User's Guide

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ORBCOMM
®
PROPRIETARY AND CONFIDENTIAL MATERIAL ©
10
Figure 3: SCU Mounting Location
• Mount the SCU on a solid, stable surface that is clean and free of oil, dirt, and debris.
• Fasten the SCU securely so that it is not loose and does not move easily.
• Check that the SCU’s cable reaches the VTU before you drill any mounting holes.
• Mount the SCU on a surface that does not get hotter than the maximum operating temperature
(+85°C/+185°F). If the surface may get hotter, mount the SCU with a thermal barrier between it
and the mounting surface.
• Mount the SCU antenna where it has a clear view of the sky/satellite. For a mobile installation, this
means that it is preferable to install at the highest point on the vehicle where it has a clear view of
the sky in all directions.
Figure 4: Antenna Mounting Location
• DO NOT mount the SCU close to other electrical equipment due to possible radiated and/or
conducted electromagnetic interference.
• DO NOT mount the SCU close to radar or other communications antennas. Use the following
guidelines:
> 1 m from VHF/UHF antenna
> 3 m from loop antenna
> 4 m from MF/HF antenna
> 5 m from other satellite antennas