Re: Using a network analyser for EN61000-3-2 6 testing
In a message dated 9/9/2003 10:29:03 AM Central Daylight Time, don_borow...@selinc.com writes: When I think of a network analyzer, I think of a device that injects a signal into a network, and then receives the signal after processing by the network using a receiver tuned to the original frequency. This type of network analyzer rejects harmonics. I was thinking more s the NA being a source with 3 simultaneous tracking receivers. Not using the source leaves me 3 tracking receivers. Derek.
Re: Using a network analyser for EN61000-3-2 6 testing
I don't know which machine Derek has, but an HP4195 covers 5 Hz - 500 MHz, and it can be used in network analyzer mode, or spectrum analyzer mode. In network mode you can look at amplitude response, or amplitude and phase. If you are just wanting to measure harmonic currents drawn by some non-linear load, you could use the machine as a spectrum analyzer. It has RBW down to 1 Hz, per my recollection. From: drcuthb...@micron.com Reply-To: drcuthb...@micron.com Date: Tue, 9 Sep 2003 07:56:35 -0600 To: don_borow...@selinc.com, emc-p...@ieee.org Subject: RE: Using a network analyser for EN61000-3-2 6 testing Interesting use of a Network Analyzer. If it is a Vector Network Analyzer this might work. Cal it, then do an S21 measurement with Port 1 not connected. Port 2 connects to the DUT and gives the Port 2 amplitude referenced to Port R (equal to the incident signal). Calibrating at 0 dBm could provide a nice reference amplitude. Now the VNA might not have been designed to be as robust as a Spectrum Analyzer. It may not be as good for IP3 and all of that. I suppose one could characterize it with a two-tone signal in the frequency range of interest. An oscilloscope operating in the FFT mode could work if the limited dynamic range is acceptable. I have done this for measuring AC line harmonic currents. Dave Cuthbert Micron Technology -Original Message- From: don_borow...@selinc.com [mailto:don_borow...@selinc.com] Sent: Monday, September 08, 2003 8:44 AM To: emc-p...@ieee.org Subject: Re: Using a network analyser for EN61000-3-2 6 testing When I think of a network analyzer, I think of a device that injects a signal into a network, and then receives the signal after processing by the network using a receiver tuned to the original frequency. This type of network analyzer rejects harmonics. There are some inexpensive network analyzers that use broadband detectors. These detectors receive the total signal coming out of the network, fundamental and harmonics. I know that Agilent Technologies (and probably others) now make network analyzers that can be configured to not only receive the fundamental of the excitation, but can be set to receive harmonics and offset frequencies (for testing mixers). I don't see what the advantage of using a network analyzer would be, unless there is some information to be gained by knowing the phase of the harmonics. Don Borowski Schweitzer Engineering Labs Pullman, WA lfresea...@aol.co m Sent by: To owner-emc-pstc@ma emc-p...@ieee.org jordomo.ieee.org cc Subject 09/07/03 04:10 PM Using a network analyser for EN61000-3-2 6 testing Please respond to lfresea...@aol.co m Hi folks, I was wondering if anyone had looked into using a network analyser for measuring current harmonics? I have an analyser that will go down to 5 Hz, it seems a perfect instrument for this. Thoughts welcome. Thanks, Derek Walton. --- 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: Ron Pickard: emc-p...@hypercom.com Dave Heald: emc_p...@symbol.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc --- 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: Ron Pickard: emc-p...@hypercom.com Dave Heald: emc_p...@symbol.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc 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
RE: Using a network analyser for EN61000-3-2 6 testing
Interesting use of a Network Analyzer. If it is a Vector Network Analyzer this might work. Cal it, then do an S21 measurement with Port 1 not connected. Port 2 connects to the DUT and gives the Port 2 amplitude referenced to Port R (equal to the incident signal). Calibrating at 0 dBm could provide a nice reference amplitude. Now the VNA might not have been designed to be as robust as a Spectrum Analyzer. It may not be as good for IP3 and all of that. I suppose one could characterize it with a two-tone signal in the frequency range of interest. An oscilloscope operating in the FFT mode could work if the limited dynamic range is acceptable. I have done this for measuring AC line harmonic currents. Dave Cuthbert Micron Technology From: don_borow...@selinc.com [mailto:don_borow...@selinc.com] Sent: Monday, September 08, 2003 8:44 AM To: emc-p...@ieee.org Subject: Re: Using a network analyser for EN61000-3-2 6 testing When I think of a network analyzer, I think of a device that injects a signal into a network, and then receives the signal after processing by the network using a receiver tuned to the original frequency. This type of network analyzer rejects harmonics. There are some inexpensive network analyzers that use broadband detectors. These detectors receive the total signal coming out of the network, fundamental and harmonics. I know that Agilent Technologies (and probably others) now make network analyzers that can be configured to not only receive the fundamental of the excitation, but can be set to receive harmonics and offset frequencies (for testing mixers). I don't see what the advantage of using a network analyzer would be, unless there is some information to be gained by knowing the phase of the harmonics. Don Borowski Schweitzer Engineering Labs Pullman, WA lfresea...@aol.co m Sent by: To owner-emc-pstc@ma emc-p...@ieee.org jordomo.ieee.org cc Subject 09/07/03 04:10 PM Using a network analyser for EN61000-3-2 6 testing Please respond to lfresea...@aol.co m Hi folks, I was wondering if anyone had looked into using a network analyser for measuring current harmonics? I have an analyser that will go down to 5 Hz, it seems a perfect instrument for this. Thoughts welcome. Thanks, Derek Walton. 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: Ron Pickard: emc-p...@hypercom.com Dave Heald: emc_p...@symbol.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc 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: Ron Pickard: emc-p...@hypercom.com Dave Heald: emc_p...@symbol.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
Re: Using a network analyser for EN61000-3-2 6 testing
When I think of a network analyzer, I think of a device that injects a signal into a network, and then receives the signal after processing by the network using a receiver tuned to the original frequency. This type of network analyzer rejects harmonics. There are some inexpensive network analyzers that use broadband detectors. These detectors receive the total signal coming out of the network, fundamental and harmonics. I know that Agilent Technologies (and probably others) now make network analyzers that can be configured to not only receive the fundamental of the excitation, but can be set to receive harmonics and offset frequencies (for testing mixers). I don't see what the advantage of using a network analyzer would be, unless there is some information to be gained by knowing the phase of the harmonics. Don Borowski Schweitzer Engineering Labs Pullman, WA lfresea...@aol.co m Sent by: To owner-emc-pstc@ma emc-p...@ieee.org jordomo.ieee.org cc Subject 09/07/03 04:10 PM Using a network analyser for EN61000-3-2 6 testing Please respond to lfresea...@aol.co m Hi folks, I was wondering if anyone had looked into using a network analyser for measuring current harmonics? I have an analyser that will go down to 5 Hz, it seems a perfect instrument for this. Thoughts welcome. Thanks, Derek Walton. 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: Ron Pickard: emc-p...@hypercom.com Dave Heald: emc_p...@symbol.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
Using a network analyser for EN61000-3-2 6 testing
Hi folks, I was wondering if anyone had looked into using a network analyser for measuring current harmonics? I have an analyser that will go down to 5 Hz, it seems a perfect instrument for this. Thoughts welcome. Thanks, Derek Walton.
