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Altera_Forum's avatar
Altera_Forum
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15 years ago

LVDS cycloneII to 10 bit counter

In cycloneII manual i read the max freq input LVDS pin is >800MHz. IF i have a 750 MHZ signal as input, and i send it to LVDS input (cycloneII), can i divide this freq with a 10-bits counter? ...
Altera_Forum's avatar
Altera_Forum
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15 years ago

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do you think that we can use more repetitions of pulses to improve the measure??

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If each measurement is a random variable, then averaging can improve your estimate of the mean. However, its up to you to determine what the statistics of the measurement are. I would recommend first implementing a design where you can capture the timing of every single pulse. Transfer that data to a PC where you can analyze it in say MATLAB. Plot a histogram of the data for a fixed pulse setting. However, even this setup may not be realistic, since you have not described in detail what is generating the pulses for you to measure.

Create a simulated signal source that is representative of the signals you wish to measure. Then perform averaging to see if you obtain a more accurate measurement.

Since you have not described how accurate your measurement must be, and over what timescale, there's little we can comment on.

Cheers,

Dave