[SI-LIST] Immunity troubleshooting technique

2001-08-05 Thread Douglas C. Smith
Hi All, Well, its that time of the month when I get an itch to write something. So here goes Troubleshooting intermittent design problems can be a real time and resource burner in the development lab. Sometimes intermittent problems can be caused by lack of system immunity to noise on

Re: ESD - time between successive discharges

2001-08-05 Thread Cortland Richmond
This has come up everywhere I've worked. In order to adequately test for vulnerability, logically, one has to apply a discharge during each of the operating conditions an equipment might take. Given the number of different logical states a microprocessor-controlled EUT might use, this could take

RE: FCC - radiated emission up to 10th harmonic

2001-08-05 Thread Cortland Richmond
If you want to have your grant of authorization -- or your marking -- challenged by a competitor or discovered noncompliant by the FCC, all you need to do is play games with the rules. Conservative observance of reasonable interpretations of the Rules seems prudent to me. Cortland

Re: FCC - radiated emission up to 10th harmonic

2001-08-05 Thread Cortland Richmond
If I use a 6 MHz crystal as reference in my 1296 MHz generator chain I cannot reasonably say that my test must stop at the tenth harmonic of 6 Mhz. I must test to the tenth harmonic of 1296 MHz, and in excess of 10 GHz. Cortland --- This message is from