In message <[email protected]>, dated Thu, 14 Jun 2007, Bob Richards <[email protected]> writes:
>No response from the first post, so I am reposting. Seems like the more >complicated the question, the more responses we get. This question must >be too simple. :-) For me, the question is not sufficiently clear. > >The GR1089 Conducted Immunity calibration is to be performed in a 50 >ohm fixture, terminated on one side with 50ohms, the other side through >an attenuator (also 50ohm impedance) to a measurement device. The test >limit at 10khz is listed as 89 dBua. The calibration level, measured at >the output of the calibration fixture, should therefore be 123 dBuV ( >add 34 dB to convert from dBuA to dBuV in a 50 ohm system). My >question is this: Is there is a 6 dB adjustment in level to be included >in the measurement? Please explain how you think this 6 dB adjustment should be applied. Do you mean that the test signal level should be increased (or decreased?) by 6 dB compared with the level used for calibration, or do you mean something quite different? -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk There are benefits from being irrational - just ask the square root of 2. John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________
