Sierra Wireless GL6110 User's Guide download pdf (Page 76)

WA_DEV_GL6100_PTS_001 Rev 002 May 24, 2010 76

14. Recommendations When Using the

GL61x0 on Trucks

Caution: The power supply connection of the GL61x0 must never be directly connected to the truck battery. For

the GL6110 – USB, it should connect to the USB port of the Car PC accordingly.

14.1. Recommended Power Supply Connection on

Trucks

All trucks have a circuit breaker on the exterior of the cabin. The circuit breaker is used for safety

reasons: if a fire blazes in the trucks, (for example, on the wiring trunk) the driver may cut the current

source to avoid any damage (explosion). The circuit breaker is connected to the truck ground, most

often associated with the fuse box.

Most truck circuit breakers do not cut the Positive Supply line of the battery, but cut the ground line of

the latter.

Figure 30. Recommended Power Supply Connection on Trucks

The figure above shows the recommended power supply connection where the ground connection of

the GL61x0 is not directly connected to the battery but is connected after the Circuit Breaker (on the

truck ground or the fuse box).

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Sierra Wireless GL6110 User's Guide Page 76