42
Table
3
‐
5
Description
of
Important
Parameters
Involved
in
Preview
Window
Configuration
Configuration
Type
Parameter
Description
Basic
configuration
Default
Screen
Number
The
default
number
of
screens
of
preview
images
output
on
the
port
Note:
If
you
switch
to
another
screen
splitting
mode
during
preview
or
polling
switching,
the
preview
interface
is
restored
to
the
default
number
of
screens
upon
the
next
startup
of
the
device.
Auto
‐
switch
Interval
Time
interval
between
the
current
preview
screen
and
the
next
preview
screen
during
polling
switching
Enable
Auto
‐
switch
Whether
to
enable
or
disable
the
polling
switching
function
Note:
The
polling
switching
state
in
the
right
‐
click
menu
is
synchronized
to
the
enabling
or
disabling
of
the
polling
switching
function.
Substream
First
Whether
secondary
streams
are
preferred
in
multi
‐
pane
mode
When
this
function
is
enabled,
in
multi
‐
pane
preview
mode,
secondary
streams
are
previewed
for
a
camera
with
dual
streams
whereas
primary
streams
are
previewed
for
a
single
‐
stream
camera.
View
configuration
Screen
splitting
mode
The
number
of
screens
of
preview
images
output
on
the
port
Cameras
corresponding
to
the
panes
Cameras
that
correspond
to
the
panes
in
the
preview
interface
output
on
the
port.
Each
preview
screen
will
be
switched
according
to
this
configuration
in
the
corresponding
screen
splitting
mode
during
polling
switching.
Note:
z
After
you
change
the
camera
that
corresponds
to
a
certain
pane
in
a
certain
screen
splitting
mode,
the
camera
that
correspond
to
the
pane
in
the
other
screen
splitting
modes
is
synchronously
changed.
z
The
cameras
that
correspond
to
any
two
panes
in
the
same
screen
splitting
mode
with
the
same
output
port
cannot
be
the
same.
z
After
a
certain
channel
is
unbound,
information
about
the
camera
is
deleted
from
all
panes
on
all
output
ports.
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