User's Manual Part 1

Site Inspections – continued

PRELIMINARY

1X SC480 BTS Hardware Installation, Optimization/ATP, and FRU

MAY 2004

2-4

Grounding Inspections

Indoor installations

For indoor installations refer to the Grounding Guideline for Cellular

Radio Installations (68P81150E62) for all grounding inspection

procedures.

Verify the following:

S All ground cables have a bend radius of 20 cm (8 inches) or more.

S Metallic lines (span, phone[modem], RGPS, power and antenna) that

enter or leave the site should be equipped with a 3-electrode gas tube

protector. The ground side of the gas tubes should be tied to the

Master Ground Bus (MGB).

S All installed cable racks (in the same ground zone) are jumpered

together.

Cable racks in an Isolated Ground Zone (IGZ) are not to be

connected to a cable rack in a non-IGZ. For more

information on IGZ, see Grounding Guideline for Cellular

Radio Installations, Motorola part number 68P81150E62

or Appendix C of Standards and Guidelines for

Communications Sites (Motorola part number

9882904Y01)

WARNING

Outdoor Installations

For outdoor installations refer to the Grounding Guideline for Cellular

Radio Installations (Motorola part number 68P81150E62) or Appendix

C of Standards and Guidelines for Communications Sites (Motorola part

number 9882904Y01) for all grounding inspection procedures.

Verify the following:

S All outdoor enclosures are grounded to system masrter ground.

S All enclosures have conduit attached.

S It is recommended that all metallic lines (span, RGPS, power, and

antenna) that enter or leave the site are be equipped with a surge

suppression device (lightning arrestor).