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TimeSource 3500
47
Engineering & Ordering
097-72050-01 Issue 7: August 2003
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Procedure A. Site Survey
Step
Action
1
Determine the shelf location.
2
Determine the best location for mounting the antenna (less than 1,000 ft of cable
from the shelf). Use the guidelines and considerations in the Roof Antenna
Location and Cabling Guidelines section.
3
If a roof-mounted antenna is installed, determine the location of the grounding
point for the lightning suppressor, then determine the location of the lightning
suppressor. The cable length between the lightning suppressor and the grounding
point must be less than 15 ft. If the grounding point is inside the building, the
cable length between the grounding point and the cable entry must be less than
50 ft. Valid lightning suppressor grounding points are:
• Valid ring ground system (usually for roof-mounted lightning suppressors)
• Structural steel of building (for interior-mounted or exterior-mounted lightning
suppressors, attach with a cad weld)
• Central Office ground plate (usually for interior-mounted lightning suppressors)
4
If a roof-mounted antenna is installed, two lengths of cable are required. Plan the
cable route and measure the length of cable required between the antenna and
the lightning suppressor, and between the lightning suppressor and the shelf.
5
If a window or wall-mounted antenna is installed, plan the cable route and
measure the length of cable required between the antenna and the shelf.
6
Determine the two separate –48 V power sources for the shelf. If only one –48 V
power source is available, it must be cabled to both TimeSource 3500 power
inputs.
End of Procedure
Содержание TimeSource 500
Страница 1: ...TimeSource 3500 GPS Primary Reference Source 097 72050 01 Issue 7 August 2003 ...
Страница 6: ...6 TimeSource 3500 Contents 097 72050 01 Issue 7 August 2003 ...
Страница 85: ...3 Chapter Installation This chapter is the sequential order of procedures for installation and power up ...
Страница 161: ...4 Chapter TL1 Reference This chapter provides information for using the TL1 language ...
Страница 271: ...6 Chapter Specifications This chapter provides equipment specifications ...
Страница 297: ...Index ...