I had the same problem in my lab. I whipped up a switching matrix using a couple of (used) HP 87606 Test system matrix (terminated) switches. I used a simple lighted push button switch driving a steering diode matrix to set up the switch path. Now one button sets up the path for: 1. Radiated emissions 2 Conducted emissions l1 3. Conducted emissions L2 4. Conducted emissions earth port 5. Current probe input 6. Close field diagnostic probe / "other"
I use a Network Analyzer (or spectrum Analyzer w/ tracking gen) to sweep the entire "path" and use that number in my gain/loss correction. Simple & effective. It was not all that expensive & sure saves time. for what it's worth. Regards, Michael Taylor Colorado -----Original Message----- From: Jim Eichner [mailto:[email protected]] Sent: Wednesday, May 22, 2002 1:55 PM To: [email protected] Subject: RE: Coaxial Switches - use with spectrum analyzer and gear? In our pre-compliance lab, we've got a pair of LISN's, a LISN-mate type thing that I'll call a DMRN (DM rejection network), a transient limiter, some clamp-on RF current probes, an amplifier, the front end of the analyzer, and a 50 ohm terminator. All this gear is connected and unconnected a hundred times a day when we're deep into trouble-shooting, and I'm sick of doing up and undoing coax connectors. I don't trust push-on coax connectors. What I envision is a system with a few of these coax switches in it. The analyzer input would go to a switch that selected either the amp (used only with the clamp-on probes) or the transient limiter (used with the LISN's). The limiter input would go to a switch that selected between the output of the DMRN or the Line LISN or the Neutral LISN. Etc. You get the idea. Is there anything to stop me from using coax switches with suitable CW power, insertion loss, and frequency spec's? Am I headed for trouble if I have 2 or 3 of these switches in the signal path, due to cumulative insertion loss? Thanks for your feedback, Regards, Jim Eichner, P.Eng. Manager, Engineering Services Xantrex Technology Inc. Mobile Power web: www.xantrex.com <http://www.xantrex.com> Any opinions expressed are those of my invisible friend, who really exists. Honest. Confidentiality Notice: This email message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. -----Original Message----- From: [email protected] [mailto:[email protected]] Sent: Tuesday, May 21, 2002 7:45 AM To: [email protected] Subject: Coaxial Switches Other than Adilent, what are some other sources for low power (<1W) and high power (>100W) coaxial switches for frequencies up to 2 GHz? Richard Woods Sensormatic Electronics Tyco International ------------------------------------------- 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: Ron Pickard: [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: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list" ------------------------------------------- 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: Ron Pickard: [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: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
