Parameter	INDEX
Operation system	Embedded Linux Operation System
Video input	3 channels composite video input (NTSC/PAL) BNC (1.0VP-P75Ω)
Video output	1 channel NTSC/PAL, BNC (1.0VP-P75Ω) composite video output
Audio input	3 channels audio input 200-3000mv 10KΩ(BNC)
Audio output	1 channel audio output2000mv1KΩ(BNC)
Screen Division	1, 4 windows display
Video format:	PAL (625 line, 50f/s),NTSC (525 line, 60f/s)
System resource	Multi-tasking operation for multi-channel real time display, recording, playback, network operations simultaneously
Image resolution	Monitor: PAL/NTSC 704×576/704×480 Playback: 352X288/352X240
Video compression	MPEG-4(CBR/VBR)
Audio compression	ADPCM
Frame rate	PAL: 1f/s-25f/s per channel configurable NTSC1f/s-30f/s per channel configurable
Image quality	6 levels configurable
Hard disk	2 IDE ports for a maximum of 4 large capacity HDDs
HDD space occupation	Audio:ADPCM14.4Mbyte/h; PCM28.8Mbyte/hVideo:56-450 Mbyte/h
Alarm input	8 channels alarm input
Alarm output	2 channels alarm output
Alarm relay	30V DC 1A,125V AC 0.5A(relay output)
Network connection	RJ45 10M/100M Ethernet port
Pan-tilt control port	RS485, RS232
Power	220 V±25%50 HZ±2%/110V, 60HZ
Power consumption	20W (without HDD)
Working temperature	-10℃-+60℃
Working humidity	10℅-90℅
Barometric pressure	86kpa-106kpa
Size	2U standard industrial case, 441(W)x460(L)x89(H) mm
Weight	5KG (without HDD)