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TimeSource 3500
Engineering & Ordering
097-72050-01 Issue 7: August 2003
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Roof Antenna Location and Cabling Guidelines
DANGER:
Do not select an antenna location that could be
an electrical or physical hazard to work persons or
equipment. Avoid proximity to all high-voltage sources.
Mount in an easily maintainable location.
The ideal roof antenna location provides a clear, unobstructed
view of the sky from the zenith to the horizon line, and 360
degrees around the horizon.
A compromise often must be made between location and satellite field
of view. With a smaller field of view, the TimeSource 3500 can use
fewer satellites in the solution for GPS derived time. The TimeSource
3500 will operate with an average of one satellite in view for 40 percent
of the time in a day.
Signals closer to the horizon are often subject to multipath effects,
which degrade the timing solution. The TimeSource 3500 can be
set to ignore, or mask, all signals from the horizon up to a chosen
angle of elevation (mask angle). (See Figure 9.)
Summary of Contents for TimeSource 500
Page 1: ...TimeSource 3500 GPS Primary Reference Source 097 72050 01 Issue 7 August 2003 ...
Page 6: ...6 TimeSource 3500 Contents 097 72050 01 Issue 7 August 2003 ...
Page 161: ...4 Chapter TL1 Reference This chapter provides information for using the TL1 language ...
Page 271: ...6 Chapter Specifications This chapter provides equipment specifications ...
Page 297: ...Index ...