Physical Description - Symmetricom TimeSource 3600 User Manual

GPS antennas must have line-of-sight access to the transmitting satellites. Any
structure that interferes with, or blocks, the view of the satellites disrupts the
reception of the signals, and can adversely impact the timing performance of a
receiver.
The TimeSource 3600 bridges frequent GPS outage periods with BesTime
algorithms, an ultra-stable Rubidium local oscillator and advanced holdover
technology. The technology anticipates the outages and uses BesTime-generated
predictor values to optimize the performance of timing without direct satellite input.

Physical Description

The TimeSource 3600 consists of a shelf, a plug-in card, an antenna, cables,
hardware, and software. Optional system configurations include eight additional E1
or analog 2.048 Mhz outputs, two E1 synchronous clock insertion unit (ESCIU)
ports, four IRIG-B TOD timing outputs, or eight mixed E1/T1 outputs.
The shelf (Figure
One RU (4.45 cm) of air space above the TimeSource 3600 is required for proper
ventilation. Other than a communications connector on the front panel, all
connectors are at the connector panel.
Four types of antennas are available:
roof antenna for installation outdoors, usually on a roof
mechanical antenna for installation indoors, mounted on a window sill or wall for
reception through a window
self-adhesive antenna for installation indoors, adhered directly to a window
wall antenna for installation outdoors, through a hole in the wall
097-72060-01 Revision J – June, 2007
1-1) can be mounted in a 48 cm rack or an ETSI 53.5 cm rack.
Chapter 1 Overview of the TimeSource 3600
Physical Description
TimeSource 3600 User's Guide 23