Tektronix DMM4020, Техническое справочное руководство

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Introduction and Specifications
General Safety Summary
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General Safety Summary
Review the following safety precautions to avoid injury and prevent damage to this
product or any other products connected to it.
To avoid potential hazards, use this product only as specified.
Only qualified personnel should perform service procedures.
While using this product, you may need to access other parts of a larger system. Read the
safety sections of the other component manuals for warnings and cautions related to
operating the system.
This instrument has been designed and tested in accordance with the European standard
publication EN 61010-1:2001 and U.S./Canadian standard publications UL 61010-1 and
CAN/CSA-C22.2 No.61010-1-04. The instrument has been supplied in a safe condition.
This manual contains information and warnings that must be observed to keep the
instrument in a safe condition and ensure safe operation.
To use the instrument correctly and safely, read and follow the precautions in this section
and follow all the safety instructions or warnings given throughout this manual that relate
to specific measurement functions. In addition, follow all generally accepted safety
practices and procedures required when working with and around electricity.
CAT I
equipment is designed to protect against transients from high-voltage, low-energy
sources, such as electronic circuits or a copy machine.
CAT II
equipment is designed to protect against transients from energy-consuming
equipment supplied from the fixed installation, such as TVs, PCs, portable tools, and
other household appliances.
To Avoid Fire or Personal Injury
Use Proper Power Cord.
Use only the power cord specified for this product and
certified for the country of use.
Use Proper Voltage Setting.
Before applying power, ensure that the line selector is in
the proper position for the source being used.
Connect and Disconnect Properly.
Do not connect or disconnect probes or test
leads while they are connected to a voltage source.
Ground the Product.
This product is grounded through the grounding conductor of the
power cord. To avoid electric shock, the grounding conductor must be connected to earth
ground. Before making connections to the input or output terminals of the product, ensure
that the product is properly grounded.
Observe All Terminal Ratings.
To avoid fire or shock hazard, observe all ratings
and markings on the product. Consult the product manual for further ratings information
before making connections to the product.
Do not apply a potential to any terminal, including the common terminal, that exceeds the
maximum rating of that terminal.
Power Disconnect.
The power cord disconnects the product from the power source.
Do not block the power cord; it must remain accessible to the user at all times.
Do Not Operate Without Covers.
Do not operate this product with covers or
panels removed.
Do Not Operate With Suspected Failures.
If you suspect that there is damage to
this product, have it inspected by qualified service personnel.
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