AM4100
Thermal Considerations
ID 36126, Rev. 2.0
Page 7 - 9
P R E L I M I N A R Y
7.3.4
Airflow Paths
The area between the front panel and the AMC Card-edge connector is divided into five zones,
one I/O zone and four uniform thermal zones, A, B, C, and D. The PICMG AMC.0 Specification
states that the uniformity of the airflow paths’ resistance should provide an impedance on the
A, B, C, and D zones that is within ± 25% of the average value of the four thermal zones.
The following figure shows the thermal zones of a Mid-size AM4100.
Figure 7-7: Thermal Zones of the Mid-Size AM4100 Module
The following table indicates the deviation of the airflow rate on a Mid-size AM4100 module.
Table 7-2:
Deviation of the Airflow Rate on a Mid-Size AM4100
VOLUMETRIC
FLOW RATE [CFM]
DEVIATION OF THE AIRFLOW RATE
ZONE A
ZONE B
ZONE C
ZONE D
10
-0.58%
-0.58%
1.73%
-0.58%
20
0.00%
0.00%
1.16%
-1.16%
30
0.00%
0.00%
1.16%
-1.16%
40
0.00%
0.00%
1.16%
-1.16%
Note ...
The Mid-size AM4100 module has an airflow rate deviation of max. ± 1.8% of
the average value of the four thermal zones (max. ± 25% is allowed).
Positive deviation means increased airflow.
Negative deviation means decreased airflow.
Note ...
The Mid-size AM4100 module provides an open area of 43%. According to the
PICMG AMC.0 Specification, an open area of 20 to 70% perpendicular to the
airflow path is recommended.
open area
I/O Zone
32.8
Zone A
34
Zone B
34
Zone C
34
Zone D
34
Summary of Contents for AM4100
Page 19: ...AM4100 Introduction ID 36126 Rev 2 0 Page 1 1 Introduction Chapter 1 1 P R E L I M I N A R Y...
Page 57: ...AM4100 Installation ID 36126 Rev 2 0 Page 3 1 Installation Chapter 1 3 P R E L I M I N A R Y...
Page 65: ...AM4100 Configuration ID 36126 Rev 2 0 Page 4 1 Configuration Chapter 1 4 P R E L I M I N A R Y...
Page 89: ...AM4100 NetBootLoader ID 36126 Rev 2 0 Page 5 1 NetBootLoader Chapter 1 5 P R E L I M I N A R Y...
