18
aTCA-80302PA/PD
6.5 Fan Tray IPMB Addresses
Geographic address pins H2 at the Fan Tray Backplane connector determine the hardware
addresses of the devices.
Table 5: Fan Tray IPMB Addresses
HW-Addr.
IPMB Addr.
Fan Tray 1 (left)
0x2E
0x5C
Fan Tray 2 (right)
0x2D
0x5A
6.6 Front Board Air Distribution
The airflow is measured with impedance boards acc. to the PICMG 3.0 R3.0
specification. Front board pressure drop: 37 Pa at 0,85 m³/min
Figure 8: Front Board Air Distribution
Table 6: Front Air Flow
Zone 1 [CFM] Zone 2 [CFM] Zone 3 [CFM] Zone 4 [CFM]
∑
[CFM]
Slot 1
17,9 (30,5
m³/h)
17,7 (30,1
m³/h)
16,8 (28,5
m³/h)
17,1 (29,0
m³/h)
69,4 (30,5
m³/h)
Slot 2
17,0 (28,9
m³/h)
16,8 (28,5
m³/h)
16,1 (27,4
m³/h)
16,1 (27,4
m³/h)
66,1 (28,9
m³/h)
∑
34,9 (59,3
m³/h)
34,5 (58,6
m³/h)
32,9 (59,9
m³/h)
33,2 (58,4
m³/h)
135,5 (230
m³/h)
