Manualshelf

Operating instructions

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Temperature Monitoring
Overview
Temperatures are reported to the user in degrees Celcius (° C) and degrees Fahrenheit (° F).
Host Card Monitoring
The die temperature of the main components on the Host card are monitored, and reported to an accuracy of ±2 ° C.
A host card temperature alarm threshold can be set that, if exceeded, causes a ‘System Over Temperature’ Alarm to be generated.
Option Card Monitoring
General
Option cards monitor the die temperature of their main components, and report these temperatures to an accuracy of ±2 ° C. If an
option card reports die temperatures, it allows an alarm threshold to be defined for each temperature, which if exceeded causes an
alarm to be generated.
VCMs
The controlling processor monitors the core temperatures of the main components and passes this information back to the host card
via the back plane for monitoring.
Temperature thresholds can be set to cause a warning or an alarm. The warning level is configurable by the user, whereas the alarm
level is hard coded.
Fans
The fans fitted to the chassis are speed controllable, and are a user configurable parameter fan speed control.
See Basic Fault Scenarios > Fans Not Working/Overheating for further information.
SNTP
Overview
The unit can obtain the current time from a network time server using SNTPv4 (RFC 4330) and is capable of working with Microsoft
Windows Time, (SNTP as defined in RFC 1767).
SNTP Time Server
If an SNTP Time Server is selected, and communications are established with it, then the unit uses the time obtained to correct the
system’s real time clock, and the user cannot set the clock.
If a time server has been configured, but it fails to respond, then an ‘SNTP Server Failed To Respond’ alarm is generated.
Parameter Setting Description
Fan speed control
Full speed The fans run at the configured speed.
Auto speed Fan speed is related to the temperatures measured in the chassis.
© Ericsson AB 2011. All rights reserved
© Ericsson AB 2011. All rights reserved
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