Description

 This device has both features of digital video and audio recording(DVR) and digital video and audio server(DVS). It can not only work locally and independently but also compose of a powerful security monitoring net with networking.  Adopts graphical user operation interface. Supports USB mouse, panel and remote control operation modes.  True four-tasking synchronization function; recording, playback, transmission and backup can work simultaneously.  *-channel video, *-channel audio full real-time synchronous input; with voice talkback 1 RCA.  Under CIF Video resolution, PAL(**2x**8) format total recording resources is **0 frames and each channel can realize independent hardware compression at the speed of *5 frames(adjustable) per second. NTSC(**0x**0) format total recording resources is **0 frames and each channel can realize independent hardware compression at the speed of *0 frames(adjustable) per second.  Video compression adopts H.**4 compression technology. Supports constant bit rate, variable bit rate compression and variable frame rate compression.  Audio compression: ADPCM.  MAX support 2×***0GB SATA HDD.  Recording Modes: Timing recording, manual recording, motion detection recording and alarm recording, any mode for selection.  *-channel CIF real time recording and network transmission work simultaneously; *-channel to *-channel CIF playback.  Recording playback searches according to the channel number, recording type and recording time, supporting fast forward, slow forward, single-frame, last section, next section *****  Supports one USB2.0 high-speed port and one USB1.1 port. Provides backup of video files on the hard disk; supports U disk and USB hard disk; the backup file can be directly generated to be with AVI format.  Preview supports single-channel , multi-channel and single-channel auto-switch display.  Supports alarm when image blocked .  Supports multi-protocol RS**5 PTZ control, PTZ preset points, cruising