RE: [Vo]: Speed of light confirmed

2007-02-09 Thread Keith Nagel
Hi Stephen, >Yeah, I'll probably fiddle around some more with this, just because it >seems like the "pre-ring" is going the wrong way and I'd like to >understand why. That's good. While the scope precludes you from doing any interesting shock wave experiments ( way too slow ) you can certainly

Re: [Vo]: Speed of light confirmed

2007-02-08 Thread Stephen A. Lawrence
Keith Nagel wrote: Hi Stephen, it looks like it has something to do with the signal itself, almost like the "pre-ringing" of a perfect low-pass filter Given that your cutoff frequency is 60MHz, the leading edge of the signals you are seeing probably bear little relationship to the actual s

RE: [Vo]: Speed of light confirmed

2007-02-08 Thread Keith Nagel
Hi Stephen, >it looks like it has something to >do with the signal itself, almost like the "pre-ringing" of a perfect >low-pass filter Given that your cutoff frequency is 60MHz, the leading edge of the signals you are seeing probably bear little relationship to the actual state of the signal. I

Re: [Vo]: Speed of light confirmed

2007-02-08 Thread Stephen A. Lawrence
so the probe's ground clip would "float". K. -Original Message- From: Stephen A. Lawrence [mailto:[EMAIL PROTECTED] Sent: Wednesday, February 07, 2007 9:40 PM To: Vortex Subject: [Vo]: Speed of light confirmed OK, I admit it, this is pretty boring. But you folks

RE: [Vo]: Speed of light confirmed

2007-02-08 Thread Keith Nagel
about that negative going structure that is appearing between 0 and 15ns on the received channel. Any thoughts about that? K. -Original Message- From: Stephen A. Lawrence [mailto:[EMAIL PROTECTED] Sent: Wednesday, February 07, 2007 9:40 PM To: Vortex Subject: [Vo]: Speed of light con

[Vo]: Speed of light confirmed

2007-02-07 Thread Stephen A. Lawrence
OK, I admit it, this is pretty boring. But you folks are the only people I can think of who might possibly respond to this with something other than a glazed look and the question, "You did what? Uh ... why?" The answer, of course, is "just cause I wanted to see for myself". Basement measure