Cisco XR 12406 - Manual (Page 57)

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Cisco XR 12406 Router Installation Guide
OL-13831-01
Chapter 1 Cisco XR 12406 Router Overview
Line Cards
Environmental Monitoring and Alarms
The MBus module on each component monitors the environment of that
component as follows:
• Line cards and the route processor are monitored for temperature by two
temperature sensors mounted on each card. The MBus module makes voltage
adjustments through software for the +2.5 VDC, +3.3 VDC, and +5 VDC
DC-DC converters.
• Clock and scheduler cards and switch fabric cards are monitored for
temperature by two temperature sensors mounted on each card. The MBus
module makes voltage adjustments through software for the +2.5 VDC and
+3.3 VDC converters.
• The MBus module on the alarm card makes voltage adjustments for +5 VDC.
• Environmental monitoring includes voltage monitoring, temperature
monitoring, and sensing for the blower module fans.