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I'm designing an instrumentation box with opto-coupled digital inputs (BNC). For better noise/ground loops immunity/signal reflections I added 50 ohm resistors and 1n filtering capacitor (if needed). I can also make GND1 floating or earth grounded, using a jumper(not shown) if I run into problems in practice. Input signal switching is <10kHz

What is your opinion?

scrible

JYelton
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Mr No
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  • opinion based questions are off topic here ... please ask a question relating to electronics design – jsotola May 12 '22 at 23:32
  • It's better to have specs on performance than a rough idea. Can you imagine everything that can interfere with your expectations? If not , then you aren't ready. – Tony Stewart EE75 May 13 '22 at 01:23

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