HARDWARE OVERVIEW211) (▲) / (▼) / (◄) / (►)Press ▲ / ▼ / ◄ / ► to move up / down / left / right.In the playback mode:Press “” to pause playback.Press “” to stop playback.Press ““ to fast forward.Press ““ to fast rewind.12) AUDIO (SLOW + ZOOM)Press “SLOW” + “ZOOM” to select live or playback audio from audio channel 1~4.Live audio from audio channel 1~4(indicated in white).Playback audio from audio channel 1~4(indicated in yellow).Audio channel unselected13) P.T.Z. ( + SEQ)Press “ ” + “SEQ” at the same time to enter / exit the PTZ control mode.14) USB portThere are two USB ports on the front panel, one for connecting your USB mouse for mouse control, and the otherone for connecting your USB flash drive for video backup.Note: It’s not allowed to have two USB mice or two USB flash drives connected on the front panel.Note: For the compatible USB flash drive list, please refer to “APPENDIX 6 COMPATIBLE USB FLASHDRIVE LIST” at page 72.15) (For selected models only)Press “ ” to eject the disk tray of the DVD writer.1.3 Rear Panel1) 75Ω / HI-IMPEDANCE (For selected models only)When using VIDEO LOOP, switch to HI-IMPEDANCE. If not, switch to 75Ω.2) VIDEO IN: Connect to the video connector of a camera.VIDEO LOOP (For selected models only): Video output connector.Note: The DVR will automatically detect the video system of the camera, please make sure that thecameras are properly connected to the DVR and power-supplied before the DVR is turned on.3) AUDIO IN (1~4)Connect to the audio connector of a camera if the camera supports audio recording.Note: To make a video backup with audio, make sure the camera which supports the audio function isconnected to the video-in channel and audio-in channel. For example, the audio data from audioCH1 will be recorded with the video data from video CH1.For 16CH models, the audio CH1 ~ CH4 are corresponding to video CH1 ~ CH4 respectively.4) AUDIO OUT (1~2)Connect to a speaker with 1 mono audio output.5) CALL (For selected models only)Connect to a monitor specific for sequence display.6) HDMIConnect to the HDMI port of the monitor which supports HDMI video output.Note: Dual video outputs via both VGA and HDMI ports are supported.