Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: ANSI INCITS TR-46:2011
• Năm ban hành / Publication date: 2011
• Tình trạng / Status: A - Còn hiệu lực
• Tên tiếng Anh / Title in English: INCITS Technical Report for Information Technology – Fibre Channel – Methodologies for Signal Quality Specification (FC-MSQS)
• Số trang / Page: 184

Phạm vi áp dụng / Scope of standard

Introduction

This document is an INCITS technical report on the definitions
and measurement requirements for parameters related to signal
quality on FC links. The document describes measurement methods for
non-equalized and equalized links. The document describes new types
of jitter associated with reference receivers and methods for
determining signal quality in closed eye systems. MSQS does not
supersede the previously published Fibre Channel Methodologies for
Jitter and Signal Quality Specification technical report
(hereinafter referred to as FC-MJSQ) [2]. MSQS represents
additional information and methods that are not included in
FC-MJSQ.

This technical report compiles and provides additional
information beyond that supplied in FC-MJSQ to provide definitions
for the physical interface parameters used in FC-PI-5 [7]. The
existing signal and jitter specifications are incomplete as a
result of changes in how the electronics industry is implementing
Fibre Channel systems today compared to how systems were expected
to be implemented in the past. Examples of such changes are the use
of adaptive or predictive compensation schemes implemented in
active elements or ports, and higher speed operation at longer
distance.

The goals of this technical report are:

• To specify budget methods for equalized and non-equalized
links

• To define and describe the relationships between different
kinds of jitter

• To document the jitter and signal quality measurement
requirements that allow Fibre Channel developers to design
low-cost, multi-gigabaud links having bit error ratios below
10^-12 using interoperable and interchangeable components
between the interoperability points

• To specify measurement methods that are reproducible and that
more closely relate to observed bit error ratios in operating
links

• To specify channel characteristics that previously have not
been addressed in FC-MJSQ.

• To specify test patterns for scrambled and unscrambled
links.

• To specify and describe methods of measurement for links using
a reference receiver.

• To enable standardized specification enforcement for
compliance testing.

• The Methods for Signal Quality Specification (MSQS) technical
report is generated by an Ad Hoc group of companies interested in
providing a standard low cost interface for FC applications. This
Ad Hoc group is sanctioned by and operates under the jurisdiction
of the T11.2 technical committee of INCITS.

This technical report is informative. Certain contents of this
document may be normatively referenced or incorporated into
appropriate standards.