It's very possible that the chassis is running above the specified operating temperature. For the CV-10G-S8 (and -S2) module the operating temperature must be less than 30 degrees C. Please refer to the Spirent TestCenter Hardware Reference.
We are typically concerned with the following temperature sensors: • BP1-1 is the air inlet temp in the center of the inlet plenum • BP1-2 is the card outlet temp on the right side as viewed from the front of the chassis • BP1-3 is the card outlet temp on the left side as viewed from the front of the chassis.
One way to check this is to search the bll.log for "BP1-1". Here's what a search might look like. Note that this indicates that the chassis is operating well above the specified operating temperatures for the chassis.
10:33:42.275 INFO 2905566096 - fmwk.bll.core.equip - chassis "chassis-IP" temp sensor = BP1-1, status = 1, current = 42 10:33:42.275 INFO 2905566096 - user.equipment - chassis "chassis-IP" temperature sensor BP1-1 has reached warning level. 10:33:42.275 INFO 2905566096 - fmwk.bll.core.equip - chassis "chassis-IP" temp sensor = BP1-2, status = 0, current = 51 10:33:42.275 INFO 2905566096 - user.equipment - chassis "chassis-IP" temperature sensor BP1-2 is now at normal level. 10:33:42.275 INFO 2905566096 - fmwk.bll.core.equip - chassis "chassis-IP" temp sensor = BP1-3, status = 0, current = 49
Note that another effect of running the CV-10G modules too hot is the error message "SAL is not connected to a Test Session or a Server Manager". Please see SOL10853.