Dahua nvr4208-8p User Manual

386
7 FAQ
Questions
Solutions
NVR can not boot up
properly.
 Input power is not correct.
 Power connection is not correct.
 Power switch button is damaged.
 Program upgrade is wrong.
 HDD malfunction or something wrong with HDD ribbon.
 Seagate DB35.1, DB35.2，SV35 or Maxtor 17-g has compatibility
problem. Please upgrade to the latest version to solve this
problem.
 Front panel error.
 Main board is damaged.
NVR often automatically
shuts down or stops
running.
 Input voltage is not stable or it is too low.
 HDD malfunction or something wrong with the ribbon.
 Button power is not enough.
 Front video signal is not stable.
 Working environment is too harsh, too much dust.
 Hardware malfunction.
System can not detect
hard disk.
 HDD is broken.
 HDD ribbon is damaged.
 HDD cable connection is loose.
 Main board SATA port is broken.
There is no video output
whether it is one-channel,
multiple-channel or
all-channel output.
 Program is not compatible. Please upgrade to the latest version.
 Brightness is 0. Please restore factory default setup.
 Check your screen saver.
 NVR hardware malfunctions.
I can not search local
records.
 HDD ribbon is damaged.
 HDD is broken.
 Upgraded program is not compatible.
 The recorded file has been overwritten.
 Record function has been disabled.
Video is distorted when
searching local records.
 Video quality setup is too low.
 Program read error, bit data is too small. There is mosaic in the full
screen. Please restart the NVR to solve this problem.
 HDD data ribbon error.
 HDD malfunction.
 NVR hardware malfunctions.
Time display is not
correct.
 Setup is not correct
 Battery contact is not correct or voltage is too low.
 Crystal is broken.

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