DMM4040/4050
Users Manual
1-4
Do Not Operate With Suspected Failures. If you suspect that there is damage to this
product, have it inspected by qualified service personnel.
Avoid Exposed Circuitry. Do not touch exposed connections and components when
power is present.
Use Proper Fuse. Use only the fuse type and rating specified for this product.
Keep Product Surfaces Clean and Dry.
XW Warning
To avoid possible electric shock, personal injury, or death, read
the following before using the Meter.
• Use the Meter only as specified in this manual, or the
protection provided by the Meter might be impaired.
• Do not use the Meter in wet environments.
• Inspect the Meter before using it. Do not use the Meter if it
appears damaged.
• Inspect the test leads before use. Do not use them if
insulation is damaged or metal is exposed. Check the test
leads for continuity. Replace damaged test leads before
using the Meter.
• Verify the Meter's operation by measuring a known voltage
before and after using it. Do not use the Meter if it operates
abnormally. Protection may be impaired. If in doubt, have
the Meter serviced.
• Whenever it is likely that safety protection has been
impaired, make the Meter inoperative and secure it against
any unintended operation.
• Servicing of the Meter should be performed by qualified
service personnel.
• Do not apply more than the rated voltage, as marked on the
Meter, between the terminals or between any terminal and
earth ground.
• While in IEC Measurement Category II environments, do not
apply voltages above 600 V ac to the input of the Meter. See
“Description of IEC 61010 Measurement Categories” later in
this manual.
• Always use the power cord and connector appropriate for
the voltage and outlet of the country or location in which
you are working.
• Always use a power cord with a ground connection and
ensure the ground is properly connected to the power
distribution system.
• Remove test leads from the Meter before opening the case.
• Never remove the cover or open the case of the Meter
without first removing it from the main power source.
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