User Manual for Commercial Series Net DVRPage 112 Total 121Appendix C SpecificationsModel name QSD42208 QSC26408 QSC26416Video compression H.264Preview resolution 4CIF real time (PAL: 704*576, NTSC: 704*480)Playback resolution (QSD422408 also has 2CIF) CIF/QCIF real timeVideo input 8 8 16BNC (1.0Vp-p, 75Ω)Main video output 1 channel, BNC (1.0Vp-p, 75Ω)Aux video output -- 1 channel, BNC (1.0Vp-p, 75Ω)Frame rate PAL: 1/16—25FPS, NTSC: 1/16—30FPSStream type Video/ Video&Audio (No audio on QSD42208)Max bit rate 32Kbps--2Mbps, self-defineAudio input 0 8 16BNC (2.0Vp-p, 1kΩ)Main audio output (None on QSD42208)1 channel, BNC (Linear Electrical Level, 600Ω)Aux audio output --1 channel, BNC (Linear Electrical Level, 600Ω)Audio compression (No audio on QSD42208) OggVorbis, 16KbpsVoice talk 1 channel, BNC (Linear Electrical Level, 1KΩ)Communication interface 1 RJ45 10M/100M Self-adaptive Ethernet Interface1 RJ45 RS232 PortRS-485 Port 1 Port (T+, T-, R+, R-)Keyboard interface 1 Port (D+, D-)SATA interface 8 8 8USB interface 1 USB interface, USB1.1, can support USB flash memory, USB HDD,USB CD-R/W, USB DVD or USB mouse.VGA interface1 VGA interface, support resolution: 800×600/60Hz, 800×600/75Hz,1024×768/60HzExternal alarm in 16 16 16Relay output 4 4 4Power supply 100~240VAC, 6.3A, 50~60HzPower consumption 20-42W (without HDD and CD-R/W)