Frequency Measurement


Author Message
Emady
Newbie

Joined: 02/02/2016
Location: United Kingdom
Posts: 16
Posted: 07:07pm 20 Jun 2018      

Hi,

I use a test set by N7ZWY for evaluating motional parameters of crystals, combined with an oscilloscope. It works great but ties the scope up, requires several manual measurements and need to write them down somewhere so it is time consuming.

For a while now I have been thinking of ways to automate this and have the possibility of storing the results on an SD card for later use and this is where the MM fits in.

The procedure involves taking few voltage and frequency readings. Now I am OK with measuring voltages but am struggling to understand how to do frequency measurement with the MM. The manual says that COUNT function does that but is limited to 300kHz. The crystals I measure go up-to 27MHz so not sure how to make the MM measure that. I would prefer to avoid using a pre scaled.

Is this feasible and if so any starting help anyone please?

Kind Regards
Elia Mady
M0ZHN