Software compression dvr card Dvr card gv800 Dvr card gv650 Dvr card gv600 Input type: d-type: db15 x 2 Video input (s) : 4, 8, 12, 16 cams Audio input (s) : 4 channels, & 16ch (with gva16 board) is optional Recording rate: 120 fps (ntsc) , 100 fps (pal) . Display rate: 120 fps (ntsc) , 100 fps (pal) . Video resolution: Ntsc: 720x480, 720x480 de-interlace, 720 x 240, 640 x 480, 640 x 480 de-interlace, 640 x 240, 320 x 240 Pal: 720 x 576, 720 x 576 de-interlace, 720 x 288, 640 x 480, 640 x 480 de-interlace, 640 x 240, 320 x 240 Compression format: wavelet, mpeg-4, geompeg4 Gv-dsp support: yes Gv-a16 support: yes Gv-net / io card support: no Software: v7. 0 (with usb-dongle) / v6. 1 / v6. 05 Dimension: new pcb (d-type ver7. 05) : 175mm x 98mm. Old pcb (d-type ver6. 1) : 150mm x 100mm.