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Title: Communication Systems For Gas Measurement Data
Author: Bob Johnson
Source: 1990 International School of Hydrocarbon Measurement
Year Published: 1990
Abstract: The optimum communication system for SCADA applications generally includes more than one transmission mediuni. Uhen more than one medium is used, you have a hybrid communications system. Microwave, VSATs, leased lines, USATs, radio, and dial telephone lines all have their place in SCADA. Most of these technologies can be used simultaneously on a single network.