NI 8236 User Guide and Specifications
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© National Instruments
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3
This is a pollution degree 2 device. Do
not
operate the device in an explosive atmosphere or
where flammable gases or fumes may be present. Operate the device only at or below the
pollution degree stated in the specifications. Pollution consists of any foreign matter—solid,
liquid, or gas—that may reduce dielectric strength or surface resistivity. The following is a
description of pollution degrees.
•
Pollution Degree 1—No pollution or only dry, nonconductive pollution occurs. The
pollution has no effect.
•
Pollution Degree 2—Normally only nonconductive pollution occurs. Occasionally,
nonconductive pollution becomes conductive because of condensation.
•
Pollution Degree 3—Conductive pollution or dry, nonconductive pollution occurs.
Nonconductive pollution becomes conductive because of condensation.
Clean the device and accessories by brushing off light dust with a soft, nonmetallic brush.
Remove other contaminants with a stiff, nonmetallic brush. The unit
must
be completely dry and
free from contaminants before returning it to service.
You
must
insulate signal connections for the maximum voltage for which the device is rated. Do
not
exceed the maximum ratings for the device. Remove power from signal lines before
connection to or disconnection from the device.
Electromagnetic Compatibility Guidelines
This product was tested and complies with the regulatory requirements and limits for
electromagnetic compatibility (EMC) as stated in the product specifications. These requirements
and limits are designed to provide reasonable protection against harmful interference when the
product is operated in its intended operational electromagnetic environment.
This product is intended for use in industrial locations. There is no guarantee that harmful
interference will not occur in a particular installation, when the product is connected to a test
object, or if the product is used in residential areas. To minimize the potential for the product to
cause interference to radio and television reception or to experience unacceptable performance
degradation, install and use this product in strict accordance with the instructions in the product
documentation.
Furthermore, any changes or modifications to the product not expressly approved by National
Instruments could void your authority to operate it under your local regulatory rules.
Caution
To ensure the specified EMC performance, operate this product only with
shielded cables and accessories.
