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by Johnythree 1911 days ago
A well designed product will have good shielding and PCB design, and effective low-pass-filters, all of which keep the stray interference within the enclosure. It should not rely on the cable to meet EMC testing, and the test protocol should define a suitable generic cable.

If it does require a particular cable, then the cable should not be removable.
1 comments
bradfa 1911 days ago
In an ideal world, I agree with you. But if you ever try to make a mass market USB device you will quickly learn that the computers which your customers will connect your device to and the cables which your customers will use will greatly vary in terms of quality and compliance to the specs.
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Johnythree 1910 days ago
If we had appropriate EMC standards, then this wouldn't be an issue.

Shonky manufactures wouldn't be able to gain advantage by cutting corners.

The standard EMC tests should be specified using generic cables, connectors, etc.

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