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Operating Instructions
Environmental Monitor
3
Temperature Monitoring Function
3-2
An environmental monitoring function to track enclosure
temperatures and operating voltages is incorporated into the
Modular Chassis system design. The extent of coverage can be
specified when the equipment is ordered.
In the Modular Chassis, power supply outputs and temperatures
are always monitored. A backplane temperature sensor is available
as an option; with the sensor installed, card cage temperatures are
monitored as well.
The XR900 chassis has no power supply monitoring, but is
equipped with a backplane temperature sensor. As long as the RJ45
cable is installed, XR900 temperatures are monitored along with
Modular Chassis power supply voltages/temperatures and
(optionally) card cage temperatures.
The Overtemperature LED on the front panel of the Modular
Chassis indicates the presence of excessive operating temperatures
within one or more of the following subassemblies:
The Modular Chassis power supply
The Modular Chassis card cage (if an optional backplane
thermal sensor is installed)
The integral and/or standalone SCSI peripheral expansion
enclosures (if installed)
In addition, the XR900 enclosure has an Overtemperature LED of its
own on the back panel.
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