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Frequently Asked Questions
Question 20: What is Opto-isolation? What are the benefits of using Opto-isolated converters?
Answer: Opto-isolation uses optical isolators to isolate two serial devices. Optical isolator is a common element used for asynchronous data applications such as RS-232, RS-485 and RS-422 systems. With an optical isolator, only light passes between two serial devices, this is performed with an LED and a photosensitive transistor.
There are many benefits of using opto-isolated converters, most importantly, it protects your RS-232 devices from transient surges, ground loop, and remote lightning effectively. Optical isolation also eliminates ground loop and noise problems because the ground of two connected devices are separated.
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