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Cooling
Safety
© National Instruments Corporation
Table A-3. Cooling Specifications
Characteristic
Per Slot Cooling Capacity
Module Cooling System
Slot Airflow Direction
Module Cooling Intake
Module Cooling Exhaust
Power Supply Cooling
System
Power Supply Cooling
Intake
Power Supply Cooling
Exhaust
Module Cooling Fan
MTBF
Power Supply/Fan Unit
Table A-4. Safety Specifications
Characteristic
Safety Characteristics
A-3
Appendix A
Description
Slot cooling capacity in worst-case slot
is 20 W with fan speed set to HI
Forced air circulation (positive
pressurization) via two 60 cfm fans with
HI/LO speed selector
P1 to P2, bottom of module to top of
module
Bottom rear of mainframe
Along both sides of mainframe
Forced air circulation via integrated fan
Rear of mainframe
Along both sides of mainframe rear and
upper rear panel
40,000+ hr
Replacement in under 5 minutes
Description
UL 3111-1, IEC 1010-1, CSA 22.2
No. 1010.1
Installation Category II
Pollution Degree 2
Safety Class 1
Specifications
PXI-1000 User Manual
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