Novatel DL-V3 user manual Lightning Protection Notice, What is the hazard?, Hazard Impact

Notice

CE NOTICE

The enclosures carry the CE mark.

WARNING: This is a Class B product. In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures.

"Hereby, NovAtel Inc. declares that this DL-V3 is in compliance with the essential requirements and other relevant provisions of Directive 1999/5/EC."

Lightning Protection Notice

What is the hazard?

A lightning strike into the ground causes an increase in the earth's potential causing a high voltage potential between the centre conductor and shield of the coax cable. Voltages directly applied onto the centre conductor "roll off" and arrive after the shield pulse producing a high voltage potential between the centre conductor and shield of the coax cable.

Hazard Impact

A lightning strike causes the ground potential in the area to rise to dangerous levels resulting in personnel harm or destruction of electronic equipment in an unprotected environment. It also conducts a portion of the strike energy down the inner conductor of the coax cable to the connected equipment.

Actions to Mitigate Lightning Hazards

See also Figure 1 on Page 18 while reading these guidelines:

1.Do not install the external antenna lines extra-building during a lightning storm.

2.It is not possible to avoid overvoltages caused by lightning, but a lightning protection device may be used to shunt a large portion of the transient energy to the building ground reducing the over voltage condition as quickly as possible.

3.Primary lightning protection must be provided by the operator/customer according to local building codes as part of the extra-building installation.

4.NovAtel recommends installing a secondary lightning protection device. The coaxial cable entering the building is connected to protective ground through the primary and secondary lightning protection.

DL-V3 User Manual Rev 3 17