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QSD42908 User’s Manual
5
Chapter 1: Product Introduction
1.1 Summary
The QSD42908 network digital video recorder is an excellent digital surveillance product. It
uses embedded MCU and Linux, combining the most advanced technology in the Information
Industry such as video and audio encoding/decoding, hard disk recording and TCP/IP. The
firmware is burned into flash memory, which is more stable and reliable.
The QSD42908 has both the features of a digital video recorder (DVR) and a digital video
server (DVS). It can work as stand alone, or be used to build a powerful surveillance network,
widely used in banking, telecommunications, transportation, factories, warehouses, irrigation, etc.
1.2 Features
Compression
H.264 video compression algorithm (PAL is 15FPS and NTSC is 20FPS).
Support multi-zone motion detection.
Support mask function to mask sensitive area.
Support view tampering alarm function for spiteful camera block.
Support video signal loss alarm function.
Support position configurable OSD&LOGO.
Support both constant bit rate and variable frame rate.
Storage function:
1 IDE interface for 2 HDDs that can support up to 2000GB Each.
Support HDD S.M.A.R.T function.
Support FAT32 file system.
Supports many recording modes: manual recording, motion detect record, external alarm
record, motion & alarm record, motion | alarm record.
Support cycle and non-cycle record mode.
Support USB flash disk, USB hard disk and USB CD/DVD for backup.
Preview & Playback function:
Supports one composite and one spot video output, and one VGA output.
Supports fast/slow playback, pause, forward, backward, frame by frame, etc.
Uses define preview layout.
Supports one channel playback