Dahua nvr4208-8p User Manual

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Figure 4-88
4.13 Alarm
4.13.1 Detect Alarm
In the main menu, from Setting to Detect, you can see motion detect interface. See Figure 4-89.There
are three detection types: motion detection, video loss, tampering.
4.13.1.1 Motion Detect
After analysis video, system can generate a motion detect alarm when the detected moving signal
reached the sensitivity you set here.
Detection menu is shown as below. See Figure 4-89.
 Event type: From the dropdown list you can select motion detection type.
 Channel: Select a channel from the dropdown list to set motion detect function.
 Enable: Check the box here to enable motion detect function.
 Region: Click select button, the interface is shown as in Figure 4-90. Here you can set motion
detection zone. There are four zones for you to set. Please select a zone first and then left drag the
mouse to select a zone. The corresponding color zone displays different detection zone. You can
click Fn button to switch between the arm mode and disarm mode. In arm mode, you can click the
direction buttons to move the green rectangle to set the motion detection zone. After you completed
the setup, please click ENTER button to exit current setup. Do remember click save button to save
current setup. If you click ESC button to exit the region setup interface system will not save your
zone setup.
 Sensitivity: System supports 6 levels. The sixth level has the highest sensitivity.
 Anti-dither: Here you can set anti-dither time. The value ranges from 5 to 600s. The anti-dither time
refers to the alarm signal lasts time. It can be seem as the alarm signal activation stays such as the
buzzer, tour, PTZ activation, snapshot, channel record. The stay time here does not include the latch
time. During the alarm process, the alarm signal can begin an anti-dither time if system detects the
local alarm again. The screen prompt, alarm upload, email and etc will not be activated. For example,
if you set the anti-dither time as 10 second, you can see the each activation may last 10s if the local
alarm is activated. During the process, if system detects another local alarm signal at the fifth
second, the buzzer, tour, PTZ activation, snapshot, record channel will begin another 10s while the

Dahua nvr4208-8p Specifications

General

Operating System	Embedded LINUX
IP Camera Input	8 channel
Two-way Talk	1 channel Input, 1 channel Output, RCA
Interface	1 HDMI, 1 VGA
OSD	Camera title, Time, Video loss, Camera lock, Motion detection, Recording
Record Interval	1 ~ 120 min (default: 60 min), Pre-record: 1 ~ 30 sec, Post-record: 10 ~ 300 sec
Ethernet	1 RJ-45 Port (10/100/1000Mbps)
Max. User Access	128 users
Smart Phone	iPhone, iPad, Android
HDD Bays	1
Operating Temperature	-10°C ~ +55°C (+14°F ~ +131°F)
Main Processor	Dual-core embedded processor
Multi-screen Display	1/4/9
Video Detection and Alarm	Motion Detection, MD Zones: 396 (22 x 18), Video Loss, Camera Blank
Alarm input	4
Relay Output	2
Compression	H.265, H.264
Recording Resolution	Up to 8MP
Record Mode	Manual, Schedule (Regular, Continuous), MD (Video detection: Motion Detection, Camera Blank, Video Loss)
PoE	8 ports (IEEE802.3af/at)
Protocols	HTTP, TCP/IP, IPv4/IPv6, UPnP, RTSP, UDP, SMTP, NTP, DHCP, DNS, IP Filter, PPPoE, DDNS, FTP, Alarm Server, IP Search (Support Dahua IP camera, DVR, NVS, etc.)
USB Interface	2 USB2.0
Power Supply	AC 100~240V, 50/60 Hz
Power Consumption	NVR: <10W (without HDD), PoE: Max 25.5W for single port, 130W total
Operating Humidity	10%~90% RH