Tektronix 1760 series, Руководство пользователя

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Appendix A: Performance Specification
A-16
1760 Series Component Waveform/Vector Monitor User Manual
Table A- 19: Certifications and compliances (cont.)
CATEGORY STANDARDS OR DESCRIPTION
CAT I Secondary (signal level) or battery operated circuits of
electronic equipment.
Pollution Degree A measure of the contaminates that could occur in the
environment around and within a product. Typically the internal
environment inside a product is considered to be the same as the
external. Products should be used only in the environment for
which they are rated.
Pollution Degree 1
No pollution or only dry, nonconductive pollution occurs.
Products in this category are generally encapsulated,
hermetically sealed, or located in clean rooms.
Pollution Degree 2
Normally only dry, nonconductive pollution occurs.
Occasionally a temporary conductivity that is caused by
condensation must be expected. This location is a typical
office/home environment. Temporary condensation occurs
only when the product is out of service.
Pollution Degree 3
Conductive pollution, or dry, nonconductive pollution that
becomes conductive due to condensation. These are
sheltered locations where neither temperature nor humidity is
controlled. The area is protected from direct sunshine, rain, or
direct wind.
Pollution Degree 4
Pollution that generates persistent conductivity through
conductive dust, rain, or snow. Typical outdoor locations.
Safety Standards
U.S. Nationally
Recognized Testing
Laboratory Listing UL1244
Standard for electrical and electronic measuring and test
equipment.
Canadian Certification CAN/CSA C22.2 No. 231
CSA safety requirements for electrical and electronic
measuring and test equipment.
European Union
Compliance Low Voltage Directive 73/23/EEC, amended by 93/69/EEC
EN 61010-1 Safety requirements for electrical equipment for
measurement, control, and laboratory use.