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Network Video Recorder
User's Manual
ZHEJIANG DAHUA VISION TECHNOLOGY CO., LTD.
V2.3.5

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Summarization of Contents

Foreword
General
Introduces installation, functions, and operations of NVR devices.
Safety Instructions
Explains signal words used in the manual for hazard indication.
Revision History
Details versions, revision content, and release times.
Important Safeguards and Warnings
Transportation Requirements
Guidelines for transporting the device under specific humidity and temperature conditions.
Storage Requirements
Guidelines for storing the device under specific humidity and temperature conditions.
Operation Requirements
Lists critical operational guidelines like avoiding sunlight, dust, and proper ventilation.
Installation Requirements
Details safety and electrical compliance for device installation.
Introduction
Overview
Describes the NVR's functions like local live view, storage, and remote management.
Features
Lists key features including AI functions, smart playback, cloud upgrade, and real-time surveillance.
Front Panel and Rear Panel
Front Panel
Describes the front panel layout of various NVR models.
Rear Panel
Describes the rear panel of various NVR models.
Alarm Connection
Alarm Port
Details the layout and functions of the NVR's alarm port.
Alarm Input Port
Instructions on connecting alarm input devices to the NVR.
Alarm Output Port
Information on external alarm devices and relay specifications.
Alarm Relay Specifications
Provides technical specifications for alarm relay models.
Two-way Talk
Device-end to PC-end
Steps for connecting device audio output to PC audio input for two-way talk.
PC-end to the Device-end
Steps for connecting PC audio output to device audio input for two-way talk.
Device Installation
Device Installation Diagram
Provides a flowchart for the NVR installation process.
Checking Unpacked NVR
Checklist for verifying NVR package contents for damage or missing items.
HDD Installation
Instructions for installing Hard Disk Drives (HDDs) into the NVR.
Connection Sample
NVR21-W-4KS2/NVR21HS-W-4KS22
Shows typical connections for NVR21-W-4KS2/NVR21HS-W-4KS22.
NVR52-4KS2/NVR52-8P-4KS2/NVR52-16P-4KS2/NVR52-24P-4KS2/NVR52-8P-4KS2E/NVR52-16P-4KS2E Series
Shows typical connections for NVR52-4KS2/NVR52-8P-4KS2...series.
NVR58-I/NVR58-I/L/NVR48-I Series
Shows typical connections for NVR58-I/NVR58-I/L/NVR48-I series.
NVR54-I/NVR54-I/L/NVR44-I
Shows typical connections for NVR54-I/NVR54-I/L/NVR44-I.
NVR52-16P-I/NVR52-16P-I/L/NVR52-8P-I/NVR52-8P-I/L/NVR42-16P-I Series
Shows typical connections for NVR52-16P-I...series.
NVR4216-I Series
Shows typical connections for NVR4216-I series.
NVR21-W-4KS2 Series
Lists ports for NVR21-W-4KS2 series.
NVR21HS-W-4KS2
Lists ports for NVR21HS-W-4KS2.
NVR21-I/NVR21-I2 Series
Lists ports for NVR21-I/NVR21-I2 series.
NVR22-I/NVR22-I2 Series
Lists ports for NVR22-I/NVR22-I2 series.
NVR21-P-I/NVR21-P-I2 Series
Lists ports for NVR21-P-I/NVR21-P-I2 series.
NVR22-P-I/NVR22-P-I2 Series
Lists ports for NVR22-P-I/NVR22-P-I2 series.
NVR21-8P-I/NVR21-8P-I2 Series
Lists ports for NVR21-8P-I/NVR21-8P-I2 series.
NVR22-8P-I/NVR22-8P-I2 Series
Lists ports for NVR22-8P-I/NVR22-8P-I2 series.
NVR22-16P-I/NVR22-8P-I2 Series
Lists ports for NVR22-16P-I/NVR22-8P-I2 series.
NVR21HS-I/NVR21HS-I2 Series
Lists ports for NVR21HS-I/NVR21HS-I2 series.
NVR21HS-P-I/NVR21HS-P-I2 Series
Lists ports for NVR21HS-P-I/NVR21HS-P-I2 series.
NVR21HS-8P-I/NVR21HS-8P-I2 Series
Lists ports for NVR21HS-8P-I/NVR21HS-8P-I2 series.
NVR4208-8P-I Series
Lists ports for NVR4208-8P-I series.
NVR4216-I Series
Lists ports for NVR4216-I series.
NVR608-4KS2/NVR608H-XI/NVR608RH-XI Series
Shows rear panels of NVR608-4KS2/NVR608H-XI/NVR608RH-XI series.
NVR616-4KS2/NVR616-XI Series
Shows rear panels of NVR616-4KS2/NVR616-XI series.
NVR624-XI Series
Shows rear panels of NVR624-XI series.
Starting the Device
Background Information
Safety and power connection precautions before starting the device.
Procedure
Step-by-step guide to starting the NVR device.
Local Operations
Initialization
Guides through the initial setup process, including region, time, and password settings.
Startup Wizard
Assists in quick initial configuration of the device upon first login.
Login
Instructions on how to log in to the NVR device for local operations.
Main Menu
Overview of the main menu structure and its function tiles.
Quick Operation Bar
Explains how to use shortcut icons on the main menu for quick access.
Live View
Describes how to view live video streams from connected cameras.
Shortcut Menu
Accesses main menu, playback, view split, and PTZ settings via right-click menu.
AI Live View Mode
Displays human face, vehicle, and non-motor vehicle information, supporting playback and feature attributes.
Fisheye
Functionality for de-warping fisheye camera video for proper viewing.
Temperature Monitoring
Displays instant temperature from connected cameras with temperature detection.
Shortcut Menu to Add Camera
Allows adding cameras directly from the live page using a shortcut icon.
Smart Tracking
Tracks targets manually or automatically, available on multi-sensor panoramic cameras with PTZ.
Camera
Initializing Remote Devices
Instructions on changing login password and IP address of remote devices during initialization.
Adding Remote Devices
Add remote devices to NVR for receiving, storing, and managing video streams.
Changing IP Address of Remote Device
Procedures for changing IP addresses of connected and unconnected cameras.
Configuring Image Settings
Set network camera parameters for optimal video effect in different environments.
Configuring Overlay Settings
Set parameters for overlaying information like time and channel on live view.
Privacy Masking
Mask specific areas of the video image for privacy protection.
Configuring Encoding Settings
Set video bit stream and image parameters.
Modifying Channel Name
Customize the names of connected cameras.
Checking the PoE Status
Check the status of PoE ports and configure enhancement modes.
Updating Remote Devices
Update firmware of connected network cameras via online or file update.
Viewing Remote Device Information
View connection and alarm status of corresponding channels.
Recording Management
Recording Schedule
Configure automatic recording of videos and snapshots at scheduled times.
Search and Playback
Search for and play back recorded files on the NVR.
Playback
Search and play back recorded videos, images, or video clips.
Smart Search Playback
Analyzes motion detection zones during playback to provide analysis results.
AcuPick
Searches for targets using AcuPick technology.
Clipping Videos
Clip footage from recorded videos and save to USB device.
Backing Up
Back up recorded videos, images, or clips to a USB storage device.
File List
Manage files of the selected channel, including play, search, lock, export, and backup.
Tag Playback
Add tags to mark important points in videos for later search and playback.
Recording Information
View recording information, including version, disk, network, and AI algorithm.
AI
Overview
Explains AI detection falling into AI by camera and AI by recorder.
AI Search
Search for targets using uploaded images and view event playback videos.
Smart Plan
Enable AI by camera for face detection, recognition, and other detection functions.
Face Detection
The device can detect faces present in the video image.
Face & Body Detection
View face and body snapshots and related attributes on the live page after enabling detection.
Face Recognition
Compares detected faces with database to judge belonging and trigger alarms.
IVS
IVS function processes images to match detection rules and activate alarms.
Stereo Analysis
Performs alarm linkage actions based on stereo behavior analysis rules.
Video Metadata
Analyzes video streams to detect human, motor vehicle, and non-motor vehicle for alarms.
ANPR
Extracts plate numbers from video and triggers alarms on matches.
Crowd Distribution
Detects crowd distribution and triggers alarms when density exceeds thresholds.
People Counting
Calculates entry/exit people count in a zone and triggers alarms when thresholds are exceeded.
Heat Map
Monitors active object distribution in a zone over time using colors on a heat map.
SMD
Detects humans and vehicles in video, storing results for fast retrieval.
Alarm Settings
Alarm Information
Search for, view, and back up alarm information.
Alarm Status
View NVR alarm events and remote channel alarm events.
Alarm Input
Configure alarm input settings for local, alarm box, network, and IPC external alarms.
Alarm Output
Set proper alarm output modes (auto, manual, off) for alarm linkage.
Video Detection
Analyze video for considerable changes like motion or distortion to perform alarm linkage.
Thermal Alarm
Recognize alarm types from thermal devices like heat, temperature difference, or cold/hot.
Exception
Perform alarm linkage actions for HDD, network, or device errors.
Disarming
Disarm all alarm linkage actions with a single click.
Network
TCP/IP
Configure network settings like IP address and DNS for device communication.
Routing Table
Configure routing table for automatic calculation of best data transmission paths.
Port
Configure maximum connections and port numbers for accessing the device.
External Wi-Fi
Connect to a wireless network using an external Wi-Fi module.
Wi-Fi AP
Configure Wi-Fi parameters for NVR to allow wireless IPC connection.
3G/4G
Configure 3G/4G module settings for mobile network connectivity.
Cellular Network
Connect to mobile network and view network status and traffic.
Repeater
Support settings for wireless repeater IPC to extend video transmission distance.
PPPoE
Establish network connection by configuring PPPoE settings for dynamic IP on WAN.
DDNS
Dynamically refresh domain-to-IP correspondence for accessing the device via domain name.
UPnP
Map LAN-WAN relationship for accessing the device via WAN IP address.
Email
Configure email settings to send alarm notifications.
SNMP
Connect with software like MIB Builder to manage and control the device.
Multicast
Group IPs using multicast function to solve video display issues when access exceeds limits.
Alarm Center
Configure the alarm center server to receive uploaded alarm information.
Register
Register the device into a proxy server for client software access.
Switch
Automatically assign IP addresses to IPCs connected to PoE ports.
P2P
Add NVR devices to an app for remote management using private network penetration.
Storage
Basic
Set basic storage parameters like disk full strategy and video file length.
Disk Manager
Set HDD properties and format HDD.
RAID
Data storage virtualization combining multiple HDDs for redundancy and performance.
Disk Group
Set HDD group and group setup for different streams and snapshot operations.
Disk Quota
Allocate storage capacity per channel to manage storage space properly.
Disk Check
Detect HDD status to understand performance and replace malfunctioning HDDs.
Record Estimate
Calculate video recording duration based on HDD capacity and record period.
FTP
Store and view recorded videos and snapshots on an FTP server.
iSCSI
Map network disks to NVR via iSCSI for block-level SCSI data transport.
Account
Group
Manage user groups, define permissions, and add/modify/delete groups.
User
Manage users, including adding, changing passwords, and modifying information.
ONVIF User
Connect third-party cameras via ONVIF protocol using a verified ONVIF account.
Security
Security Status
Scan and view detailed information on device security status, user, service, and module status.
System Service
Set NVR basic information like system date, holiday, and enable services like Mobile Push, CGI, ONVIF, SSH.
Attack Defense
Configure firewall, account lockout, anti-DoS attack, and sync time allowlist.
CA Certificate
Create, import, and manage device and trusted CA certificates for secure communication.
Audio/Video Encryption
Supports audio and video encryption during data transmission for enhanced security.
Security Warning
Provides warnings to the user when a security exception or illegal login occurs.
System
General Settings
Set NVR basic information such as device name, serial number, language, and video standard.
Date and Time
Set device time, configure NTP for time synchronization, and set DST.
Holiday
Add, edit, and delete holiday information for record and snapshot periods.
Serial Port
Configure RS-232 parameters to connect to other devices for debugging and operation.
Output and Display
Configure display effects like time/channel titles, image transparency, and resolution.
Tour
Configure selected channels to repeat video playback in turn based on channel groups.
Custom Layout
Set customized video split modes by merging windows.
POS
Settings
Configure POS parameters like name, protocol, connection mode, and privacy settings.
Privacy Setup
Mask specific areas of the video image for privacy protection.
Connection Mode
Set connection type to UDP or TCP for POS data transmission.
Search
Perform fuzzy search for POS transaction information.
Audio
File Management
Add, listen, rename, delete audio files, and configure audio volume.
Audio Play
Configure settings to play audio files during defined time periods.
Broadcast
Broadcast to cameras or channel groups.
Operation and Maintenance
Log
View, search, and back up log information.
System
View system version, AI algorithm version, HDD info, BPS, device status, and network information.
Cluster Service
Configuring Cluster IP
Enable or disable cluster function and configure cluster IP address.
Main Device
Manually add main devices to the cluster and view their status.
Sub Device
Add sub devices to the cluster for redundancy and failover.
Transferring Videos
Transfer recorded videos from sub device to main device after failure recovery.
Configuring Cluster Control
Enable or disable cluster control and configure arbitration IP.
Cluster Log
Search and view cluster logs.
Cybersecurity Recommendations
Mandatory actions to be taken for basic device network security
Essential security actions: use strong passwords and update firmware/client software.
"Nice to have" recommendations to improve your device network security
Optional security measures: physical protection, regular password changes, and secure service modes.

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