DHG07-48/42 small cell power user manual<A>
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Before connecting a load (powered device) cable or battery cable, the polarity of the cable and
interface terminals must be strictly checked.
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It is strictly forbidden to wear conductive objects such as watches, bracelets, bracelets and rings
during operation.
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Insulation tools must be used during operation.
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When operating with power, pay attention to the impact of the operating space on live working. If
necessary, set insulation protection measures in the operating area to avoid the risk of short
circuit when the tool is stuck or disconnected.
Thunderstorm
It is strictly forbidden to carry out high voltage and alternating current
operation under thunderstorms.
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In thunderstorms, strong electromagnetic fields are generated in the atmosphere. To avoid
damage to the equipment caused by lightning strikes, ensure that the equipment is well
grounded.
Static electricity
Static electricity generated by the human body can damage static-sensitive
components on the board, such as large-scale integrated circuits (ICs).
Before touching the device, circuit board or IC chip, etc., must wear an
anti-static wrist strap and ground the other end of the ESD-preventive wrist.
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When holding a circuit board, you must hold the component part of the edge of the board. Do not
touch the chip with your hand.
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The removed circuit board must be packaged in an antistatic package and stored or transported.
Liquid proof, explosion proof
This product should be placed in an area away from liquids. It is forbidden to
be installed under the leaky position such as vents, air conditioning ports, and
the data room outlet windows to prevent liquid from entering the device and
causing short circuit.
Do not place the device in a flammable, explosive, corrosive gas or smog
environment. Do not perform any operation in this environment.
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Do not flush the electrical components inside and outside the equipment with water.
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When you notice water, moisture, or condensation in the cabinet, turn off the power immediately.
When operating in a humid environment, conductive liquid such as water should be strictly
prevented from entering the equipment.
Battery safety
Before you perform battery work, you must read the battery's instruction
manual carefully, follow the safety precautions specified, and the correct
connection method for the battery.
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The environment of the battery is required to be free from direct sunlight or rain, dry and well
ventilated, free of corrosive gases, away from fire and organic solvents.
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Excessive battery temperature can cause battery deformation, damage, or electrolyte spillage.
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The battery has extremely high electrical energy, and unregulated operation can be a serious
hazard. The safety precautions specified in the battery operation must be strictly followed during
