ICD400A Quick Start Guide In Figure 6-2, the converter is set up to use internal bias and no termination with four wires.
the impedance of the transmission line being used.
Termination increases load on the drivers, requires installation complexity, changes biasing requirements, and makes system modification more difficult.
Generally, termination should only be used for long distances.
“If in doubt, leave it out.
” ICD400A Isolated RS-232 to RS-422/485 Converter BLACK BOX ® This rugged panel-mount BLACK B converter offers 2 kV isolation.
Withstands temperature variations from -40 to +176° F (-40 to +80° C).
RS-485 4-wire DIP switch.
Figure 6-2.
RS-485 4-wire example.
NOTE:  Shaded blac...

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