Thermal Considerations
100
AM4904 User Guide
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Figure 6-8: Impedance Curve AM4904-sRIO
The area between the front panel and the MCH backplane 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 pressure drop between inlet and oulet was measured (upper graph). The red curve represents an AMC ref-
erence board as defined by the CP-TA.
Figure 6-9: Airflow Distribution AM4904-Base
0
0,05
0,1
0,15
0,2
0,25
0,3
0,35
0,4
0,45
0,5
0
10
20
30
40
50
Air flow (CFM)
Pr
es
su
re
(
In
ch
H
2
O
)
Tes t Data
Reference
0,00
1,00
2,00
3,00
4,00
5,00
6,00
7,00
8,00
9,00
10,00
I/O Zone
Zone A
Zone B
Zone C
Zone D
Test Section
CF
M
Содержание AM4904
Страница 19: ...1KTC5520 EATX Chapter 1 Introduction www kontron com...
Страница 24: ...6KTC5520 EATX Chapter 2 Functional Description www kontron com...
Страница 65: ...47KTC5520 EATX Chapter 3 Operating the Unit www kontron com...
Страница 104: ...85KTC5520 EATX Chapter 4 Hardware Installation www kontron com...
Страница 109: ...90KTC5520 EATX Chapter 5 Power Considerations www kontron com...
Страница 113: ...Chapter 6 Thermal Considerations www kontron com...
Страница 121: ...1 Appendix A CM Configuration Options www kontron com...
Страница 128: ...1 Appendix B Getting Help www kontron com...
Страница 131: ...1KTC5520 EATX Appendix C Glossary www kontron com...