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Chapter 2 Preparation before Installation DGS-8000 Series Hardware Installation Guide
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 Please carefully check for any potential danger in the working area, for example,
ungrounded power supply, unreliable grounding of the power supply and damp/wet
ground or floor.
 Find out the location of the emergency power supply switch in the room before
installation. First cut off the power supply in case of an accident.
 Be sure to make a careful check before you shut down the power supply.
 Do not place the equipment in a damp/wet location. Do not let any liquid enter the
chassis
Warning
1. Any nonstandard and inaccurate electrical operation can cause an accident
such as fire or electrical attack, thus causing severe even fatal damages to
human bodies and equipment.
2. Direct or indirect touch through a wet object on high-voltage and mains
supply can bring a fatal danger.
2.1.4
Static Discharge Damage
Prevention
Although much has been done in DGS-8000 to prevent static electricity, great damage may
be caused to the circuitry and equipment when the static electricity exceeds a certain limit.
In the communication network of the DGS-8000, electrostatic induction may come from the
following sources:
 External electric field produced by the high-voltage supply cable, lightning, etc;
 Internal systems such as the indoor floor and the entire structure.
To prevent damage from static electricity, you must pay attention to the following:
1) Properly ground the equipment.
2) Take dust prevention measures in the room.
3) Maintain an appropriate humidity.
4) Always wear an anti-static wrist strap when you touch any circuit board.
5) Try to hold a circuit board by its edges. Do not touch any components or the PCB.
6) Do not let any clothes touch a circuit board. An antistatic wrist strap can only prevent
human static electricity from damaging the circuit board, but cannot prevent any static
electricity on clothes.
Note
For the DGS-8010 switch, the anti-static wrist strap hole locates at the
lower-right and upper-right corners of the front panel.
For the DGS-8006 switch, the anti-static wrist strap hole locates at the
lower-right corner of the switch.
Warning
Check the resistance unit for the anti-static wrist strap. The resistance unit
between the human body and the ground shall be in the range of 1-10
Ω .