Справочник Пользователя для National Instruments USB-9221

Channel-to-channel.................................None

Channel-to-earth ground

Continuous.......................................60 VDC, Measurement 

Category I

Withstand.........................................1,000 V

rms

, verified by a 

dielectric withstand test

Measurement Category I is for measurements performed on circuits not 
directly connected to the electrical distribution system referred to as 
MAINS voltage. MAINS is a hazardous live electrical supply system that 
powers equipment. This category is for measurements of voltages from 
specially protected secondary circuits. Such voltage measurements include 
signal levels, special equipment, limited-energy parts of equipment, 
circuits powered by regulated low-voltage sources, and electronics. Do not 
use this module with Measurement Category II, III, or IV voltages.

The USB-9201/9221 is designed to meet the requirements of the following 
standards of safety for electrical equipment for measurement, control, and 
laboratory use:

•

EN 61010-1, IEC 61010-1

•

UL 61010-1

•

CAN/CSA-C22.2 No. 61010-1

For UL and other safety certifications, refer to the product label, or visit 

ni.com/certification

, search by model number or product line, and click the 

appropriate link in the Certification column.

The USB-9201/9221 is not certified for use in hazardous locations.

The USB-9201/9221 is intended for indoor use only.

Operating temperature
(IEC 60068-2-1, IEC 60068-2-2) ...........0 to 60 °C

Storage temperature
(IEC 60068-2-1, IEC 60068-2-2) ...........– 40 to 85 °C