ZXG10 BS21 (V2.2) Compact Outdoor BTS for GSM Maintenance Manual
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Confidential and Proprietary Information of ZTE CORPORATION
cabinet before drilling. Take care to protect your eyes during drilling.
Flying metal scraps may harm your eyes. In addition, please promptly
clean and clear metal scraps after drilling.
Thunder
Danger:
Operations concerned with high-voltage, AC, iron tower or mast are
strictly forbidden in thunderstorms.
Thunderstorms would give rise to a strong electromagnetic field in the
atmosphere. So, the equipment should be earthed and protected in time
against lightning strike.
Antistatic
Notes:
The static electricity produced by the human body could damage the static-
sensitive components on the circuit board, such as large-scale integrated circuits
(IC).
Friction caused by human body’s activities is a source of accumulation of
static charge. When it is dry, the static voltage a human body carries may
be as high as 30kV, and may stay a long while. An operator with static
may cause damage to a device when in touch with it due to the discharge
from the device.
To avoid any damage to sensitive devices by human body static, an
operator should wear an antistatic wrist strap before touching devices,
plug-in boards, circuit boards and IC chips, and well ground the other end
of the antistatic wrist strap.
The cable between the wrist and the ground must be connected in series
with a more than 1M ohm resistance to protect operators from electric
shock. The static discharge from a 1M ohm-plus resistance is sufficiently
low.
Check the antistatic wrist strap regularly. Do not replace the cable of the
wrist strap with any other cable.
Static-sensitive board should not be in touch with any objects carrying
static electricity or easy to generate static electricity. For example, friction
of the package, conveyor box and conveyor belt made of insulation
materials will make the components statically electrified. These
components will discharge static electricity when touching human body or
the ground, thus being damaged.
Static-sensitive boards can only touch high quality discharging materials
such as static-protective packages. Use static-protective packages on
boards during storage and transportation.
