Symmetricom TimeSource 3600, Руководство пользователя

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Description
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Clock Extractors
A clock extractor circuit extracts a timing signal from each
external reference source. (External sources, other than the GPS
antenna, are optional.) The extracted timing signal is sent to the
BesTime Ensemble Timing Generator.
Power Supply
A power converter filters and converts
–
48 volts dc power supplied
to the shelf into the voltages required by the circuitry.
BesTime Ensemble Timing Generator
Clock signals from the GPS antenna (via the IF interface), local
oscillator, and two optional E1 span lines are used as sources by
the BesTime algorithms in the BesTime Ensemble Timing
Generator. The signals are analyzed for MDEV, TDEV, and other
phase and frequency characteristics.
The BesTime Ensemble Timing Generator uses mathematical
models to analyze each clock. The ensemble algorithms use the
comparisons and analyses to generate a highly stable timing
signal, which uses the best qualities of all inputs.
E1 or Analog Outputs
The BesTime Ensemble Timing Generator provides the timing for
the E1 or analog (2.048 MHz) timing signal available at the E1
OUT A and B connectors. E1 is provided in a framed, all-ones
format, which can be set to CAS, CAS4, CCS, or CCS4 framing.
2.048 MHz is provided in accordance with G.703/10.