Is there an acceptable method in any immunity standards, or the tolerance specified anywhere for checking the modulation? You need to come up with an uncertainty number if you are performing a compliance test. It should be pretty painful if you are not a ISO 17025 calibration laboratory.
OOO (Own opinions only) Best regards, Deniz Demirci National Technical Systems (NTS Canada) Phone: 403-568-6605 ext 244 fax: 403-568-6970 email:[email protected] web: http://www.ntscorp.com/about/locations From: [email protected] [mailto:[email protected]] On Behalf Of Ken Javor Sent: Tuesday, August 10, 2010 9:39 AM To: Untitled Subject: Re: Calibration supplier for signal generator with pulse modulation Amplitude and pulse modulation parameters are adequately checked with a calibrated o'scope. And even frequency could be checked with your EMI receiver, assuming it is calibrated. Ken Javor Phone: (256) 650-5261 > From: Deniz Demirci <[email protected]> > Date: Tue, 10 Aug 2010 08:30:17 -0700 > To: Untitled <[email protected]> > Conversation: Calibration supplier for signal generator with pulse modulation > Subject: RE: Calibration supplier for signal generator with pulse modulation > > The amplitude of signal source may not need calibration because you calibrate > the field at the end with calibrated probes. > You should at least check or get the signal generator calibrated if your > verification procedure is not checking (characterizing) the modulation. > EN 61000-4-3 gives some hints about amplitude modulation but the other > modulation types can be difficult to measure (Pulse, burst, phase etc.) > > OOO (Own opinions only) > > Best regards, > > Deniz Demirci > National Technical Systems (NTS Canada) > Phone: 403-568-6605 ext 244 > fax: 403-568-6970 > email:[email protected] > web: http://www.ntscorp.com/about/locations > > -----Original Message----- > From: [email protected] [mailto:[email protected]] On Behalf Of Ken Javor > Sent: Tuesday, August 10, 2010 7:05 AM > To: Wendy Nya; Untitled > Subject: Re: Calibration supplier for signal generator with pulse modulation > > Why would the signal source need calibration? Normally, it is the signal > measurement devices that require calibration. Further, this signal source > likely requires some amplification in order to provide the required signal > for EMI testing, so that it is the amplified output which must be measured, > not the signal generator itself. > > Ken Javor > > Phone: (256) 650-5261 > > >> From: Wendy Nya <[email protected]> >> Date: Tue, 10 Aug 2010 01:23:29 -0700 (PDT) >> To: <[email protected]> >> Subject: Calibration supplier for signal generator with pulse modulation >> >> Dear All, >> >> I am looking for a calibration supplier that can provide accredited service >> for >> AR SG6000. It has built-in pulse modulation option (for Radiated Immunity >> use). >> >> By the way - Is anyone using this model? It seems to be OEM from Agilent (it >> came in an agilent box) but the equipment is marked AR >> and works with Agilent N5181A driver. Agilent is saying that it is not able >> to >> provide accredited calibration service for this model. >> >> Thanks & Regards, >> Wendy Nya >> >> >> >> >> - >> ---------------------------------------------------------------- >> This message is from the IEEE Product Safety Engineering Society emc-pstc >> discussion list. To post a message to the list, send your e-mail to >> <[email protected]> >> >> All emc-pstc postings are archived and searchable on the web at: >> http://www.ieeecommunities.org/emc-pstc >> Graphics (in well-used formats), large files, etc. can be posted to that URL. >> >> Website: http://www.ieee-pses.org/ >> 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]> > > - > ---------------------------------------------------------------- > This message is from the IEEE Product Safety Engineering Society emc-pstc > discussion list. To post a message to the list, send your e-mail to > <[email protected]> > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieeecommunities.org/emc-pstc > Graphics (in well-used formats), large files, etc. can be posted to that URL. > > Website: http://www.ieee-pses.org/ > 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]> > > - > ---------------------------------------------------------------- > This message is from the IEEE Product Safety Engineering Society emc-pstc > discussion list. To post a message to the list, send your e-mail to > <[email protected]> > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieeecommunities.org/emc-pstc > Graphics (in well-used formats), large files, etc. can be posted to that URL. > > Website: http://www.ieee-pses.org/ > 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]> - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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]> - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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]>
