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USB-9211/9211A User Guide and Specifications
16
ni.com
Offset error from source impedance .......0.05
µV typ, 0.07 µV max  per  Ω 
source impedance due to input 
current
Power Requirements
Current consumption from USB.............500 mA, max
Suspend mode..................................2.5 mA, max
Bus Interface
USB specification
USB-9211 ........................................USB 2.0 full speed
USB-9211A .....................................USB 2.0 high speed
Physical Characteristics
If you need to clean the module, wipe it with a dry towel.
Dimensions ............................................14 cm 
× 8.6 cm × 2.5 cm
(5.51 in. 
× 3.37 in. × 0.99 in.)
Weight ....................................................Approx. 350 g (12.3 oz)
Screw-terminal wiring ............................12 to 24 AWG wire with 10 mm 
(0.39 in.) of insulation stripped 
from the end
Torque for screw terminals.....................0.5 – 0.6 N · m 
(4.4 – 5.3 lb · in.)
Safety
Standards
The USB-9211/9211A 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
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.