Engineer onsite found that when checked the CXL board temperature, the LU and XC unit has different temperature, the deviation was about 10 degree centigrade.
Used command :cfg-get-bdtemp to query the XC unit temperature, it show the current temperature is about 51.5 degree centigrade.
#9-561:szhw [OSN-2014 ][2009-10-09 14:11:35+03:00]>
Total records :1
But after queried the Lu performance, the OSPITMPCUR showed that the OSPITMPCUR is 62.5 degree centigrade.
Monitored Object Event Monitor Period Start Time Value
OSN-2014-4-Q1SL4-1(SDH-1)-OSPI:1 OSPITMPCUR(Cels.) 15-Minute 2009-10-09 15:00:00 62.50
Why the deviation was about 10 degree centigrade?
Change the faulty CXL board. And the temperature is normal at the end.
The reason is that when we use command ":cfg-get-bdtemp" to query the XC unit temperature, the result feeds back the XC unit CPU part temperature. Only the XC board support this temperature query function.
The normal temperature is about 60-70 degree centigrade.
The Lu OSPITMPCUR from the Lu performance is the laser surface temperature. For CXL board always uses SFP optical module, the normal laser temperature
is about 40 degree centigrade. For digital control module, the laser surface temperature is about 25 degree centigrade.