Forums

turn your expensive oscilloscope into a $5 clock

Started by BrunoG November 2, 2007
"Vladimir Vassilevsky" <antispam_bogus@hotmail.com> wrote in message 
news:B3pXi.41164$eY.1274@newssvr13.news.prodigy.net...
> There is one thing that I didn't understand: are you guys have terribly > nothing to do?
Be kind, Vladimir. Someone who turns a 'scope into a clock (rather than just a buch of 7-segment LEDs or an LCD or similar) definitely demonstrate a fair amount of initiative and creativity; that's definitely worth something! I took an AI class in college where we had a group assignment to present/explain to the rest of the class some particular problem solving/learning algorithm (I don't even remember what it was anymore...). Besides presenting/explaining it, we'd taken a bit of extra time to go and implement a Tic Tac Toe game using that algorithm -- got us a fair amount of extra credit and kudos with the prof. ---Joel
"HardySpicer" <gyansorova@gmail.com> wrote in message 
news:1194225262.821402.175060@z24g2000prh.googlegroups.com...
> Can you go the other way and turn a $5 clock into a scope!
No, although we might be able to turn a $5 garage sale TV set into a scope :-) (Not a very *good* scope, mind you...)
On Nov 5, 7:54 pm, "Joel Koltner" <JKolstad71HatesS...@yahoo.com>
wrote:
> "HardySpicer" <gyansor...@gmail.com> wrote in message > > news:1194225262.821402.175060@z24g2000prh.googlegroups.com... > > > Can you go the other way and turn a $5 clock into a scope! > > No, although we might be able to turn a $5 garage sale TV set into a scope :-) > (Not a very *good* scope, mind you...)
Isn't that how they make multi-channel, multi-gigahertz digital sampling scopes? (More or less) Some high-speed ADCs, a bit of logic and a display.... :)
Rocky wrote:
> On Nov 5, 7:54 pm, "Joel Koltner" <JKolstad71HatesS...@yahoo.com> > wrote: >> "HardySpicer" <gyansor...@gmail.com> wrote in message >> >> news:1194225262.821402.175060@z24g2000prh.googlegroups.com... >> >>> Can you go the other way and turn a $5 clock into a scope! >> No, although we might be able to turn a $5 garage sale TV set into a scope :-) >> (Not a very *good* scope, mind you...) > > Isn't that how they make multi-channel, multi-gigahertz digital > sampling scopes? (More or less) > Some high-speed ADCs, a bit of logic and a display.... :) >
That&#2013266066;s exactly how they do it. Start with four DC to 20GHz preamps, split the output of each preamp to four 12.5GS/s ADCs each with a phase shifted clock and connect each ADC to a demultiplexer driving wide slower memory. While you are at it, take a split off your preamps and send it to your trigger comparator chip. (When you&#2013266066;re at Radio Shack, be sure to ask for the premium trigger chip). Now you just have to read back the acquisition memory, convert it to a raster image and send it to your $5 garage sale TV. Voila, you have a 20GHz, 50GS/s digital scope.
BrunoG wrote:

> Hi, > > Here is my suggestion to turn your oscilloscope into a clock with a PIC a 4 > resistors : > http://www.micro-examples.com/public/microex-navig/doc/082-pic-oscillo-clock > > I'm opened to your destructive comments :)
Bruno, this is cool. 5 bucks is a deal. If the freight is not too expensive, I'm going to order one. Rene -- Ing.Buero R.Tschaggelar - http://www.ibrtses.com & commercial newsgroups - http://www.talkto.net
In article <5p43seFpef83U1@mid.individual.net>, Don Lancaster
<don@tinaja.com> wrote:

> John Larkin wrote: > > On Fri, 2 Nov 2007 16:07:58 +0100, "BrunoG" > > <noreply@micro-examples.com> wrote: > > > > > >>Hi, > >> > >>Here is my suggestion to turn your oscilloscope into a clock with a PIC a 4 > >>resistors : > >>http://www.micro-examples.com/public/microex-navig/doc/082-pic-oscillo-clock > >> > >>I'm opened to your destructive comments :) > >> > >>Bruno > >> > > > > > > Our expensive scopes already have time-of-day clocks. > > > > John > > > Can't you just tie a long rope on the oscilloscope and make a pendulum > out of it?
Or knock on the door of the building supervisor and say "I will give you this expensive oscilloscope if you tell me what time it is." -- David M. Palmer dmpalmer@email.com (formerly @clark.net, @ematic.com)