Esd Jack - Huawei SmartAX MA5600T Hardware Description
Multiservice access module
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Also See for SmartAX MA5600T:
- Configuration manual (1979 pages) ,
- Manual (105 pages) ,
- Hardware description (65 pages)
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SmartAX MA5600T/MA5603T/MA5608T Multi-service
Access Module
Hardware Description
Table 2-25 Settings of SW2-7 and SW2-8
SW2-8
ON
ON
OFF
OFF
NOTE
Fan Speed Adjustment
The fan tray provides fan speed adjustment in automatic mode and manual mode.
NOTE
l
l
2.3.6 ESD Jack
The ESD jack of the IEC subrack is on the left of the fan tray, which is used to connect the
ESD wrist strap to prevent device damage caused by electrostatic discharge.
The position of the ETSI subrack ESD jack, as shown in
Issue 24 (2018-07-30)
SW2-7
ON
OFF
ON
OFF
The IEC fan tray (FCBH) of the MA5600T must use speed adjustment policy 1.
The fan tray dissipates heat for the device to ensure that the device works at a normal temperature. When
the ambient temperature of the device exceeds its environment specifications, the system automatically
reports a high-temperature (or low-temperature) alarm.
Automatic mode
– Fan-control mode: The system automatically adjusts the fan speed according to the
board temperatures for energy saving.
– Control-board-control mode: Electric switches 7 and 8 of the SW2 DIP switch on
the monitoring board are set in four different ways to achieve four speed adjustment
policies (the IEC subrack supports only one policy).
NOTE
When the automatic mode is used, the device automatically switches between the fan-control
mode and control-board-control mode. When the control board and fan tray both function
properly, the default fan speed adjustment mode of the fan tray is control-board-control mode.
When the fan tray fails to communicate with the control board, the system automatically switches
to the fan-control mode.
Manual mode
Commands are executed to adjust the fan speed. The levels range from 0 to 6, level 0
being the lowest speed and level 6 being the highest speed.
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Speed Adjustment Mode
Temperature measurement at
the air intake vent
Temperature measurement at
the air exhaust vent
Temperature measurement at
the air intake vent
Temperature measurement at
the air intake vent (the fan stops
rotating)
2 Subrack and Chassis
Adjustment Strategy
Strategy 1
Strategy 2
Strategy 3
Strategy 4
Figure
2-11.
104
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