Tektronix TH3000 Series, Installation And Safety Instructions, Page: 18 / 94

Compliance Information
be expected. This location is a typical of fi ce/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.
Pollution Degree Pollution Degree 2 (as de fi ned in IEC 61010-1).
Installation (Overvoltage)
Category Descriptions
Terminals on this product may have different installation (overvoltage) category
designations. The installation categories are:
Measurement Category IV. For measurements performed at the source of
low-voltage installation.
Measurement Category III. For measurements performed in the building
installation.
Measurement Category II. For measurements performed on circuits directly
connected to the low-voltage installation.
Measurement Category I. For measurements performed on circuits not
directly connected to MAINS.
Overvoltage Category
Overvoltage Category II (as de fi ned in IEC 61010-1)
12 THS3000 Series Oscilloscopes Installation and Safety Instructions