[SOLVED] some question about data acquistion DAS

[okman]

hi guys ....
1-why most data acquisition cards contain counters???
but from studying this object, i found there is no needed to counters

2-also why we use frequency analysis to the acquired signal??

 

[barry]

Counters may be used for many functions, e.g. determining time between samples, counting number external events, etc.

Frequency analysis is used so that engineers can have jobs.
(Not sure I understand the question)

 

[okman]

thank u barry

frequency analysis is used to represent frequency component of acquired signal
frequency analysis like FFT , FT, spectra analysis

thank u barry , i asked this question only to make sure of the answer

u can help me if u have any additional answers

thank u again