HydroLynx Satellite Data Concentrator is an intelligent multi-path repeater that performs the same role as a terrestrial ALERT radio repeater while providing an alternate data path via satellite radio transmission. The satellite radio transmits data through ORBCOMM, a real-time commercial satellite telemetry provider.
As an intelligent repeater, the 5400-SDC decides to repeat data reports based on three criteria: 1) the report is a valid message, 2) the ID number is in the programmable Repeat Range list, and 3) the same report is NOT in the Talk Back Buffer. Data reports that meet the repeat criteria are buffered for immediate transmission through the terrestrial ALERT radio. Buffered data reports are transmitted through the satellite radio on 10 minute intervals.
The Model 5400-SDC Satellite Data Concentrator includes a Model 50386PCB and ALERT modem to decode ALERT data reports, a terrestrial VHF or UHF radio transceiver to receive and transmit data, and a 5400 satellite radio to transmit the data.
The ScadaLynx Toolbox software package is used to configure all of the 50386 programmable parameters. This includes which ALERT data report station ID numbers are buffered and transmitted through the terrestrial ALERT or satellite radio. Each radio has its own repeat list. Individual and blocks of ID numbers can be selected for transmission. Up to 24 station ID numbers can be transmitted through the satellite radio along with the local battery voltage.