QSD42908C8 User’s Manual96Appendix D: DVR SpecificationsModel QSD42908Compression standard H.264Preview resolution PAL:704*576(4CIF) NTSC704*480(4CIF)Recording resolution PAL:352*288(CIF) NTSC352*240(CIF)Video input 8 channels BNC ( 1.0 Vp-p ,75 Ohm)Video out 1 channel BNC (1.0Vp-p ,75 Ohm)Video spot out 1 channel BNC (1.0Vp-p , 75 Ohm)Frame rate PAL: 15FPS, NTSC: 20FPSAudio compression standard OggVorbis 16KbpsAudio in 4 channels RCA (2 Vp-p ,1KOhm)Audio out 1 channel RCA (Linear electrical level,1KOhm)Stream type Video or Video&AudioBit rate 32Kbps-2Mbps (user defined) recommend768Kbps each channelIDE interface 1 IDE interface , supports 2 HDDsNetwork port 10M/100M self-adapt Ethernet portRS-232 port 1RS-485 port T+T- R+R-USB 1 USB 2.0 interface ,support USB disk, USBHDD, USB CD/DVD-R/WVGA 1VGA PortResolution:800*600/60Hz1024*768/60Hz1280*1024/60HzAlarm in 16 channelsAlarm out 4 channelsPower supply DC 12VPower consumption 10W(without HDD)Working temperature 14 F--131 FWorking humidity 10%-90%Dimensions 17.5in*11.5in*1.75inPAL: 176*144(QCIF), 352*288(CIF), 704*288(2CIF), 528*384(DCIF), 704*576(4CIF);NTSC: 176*120(QCIF), 352*240(CIF), 704*240(2CIF), 528*320(DCIF), 704*480(4CIF).