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UC-840 / UC-840IS: How to add RS-422/485 Termination Resistor?

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How to add RS-422/485 Termination Resistor

4port RS-232/422/485 to USB Converter

To add RS-485 Termination Resistor,

Add a Dip type resistor to D+ & D- as a loop (see below photo).

The resistor value is around 100R~120R depending on transmission distance.

To add RS-422 Termination Resistor,

Add a Dip type resistor to T+ & T- as a loop, and to R+ & R- as a loop (see below photo).

The resistor value is around 100R~120R depending on transmission distance.

 

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