National Instruments NI 9264 - Manual (Page 17)

© National Instruments Corp. 17 NI 9264 Operating Instructions and Specifications
Measurement Category II is for measurements performed on
circuits directly connected to the electrical distribution system.
This category refers to local-level electrical distribution, such as
that provided by a standard wall outlet, for example, 115 V for U.S.
or 230 V for Europe.
Caution Do not connect the NI 9264 to signals or use for
measurements within Measurement Categories III or IV.
Safety Standards
This product is designed to meet the requirements of the following
standards of safety for electrical equipment for measurement,
control, and laboratory use:
• IEC 61010-1, EN 61010-1
• UL 61010-1, CSA 61010-1
Note For UL and other safety certifications, refer to
the product label or visit ni.com/certification ,
search by module number or product line, and click
the appropriate link in the Certification column.