[SI-LIST] Re: jitter measurements on clock
- From: Iliya Zamek <i_zamek@xxxxxxxxx>
- To: prasad <hariprasad.palli@xxxxxxxxx>, si-list@xxxxxxxxxxxxx
- Date: Wed, 11 Aug 2010 13:40:36 -0700 (PDT)
Hello Prasad,
In a Clock there is no Data dependent jitter components like ISI.
Periodic component is possible, but they are usially negligible. That is why
Clock Jitter specifies as RMS.
TIE measurements and use RMS would be fine.
The problem only that the measurements will depend on the synchronization you
will use.
You can see more about it in
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1275150
Regards,
Iliya
----- Original Message ----
From: prasad <hariprasad.palli@xxxxxxxxx>
To: si-list@xxxxxxxxxxxxx
Sent: Wed, August 11, 2010 10:34:15 AM
Subject: [SI-LIST] jitter measurements on clock
hi All,
normally when we look at the data sheets of a clock signal for the jitter
number, they usually specify it a RMS jitter.
i understand from the basics that , only random jitter is quantified as RMS.
i am not sure why there is only random jitter in the clock. is the
Deterministic component is negligible?
in that case, using our EzJIT plus software, if i want to measure this spec
of a the clock, what would be my measurement?
is it ok, if i measure the TIE of the clock and take the RMS of the TIE
trend?
thanks,
hari
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