back
up
cached
videos
through
a
backup
server
managed
by
the
central
server.
The
exported
or
backed
up
video
files
can
be
played
on
the
webpage
of
the
central
server.
2
Device
Installation
Precautions
Checking
Device
Components
Unpack
the
container
and
remove
the
items
out
carefully.
Check
items
against
the
packing
list
and
ensure
all
items
listed
are
included
in
the
container.
WARNING!
Do
not
remove
the
dismantlement
‐
preventive
seal
from
the
chassis
cover
of
an
DVS4000
without
permission.
If
you
want
to
open
the
chassis,
contact
the
local
agent
of
our
company
for
help.
Otherwise,
we
shall
not
be
held
liable
for
any
consequence
caused
thereby.
Checking
the
Installation
Environment
When
installed
outdoors,
the
DVS4000
must
be
fixed
in
an
outdoor
protective
box
while
meeting
outdoor
lightning
protection
and
grounding
requirements.
z
Ensure
that
appropriate
lightning
protection
facilities
are
chosen
for
device
power
supply,
audio
and
video
signals,
and
the
RS
‐
485
port.
z
Ensure
that
the
device
is
correctly
grounded
through
a
grounding
screw.
For
details,
refer
to
DVS/DC
Cable
Connection
Guide
.
When
installed
indoors,
the
DVS4000
must
also
meet
lightning
protection
and
grounding
requirements
by
using
the
same
methods
as
described
above.
9
