GPS standard time receivers can be used as long as they deliver the time signal in DCF77 format with a 24 VDC potential.
A group of lower orbiting GPS satellites (Global Positioning System) send radio signals from which entensive time information can be derived. Their orbits are distributed evenly so that every point on earth is covered by at least 3 different satellites. The GPS signal can be received across the whole world. The absolute time precision achieved by the GPS signal is considerably higher than that reached by the DCF receiver.
GPS satellites sends UTC time (Universal Time Coordinated) which corresponds to GMT (Greenwich Mean Time). Seconds and years transitions are taken into account.
Calendar and day data is diverted from the GPS signal and transferred to the 140 ERT 854 10 module.
The antenne must be ordered separately from the GPS receiver. More details are contained in the technical data section of your reciever.
When selecting a location for erecting an antenne, the following sources of interference should be taken into account which could disturb or destroy signal reception through their GPS receivers:
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electromagnetically contaminated areas: Avoid areas with potential sources of interference, such as strong transmitters, switching stations and airports.
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limited to the sky and the horizon: The antenne must be erected outside to ensure disturbance operation. Enclosed spaces or operating cabinets impedes satellite reception.
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Length of the antenne cable: Do not exceed the maximum permitted length of the antenne cable
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Atmospheric conditions: Heavy snowfall and rain can impede your GPS receiver or even prevent any signal reception.
