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| Main Page > RGB Technology Outdoor Clocks > ZA5-L PoE+ 4 Digit Outdoor Wall Clock | |||||||||||||||||||||||||||||||||||
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| RGB ZA5-L PoE+ 4 Digit Outdoor Wall Clock | |||||||||||||||||||||||||||||||||||
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General Feature
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SETTINGS MANAGEMENT Every LAN device has a built-in WEB PANEL, which is available through the computer network in the Internet browser. The management through the WEB PANEL may be carried out using a computer, a tablet, a smartphone or another device providing the Internet browser.
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| TIME SYNCHRONIZATION, CLOCKS SYSTEMS | |||||||||||||||||||||||||||||||||||
Time in the clocks can be set manually by the user or using the function of automatic time synchronisation – available in two options: |
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| 1. GPS Time Synchronisation | |||||||||||||||||||||||||||||||||||
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Although the GPS has been created for positioning (i.e. defining the location), it can be also used for other purposes. In the received GPS signal there is embedded information about the current time and date. This time is very accurate, because it is determined on the basis of atomic standards. It may be slow or fast by just one millionth of a second per month. For the proper operation, it is required to place the receiver in the location providing the "visibility" of the sky. Advantages of the GPS synchronisation: - provides precise time synchronisation from the GPS satellites, - does not require any configuration, - does not require any connection to the Internet, - operates in every location on the Earth, - the LED signalling proper signal reception is embedded in the receiver. To take advantage of the satellite time synchronisation, you should equip the clock with the optional GPS Receiver. |
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| 2. NTP time server client | |||||||||||||||||||||||||||||||||||
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NTP (Network Time Protocol) – is a communication protocol supporting precise, stable and safe synchronisation of clocks with any time server through the computer network. A great advantage of this solution is possibility of simultaneous synchronisation of a large number of devices. The synchronisation may be executed: - from your own local time server – the Internet access is not required - from a public remote time server – the Internet access is required Every clock can be configured as a local NTP time server – as described below. The advantages of the NTP synchronisation: - provides precise time synchronisation with the NTP servers - possibility of simultaneous synchronisation of many clocks from the same server - operation of five different time servers (1 primary and 4 alternative) provides reliable synchronisation - changing the time server from the primary to an alternative one is carried out automatically when a failure is detected. The NTP time synchronisation is carried out via the Ethernet (the interface is included in the standard equipment of every clock). |
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| Function of the local NTP time server | |||||||||||||||||||||||||||||||||||
Every clock of ZA/ZB series may be a central clock (MASTER) which, in the LAN, will provide the time source for other clocks (Slave). In consequence, it is easy to create a clock system in which the central clock can receive time from different sources, such as: a GPS receiver, a public NTP server or its own internal clock. Providing synchronised time to all clocks guarantees that everybody uses the same time source. It is extremely important for workplaces, production halls, schools, stations, platforms, etc. |
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| Applications |
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| - inside buildings: production halls, receptions, swimming pools, workplaces, halls, corridors, waiting rooms, schools - outside: over building entrances (as an element of the facade raising the prestige), open sports facilities - stations, platforms, airports, passenger information, logistics centres - inside public transport vehicles - in pylons, welcome signs and advertising totems |
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| Product Specification | |||||||||||||||||||||||||||||||||||
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