That's a very good point. I have a captive design within my system where I control the source and destination. If I am shipping an open box and customer will plug an unknown part to it, I will probably sand bag the receiver to the standard. Whether sand bagging is the right thing to do is another discussion. -----Original Message----- From: Charles Hill To: tkjeon@xxxxxxxx; dave.instone@xxxxxxxxxx Cc: si-list@xxxxxxxxxxxxx Sent: 3/23/2005 5:49 PM Subject: [SI-LIST] Re: Minimum eye opening of 8b10b encoded signals 4) Chris is right, most receivers do operate below the minimum receive level in SATA. Some receivers may exceed the spec requirements. However, relying on 150mV receiver sensistivity, for example, for the link to work is relying on an unspecified parameter and interchangability is not ensured. ------------------------------------------------------------------ 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: http://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: http://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