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| Effect of the Bandwidth on jitter measurement | ||
| Author lassa Views 19 Posted at 2008/9/4 16:53 [View In Forum] | ||
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Helloywfdvnfles ywfdvnfles I measure the rms jitter of an optical signal of a 10G XFP using a high bandwidth oscilloscope (Agilent 86100B mainframe and Agilent 86116B module) but without the a 4th order Bessel Thompson filter with a –3dB point at 0.75 of the bit rate. Should I expect much more jitter than if I use the filter? ywfdvnfles ywfdvnfles Can I correct my rms result with the following formula to simulate the filter?ywfdvnfles ywfdvnfles Jrms(with filter) = Jrms(without filter)*(Bandwidth filter / Bandwidth oscillo)^0.5ywfdvnfles ywfdvnfles ywfdvnfles ywfdvnfles Thanks |
| Reply No. | Replier | Total Replies 1 [View All Replies] [New Reply] | Replied at |
| 1 | z315 | Jitter in general will be better when the noise bandwidth is reduced. Also when the predominant jitter component is white noise (random jitter) the scaling is proportional to the sqrt(bandwidth). In practice however, both of these are not necessarily valid and your results will be somewhat different. Stephen Didde Sr Applications Engr. Agilent Technologies |
2008/9/4 16:53 |
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