User's Manual
24
Name
Function
USB port
USB port. Connect to mouse, USB storage device,
USB burner and etc.
HDMI
High Definition Media
Interface
High definition audio and video signal output
port. It transmits uncompressed high definition
video and multiple-channel data to the HDMI
port of the display device. HDMI version is 1.4b.
MIC IN
Audio input port
Bidirectional talk input port. It is to receive the
analog audio signal output from the devices such
as microphone, pickup.
MIC OUT
Audio output port
Audio output port. It is to output the analog
audio signal to the devices such as the sound
box.
●
Bidirectional talk output.
●
Audio output on 1-window video monitor.
●
Audio output on 1-window video playback.
1–16
Alarm input port 1–16
●
There are four groups. The first group is from
port 1 to port 4, the second group is from
port 5 to port 8, the third group is from 9 to
12, and the fourth group is from 13 to 16.
They are to receive the signal from the
external alarm source. There are two types;
NO (normal open)/NC (normal close).
●
When your alarm input device is using
external power, please make sure the device
and the NVR have the same ground.
Ground
Alarm input ground end.
NO1–NO5
Alarm output port 1–5
●
5 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). Output alarm signal to
the alarm device. Please make sure there is
power to the external alarm device.
●
NO: Normal open alarm output port.
●
C: Alarm output public end.
●
NC: Normal close alarm output port.
C1–C5
NC5
A
RS-485
communication port
RS485_A port. It is the cable A. You can connect
to the control devices such as speed dome PTZ.
B
RS485_B. It is the cable B. You can connect to the
control devices such as speed dome PTZ.
CTRL (CTRL 12V)
—
Controller 12V power output. It is to control the
on-off alarm relay output. It can be used to
control the device alarm output. At the same
time, it can also be used as the power input
source of some devices such as the alarm
detector.
Summary of Contents for NVR41-4KS2 Series
Page 1: ...Dahua Network Video Recorder User s Manual ZHEJIANG DAHUA VISION TECHNOLOGY CO LTD V1 1 0 ...
Page 74: ...User s Manual 58 Figure 2 79 Alarm input port Figure 2 80 Alarm input port ...
Page 101: ...User s Manual 85 Figure 3 41 Step 9 Secure the HDD bracket and put the top cover back ...
Page 132: ...User s Manual 116 Figure 4 19 Modify IP Step 3 Set parameters See Table 4 5 ...
Page 147: ...User s Manual 131 Figure 4 29 Period Step 3 Set record type See Figure 4 30 ...
Page 452: ...User s Manual ...
