Dahua nvr4208-8p User Manual

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attractive if the value is too low. The recommended value ranges
from 40 to 60.
Gain
The gain adjust is to set the gain value. The smaller the value is,
the low the noise is. But the brightness is also too low in the dark
environments. It can enhance the video brightness if the value is
high. But the video noise may become too clear.
White level
It is to enhance video effect.
Color mode
It includes several modes such as standard, color. You can
select corresponding color mode here, you can see hue,
brightness, and contrast and etc will adjust accordingly.
Auto Iris
It is to enable/disable auto iris function.
Flip
It is to switch video up and bottom limit.
This function is disabled by default.
Mirror
It is to switch video left and right limit.
This function is disabled by default.
BLC
Mode
BLC
The device auto exposures according to the environments
situation so that the darkest area of the video is cleared
WDR
For the WDR scene, this function can lower the high bright
section and enhance the brightness of the low bright section. So
that you can view these two sections clearly at the same time.
The value ranges from 1 to 100. When you switch the camera
from no-WDR mode to the WDR mode, system may lose several
seconds record video.
HLC
After you enabled HLC function, the device can lower the
brightness of the brightest section according to the HLC control
level. It can reduce the area of the halo and lower the brightness
of the whole video.
Off
It is to disable the BLC function. Please note this function is
disabled by default.
Profile
It is to set the white balance mode. It has effect on the general
hue of the video. This function is on by default.
You can select the different scene mode such as auto, sunny,
cloudy, home, office, night, disable and etc to adjust the video to
the best quality.
 Auto: The auto white balance is on. System can auto
compensate the color temperature to make sure the vide
color is proper.
 Sunny: The threshold of the white balance is in the sunny
mode.
 Night: The threshold of the white balance is in the night
mode.
 Customized: You can set the gain of the red/blue channel.
The value reneges from 0 to 100.
Day/Night
It is to set device color and the B/W mode switch. The default
setup is auto.
 Color: Device outputs the color video.
 Auto: Device auto select to output the color or the B/W

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