Maker Pro
Maker Pro

turn your expensive oscilloscope into a $5 clock

J

Joel Koltner

Jan 1, 1970
0
Vladimir Vassilevsky said:
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
 
J

Joel Koltner

Jan 1, 1970
0
HardySpicer said:
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...)
 
R

Rocky

Jan 1, 1970
0
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.... :)
 
M

Mike

Jan 1, 1970
0
Rocky said:
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’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’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.
 
D

David M. Palmer

Jan 1, 1970
0
Don Lancaster said:
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."
 
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