Los Angeles Clock Restore and Clock Restoration

Understanding the Distinction between Energy Supply and Time Supply of Synchronized Clocks


Excessive-quality clocks that keep in exact synchronization should have entry to 2 essential sources to function efficiently: An influence supply and a time supply.

Nonetheless, phrases like “wi-fi clocks” and “wired clocks” are generally used however usually misunderstood. On this article, you’ll study extra about these phrases and what they imply for synchronized clocks in your constructing. 

Wired and wi-fi time sources

Synchronized clocks want a supply from which to tug the correct time. Their capability to entry that supply is perhaps by a wired connection or a wi-fi connection.

Wi-fi clocks get their time supply over the air, similar to by a Wi-Fi community or a wi-fi transmitter that will get its time supply from a NIST time sign, GPS, Web time server, or different supply.

In both case, the wi-fi clocks are synchronized by the air. The ability supply for a wi-fi clock is usually a battery, however it can be an AC-powered electrical connection, relying on the kind of clock.

In the long run, these clocks are known as “wi-fi clocks” as a result of they get their time supply – however not essentially their energy supply – wirelessly.


Wired clocks get their time supply from a wire, similar to an Ethernet cable. The clocks are sometimes powered by a single cable that has a number of wires for energy and time correction. For instance, Energy over Ethernet clocks draw each energy and time updates from an Ethernet connection to your group’s community.

In abstract, wired clocks are known as “wired” within the business as a result of they get their time sign from a wired connection.


The underside line: Which time period to make use of?

Within the clock expertise world, “wired” and “wi-fi” often seek advice from how the clock retrieves its time correction. The precise energy supply for the clock could range.

For instance, if a clock is wi-fi (like a Wi-Fi community clock), it doesn’t have a wired connection circuit to the time supply. That very same Wi-Fi community clock may very well be powered by batteries or it may very well be plugged into the wall. The selection relies on the client’s choice and constructing infrastructure.

For extra questions on clock expertise and which energy or time supply is finest in your constructing or campus, contact our clock specialists or name us at 1-800-328-8996.

Useful Hyperlinks

Full Wi-fi and Wired Clocks Techniques

Wi-Fi and PoE Community Clocks