Specifications

Chapter 4 - Transient Protection of RS-422 and RS-485 Systems RS-422 And RS-485 Applications Ebook
Page 54 of 137 Manual Documentation Number: <DocNumber>
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There are two approaches to creating this idyllic ground state. The first
approach is to isolate the data ground from the host device ground,
this is typically done with transformers or optical isolators.
Figure 38: An Optically Isolated RS-485 Device