Probably not too many of you are using a sampling scope to measure RJ, but in case you are, the magic number is . . .(drum roll please). . . 4680. The PCIe Gen 3 compliance pattern (short version) is made of 36 blocks of 130 bits each. This works out to 4680 bits. Thanks to everyone who pitched in. Less than 24 hr. turn time. Pretty decent. Greg Edlund Senior Engineer Signal Integrity and System Timing IBM Systems & Technology Group 3605 Hwy. 52 N Bldg 050-3 Rochester, MN 55901 ----- Forwarded by Gregory R Edlund/Rochester/IBM on 04/17/2014 02:21 PM ----- From: Gregory R Edlund/Rochester/IBM To: si-list@xxxxxxxxxxxxx, Date: 04/16/2014 04:09 PM Subject: PCIe Gen 3 Compliance Pattern How Long is the Compliance Pattern for PCIe Gen 3? The spec lists several different types of compliance patterns. Some of them look rather large. I'm not sure which one my device is using, but my sampling scope won't sync to it. Anybody out there seen this? Greg Edlund Senior Engineer Signal Integrity and System Timing IBM Systems & Technology Group 3605 Hwy. 52 N Bldg 050-3 Rochester, MN 55901 ------------------------------------------------------------------ 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 forum is accessible at: http://tech.groups.yahoo.com/group/si-list List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu