16
1:
PC
2:
Network
cable
3:
Serial
cable
Connecting
a
Groundcable
To
ensure
personal
and
equipment
safety(lightning
protection
and
resistance
against
interference),
ground
the
device
properly.
The
ground
cable
must
not
exceed
30m
and
provide
a
grounding
resistance
of
less
than
5
Ω
.
For
specific
requirements,
refer
to
the
standards
for
the
IEC61024
series.
As
shown
in
the
following
figure
(NVR516
‐
128
‐
IN
as
an
example),
connect
one
end
of
the
ground
cable
to
the
ground
terminal
of
the
device
and
the
other
end
to
a
reliable
grounding
point.
1:
Ground
terminal
2:
Ground
cable
5
Switching
On/Off
the
Device
Check
Before
Power
‐
On
To
avoid
bodily
injury
or
damage
to
components,
check
the
following
items
before
turning
off
the
power.
1
2
