user manual

USB-9201/9221 User Guide and Specifications 14 ni.com
Isolation Voltages for USB-9201/9221 with DSUB
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.
Safety Standards
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
Note 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.
Hazardous Locations
The USB-9201/9221 is not certified for use in hazardous locations.
Environmental
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