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741B/743B
Users Manual
AC-Alternating Current
DC-Direct Current
Fuse
Pressure
ON/OFF
Recycling
To protect yourself, follow these safety guidelines:
Do not use the calibrator if it is damaged. Before
you use the calibrator, inspect the insulating
cover. Look for cracks or missing plastic. Pay
particular attention to the insulation surrounding
the connectors.
8
CAUTION see explanation in manual
Common (LO) Input equipotentiality
Equipment protected throughout by DOUBLE INSULATION or
REINFORCED INSULATION
Conforms to relevent European Union directives.
Conforms to relevent Canadian Standards Association directives.
Overvoltage (Installation) Category
of Impluse Withstand Voltage protection provided. Typical locations
CAT
II
include; Mains Wall outlets, local appliances and PORTABLE
EQUIPMENT.
Figure 2. Definition of Symbols
Disconnect the power and discharge all high-
voltage capacitors in the equipment under test
before testing resistance or continuity.
Inspect the test leads for damaged insulation or
exposed metal. Check test lead continuity.
Replace damaged test leads before using the
calibrator.
II
per IEC 1010-1 refers to the level
gj56f.eps
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