Hi all, I have to design a data acquisition system for two different signals. One is within the frequency range 300 hz (+ or - 25 Hz) and the other one is less than 5 Hz. I do not know the amplitude ranges of these frequencies(I guess it may depend on the sensors used). I do not know how to select the sensors and how to design the other hardware. If you can either give a pointer to me or if you could tell me what are the dos and dont's and the important things to consider while designing. Can I design a single daq card that can capture the 300Hz and 5 Hz signals. I just know that I need to use a D/A converter and a signal conditioning (amplifier and filter) circuit. How to proceed. Are there any proper commercial techniques related to DAQ design? I have collected some data from some micrcontroller project sites but I am seeing some expert comments or suggestions being passed in this group and I want to get some suggestions.
Thanks in advance.