NI USB-9421 User Guide and Specifications
16
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NI USB-9421 with D-SUB Safety Voltages
Channel-to-COM ....................................30 V max
Isolation
Channel-to-channel..........................No isolation between channels
Channel-to-earth ground
Withstand .................................1,000 V
rms
, verified by a 5 second
dielectric withstand test
Continuous ...............................60 VDC,
Measurement Category I
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.
Safety Standards
The NI USB-9421 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 model number or product line, and click the
appropriate link in the Certification column.
Hazardous Locations
The NI USB-9421 is
not
certified for use in hazardous locations.
Environmental
The NI USB-9421 is intended for indoor use only.
Operating temperature
(IEC60068-2-1, IEC 60068-2-2) ............0 to 60 °C
Storage temperature
(IEC60068-2-1, IEC 60068-2-2) ............–40 to 85 °C
