Safety Precautions
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DS1103 Hardware Installation and Configuration March 2004
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Safety Precautions for Using Expansion
Boxes
To avoid damage to the expansion box and to achieve safe and
trouble-free operation, the following guidelines have to be observed:
Installing ■ Before doing any installation work on an expansion box:
• Make sure that the PC is turned off and no external devices are
connected to the box.
• Unplug all external connectors from all boards already installed,
because these connectors might conduct dangerous high
voltage into the chassis or parts of the circuit.
Grounding ■ If there is any chance that external devices connected to the
boards might conduct dangerous high voltage into the chassis,
never unplug the power cord, which is the system’s protective
ground, unless all other connectors are unplugged.
■ The power cord must be plugged into a grounded wall outlet only.
Overheating, dust,
foreign objects
■ To prevent the system from overheating, do not block the air vents
or place the unit too close to a wall or other obstacle.
■ Do not expose the system to excessive dust or moisture.
■ Guard against foreign objects (staples, etc.) falling or blowing into
the unit, or liquids being spilled into it.
Turning expansion
boxes on and off
■ Before you work with an expansion box, you should always turn
on the expansion box before the host PC.
■ Do not switch off the expansion box while the host PC is still
running. This might lead to unpredictable errors.
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