Microsemi SyncServer S200 User Manual page 103

Window Antenna Placement
For window mounted antenna installations, use the window with the best view of the sky. For
windows with equivalent views, orientations that face the equator are preferred. Generally
more satellites will be in view toward the equator than away from it. East or west facing win-
dows will also work. Polar facing windows will also work but in general are not preferred. Win-
dows that have the best view of the sky are always preferred regardless of orientation.
A typical window mounting with the antenna is shown in the preferred window.
Guidelines
For best results with window mode:
Position the antenna near the lower windowsill. This improves upward visibility of the sky.
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If multiple sites are available, choose the one with the widest view of the sky and tilt the
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antenna toward the "opening".
On the side of a building, the corners offer better visibility (270 degrees) than flat walls
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(180 degrees).
A SyncServer equipped with the high-stability Rubidium oscillator option can provide pre-
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cise time for extended periods while GPS is unavailable.
Secure the antenna so it won't fall or get knocked out of position.
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To improve signal strength, test different window locations, shorten the antenna cable
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length, avoid unnecessary connectors, and use an in-line amplifier option. (Signal
strength is visible on the STATUS - GPS page.)
Avoid windows with metallic film coatings, window blinds, overhead obstructions, and
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foliage, all of which can block GPS signals.
Verify that the NTP - Associations page is configured with valid NTP servers or peers that
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the SyncServer can rely on if GPS is unavailable.
Configuring Window Mode
After setting up the antenna:
997-01520-02 Rev. G2..........................................................................
Installation Guide
Page 103