ADLINK cPCI-3620 - Manual (Page 85)

BIOS Setup Utility 73
cPCI-3620
8.3.5 Thermal Configuration
Critical Trip Poin
Sets the temperature of the ACPI critical trip point at which the
OS will shut down.
Passive Trip point
Sets the temperature of the ACPI passive trip point at which the
OS will begin throttling the processor.