how to find output Coupling type of crystal oscillator

[satyak]

Hi,

I purchased a crystal oscillator and I want to check it as a component.I want to know how to check the output of a crystal oscillator is whether AC coupled or DC coupled??

Plz clarify my doubt.

thanks in advance
Satya

 

[IanP]

Check the average voltage value of the running oscillator ..
If this value is around “0” it would indicate AC-coupled output, if the value is around ½ Vcc the output would be DC-coupled ..

You can easily do it with an oscilloscope, but it also can be checked out with a simple voltmeter (just attach a dummy load between the output and GND) ..

Rgds,
IanP

 

[satyak]

Thank you very much.

Is it possible to chech this without switching on the oscillator??

regards
Satya

 

[FvM]

- Check the datasheet.
- Use an ohmmeter.
Actually I'm not aware of any standard clock oscillators to utilize AC coupling. What makes you think it could be used with your part?