9INTRODUCTION4. INSTALLATION AND CONNECTIONSThe digital video recorder has ventilation holes. Make surethese holes are not blocked after installation. Do not usethe unit in areas with poor ventilation, such as a bookshelfor box. When installing the unit in a rack, ensure a gap of atleast 5 cm at the top and bottom.Make sure the TV SYSTEM selector switch on the rearpanel is set to “NTSC”. (JP.8)Disconnect the power and then connect it again afterselecting NTSC or PAL.This section describes how to connect the digital video recorder to CCTV cameras and other devices. Be sure to read theinstruction manuals for each connected device. Make connections carefully. Improper connections can cause smoke ormalfunctions.The connections for cameras (4), TV monitor (1), microphone and PC are shown below.When installing Check the settingBasic connectionsAUDIOIN3412OUTLAN 11 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 192 3 41 2 3 4INOUTMONITOR OUTAC INVIDEOALLRESETONNTSCPALTV SYSTEMRS-485TERMINATEMIC INOFF*1 Use a shielded LANconnection cable, and windit once around the suppliedferrite core.TV monitor(sold separately)Video input terminalCCTV camera (sold separately)PC (sold separately)switching hub(sold separately)orMicrophone(sold separately)Amp(sold separately) *1Microphone(sold separately)Audio input terminale00_VDH_M814.book Page 9 Thursday, October 28, 2004 9:59 AM