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hi everybody, i am not able to obtain a sampling rate more than 110 kHz using MATLAB or BORLAND C++ 5. If I use more than 1 MHz sampling rate, then more and more samples has the same value; getting a random step waveform. If any body knows how to obtain higer sample rates of the order of 1GHz, pls help me. If it is impossible to obtain that much rates pls inform me abt the limitions of A-D converter/PC. |
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?? sample rates more than 100kHz
Started by ●August 25, 2003
Reply by ●August 25, 20032003-08-25
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Ravikiran Dn- > i am not able to obtain a sampling rate more than 110 kHz > using MATLAB or BORLAND C++ 5. If I use more than 1 MHz sampling > rate, then more and more samples has the same value; getting a random > step waveform. If any body knows how to obtain higer sample rates of > the order of 1GHz, pls help me. If it is impossible to obtain that > much rates pls inform me abt the limitions of A-D converter/PC. What data acq/DSP board are you using? The hardware and underlying driver/library makes all the difference. Jeff Brower system engineer Signalogic |
Reply by ●August 26, 20032003-08-26
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Ravikiran DN- > I am just using my P4 pc with MIC as input. I am reading data > with wavrecord. My original idea is to interface my TV cable directly > to the computer using MATLAB. Atleast a sampling rate of 100MHz is > necessary. Is it possible with my configuration? I am also ready to > use assembly language to get it. Well, a mic input is not good for more than 20 kHz or so bandwidth. For 100 MHz sampling, I think you will need some type of plug-in video/imaging card. It's more of a hardware issue than software; that's a fast rate and you have signal integrity and noise issues to deal with, especially in a PC environment. Maybe the Data Acquisition toolbox and TMW's supported hardware recommendations would be some things to look at. Jeff Brower system engineer Signalogic > ---------------------------------- > What data acq/DSP board are you using? The hardware and underlying > driver/library > makes all the difference. > > Jeff Brower > system engineer > Signalogic > > ---------------------------------- > Ravikiran Dn- > > i am not able to obtain a sampling rate more than 110 kHz > using MATLAB or BORLAND C++ 5. If I use more than 1 MHz sampling > rate, then more and more samples has the same value; getting a random > step waveform. If any body knows how to obtain higer sample rates of > the order of 1GHz, pls help me. If it is impossible to obtain that > much rates pls inform me abt the limitions of A-D converter/PC. |
