4
Interfaces
As
shown
in
the
rear
view,
the
following
table
describes
interfaces
on
the
rear
panel.
Table
2
‐
2
Interfaces
No
Item
Description
Function
and
Instructions
RS
‐
485/422
Interface
Compatible
with
RS485
and
RS422
serial
ports
and
RJ45
connectors
Connecting
to
RS485
or
RS422
devices
AC
100V
‐
240V
AC
power,
100V
‐
240V
AC
Connecting
to
the
power
supply
POWER
Power
switch
Turn
on/off
device
when
connected
to
power
Note:
To
protect
hard
disks,
please
soft
‐
shut
down
your
equipment
before
turning
off
the
power.
RS
‐
485
Interface
RS485
serial
port,
Phoenix
connector
Connecting
to
RS485
devices
ALARM
IN
Boolean
input,
Phoenix
connector
Connecting
to
alarm
input
device
ALARM
OUT
Relay
output,
Phoenix
connector
Connecting
to
alarm
output
device
GROUND
Equipment
grounding
Ground
cable
AUDIO
OUT
Analog
audio
output,
BNC
interface,
Mono,
1.4V
(P
‐
P),
and
300
Ω
Connecting
to
an
audio
output
device
AUDIO
IN
Analog
audioinput,
NC,
single
channel,2V
(P
‐
P),10K
Ω
Connecting
to
an
audio
input
device
GROUND
z
Equipment
grounding
Ground
cable
HDMI
High
‐
definition
digital
audio
and
video
output,
HDMI
interface
Connecting
to
HDMI
display
device
1
2
3
4
5
6
7