INSTALLATION GUIDE FOR UHF DAS
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Page 29
3.3.8
GROUNDING
Ground Connection
To ensure safe operation of the product, a ground (earth) connection is required. For single phase AC power source, the
product must be grounded by connecting the “earth wire” of the power cord to the ground terminal of the AC supply. For
operating this product with DC power systems (such as rectifiers), the product should not be connected to power systems
that switch open the return lead because the return lead could function as the ground (earth) connection for the equipment.
Protective Ground Connection
The enclosure must be grounded securely by connecting a copper wire (CSA 16mm
2
) to the grounding terminal on the
equipment/rack, and the other end to a protective ground (i.e. building earth point). An internationally acceptable color
code of the ground connection wire is green/yellow.
Such a ground connection implements the “Protective Ground Connection”, and must be connected to the equipment at
the designated ground point. In general, do not connect the supply before establishing an adequate ground (earth)
connection.
Construct the ground wire, and use appropriate crimp connectors where necessary. Locate and connect the equipment
grounding terminal to a protective ground (i.e. building earth point).
3.3.9
DC POWER CONNECTION FOR MU AND RU
Figure 19: DC power connection for MU and RU
⚫
The positive pole of the external DC power supply is connected to terminal "0";
Positvie
Negative
