guys. Thanks a lot. I learned a lot in this forums.

However, we all know that a television set has a micro controller.
My question is is it safe to check the oscillator beside the microcontroller with a frequency counter?

What i meant is that when I check the crystal oscillator using a frequency counter will it not damage the micro controller?

Thanks!!! :wink:

 

No, it won't damage it, but you may need to use a x10 probe, as the capacitive load may stop the oscillator.

But generally, it's not usual to use a frequency counter on a clock crystal, a scope (again with x10 probe) is more practical.

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However, if one was to tweak the frequency a clock crystal in a time piece then an oscilloscope is not as precise a a good frequency counter.

Klaus

 

Certainly so, but it's a rare thing to do, and the application of the counter to the crystal (as in this thread) would change it too much anyway, you generally do that after an existing buffer.

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