you can use octoBox for pre-compliance EMC but you would need to rely on relative measurements (e.g. i need to get this spur down by 10 dB) rather than absolute (e.g. matching a certification lab level)
@FANNY: Thank you very much. Now, all those test Boxes to isolate testing is only for Performance. Do you use similar boxes for pre-compliance EMC? Cables are a big problem when they are passed through the chamber. They need to have the proper filter to isolate DATA (labtop running scrips and colection) and The actual TEST (investigation)
very interesting stuff. certainly a lot to consider for the future. Hopefully some other groups may create some standard testing and we can utilize the results relaiably without having to perform some of this testing on our own.
Yes, we put one device in a walk-in screen room in order to isolate the two devices. We ended up having trouble in overnight testing because we performed open-air testing at night with the transmitters on the roof. The signal from the roof-top transmitters was interfering with theovernight lab testing. We needed to add local isolation for the device outside the screen room.
On page 13, I would expect that the MPE frequency response for the 5 GHz band to be more complicated than the response for the 2.4 GHz band. This depends on the multipath conditions being the same for both bands. Is my intuition correct?
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Wal-Mart will hold its second Made in the USA Open Call July 7-8, at its headquarters in Bentonville, Ark. The event will be a repeat effort by the world’s biggest seller of consumer goods to increase the amount of US-made products it sells in Wal-Mart stores, in Sam’s Club members-only wholesale outlets, and on walmart.com.
From design feasibility, to development, to production, having the right information to make good decisions can ultimately keep a product from failing validation. The key is highly focused information that doesn’t come from conventional, statistics-based tests but from accelerated stress testing.
There’s a good chance that a few of the things mentioned here won't fully come to fruition in 2015 but rather much later down the line. However, as Malcolm X once said, "The future belongs to those who prepare for it today."
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.