Origin	China
Model Number	ST-4000 series
Brand Name	Howell

Digital Video Recorder Server Howell ST-4000 series

Howell ST-4000 series is a new generation professional embedded digital video recorder and server. It is an advanced embedded surveillance server integrating Digital Video/Audio Recorder (DVR) and Digital Video/Audio Server (DVS). Howell ST-4000 series use new generation digital signal processing (DSP) chips with lower power consumption, D1 resolution and much higher quality images. It owns great reliability by using the high performance embedded MPU as the main CPU and Real-time Operating System (RTOS).

Performance-Cost Advantage

l  Up to 16 D1 (4CIF);

l  Up to dual output independent, and a VGA output; (double playback)

l  Supports SATA/PATA harddisk;

l  Free remote Client and remote upgrade.

Key functions and features

Monitoring functions

•       Single or multiple screen real-time view, touring display
•       On Screen Display (OSD) menu
•       Privacy Mask processing, video loss processing
•       Multi-sensitivity and multi-region motion detection
•       H.264 compression algorithm, high resolution
•       Up to D1 independent hardware compression
•       Video and audio synchronization in playback and in preview
•       Bi-directional audio talk, real-time audio encoding and decoding (CODEC)

Alarm functions

      Video tampering alarm

      Local video signal level alarm interoperation

      Network alarm signals upload

Recording and playback functions

      Multiple modes schedule including by manual, timing, alarm, motion detection

      Watermark technology to avoid images to be changed reluctantly

      Multiple playback modes including fast play, slow play, pause and frame by frame

      Dual-channels playback simultaneously

Storage functions

      One unit supports one to eight (1-8) IDE/SATA hard disks

      Hard disks plug in and use with no disk fragmentation

      Non-operation hard disk set as sleep mode to extend the hard disk usage life

      Support network storage

      Backup using USB flash disk, USB hard disk and CDRW

Network functions

      Support TCP/IP, UDP, RTP, PPPoE, PPP and more protocol

      Support DDN, SDH, PSDN, ISDN, ADSL and more

      Remote visit

      Bi-directional audio talk or unidirectional audio broadcasting through network

      Hardware Interface

      One to sixteen (1-16) video input

      One to sixteen (1-16) video loop output

      One to two (1-2) AV output, one (1) VGA output (available simultaneously)

      One to sixteen (1-16) audio input

      One to two (1-2) audio output

      One (1) line in (for voice talk)

      One (1) USB interface

      One (1) RS-232 output

      One (1) RS-485 output

      Two (2) RJ45 keyboard interface

      One (1) RJ45 Ethernet interface

      Four (4) /Eight (8) /Sixteen (16) alarm input

      Two (2) /Four (4) alarm output (relays)

Technical Specifications