User`s manual

DA-681 Series Hardware User’s Manual Hardware Installation
Note that four screws are required to attach the DA-681 to the rack. Use two screws on the
left side and two screws on the right side.
As a final check, make sure that the four screws are firmly attached to the rack.
Wiring Requirements
The following common safety precautions should be observed before installing any electronic
device:
y Use separate paths to route wiring for power and devices. If power wiring and device wiring
paths must cross, make sure the wires are perpendicular at the intersection point.
y You can use the type of signal transmitted through a wire to determine which wires should be
kept separate. The rule of thumb is that wiring that shares similar electrical characteristics can
be bundled together.
y Keep input wiring and output wiring separate.
y When necessary, it is strongly advised that you label wiring to all devices in the system.
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