personally, I use a communications service monitor. Tune in the
frequency of the crystal and read the freq or the error between the
crystal and the monitor freq depending on the type of service monitor in
use.  I have a IFR COM120B so it reads out exact freq received from the
crystal and the error between the setting on the monitor and the actual
freq received from the crystal

No connection to the crystal so no loading to shift the freq as with a
freq counter or scope attached to the oscillator under test.

A real sensitive freq counter with a pick up look could do the same
thing.

Just remember, the accuracy of your reading is only as accurate as the
equipment used to read the crystal freq.
john chung wrote:
>
> Hi there,
>
>      Does anyone knows how to measure the frequency of a crystal. What kind of test equipment must I use(multimeter)?
>
> Thanks
> John Chung
>
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