome This guide describes how to install and use the Expedience mobile subscriber unit (MSU). The MSU maintains contact with base stations in order to provide wireless high-speed Internet access to subscribers in moving vehicles, such as cars, trucks, and vans. This guide is intended for use by professional equipment installers. Service providers should not attempt to install the MSU. Installation overview This section provides an overview of the tasks you will perform when installing the MSU.
Cabling overview Figure 1 illustrates how the antenna connects to the MSU. It also shows how the cables connect the MSU to a power source, to the vehicle’s frame for grounding, and to the subscriber’s computer.
Installing the MSU inside the automobile The back of the MSU is a mounting plate with 4 holes. The MSU can be mounted on an equipment shelf in the vehicle or on the side of the automobile. The mounting holes on the back of the MSU are vertically spaced 9 x 5/8 inches apart center to center. The horizontal holes are spaced 3 x 1/2 inches apart. Figure 2 shows the back of the MSU.
Installing the antenna You should only use the antenna that NextNet has approved for use with the MSU. The antenna is installed on a horizontal surface on the exterior of the vehicle, usually on the trunk or on a roof. To secure the antenna to the vehicle, you can use one of the following mounting options: • You can use a magnetic mount to secure the antenna to the vehicle. • You can use a regular mount, which requires you to drill or use an existing hole through the exterior of the vehicle.
Powering the MSU You must prepare the power cable for installation before you attach the power cable to the battery. Preparing the power cable for installation The power cable is 21 feet long. You must insert an 5 Amp, normal blow fuse from the assembly kit into the power cable’s fuse holder in order to protect the MSU from power surges. You can use the cable at its full length, or you can cut the power cable down to the desired length.
Grounding the MSU The grounding cable is 2 feet long. On vehicles, the grounding cable must be connected to the frame (ground) of the car. For example, it is NOT acceptable to attach the ground cable to the frame of a seat, unless the frame also connects to chassis ground. Attaching the cable harness to the MSU The cable harness plugs into the lower corner of the MSU. To plug in the cable: 1 Make sure the connector on the cable harness is fully seated to the MSU connector.
Table 1 describes the MSU connector’s pins. Table 1 Wiring diagram for MSU connector Pin number Purpose 1 2 3 4 5 6 7 8 EN TX+ EN TXEN RX+ EN RXpower n/c ground n/c Connecting the MSU to the computer To connect the MSU to the computer: 1 Use the RJ-45 plug on the cable harness into the RJ-45 coupler which is supplied in the installation kit. 2 Connect an RJ-45 cable from the computer into the other end of the coupler. Figure 4 illustrates the pins for the RJ-45 connector on the cable harness.
8 Installing the mobile subscriber unit
INDEX A antenna 4 B bracket mounting 3 C cabling diagram for LPB 2 G grounding MSU 6 M Mounting bracket for MSU 3 MSU mounting bracket 3 MSU connector pin diagran 7 P pin diagram MSU connector 7 RJ-45 connector 7 power cable preparing for installation 5 R RJ-45 connector 7 9
10 Installing and using the Expedience OSU
