Transformer Coupling
Transformer Coupling utilizes a bus coupler that contains an
isolation transformer and isolation resistors. Transformer
Coupling extends the stub length to 20 feet and provides electrical
isolation, better impedance matching and higher noise rejection
characteristics than Direct Coupling. The electrical isolation
prevents a terminal fault or stub impedance mismatch from
affecting bus performance.
Connecting to the bus using Transformer Coupling requires a Coupler for each
subsystem/terminal device and proper termination on the bus.
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