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DATE
DOCUMENT NAME
DOCUMENT #
PAGE
Janurary 5,2006
Harman Multimedia OnStage UD CE Test Report
2006 011114 CE AUS/NZ
25 of 72
3.8. Device Performance Criteria for Immunity Tests
Three criteria of acceptable performance are defined by EN 55024. These are as follows
o
Criterion A - The equipment shall continue to operate as intended without operator intervention.
No degradation of performance or loss of function is allowed below a performance level specified
by the manufacturer when the equipment is used as intended. The performance level may be
replaced by a permissible loss of performance. If the minimum performance level or the permissible
performance loss is not specified by the manufacturer, then either of these may be derived from the
product description and documentation, and by what the user may reasonably expect from the
equipment if used as intended.
o
Criterion B - During the test, degradation of performance is allowed. However, no change of
operating state or stored data is allowed to persist after the test. After the test, the equipment shall
continue to operate as intended without operator intervention. The performance level may be
replaced by a permissible loss of performance. If the manufacturer does not specify the minimal
performance level (or the permissible performance loss), then either of these may be derived from
the product description and documentation, or by what the user may reasonably expect from the
equipment if used as intended.
o
Criterion C - Loss of function is allowed, provided the function is self-recoverable, or can be
restored by the operation of the controls by the user in accordance with the manufacturer’s
instructions. Functions, and/or information stored in non-volatile memory, or protected by a battery
backup, shall not be lost.
For each test method, EN 55024 specifies the appropriate criterion to be met.
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