Sierra Wireless MP 875 - Manual (Page 22)

MP875 Modem User Guide
22 2130808
Required equipment
Package contents
Each MP modem box contains:
• The MP modem
• A mounting template
• Mounting screws and washers
• An installation and documentation CD
• A power harness
If any of these are missing, please contact your account
manager.
Additional required equipment
To install the MP modem, you need the power harness (or
existing MP 750 or MP 775 power harness), or an AC/DC
adapter (for office installations), mounting template, and the
screws and washers that come with the device.
You may also require:
• A USB, Ethernet, or 9‐pin serial cable. This must be long
enough to run from the mounting location of the MP
modem to the computer.
· The maximum length for the serial or USB cable is 5.5 m
(18 feet). The USB cable must have a Type A male
connector at the computer end and a Type B male
connector at the MP modem end.
· The Ethernet cable should have RJ‐45 connectors. The
MP modem’s performance is affected by the type of
Ethernet card in the computer and the type of cable
used. The minimum requirement for the Ethernet cable
is an unshielded twisted pair (UTP) cable, category 3 or
4. For better performance, use a shielded, category 5
cable. The maximum length is 100 m (328 feet).
Note: If GPS is being imple-
mented, you require either two
antennas or a combination Main
RF and GPS antenna. • Main Radio frequency antenna and cable. The antenna
must have the appropriate regulatory approval, 50 ohm
impedance, and a male TNC connector. It may be a hard or
magnetic‐mount antenna.
• Access Point antenna and cable. (MP 875 modem only)
• GPS antenna and cable (optional). This is necessary if you
use the built‐in GPS module.
• Power supply. This is usually the vehicle’s battery.
• Appropriate electrical grounding. If a ground wire is
necessary, use a 16‐gauge wire and connect it to a ground
screw.