Test and Measurement Forum

Logging frequency

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Logging frequency

Postby NickS » Fri Nov 19, 2004 5:50 pm

Hi,
I am currently using the ADC-100 unit, and need to record input frequency (from a sensor which is being triggered at 0-100Hz) against time.
How do I do it???
Regards
NS
NickS
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Postby Sarah » Mon Nov 22, 2004 5:04 pm

Hi

Thank you for your email.

In order to record frequency in Picolog you simply select the Frequency parameter option when setting up the channel.

Hope this helps

Best Regards
Sarah
 

Postby Guest » Mon Nov 22, 2004 6:31 pm

Hi,
Thanks for the reply but I can't find a 'frequency' option- where is it hidden?
Best regards
NS
Guest
 

Postby Sarah » Thu Nov 25, 2004 3:40 pm

Hi

The frequency option should be in a drop down box when setting up the channel - along with AC Volts and DC Volts etc.

Make sure that you are using the latest version of our software - R5.11.06.

Hope this helps

Best Regards
Sarah
 

Postby olde » Mon Apr 18, 2005 7:34 pm

Hi,

i dont want to make a new topic over the same issue, but I'm having the following problem.

The frequency option in the drop down menu will dissapear if sample rate 50ms is selected. With 1s sample rate it is an option. This for real time continous mode.

From fast block in cant find an option for frequency logging.

Sinal frequency
signal 1 800hz-6000, amplitude ~10V
signal 2 2000hz-10 000hz amplitude 5V

I'm using ADC-216 with the latest version of picolog.

Any hints?
olde
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Joined: Mon Apr 18, 2005 7:23 pm

Postby Sarah » Tue Apr 19, 2005 7:59 am

Hi

Thank you for your post.

I believe this function disappears from the software because it cannot measure frequencies when faster than 1s speeds. When looking at frequencies that are too high to be measured with this sampling rate you need to use either Picoscope or a frequency to voltage converter to interface the signal to the logger.

Hope this helps

Best Regards
Sarah
 


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