Alliance Communication Solutions | Master Clock
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Master Clock

A master clock is a precision clock that provides timing signals to synchronize slave clocks as part of a clock network. The master clock in such installations is controlled by an accurate quartz crystal oscillator, usually referenced to an external frequency standard such as MSF, which is part of a world-wide timekeeping system.




  • Synchronized clocks throughout the building.
  • Optional alert messages and/or timer function.
  • Optional countdown counter.




  • Easy to install. Requires only a single Cat-5 connection per clock display.
  • All clock displays can be synchronized to a single master clock.
  • All clocks remain running by simply installing a single UPS at the hub.




  • Can be used stand alone or be synchronized to a master time source.
  • IRIG-B, Ethernet, RS-232 and RS-422 interface formats available.
  • Each powered hub can drive up to 12 displays depending on size.
  • The patch panels have built in power and status monitoring.
  • The remote clock displays can be up to 1000 feet from the hub depending on display size.