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Old 15th March 2011, 09:31 PM   #1
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Default grounding spdif input with Buffalo II

I am building a Buffalo II / IVY III setup and plan to use a BNC connector for SPDIF input to the DAC. Should the body of the BNC connector be isolated from my bare-metal back panel (i.e., from chassis ground potential) with shoulder washers or some similar insulator, or can I just screw the BNC directly onto the bare chassis? I usually use a star grounding scheme and isolate all inputs and outputs from the chassis in my analogue construction projects, but I don't know if digital circuitry has different ground rules (pun intended) for best performance. Please advise.

These are mighty fine looking boards and I can't wait to get this rig running.
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Old 16th March 2011, 01:51 AM   #2
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Isolate the body of the BNC connector from the chassis.
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Old 17th March 2011, 04:27 AM   #3
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Thanks for the advice, ihear21khz. I'll bore a bigger hole in the back panel and use some nylon shoulder washers to mount the BNC connector.
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Old 18th March 2011, 07:11 PM   #4
avr300 is offline avr300  Denmark
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Or use one like this:

Neutrik - Video - BNC Sockets - NBB75DFIB-P

It's isolated.
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Old 21st March 2011, 10:50 PM   #5
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Thank you, avr300; that looks like a good alternative. I know Neutrik makes high quality stuff.
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