Huawei BBU3806 Installation Manual page 13

Installation Manual - Hardware Installation
BBU3806 WCDMA Base Band Unit
example, when rubbing on an object of insulating materials such as packing and
conveyer, an electrostatic-sensitive part takes electric charge. When touching a
human body or connect to the ground, the discharge may damage the part.
Electrostatic-sensitive boards or modules can only contact good conductors,
such as anti-static packing bags. Pack the board with an anti-static bag for stock
or transport.
Before connecting any measurement device to boards or modules, ground it to
discharge its static electricity.
Do not place boards or modules near strong DC magnetic field, for example, the
cathode ray tube of a scope. Keep the distance at 10 cm at least.
The damage caused by static electricity is accumulative in effect. If the damage
is slight, the part does not fail. However, as the damage occurs repeatedly, the
part may suddenly fail. The electrostatic discharging damage on the part may be
explicit or implicit. The implicit damage is not visible. However, it makes the part
vulnerable to over-voltage and high-temperature.
Figure 1 shows how to wear an anti-static wrist strap.
Figure 1 Wearing an anti-static wrist strap
3.8 Labels on Power Supply Cables
Attention:
Before connecting the cables, check the labels on them.
Plug of anti-static wrist strap
Huawei Technologies Proprietary
7
Safety Precautions