Fan And Heat Dissipation - Huawei OptiX OSN 8800 Hardware Description

OptiX OSN 8800/6800/3800
Hardware Description
Pin
6
7
8
Table 4-53 Pin assignment of the TOD interface
Pin
1
2
3
4
5
6
7
8

4.5.4 Fan and Heat Dissipation

Each OptiX OSN 8800 universal platform subrack has one fan tray assembly, which includes
eight independent fans and an air filter. The air filter can be drawn out and replaced.
Version Description
Only one functional version of the fan tray assembly is available, that is, TN18.
Functions and Features
Table 4-54 Functions of a fan tray assembly
Function
Basic function
Commissioning
control
Partitioned heat
dissipation
Issue 01 (2016-03-10)
Signal
N C
N C
N C
Signal
GND
GND
DCLS_IN0_N
GND
GND
DCLS_IN0_P
DCLS_OUT0_N
DCLS_OUT0_P
Description
Dissipates the heat generated by an subrack so that the subrack can
operate normally within the designated temperature range.
Auto Speed Mode: Implements automatic fan speed regulation,

depending on the subrack temperature.
Adjustable Speed Mode: You can manually adjust the fan

speed.
Each subrack is divided into four partitions to help provide
efficient heat dissipation. The fan speed in each partition is
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Copyright © Huawei Technologies Co., Ltd.
4 OptiX OSN 8800 Subrack
Function
Not connected
Not connected
Not connected
Function
Ground
Ground
1PPS negative
Ground
Ground
1PPS positive
TOD negative
TOD positive
81