10 Network AnalyzerSafety SymbolsGeneral definitions of safety symbols used on the instrumentor in manuals are listed below.Instruction Manual symbol: the product is markedwith this symbol when it is necessary for the userto refer to the instrument manual.Alternating current.Direct current.On (Supply).Off (Supply).In-position of push-button switch.Out-position of push-button switch.A chassis terminal; a connection to theinstrument’s chassis, which includes all exposedmetal structure.Standby.WARNING This warning sign denotes a hazard. It calls attention to aprocedure, practice, or condition that, if not correctly performed oradhered to, could result in injury or death to personnel.CAUTION This Caution sign denotes a hazard. It calls attention to a procedure,practice, or condition that, if not correctly performed or adhered to,could result in damage to or destruction of part or all of theinstrument.NOTE This Note sign denotes important information. It calls attention to aprocedure, practice, or condition that is essential for the user tounderstand.