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ADAM-5560 Series User Manual 170
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This is a combination of daisychain and hierarchical structure.
Figure A.3 Random structure
A.3 Line Termination
Each discontinuity in impedance causes reflections and distortion. When a imped-
ance discontinuity occurs in the transmission line the immediate effect is signal
reflection. This will lead to signal distortion. Specially at line ends this mismatch
causes problems. To eliminate this discontinuity, terminate the line with a resistor.
Figure A.4 Signal Distortion
The value of the resistor should be a close as possible to the charac- teristic imped-
ance of the line. Although receiver devices add some resistance to the whole of the
transmission line, normally it is sufficient to the resistor impedance should equal the
characteristic impedance of the line.