© National Instruments Corporation 31 NI 5421 SpecificationsEnvironmentNI PXI-5421 EnvironmentNote To ensure that the NI PXI-5421 cools effectively, follow the guidelines in theMaintain Forced-Air Cooling Note to Users included in the NI 5421 kit. The NI PXI-5421is intended for indoor use only.Table 14.Specifications Value CommentsOperatingTemperature0 ºC to +55 ºC in all NI PXI chassis except the following:0 ºC to +45 ºC when installed in an NI PXI-101x orNI PXI-1000B chassis.Meets IEC-60068-2-1 and IEC-60068-2-2.—StorageTemperature–25 ºC to +85 ºC. Meets IEC-60068-2-1 andIEC-60068-2-2.—OperatingRelativeHumidity10% to 90%, noncondensing. Meets IEC-60068-2-56. —StorageRelativeHumidity5% to 95%, noncondensing. Meets IEC-60068-2-56. —OperatingShock30 g, half-sine, 11 ms pulse. Meets IEC-60068-2-27. Testprofile developed in accordance with MIL-PRF-28800F.Spectral and jitterspecificationscould degrade.StorageShock50 g, half-sine, 11 ms pulse. Meets IEC-60068-2-27. Testprofile developed in accordance with MIL-PRF-28800F.—OperatingVibration5 Hz to 500 Hz, 0.31 g rms . Meets IEC-60068-2-64. Spectral and jitterspecificationscould degrade.StorageVibration5 Hz to 500 Hz, 2.46 g rms . Meets IEC-60068-2-64. Testprofile exceeds requirements of MIL-PRF-28800F, Class B.—Altitude 2,000 m maximum (at 25 °C ambient temperature) —PollutionDegree2 —