ADLINK CoreModule 920 - Manual (Page 26)

Chapter 2 Product Overview
20 Reference Manual CoreModule 920
Environmental Specifications
Table 2-6 provides the most efficient operating and storage condition ranges required for this module.
Thermal/Cooling Requirements
The CPU is the primary source of heat on the board. The CoreModule 920 is designed to operate at the
maximum speed of the CPU and requires an active heatsink for extended temperatures (optional). A passive
heatsink is available (optional) and allows maximum speed operation within the Standard temperature range.
The passive heatsink will allow operation in the Extended temperature range if the CPU speed is locked at
800MHz. To lock the CPU speed at 800MHz, use the Power Consumption setting field in the CPU/PPM
Configuration submenu of the “Advanced BIOS Setup Screen” on page 40 . See Figure 2-10 for height
measurements of the cooling assemblies.
Figure 2-10. Stack Heights of Cooling Assemblies
Table 2-6. Environmental Requirements
Parameter Conditions
Temperature
Standard
–20° to +70° C (–4° to +158° F)
Extended (Optional) –40° to +85° C (–40° to +185° F)
Storage –55° to +85° C (–67° to +185° F)
Humidity
Operating
5% to 90% relative humidity, non-condensing
Non-operating 5% to 95% relative humidity, non-condensing
NOTE All heights are given in inches.
2.53
1.45
0.22
0.38
Passive Heat Sink
Active
Heat Sink
Fan
Heat Spreader CM920_Cooling_Ht_b