I read in !emc-pstc that [email protected] wrote (in <[email protected]>) about 'LISN Calibration', on Wed, 28 Nov 2001: >I realize that since we are only performing pre-compliance measurements >that calibration of the LISN is not required. However, do you recommend >calibrating the LISN for pre-compliance measurements? If so, why?
Well, you certainly need to know that it is working and not giving you results that are 10 dB or more in error! The procedure in F.8 of CISPR16-1 is much better that was originally proposed, which I complained loudly was incomprehensible, but it is still rather more complicated than necessary. You don't need a network analyser: a signal generator and a spectrum analyser or calibrated receiver will do quite well. Is this a purchased LISN or did you make your own? The constructional details in CISPR16-1 are also vastly over-complicated - that huge inductor is just crazy unless you really need it to carry 25 A. I made one that will carry 10A without overheating for quite long enough to do a test, and compares in performance quite well with a purchased product. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk After swimming across the Hellespont, I felt like a Hero. ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: [email protected] Dave Heald [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server.
