© National Instruments Corporation 15 USB-9201/9221 User Guide and Specifications
Operating humidity
(IEC 60068-2-56)...................................10 to 90% RH, noncondensing
Storage humidity
(IEC 60068-2-56)...................................5 to 95% RH, noncondensing
Maximum altitude..................................2,000 m
Pollution Degree (IEC 60664)............... 2
Electromagnetic Compatibility
Emissions...............................................EN 55011 Class A at 10 m
FCC Part 15A above 1 GHz
Immunity................................................Industrial levels per
EN 61326-1:1997 + A2:2001,
Table A.1
EMC/EMI...............................................CE, C-Tick, and FCC Part 15
(Class A) Compliant
Note For EMC compliance, operate this device with shielded cabling.
CE Compliance
This product meets the essential requirements of applicable European
Directives, as amended for CE marking, as follows:
Low-Voltage Directive (safety)............. 73/23/EEC
Electromagnetic Compatibility
Directive (EMC).................................... 89/336/EEC
Note Refer to the Declaration of Conformity (DoC) for this product for any additional
regulatory compliance information. To obtain the DoC for this product, visit ni.com/
certification, search by model number or product line, and click the appropriate link
in the Certification column.
Calibration
You can obtain the calibration certificate for the USB-9201/9221 at
ni.com/calibration.
Calibration interval................................ 1 year