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Alhua - Dahua DVR Manual

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Introduction 2
Support multiple-channel audio and video signal. An independent hardware decodes the audio
and video signal from each channel to maintain video and audio synchronization.
Backup Function
Support backup operation through USB port (such as USB storage disk, portable HDD,
and burner).
Client-end user can download the file from local HDD through network to backup.
Record & Playback
Support each channel real-time record independently, and simultaneously support the
functions such as search, backward play, network monitor, record search, and download.
Support various playback modes: slow play, fast play, backward play and frame by frame
play.
Support time title overlay so that you can view event accurate occurred time.
Support zooming in the selected area in the live view.
Network Operation
Support network remote real-time monitor, remote record search and remote PTZ control.
Alarm Activation
Several relay alarm outputs to realize alarm activation and on-site light control.
The alarm input port and output port have the protection circuit to guarantee the Device
safety.
Communication Port
RS-485 port can realize alarm input and PTZ control.
RS-232 port can connect to keyboard, COM port of PC or the matrix control.
Standard Ethernet port can realize network remote access function.
The dual-network port has the multi-address, fault tolerance, load balance setup mode.
PTZ Control
Support PTZ decoder through RS-485 port.
Intelligent Operation
Support mouse operation function.
Support "copy and paste" function for the same settings.
UPnP (Universal Plug and Play)
Establish mapping connection between LAN and WAN through UPnP protocol.
Camera Self-adaptive
Auto-recognize and work with the PAL or NTSC camera and HD camera.
… 15 …


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  • We have lost power on our DVR, there is power up to the power supply,
    and the whole system is coupled to a UPS system for some time......
    we have had zero lightning and any effects of load shedding is nullified by UPS system,
    could you kindly inform what could be wrong PLEASE ?
    Chris Gibson 0827932600 Submitted on 22-2-2023 at 12:16

    Reply Report abuse


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