Good image.
So, if I read that right it is a pulse about 1 uS wide and goes from
base of zero volts to about 5.8 V.
Curious why the high level is over 5 V? Is your 5 V supply to the
Rubidium unit up there?
On 2/3/2012 8:52 PM, Bob Bownes wrote:
Just for completeness sake, here is a
The probe compensation could be off.
What type of vertical plug-in was used? The Tektronix 11000 series of
oscilloscopes scare me.
On Sat, 04 Feb 2012 00:36:13 -0800, Rex r...@sonic.net wrote:
Good image.
So, if I read that right it is a pulse about 1 uS wide and goes from
base of zero volts
Just for completeness sake, here is a screen capture off of my DSA-602 of
the 1pps. Note that the trace starts 500ns _before_ the 1pps triggers the
capture. Ah the wonders of digital sampling.
http://www.fastbobs.com/pictures/1pps.jpg
Also as a pdf
http://www.fastbobs.com/pictures/1pps.pdf
I managed to take a photo at the scope screen showing the 1 pps pulse
from an old FE-5680A (the one that does not need the 5V and does not
output the oscillator signal - just the 1pps).
Exposure was 30 sec, F9. The signal was barely visible with naked eye,
and some jittering is present. The room
and here's another photo of the pulse from one of the newer breed of
FE-5680A that require the 5V.
Taken with a Sony Cybershot H5, 8 sec exposure, 'scope is an elderly Tektronix
2252
http://dl.dropbox.com/u/1690159/1PPS_1%20FE-5680E.jpg
John H.
On 2 Feb 2012, at 15:50, Alberto di
Odd. Did Tektronix mark it Fluke PM3082? :)
It is nice to know that the current generation of digital cameras can
be used for this application. It is too bad that the image has so
much noise.
On Thu, 2 Feb 2012 16:27:03 +, John Howell j...@howell61.f9.co.uk
wrote:
and here's
Not odd but my mistake, I took a picture on both 'scopes and the Fluke gave
marginally better results, the text referred to the wrong one. Sorry for the
confusion.
On 2 Feb 2012, at 16:43, David wrote:
Odd. Did Tektronix mark it Fluke PM3082? :)
It is nice to know that the current