Hello, I am designed a DSP based which measures the rotation rate (sagnac phase). But the problem i am facing is that jitter in the clock which is used as sampling input to the ADC will spoil by algorithm. The sampling point is very crucial. How can i solved this problem. suggest we a solution waiting for reply with regards praveen
effect of clock jitter on ADC
Started by ●November 28, 2003
Reply by ●November 28, 20032003-11-28
"praveen" <praveenkumar1979@rediffmail.com> wrote in message news:ff8a3afb.0311280552.57df7d1d@posting.google.com...> Hello, > I am designed a DSP based which measures the rotation rate (sagnac > phase). But the problem i am facing is that jitter in the clock which > is used as sampling input to the ADC will spoil by algorithm. The > sampling point is very crucial. > How can i solved this problem.First you need to quantify the problem. How much jitter can you afford? There are no zero jitter clocks. Some have less jitter and some more... /Mikhail
Reply by ●November 29, 20032003-11-29
praveen wrote:> Hello, > I am designed a DSP based which measures the rotation rate (sagnac > phase). But the problem i am facing is that jitter in the clock which > is used as sampling input to the ADC will spoil by algorithm. The > sampling point is very crucial. > How can i solved this problem. > > suggest we a solution > waiting for reply > with regards > praveenYour question is too diffuse. You have written, in effect, "What I'm doing isn't good enough. How can I get better results without necessarily doing it better? How much jitter do you experience? How much jitter can you afford? What to you mean by "Sagnac phase"? Surely, you measure the interference pattern -- one of average, not instantaneous, intensity. If you in fact measure the individual phases of counter-rotating light beams, I very much want to know how you do that, and so would most others here. Jerry -- Engineering is the art of making what you want from things you can get. �����������������������������������������������������������������������