Depends on the bit_error_rate (BER). The FC Jitter Working group uses : pk_to_pk= +/- 7 sigma (rms x 14) for 1e-12 BER. Brad Henson Raytheon "Alex Horvath" <alexh@agilestorag To: <alexh@xxxxxxxxxxxxxxxx>, <hata@xxxxxxxxxx>, e.com> <si-list@xxxxxxxxxxxxx> Sent by: cc: si-list-bounce@fre Subject: [SI-LIST] Re: rms jitter vs p-p jitter elists.org 09/28/2001 11:55 AM Please respond to alexh Ok, RMS is essentially the same as sigma. Three sigma includes 99.8% of all samples. So you would probably be safe in saying that the peak jitter is 3 times the RMS. -----Original Message----- From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of Alex Horvath Sent: Friday, September 28, 2001 11:44 AM To: hata@xxxxxxxxxx; si-list@xxxxxxxxxxxxx Subject: [SI-LIST] Re: rms jitter vs p-p jitter For a non-random process peak 1/sqrt2 * VRMS however jitter is a random process so in theoretical terms the peak jitter value has no meaning. You have to define it in terms of sigma (assuming it's a normal dist). There must be some math gurus here that could relate RMS to sigma. Then you can say something like "the 3 sigma jitter is x ns", 3 sigma including something like 98% (I forgot the exact figure) of all jitter samples. -----Original Message----- From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of hata@xxxxxxxxxx Sent: Friday, September 28, 2001 4:58 AM To: si-list@xxxxxxxxxxxxx Subject: [SI-LIST] rms jitter vs p-p jitter Dear SI guru, Appreciate if somebody can shed some light: If given a rms jitter value, is there any way this can be converted into peak-peak jitter value? Thank you. _____________________________________________________________ ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu