Tektronix DMM4020, Техническое справочное руководство

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DMM4020
Technical Reference
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.

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.
•
Use caution when working with voltages above 30 V ac rms, 42
V ac peak, or 42 V dc. These voltages pose a shock hazard.
•
Use only the replacement fuse(s) specified by the manual.
•
Use the proper terminals, function, and range for your
measurements.
•
Do not operate the Meter around explosive gas, vapor, or dust.
•
When using probes, keep your fingers behind the finger
guards.
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