Hi all I got a question about the magnetic measurement per CISPR 15, it says that the sensitivity of the current probe is 1V/A.
My interpretation is that X dBuV measurement you got from the EMI receiver, corresponding to XdBuA, which is then compared to the limit, say 88dBuA at 50 kHz for 2-m 3-loop system. The manual I have says the same thing. Is it correct? My question is 1) Do we need to covert the voltage to current taking consideration of the 50 Ohm impedance of the receiver? If that is the case, we need to minus 34 dB from my voltage measurement to get the current measurement . 2) In what ways the whole system has considered the impedance variation of the current probe impedance. I have checked the impedance of the current probe, the impedance is ranging from 40+ Ohm at 10kHz to 150+ Ohm at around 150K and decreases to around 75 Ohm at 1 MHZ. Thank you KC Chan ------------------------------------------- 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: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: pstc_ad...@garretson.org Dave Heald davehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org 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.
