Installation guide

You should also pay attention to the following:
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.
NOTE: Do not run signal or communications wiring and power wiring in
the same wire conduit. To avoid interference, wires with different signal
characteristics should be routed separately.
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 separated.
y It is strongly advised that you label wiring to all devices in the system when
necessary.
Grounding the VPort 251
Grounding and wire routing help limit the effects of noise from
electromagnetic interference (EMI). Before connecting devices, run the ground
connection from the grounding point on the VPort to the grounding surface.
ATTENTION
This product is intended to be mounted to a well-grounded
mounting surface such as a metal panel.
Wiring the Relay Output
The VPort 251 has one set of
relay outputs, labeled RELAY. 3
contacts on the 5-pin terminal
block on the VPort's top panel are
used for the relay output.
The relay output can be used for the following:
y System alarm, such as for network disconnection
y Event alarm, such as for VMD (video motion detection), video loss, or
digital inputs
The maximum current and power capacity of the relay output is 24
VDC @ 1A. Please be careful not to exceed this power
specification.
Before connecting the VPort to the DC/AC power inputs, make
sure that the DC power source voltage is stable.
Wiring the Digital Inputs
The VPort 251 has one digital input channel, labeled DI. Two contacts on the
5-pin terminal block on the VPort's top panel are used to connect to this DI.
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