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(RS) Radio Sync, (EN) Ethernet, (PL) Power Line Synchronization, and (HX) Ultra-High Precision Clocks


The Wireless Sync System (RS) transmits time sync data to any number of analog or digital clocks over a wide area. The Ethernet synchronization option (EN) allows connecting clocks to your existing computer network. The Power Line synchronization option (PL) sends sync data over the building's electrical wiring. The Ultra-High Precision clock option (HX), completely eliminates the need for master clocks and sync wiring altogether.


(RS) Wireless Clock System


Key Features
  • Digital clocks are available in thousands of configurations
  • Eliminate all wires with battery powered analog clocks (5-year Lithium battery included)
  • Master clock configurations available: GPS, Ethernet NTP or UDP, IRIG-B, CDMA (cell tower), PC and others.
  • One master clock for facility or campus wide coverage (no building is too large)
  • Eliminate Daylight Saving Time clock adjustments
  • Eliminate inaccurate time and attendance issues (clocks are always split-second accurate)
  • Provide accurate time for facility insurance and legal documents validation
  • Can be expanded with other wireless solutions
  • All clocks not only display the same time, but the legally correct time.


BRG Wireless Clocks offer the latest and most innovative way to incorporate GPS, NTP Ethernet and other synchronized time throughout your facility, providing you with the benefits of improved productivity and reduced maintenance costs.

The BRG Wireless Clock encoder is the heart of the system which offers wireless analog clocks, wireless digital clocks, a PC and LAN clock synchronizer, wireless alphanumeric LED display boards and a wireless synchronizer device to upgrade older wired clocks. BRG Wireless Clock transmitters utilize the UHF radio paging bands and offers transmitter power able to cover very large facilities. In most cases, only one transmitter and one antenna is required to provide optimum RF coverage for your facility. The BRG Wireless Clock system is fully expandable allowing you to start with a system that fits your immediate needs with the flexibility to add more devices and wireless solutions as needed later.





(EN) Ethernet Clock Synchronization Option



(EN) Ethernet Clock Synchronization;

Clock synchronization over the existing network cable eliminates or greatly reduces the need for sync wiring. The ethernet interface may be configured to operate in two modes, NTP or UDP. Using NTP mode, the clocks will obtain the time directly from U.S. Government time servers over the internet. The UDP mode allows the clocks to receive time broadcasts from a local master clock or PC running a time broadcast program. Either method means all clocks on the network will have the same correct time.

The NTP time server list may be customized to include specific timer servers. The UDP broadcast method is a simpler protocol used for the local network only. The digital clocks are seamlessly integrated with the existing ethernet computer network.

An RJ-45 ethernet jack is available at the back of clock for connecting to the ethernet network cable. Standard 10 BASE-T half-duplex Ethernet is supported. Communications is transparent. UDP/IP time packets are broadcast on port 16000. Port 16437 is used to configure clocks over the network.

The ethernet time distribution method may be combined with other sync methods such as power line sync (PL option) to sync clocks in areas where network cable is not easily accessed or unavailable.

The master clock may optionally include a GPS or CDMA time receiver for the correct time, all the time. If no time receiver is used, the master clock can be manually set. For special applications, other options may also be used with power line communications including, serial wire sync, IRIG-B, SMPTE, midnight reset pulse sync, and more.

In addition to updating slave clocks, the master clock can send the time to all Windows based computers on the local area network. Or, a PC can be used in place of the master clock to obtain the correct time from the internet and pass it on to all computers and slave clocks connected to the local network. Windows software drivers are included.

This option adds ethernet sync communications to digital clocks. When ordering, simply add the letters EN to the clock model number, i.e. BRG440-EN.

Power for the clock is supplied using an AC adapter or mains power supplied directly to the clock. See the power configuration section on the options page for more power supply configurations. See Power over Ethernet (PoE) below for a method of powering the clock over the Ethernet cable.



Power-over-Ethernet Overview (PoE)

Power Over Ethernet

Power-over-Ethernet (PoE) is a network standard based on IEEE 802.3af that provides a means of delivering power to devices connected to the LAN. This technology eliminates AC electrical wiring, wall transformers, allows centralized UPS backup, and is fully compatible with both powered and non-powered Ethernet devices.

In addition to providing time synchronization and control over Ethernet, PoE enabled Ethernet cable provides power to the clock. System installers need run only a single Ethernet cable that carries both power and data to each clock. This allows greater flexibility placing clocks and, in most cases, significantly decreases installation costs. BRG clocks are fully compliant with the IEEE 802.3af standard for providing power over Ethernet. The clocks will work with older non-standard and passive power sources, as well as newer, auto-sensing PoE switches and mid-span power injectors.

Power-over-Ethernet begins with a Ethernet power source such as a PoE compatible Switch or a mid-span power "Injector". These devices insert power onto the Ethernet cable. The power source is typically installed in the "wiring closet" near the Ethernet switch or hub.

Clocks may be ordered as PoE compatible by adding the (P13) power option. This option adds the necessary circuitry to fully implement the IEEE 802.3af standard. PoE is able to supply a maximum of about 15 watts of power over the Ethernet cable. This means that not all clocks are candidates for PoE.

If the access point is not PoE compatible, BRG offers single port mid-span power injectors designed to provide power to a single clock (P14 power option). Multiport mid-span PoE power injectors are available from most network equipment vendors. The voltage injected is 48 volts DC at 0.35 Amps.

Power Over Ethernet







(PL) Power Line Communications


(PL) Power Line Communications;

Clock synchronization over the existing power line eliminates or greatly reduces the need for sync wiring. First, the master clock places the time onto the power grid. Then, all slave clocks receive the time from the power line. This means No New Wires. All digital clocks within a one mile diameter circle around the master clock will display the same time by simply communicating over existing power lines.

 The distance between the master and slave clocks may be up to 1,500 feet (500 meters), depending on line loading and other factors. Furthermore, slave clocks may be configured to repeat the time signal, for total range up to 3,000 feet (1,000 meters) between the master and slave clocks. This amounts to a communications area over one mile in diameter. Multiple master clocks may be used for greater range or when building power is supplied from multiple distribution transformers. The power line sync signal will not pass through power distribution transformers.

Two power line communication models are available. PL is for common, single phase power lines, and PL3 is for industrial, three phase power lines. The three phase model is only used on the master clock. The PL (single phase model) is used in most installations, including most three phase installations. Valid power options include P2 (110 volts AC), P3 (220 volts AC), P5 (100-240 volts AC), P8 (110 volts AC with 12' power cord) and P9 (110 volts AC with flat plug).

The master clock may optionally include a GPS or CDMA time receiver for the correct time, all the time. If no time receiver is used, the master clock can be manually set. For special applications, other options may also be used with power line communications including, serial wire sync, IRIG-B, SMPTE, midnight reset pulse sync, and more.

This option adds power line communications to digital clocks. When ordering, simply add the letters PL to the clock model number, i.e. BRG440-PL







(CR2) CDMA Atomic Time Receiver Option


(CR2) CDMA Atomic Time Receiver: This CDMA atomic time receiver is completely self contained with a small stub antenna located on top. The clock will display the correct time, with absolute accuracy, all the time.

The CDMA spread spectrum receiver can be used anywhere a cell phone can be used, even under marginal signal conditions. This internal time receiver eliminates the cost and inconvenience of running cable, as required for GPS or PC synchronization. Like GPS,the CDMA receiver will automatically select one of several transmitters, making the system redundant and extremely reliable.

There are no monthly fees or other ongoing charges associated with CDMA time reception.

CDMA transmitters are accurate to 10 millionths of a second. Atomic time and date transmissions are received, updating the clock every second of the day.

An indicator light on the display illuminates when the clock is in sync with the U.S. Atomic Clock. Because the receiver is self-contained, the time display may be moved to another room or building without rewiring.

Even if you don't need split second accuracy, receiving the atomic time means your clocks will always display the correct time.

When ordering this option, simply add the letters CR2 to the clock model number, i.e. BRG440-CR2. If you need to send the atomic time to other clocks, include the ST option to add a wire sync transmitter, or the PL option to use Power Line sync.








(HX) Ultra-High Precision Clock


(HX) Ultra-High Precision Clock; Many clocks on the market are only accurate to about 10 minutes per year, with some being much worse. A BRG clock with the HX option is accurate up to 1 second per year. The BRG Ultra-High Precision Clock option replaces the standard quartz crystal with a temperature compensated oscillator (TCXO) and companion accuracy enhancement firmware. The clock even compensates for crystal aging over long periods of operation.

Features of a BRG Clock with the HX Option:

 1. Accurate up to 1 second per year.

2. Automatic switching between Daylight Saving and Standard time

3. Power outages have no effect on time keeping (10 year internal battery backup)

4. Clocks are synchronized with the U.S. Atomic Clock before shipping.

5. No master clock required

6. No sync wire required

7. Typical time between corrections for an hour:minute display is 5 to 8 years, or longer.

8. Any BRG clock may be equipped with the ultra-high precision oscillator option.

9. Recommended temperature range is 0 to 40 degrees Centigrade.

10. Crystal aging compensation firmware for greater accuracy over long periods of operation

 When ordering this option, simply add the letters HX to the clock model number, i.e. BRG840-HX


BRG Precision Products
600 N. River
Derby, KS 67037
Call 800-295-0220 today!
(Call 316-788-2000 outside the U.S. and Canada)
Fax: 316-788-7080

Contact BRG for [Send E-Mail] more information.

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