NI 9157/9159 Operating Instructions and Specifications
4
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Mounting the NI 9157/9159
You can mount the chassis horizontally either on a 35 mm DIN rail or on a
flat, vertical, metallic surface such as a panel or wall. The maximum
allowable ambient temperature for operation is 55 °C. Mounting the chassis
in a different orientation or on a nonmetallic surface can reduce the
maximum allowable ambient temperature and can affect the typical
accuracy of modules in the chassis. Figure 2 shows the chassis mounted
horizontally.
Figure 2.
NI 9157/9159 Mounted Horizontally
Measure the ambient temperature at each side of the chassis, 63.5 mm
(2.5 in.) from the side and 50.8 mm (2 in.) forward from the rear of the
chassis, as shown in Figure 3.
Note
For more information about how different mounting configurations can cause
temperature derating, go to
ni.com/info
and enter the Info Code
criomounting
.
Note
For more information about typical accuracy specifications for modules, go to
ni.com/info
and enter the Info Code
criotypical
.
Caution
Your installation must meet the following requirements for space and cabling
clearance:
•
Allow 50.8 mm (2 in.) on the top and the bottom of the chassis for air circulation.
•
Allow 50.8 mm (2 in.) in front of modules for cabling clearance for common
connectors, such as the 10-terminal, detachable screw terminal connector, as shown
in Figure 3.
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