One can also use a pair of probes known to be well balanced and take the difference between the A and B channels, or use a differential input accessory or plugin. There is then no possibility of high-voltage on the instrument chassis.
Cortland (my own thoughts, and nor those of my employer) Rich Nute wrote: > There are two ways to minimize the effect of the common > side of the scope from affecting the waveform: > > 1) If you are using a mains-operated scope, supply > the SMPS from an isolating transformer where > both supply conductors are isolated from ground. > In this way, you can connect the scope common > lead to any point in the SMPS with minimum effect > on the waveform. > > 2) Use a battery-operated scope such as the Fluke > Scopemeter. You can connect the scope common to > any point in the SMPS with minimum effect on the > wavefrom ------------------------------------------- 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.
