Keysight Technologies M5302A Startup Manual page 34

2 Setting up the M5302A module
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• To the extent possible, install the chassis in a location with lower
ambient temperatures. For example, avoid the situation where the
exhaust air from another chassis feeds into the air intake for this
chassis.
• If you have multiple M5302A modules and space is available in your
chassis, leave an empty slot between modules to enhance airflow.
Ensure that a slot blocker and a filler panel are installed in the empty
slots. Be aware that leaving an empty slot between modules changes
the length of inter-module cables, if any, and may also cause the
modules to be on different chassis backplane PXI_TRIG trigger bus
segments.
• Set the fan speed switch on the rear panel of the chassis to HIGH. If
this switch is set to AUTO, the module may not receive sufficient airflow
to provide adequate cooling. This can result in a thermal shutdown of
the M5302A module. Note that some chassis, when the fan speed
switch is set to AUTO, ramp up the fan speed if excess heat is detected
within the chassis. However, all chassis do not exhibit this behavior; so
setting the fan speed switch to HIGH ensures maximum cooling with all
chassis.
The Keysight Chassis have multiple air intakes. They are located at the
lower sides, lower front and bottom of the chassis.
Figure 6 Depiction of air flow in the M9018A chassis
M5302A PXIe LVDS Digital IO Modules Startup Guide