Surveillance 4CH Ahd 720p SD Cards Mobile Digital Video Security Recorder

OS

Linux

Graphics Operation Interface

System parameters can be set through external display and remote controller

Security Management

2-level management for user password, administrator password, supporting encrypted transmission

Video and Preview

Video Input, Output

4-channel video input, 1channel video output; 1.0Vp-p, 75Ω

OSD

Character superposition function, information superposition of time and date, device ID and GPS, etc.

Video Compression Format

Compression coding. Applying Hisilicon hi-performance processor.

Dual-Stream

Supported

Preview Function

Preview of 1-channle, 4-image stitching, supporting full screen triggered by event and switching of stitched images

Frame Rate

PAL: 100 frames/s, up to 25 frames/s per channel; NTSC: 120 frames/s, up to 30 frames/s per channel

Resolution

CIF, HD1 and D1 for selection, supporting 2 channels of D1+ 2 channels of CIF at the most

Quality

Grade 1 to grade 5 for selection (descending)

Bit Rate

CIF: 256Kbps ~ 1.5 Mbps, 8-level bit rates for selection

HD1: 600Kbps ~ 2 Mbps, 8-level bit rates for selection

D1: 800Kbps ~ 3Mbps, 8-level bit rates for selection

Audio

Audio Input, Output

4-channel input, 1-channel output

Compression Format

G.726 coding

Recording

Storage Medium

Supporting one 2.5” hard drive and one SD card, which supports up to 32G, supporting data redundancy storage technology;

File Format/ System

ASF/FAT32

Video Strategies

Recording at startup by default, supporting timed recording, recording triggered by alarm and event, as well as manual recording

Video Search

Searching by time, type, storage device and other conditions

Video Playback

Supporting playback on local device, supporting synchronous playback of up to 4 channels and analysis on vehicle information in the files

Supporting fast forward, fast backward, play and pause, supporting fast forward and fast backward at 2x, 4x, 8x and 16x speed, supporting file play from selected time

Alarm

Alarm Input/ Output

6-channel on/off signal alarm input, 1-channel on/off signal alarm output

Alarm Recording

Prerecording function 15 seconds before alarm, duration of recording after alarm can be adjusted from 30s ~ 30mi