turn your expensive oscilloscope into a $5 clock

"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&#4294967295;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&#4294967295;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)