1.4 About this operating manual
Narda NBM-550 5
Characters and symbols used
Various elements are used in this operating manual to
indicate special meanings or particularly important
passages in the text.
Symbols and terms used in warnings
According to the American National Standard ANSI Z535.6-
2006, the following warnings, symbols, and terms are used
in this document:
Structure of warnings
All warnings are structured as follows:
The general danger symbol warns of risk of serious injury
when used with the signal words CAUTION, WARNING,
and DANGER. Follow all the instructions in order to avoid
injuries or death.
NOTICE
Indicates a danger that results in damage to or destruction
of the instrument.
CAUTION
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
WARNING
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
DANGER
Indicates a hazardous situation which, if not avoided, will
result in death or serious injury.
SIGNAL WORD
Type and source of danger
Consequences of failure to observe warning
Instructions for preventing danger
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