Time synchronization
Manual correction superfluous
To ensure that devices in a network are synchronized with each other and also use the correct absolute time, they are connected to a central time reference. This so-called Grandmaster Clock normally receives the absolute world time via GPS.
The GPS antenna required for this is connected to the Grandmaster Clock via a coaxial cable. Depending on the length of the cable, signal delays of up to half a microsecond occur. This signal delay previously had to be corrected manually.
In order to minimize deviations between the GPS time and the time within the network, Omicron Lab has now developed a device that combines the GPS antenna and the actual time reference in a compact, waterproof and weatherproof housing. Equipped with an internal antenna, the Grandmaster Clock OTMC 100 can be installed in a suitable location and connected directly to the Ethernet. This eliminates the need to lay a coaxial cable between the GPS antenna and the Grandmaster Clock.
The device uses either the Network Time Protocol (NTP, SNTP) or, for applications with particularly high accuracy requirements, the Precision Time Protocol (PTP) in accordance with the IEEE 1588-2008 standard.
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