How Many Satellites Are Necessary For Me To Operate The S100; How Do I Know If The Satellite Signal Strength Is Good; What Is The Maximum Antenna Cable Length For Use With The S100; What Are The Available Antenna Cable Lengths And Antenna Requirements - Symmetricom SyncServer S100 User Manual

How many satellites are necessary for me to operate the S100?

Four. The unit will usually track six to eight satellites.

How do I know if the satellite signal strength is good?

Any signal over 6 is good and usable by the S100. The unit will continue to track a satellite
down to 3 once it has acquired it at a level 6 or over.

What is the maximum antenna cable length for use with the S100?

A maximum length of 300 feet can be used with the standard (Bullet II) antenna. From 300–
500 feet, the High-gain Antenna option is required. If you need longer lengths, please contact
Symmetricom Customer Assistance (see
: The GPS and bullet antennas and antenna cables described in this manual have been
Note
replaced as described in

What are the available antenna cable lengths and antenna requirements?

Use the following table:
Cable length and Type
50-100 feet (15-30m), Belden RG-58
100-300 feet (30-91m), Belden 9913
100-300 feet (91-152m), Belden 9913
Over 500 feet (152m)
: The bullet antenna cable described in this manual has been replaced as described in
Note
"Appendix E" on page

What are some guidelines for correctly cutting the cable, using splitters, and using cable connectors?

Some critical "do's and don'ts" are:
• Do use pre-made kits from Symmetricom.
• Do install the antenna where there are no obstructions—either on the roof, or an
unobstructed view of at least 30-degrees above the horizon.
• Do not split the antenna cable signal to try to use the signal to drive other GPS devices.
• Do not cut the cable to a shorter length. Instead, bundle any excess cable. Correct
antenna cable length—even if you do not "use it all"—is critical to proper S100
operation. The cable should have a gain within 15dB–25dB.
S100 User Guide – Rev. D – June 2005
"Appendix D" on page
"Appendix E" on page
141.
137).
141.
Antenna
Standard Bullet-type
Standard Bullet-type
High-gain
Contact Symmetricom
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3
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