Could you help me interpret a product requirement?

K

kristianjohnsen

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Mar 13, 2011
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Lillehammer, Norway
www.partyfabrikken.no
We have a client that owns some "industrial MP3 players".

Think about it as a unit with screw-on terminals and no buttons, displays, etc. It plays back 18 MP3 samples and can only be controlled by various contact closures.

One line in the manual has made the client a little jumpy:

"The line out must only be connected to amplifiers with built-in ESD protection".

I would thing any quality product would have reasonable ESD protection on both inputs and outputs, but being that this is an incomplete product of sorts, who knows what it might put out.

What would you recommend?

Any easy DIY steps to be taken to feel extra certain nothing gets damaged?

Best regards and thanks in advance,

Kristian Johnsen
 
Re: Could you help me interpret a product requirement?

Firstly, I wouldn't worry about it. Just hook up the audio and let it play. If you must cover yourself for warranty or whatever, wire a couple 5 volt zener diodes back to back across the output/input.
 
Re: Could you help me interpret a product requirement?

That is an odd requirement, since products do not generate ESD, this sounds like they do not protect so need to be connected to a product that protects. Sounds like a CYA exercise in case they fail.

You can roll your own with two modest voltage zener diodes in series, across the I/O to ground. While I would be more careful about static while handling the product before it is installed than worry about it getting hit by lightning after.

JR
 


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