HP 37717C, Calibration Manual, Page: 28 / 399

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General Information
Safety Precautions for the Operator
Safety Symbols
The following symbols on the instrument and in the manual indicate precautions
which must be taken to maintain safe operation of the instrument
The Instruction Documentation Symbol. The product is marked with
this symbol when it is necessary for the user to refer to the
instructions in the supplied documentation.
Indicates the field wiring terminal that must be connected to earth
ground before operating the equipment - protects against electrical
shock in case of fault.
Frame or chassis ground terminal - typically connects to the
equipment's metal frame.
Alternating current (AC)
Direct current (DC)
Indicates hazardous voltages
Warning denotes a hazard. It calls attention to a procedure, which if
not correctly performed or adhered to could result in injury or loss of
life. Do not proceed beyond a warning note until the indicated condi-
tions are fully understood and met.
Caution denotes a hazard. It calls attention to a procedure, which if
not correctly performed or adhered to could result in damage to or
destruction of the instrument. Do not proceed beyond a warning note
until the indicated conditions are fully understood and met.
Indicates that a laser is fitted. The user must refer to the manual for
specific Warning or Caution information to avoid personal injury or
damage to the product.
WARNING
CAUTION