Huawei BBU3806 Installation Manual page 12

Installation Manual - Hardware Installation
BBU3806 WCDMA Base Band Unit
Protect your eyes from flying metal filings.
Prevent metal filings from falling into the cabinet.
Drill at proper places to avoid affecting the electromagnetic shielding
performance of the cabinet.
After drilling, remove all the metal filings at once.
3.6 Thunderstorm
Danger:
Never work on high-voltage and AC or work on steel towers and masts in
thunderstorms.
Thunderstorms generate powerful electromagnetic fields in air. Ground the equipment
properly to avoid thunder stroke.
3.7 Static Electricity
Caution:
Static electricity generated on human body may damage the electrostatic-sensitive
parts on the circuit board, such as large-scale integrated circuit (IC).
In dry climate, the electrostatic charge carried by the human body may be up to
30 kV. The charge may remain on the human body for rather a long period.
When an operator with electrostatic charge contacts a part, the electric discharge
may damage the part.
Before contacting any equipment, hand-held plug-in boards, circuit boards or IC
chips, put on an anti-static wrist strap with one end well grounded to protect
sensitive parts from static electricity on your body.
Before touching any board or module, discharge the static electricity in your body
by wearing an anti-static wrist strap.
Add a resistance over 1M
yourself from electric shock. The resistance over 1M
electrostatic voltage discharging. Check the anti-static wrist strap regularly.
Never replace the cable of the anti-static wrist strap with other cables.
Prevent electrostatic-sensitive boards or modules from touching the object with
static electricity or the object that may easily generate static electricity. For
between the strap and the grounding point to protect
Huawei Technologies Proprietary
6
Safety Precautions
is reliable in terms of