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CT-310A Introduction
19
C
OOLING
S
PECIFICATIONS
C
OOLING
R
EQUIREMENTS
60 W/slot for a 5 °C Rise
80 W/slot for a 10 °C Rise
C
OOLING
M
ODES
High or low speed cooling modes can be selected by moving the Fan Speed
switch at the rear of the chassis. The power supply and modules are cooled by
separate fans.
A
IR
F
LOW
P
ATH
Air is drawn into the chassis from the rear and is pressurized below the cards.
The air is then distributed across all slots along the total length of each slot and
is exhausted through the top of the mainframe. When the mainframe is rack
mounted, allow approximately 2 inches (50 mm) of clearance at the top and rear
for proper airflow.
A
COUSTIC
N
OISE
High Speed Fan Mode < 40 dBA
Low Speed Fan Mode < 30 dBA
0.0
1.0
2.0
0
2.0
4.0
6.0
8.0
10.0
0.5
1.5
2.5
Pr
e
s
s
u
re
D
ro
p
-
m
m
H
2
O
Airflow - Liters/Sec
Fan
at H
ighS
pee
d
Fan a
t Low
Speed
* Covers all slots, unrestricted
F
IGURE
1-5:
C
OOLING
C
APACITY FOR
CT-310A
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