pornchai Putting serie termination in different position while keep total trace length same will effect flight time a little. I have run a simulation before to see different jitter showed on receiver waveform by only moving serie termation R along trace. So keep each segment same is most safe way. But this kind of fligh time difference is very small value. Running a simulation will give you more indicate on if you can only matching total length On 12/1/06, Jory McKinley <jory_mckinley@xxxxxxxxx> wrote: > Hello Pornchai, > If the net constraint for your particular application requires matched t-line > lengths (diff or single ended) within a net class which also includes a > series termination for each net I would attempt to match each net segment to > and from the series termination. Of course if you can simulate the topology > you will be able to determine the variation you are allowed within each net > segment. > -Jory > p_pornchai <ppornjaturapak@xxxxxxxxxxx> wrote: Hi All, > > When do the PCB routing for high speed design from point to point. There > is a requirement that we need to match the trace length for each net in the= > > group. If there is a serie termination between the two point, is it require= > > that each segment(each net before the termination should equal and each > net after the termination should be equal) to be match in length or can we > only match the total length of the trace(lenght of segment of trace before > the termination + lenght of segment of trace after the termination). > > Thanks in advance for all your help. > > pornchai > > ------------------------------------------------------------------ > 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 FAQ wiki page is located at: > http://si-list.org/wiki/wiki.pl?Si-List_FAQ > > List technical documents are available at: > http://www.si-list.org > > 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 > > > > > > --------------------------------- > Check out the all-new Yahoo! Mail beta - Fire up a more powerful email and > get things done faster. > > ------------------------------------------------------------------ > 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 FAQ wiki page is located at: > http://si-list.org/wiki/wiki.pl?Si-List_FAQ > > List technical documents are available at: > http://www.si-list.org > > 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 FAQ wiki page is located at: http://si-list.org/wiki/wiki.pl?Si-List_FAQ List technical documents are available at: http://www.si-list.org 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