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Description / Abstract:
This specification is designed for use in conjunction with other
families of documents such as IEEE Std1101.x, IEEE Standard for
Mechanical Core Specifications for Microcomputers; IEEE Std 896.x,
IEEE Standard Backplane Bus Specification for Multiprocessor
Architectures: Futurebus+; IEEE Std 1596-1992, IEEE Standard for
Scalable Coherent Interface (SCI); IEEE Std 1014-1987, IEEE
Standard for a Versatile Backplane Bus: VMEbus; IEEE Std 1296-1987,
IEEE Standard for a High-Performance Synchronous 32-Bit Bus:
MULTIBUS®2 II; and IEEE Std 1301- 1991, IEEE Standard for a Metric
Equipment Practice for Microcomputers—Coordinating Document.
This standard is intended to be used as a core specification. It
contains the minimum environmental withstand conditions that are
applicable to computer modules/circuit boards and all of the
components attached to those modules. It has been created to
provide general environmental withstand conditions for one or more
of the previously listed computer buses or interconnect standards.
It may also apply to electronic equipment in general.
While this document was specifically created for use with IEEE
computer bus standards, nothing herein is intended to restrict its
use for other applications, where applicable. A supplier and user
may agree to more or less restrictive environmental specifications
than those listed in this standard. However, if their
specifications are less restrictive than those listed herein,
neither supplier nor user may claim conformance to this
document.
Purpose
The purpose of this standard is to provide a common set of
specifications for physical integrity and environmental performance
levels for computer modules and their components.
It is the responsibility of the system designer to evaluate the
relationship between this module-level environmental specification
and the system-level environmental specification for the enclosure
that contains the modules. For example, in some applications, the
modules are conduction cooled and a system-level thermal "model" is
required to determine the relationship between the module's heat
sink and the system-level cooling medium.