Quote:
Originally Posted by waialua359
that just went right over my head??
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I appologize if some of my references or terminology was confusing to others. My intent was to respond to Eric's proposed test and to answer a question as to the 'what's inside' question.
Eric suggested that he was going to run some high(er) frequency RF succeptability testing, and I suggested that, based upon my observations, that the problem might be easier to expose by subjecting the device to lower frequency pulsed transients.
EN (EuroNorme) 61000 describes a number of different product compliance tests, and among them is a specific fast transient test where interconnecting cabling is laid in a coupling trough and subjected to this test.
I also stated that a lower frequency AM (Amplitude Modulated) signal can sometimes expose weaknesses with a given product design that a transient test will expose.
As to the FCC (Federal Communications Commission) OET (Office of Engineering and Technology) EA (Equipment Authorization) reference, if you look on the back of any unlicensed device which intentionally generates RF (Radio Frequency) emissions, you should find a manufactuer and product code identifier. With that identifier, you can look up information regarding that specific device, on the FCC's website, as that information becomes part of a public file. The direct link to this information was provided earlier in this rather lengthly thread, so I didn't see the need to re-post it.
I think it is unfair to IFI that we publicly speculate as to what the root cause of this problem is, or is not, without factual information in hand. However, as someone experienced with product design, including RF design, I will state that I do not believe that "cell phones" are the problem here. As I indicated in my response, our build location is not located near any RF sources (i.e. transmitters), let alone any that would be synchronized in time with the actuation of the motors.
Ultimately, whatever the cause of the problem affecting a few of us may be, the responsibility to resolve it lies upon the manufactuer and or FIRST to work out a solution. Those among us, such as Eric, with equipment to perform testing that IFI may not otherwise be able to accomplish on their own, may be able to provide some additional data to IFI that would help them.
I hope that helps,