A Transmitter obtains UTC time from a NTP Server during each check-in, and then transmits (broadcasts) its received UTC time and Legacy Time Zone to 72MHz Analog Clocks, Digital Clocks, and Digital Timers. InfoBoards/MiniBoard receive UTC time from a Transmitter and then synchronize received UTC time to their assigned Time Zone and apply DST rules.
By default, a Transmitter's NTP Servers are set to Default. When set to Default, it connects to the NTP Servers set in the account profile. When required, a Transmitter can be set to receive time from specific NTP Servers.
Go to Devices > Transmitters.
From the list, select the Transmitter Gateway ID link. Its gateway profile is displayed.
Select Show Advanced Options.
From the NTP Servers 1 through 3, enter the domain name for each NTP Server.
Primex recommends to set the NTP Servers to your organization's designated NTP Servers and set all NTP servers to ensure a reasonable level of accuracy can be maintained.
Use of external NTP Servers requires that port 123 is open to UDP traffic to allow the Primex Ethernet or Wi-Fi network devices to connect to an external server.
When a setting update is made to a device, its Update Pending status is set to Yes. During its next check-in, all pending setting updates are downloaded to the device. Once downloaded, its Update Pending status is set to No.