On Wednesday, December 14, 2011 12:18:32 PM Mark Wendt did opine: > On 12/14/2011 11:58 AM, gene heskett wrote: > > On Wednesday, December 14, 2011 11:47:19 AM Mark Wendt did opine: > >> On 12/14/2011 11:10 AM, gene heskett wrote: > >>> That's great news Peter, but what does a fully stuffed 7623 weigh? > >>> My Hitachi, which of course is not a storage type, weighs maybe 10 > >>> pounds, goes anywhere. Probes won't reach? Stick an upside down 5 > >>> gallon paint bucket under it. :) > >> > >> That's why the good Lord allowed Tek to invent scope carts. And 9' > >> long probe leads. ;-) > > > > Scope carts are ok but we haven't used the one we have in 15 years, > > too big to get between the rows of racks. > > > > 9' leads? Those are transmission lines and there is no way to make > > them flat and high impedance w/o echos. You have to mentally > > subtract the echo's because they aren't terminated with the cables > > actual impedance. Even 30"ers can do that to you at the frequencies I > > play with. A 9 footer would have to have active electronics (power > > hungry and hot) in the hand piece to drive the low impedance cable, > > and probably a cable terminator hidden in the connector at the scope > > end of the cable. Last time I looked at active probes they weren't > > too far from a 4 digit asking price. Now, check ebay& expect to fix > > it. > > All depends on the kind of lead you're looking for. Your typical > passive probe isn't dealing with that kind of stuff. Not sure if this > would work in the situation you're talking about but here's a Tek 1.5 > GHz active probe that's currently set at $115: #380392358070. > > Mark > Not shabby at all. Does it work? They tend to be pretty fragile electrically.
Cheers, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) My web page: <http://coyoteden.dyndns-free.com:85/gene> Beer -- it's not just for breakfast anymore. ------------------------------------------------------------------------------ Cloud Computing - Latest Buzzword or a Glimpse of the Future? This paper surveys cloud computing today: What are the benefits? Why are businesses embracing it? What are its payoffs and pitfalls? http://www.accelacomm.com/jaw/sdnl/114/51425149/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
