User's Manual
31
XVR78xxS-4KL-X-LP-V2
Figure 3-17 Rear panel
Table 3-16 Rear panel description
No. Port Name Function
1 Audio output port
Outputs the analog audio signal to the devices such as
the sound box.
2 Video output port Connect to video output devices such as TV.
3 Audio input port (MIC IN)
Two-way talk input port which receives the analog
audio signal output from the devices such as
microphone, pickup.
4
Audio output port (MIC
OUT)
Two-way talk output port which outputs the analog
audio signal to the devices such as the sound box.
5 Audio input port
Receives the analog audio signal output from the
devices such as microphone.
6
Alarm input port 1–16
●
Four groups of alarm output ports (Group 1: port 1
to port 4; Group 2: port 5 to port 8; Group 3: port 9
to port 12; Group 4: port 13 to port 16). These ports
receive the signal from the external alarm source.
There are two types; NO (Normally Open) and NC
(Normally Closed).
●
When your alarm input device is using external
power, please make sure the device and the DVR
have the same ground.
Alarm output port 1–5
(NO1–NO5; C1–C5; NC5)
●
Five groups of alarm output ports. (Group 1: port
NO1–C1, Group 2: port NO2–C2, Group 3: port
NO3–C3, Group 4
：
port NO4–C4, Group 5: port
NO5, C5, NC5). These ports output alarm signal to
the alarm device. Please make sure power supply to
the external alarm device.
●
NO: Normally open alarm output port.
●
C: Alarm output public end.
●
NC: Normally closed alarm output port.
RS-485 communication
port
You can connect to the control devices such as speed
dome PTZ. RS-485_A port is connected by the cable A
and RS-485_B is connected to the cable B.
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