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Replacement Secondary Clocks

We can build secondary clocks compatible with these existing master clock systems:

Lathem

  • LTR4-512
  • LTR8-512
  • LTR-512M

Masterclock

  • GMR 1000
  • GMR 5000

Sapling

  • SMA 2000 Series
  • SMA 3000 Series
  • NTP 7000 Series
  • NTP 8000 Series

American Time System

  • AllSync IQ Series
  • ATS Series
  • MC Series
  • SiteSync series

Rauland

  • 2524 Master

Midwest Time

  • MTC-6000

Bogen

  • BCMA 2000
  • BCMA 3000
  • BCTP 7000
  • BCTP 8000

Linortek

  • NetBell Bell System

We get it. Replacing an entire existing clock system with a DDS master clock system might not be feasible at the moment. The change can be costly and time consuming. However, that doesn’t mean you can’t start investing in a DDS clock system. Digital Display Systems also manufactures replacement secondary clocks compatible with other existing master clocks and network systems in the industry. Whether you are looking to add supplemental clocks or to replace older failing clocks, DDS has a solution. 

Some brands we cover include: Lathem, Faraday, Honeywell, Simplex, Stromberg, Dukane, American Time & Signal, Rauland, Edwards Clocks, standard Electric clocks or any brand that synchronizes to certain standards listed below.

As all DDS clocks are custom made-to-order, we can make a digital clock to replace an older analog or digital clock with any of the below wired synchronous corrections. Looking for a little more than just a synchronized clock? Add a DDS Bell System or Timer Application to your secondary clock while still receiving synchronization from your old clock system. If you don’t see your system listed, feel free to contact us and speak with technical support for a free consultation.

Compatible Synchronizations and Methods for Secondary Clocks

58 Minute Correction

  • Wired synchronous 5:58:08 correction between 12 AM to 12 PM
  • With relay settings, configure Input from master clock system with 58-minute correction to secondary slave clock, or Output to other new or existing clocks
  • DDS Standard:
    • Synchronization begins at 05:57:50 AM by applying a correction signal for 19 seconds daily between 12 AM to 12 PM
  • Other Industry Standard Examples:
    • Hourly 55 second corrections between XX:58:05 and XX:59:00 and twice daily corrections at 5 AM and 5 PM consisting of 10 relays of 95 seconds
    • Hourly one minute correction between XX:58:00 and XX:59:00 and twice daily corrections at 5 AM and 5 PM consisting of 12 relays of 65 seconds on, 25 seconds off
    • Hourly one minute correction between XX:58:00 and XX:59:00 and twice daily corrections at 5 AM and 5 PM consisting of 12 relays of one minute on, two minutes off

59 Minute Correction

  • Wired Synchronous XX:59:00 correction between 12 AM to 12 PM
  • With relay settings, configure Input from master clock system with 58-minute correction to secondary slave clock, or Output to other new or existing clocks 
  • Other Industry Standard Examples:
    • Hourly 8 secod corrections between XX:57:54 and XX:58:02 and twice daily corrections at 5 AM and 5 PM by applying a correction signal for 12 seconds from 5:57:54 to 5:58:08

IRIG-B

  • Inter-range instrumentation group (IRIG) time codes are a standard format for transferring timing information used commonly by the U.S. military. IRIG-B, specifically, is defined by its 100 Hz Bit rate
  • Transmitted information includes: Years, Daylight Savings Times, Leap seconds, and Local Time Zones
  • Secondary clocks can receive input from master clock systems operating on IRIG-B or from the IRIG-B source itself
  • DDS also offers master clocks that receive IRIG-B information and transmit it to other secondary slave clocks

Midnight Pulse Reset

  • Applying a pulse for more than two seconds at midnight resets and updates clock to the correct time

Once a Day Pulse

  • Wired synchronous correction allows user to manually configure the the time and length of the relay signal to secondary clocks.
  • Clock relay will close a specified time for a certain amount of time defined by the clock circuit settings

Dukane

  • Secondary replacement clock will receive input pulse in miliseconds from Dukane master clock to either increment the clock by one minute or reset the clock back to midnight 12 AM

National Time / Rauland Correction

  • Wired synchronous correction at any time of the day specified by National Time master clock system or Rauland master clock system
  • Examples:
    • Hourly 25 second correction from XX:00:00 to XX:00:25
    • Twice daily 24 minute pulse correction from 6:00:25 to 6:24:25, both AM and PM
    • Twice daily corrections at 6 AM and 6 PM consisting of 24 cycles of 25 seconds on, 35 seconds off

Rauland Digital

  • Wired synchronous correction resets secondary clock at 12:00:00 AM daily by applying half second pulse every minute. At the end of the correction pulse, clock will jump to the correct time.

Simplex BCD

  • Binary Coded Decimal (BCD) wired synchronous hourly or daily correction
  • Secondary clocks can receive Input from existing BCD master clock system
  • Or send Output to other BCD slave clocks