Chapter 3
Integration and System Considerations
NI PXIe-5450 User Manual
3-2
ni.com
components, increase noise, accelerate drifts, and decrease product life.
Beyond the maximum specified operating temperatures, the device may
perform differently than during factory calibration, resulting in additional
measurement errors. Also, operating the device outside of the humidity
specification (>80%, >35 °C) may cause leakages between circuit
components and introduce measurement error.
To optimize cooling and ensure best performance and reliability the use the
following guidelines:
•
Chassis that provide multiple fan speed settings should always be run
with fans set on high or auto if applicable to your chassis. Never set the
fans to low or turn them off.
Note
In newer NI chassis the settings are HIGH and AUTO, in some older NI chassis
the fan settings may be HI and LO.
•
All empty slots in the chassis should be covered with a blank slot filler
panel.
•
Remove and clean the inlet filters often to prevent buildup of dust and
other foreign material that may restrict airflow.
•
The chassis should be located such that the fan inlets and outlet vents
are not obstructed. Other objects and equipment should be kept a
minimum of 3 inches from the fan inlets.
For more information about forced-air cooling, refer to your chassis
documentation.
NI PXI and PXI Express signal generators are designed to operate at shock
up to 30 g, 11 ms, half-sine. It is specified to withstand shock up to 50 g,
11 ms, half-sine when not operating (shipping/storage).
NI PXI and PXI Express signal generators are designed to withstand total
random vibration of 0.31 g
rms
operational and 2.46 g
rms
non operational per
IEC 68-2-64.
