CHAPTER 3 INSTALLATION PROCEDURE

1. PRECAUTIONS

1.1Grounding Requirements

The system grounding must have a specific ground resistance and AC noise level, and is to be connected to a pre- determined terminal in the PBX. Standard grounding requirements are as follows:

Communication grounding: Less than 10 ohm

Protective ground for PIM: Less than 10 ohm

Note: The AC ripple on these various grounds should be less than 0.5 Vp-p.

CAUTION: Grounding circuit continuity is vital for safe operation of telecommunication equipment. Never operate this equipment with the grounding conductor disconnected.

NDA-24219CHAPTER 3

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Revision 2.0

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NEC NEAX1000IVS system manual Precautions, Grounding Requirements