ASTM B 854 Standard Guide for Measuring Electrical Contact Intermittences
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ASTM B 854 Document Information:
Title
Standard Guide for Measuring Electrical Contact Intermittences
ASTM International
Publication Date:
Oct 10, 1998
Scope:
The techniques described in this guide apply to electrical circuits
that include one or more
electrical contacts in devices such as slip rings, separable
connectors, electromechanical relays
or closed switch contacts. The user should determine applicability for
other devicesTable 1.
The range of techniques described apply to circuit discontinuities
(intermittences) of durations
ranging from approximately 10 nanoseconds to several seconds and of
sufficient magnitude to cause
alteration of the circuit function. Extension of the guide to shorter
duration events may be
possible with suitable instrumentation. Events of longer duration may
be monitored by techniques
for dc measurements such as those described in Test Methods B 539 or
by adaptation of methods
described in this guide.
The techniques described in this guide apply to electrical circuits
carrying currents typical of
signal circuits. Such currents are generally less than 100 ma.
Extension of these techniques to
circuits carrying larger currents may be possible, but the user should
evaluate applicability
first.
This standard does not purport to address all of the safety concerns,
if any, associated with its
use. It is the responsibility of the user of this standard to become
familiar with all hazards
including those identified in the appropriate Material Safety Data
Sheet for this product/material
as provided by the manufacturer, to establish appropriate safety and
health practices, and
determine the applicability of regulatory limitations prior to use.
Keywords:
- bit error rate
- electrical noise
- reliability
- resistance
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