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System install requirements for OneVue Sync 72MHz

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When installing a new system or adding new devices, learn about what should be considered to ensure a seamless installation.

First, install and configure Transmitters

Do not install or configure other Sync or Notify devices until the main Transmitter is fully operating; Transmitter and its components are installed, configured, and powered on and its time source is connected and time has been received.

For a system with Repeater Transmitters always install and configure the main Transmitter first and then install the Repeater Transmitter(s).

For a system with Repeater Transmitters always install and configure the main Transmitter first and then install the Repeater Transmitter(s).

Transmitter time transmit (broadcast) schedule

The type of antenna determines when a Transmitter transmits synchronized time updates, which should be taken into consideration when installing new devices.

  • 1 Watt Transmitter with an internal antenna: Transmits (broadcasts) a time signal continuously, 24 hours a day.

    A Repeater Transmitter transmits the time received from the main Transmitter, which is then received by clocks within its range.

  • 1, 5, or 30 Watt Transmitter with an external antenna: Transmits a time signal 24 hours a day ONLY between the 39th to the 6th minute of each hour, and changes to a standby mode and does NOT transmit a time signal during the 7th to the 38th minute of each hour (per FCC requirements). This transmit schedule can only be adjusted by Primex when necessary for additional compliance with FCC/ISED requirements.

Note

In the event of a facility wide power outage or a Transmitter is power-cycled, a Transmitter with an external antenna will transmit continuously for 8 hours upon restoration of power. Power-cycling a Transmitter can be used to set/reset the system devices synchronized time.

Do not power-cycle a Transmitter when its Caution yellow LED or Error red LED indicator is illuminated - be sure to resolve the issue before power-cycling.

Clock install considerations: Transmitter with external antenna

If installing devices after a Transmitter's initial 8 hour power-on, there are three options to ensure a device receives a time update during installation.

  • Install devices between 39 minutes past the hour and 6 minutes after the next hour and devices receive a time update when powered on. For example, between 9:40 AM and 10:05 AM.

  • Install the devices at any time of the day. Devices will receive a time update at the next 39 minutes after the hour.

  • Power-cycle the Transmitter. It will then transmit for 8 consecutive hours and devices receive a time update when powered on.

Clock install: signal search frequency to receive time signal

When a clock is powered on, it automatically initializes its set up and searches for a signal to receive its time.

The scheduled search frequency varies by clock model as defined below.

Analog Clock signal search frequency: at six pre-scheduled times a day, at 2:01 AM/PM, 6:01 AM/PM, and 10:01 AM/PM clock time (not the actual time of the day), a clock's receiver turns on to search for a Transmitter signal to receive a time update, starting with the previously stored channel number. If a signal is not received from the first channel, the clock scans all channels to search for a signal.

Digital Clock/Timer signal search frequency: every 10 minutes on the 5's (5, 15, 25, 35, 45, 55 minutes) of the hour, a clock's receiver turns on to search for a Transmitter signal to receive a time update.

Note

When a clock has not received a valid signal/time update for three consecutive days, it displays a visual signal loss indicator; an analog clock's second-hand advances and pauses continuously (stepping) and a digital clock/timer's colons flash. A clock may display the correct time, but it's not synchronized and its time may drift.

GPS communication (Transmitter time source)

GPS Receiver needs to “see” three satellites in the sky above before it will send a time signal to the Transmitter. If the GPS Receiver has a 360° view of the sky, the process may take only 15 minutes or as many as several hours. The length of time is dependent on the location (if the unit does not have a full view of the sky, due to wall or window installations, building “shadows”, etc.) weather conditions (clear or overcast) time of day, and other similar environmental factors.

If the Transmitter is receiving its time source from the optional NTP configuration, it sends requests to the NTP server at defined intervals.

Note

The Transmitter does not transmit time data until it has received valid time information from a time source. Once the Transmitter receives a time signal, the Transmitter sets its internal clock to the received time. The Transmitter then begins to transmit its internal time once every second. The Transmitter continually monitors its time source connection and updates its internal clock with the time data it receives.

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