A-6 1266 Product Specifications
Appendix A
Cooling Table
Cooling Chart
Figure A-2 shows 1266 cooling specifications (for all 1266 slots) per VXI-8
Specification Draft 2.0 and Airflow Test Fixture revision 1.7 with:
•
VXI-8 Standard Modules installed in other slots.
•
Measurements taken at 1,500 m altitude.
Safety/Environmental Specifications
This section describes safety and environmental specifications for the
1266 mainframe, including:
•
Environmental Specifications
•
Electromagnetic Compliance/Safety Specifications
Area
Specification/Comments
Cooling Modes
High or variable cooling mode switchable on the front panel. Same
fan cools power supply and modules.
High-Speed Fan Mode
Maximum airflow all the time.
Variable Fan Speed
Mode:
Fan speed changes between high and low as a function of ambient
and power supply temperatures.
AirFlow Path
Air is routed into the mainframe rear and exhausted out the left side
(viewed from the front) when the mainframe is in horizontal
orientation. When the mainframe is rack-mounted, allow 50 mm of
clearance at the rear and left side for proper airflow.
Acoustic Noise*
High Speed Fan Mode: <40 dBA.
Variable Fan on Low Speed: <30 dBA.
* Sound power at bystander position one meter in front of mainframe.
Figure A-2. 1266 Mainframe Cooling Capacity
2.0
1.5
1.0
0.5
2.0
4.0
6.0
8.0
0.0
Pressure Drop
Across Module
(mm H 0)
2
Airflow L/S
All
Slots
Summary of Contents for 1266
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