34 Digital Disk RecordersDigital Disk Recorder is the combination of hard disk recorder (a recording device using a hard disk drive to record camerapictures) and video multiplexer. Refer to the Operating Instructions of digital disk recorder for details. Connect with CPUThe digital disk recorders connect with the CPU through its Ethernet port and one or more switching hub units. The system cansupport up to 64 video decoder devices. (NTSC model only) Setup from Admin ConsoleIn order to add a digital disk recorder into the GX system, a system administrator needs to set up the recorder.On the main screen of admin console, select Digital Recorders from the Components menu. (Refer to the Admin ConsoleUser's Guide for details.) Setup Digital Disk Recorder ItselfIn order to communicate with the CPU, a system administrator needs to set up the IP address of digital disk recorder. (Refer tothe Operating Instructions of digital disk recorder for details.)Notes:• The IP Address setting in SETUP MENU of digital disk recorder must match that in the admin console.• The unit address of digital disk recorder should be set to 1.• You cannot control the HD300 alarm suspend function from system controllers.10BASE-T/100BASE-TX SERIAL2 1OTHERSYSTEMDEVICESYSTEMCONTROLLERPOWERONAC INOFF SIGNAL GNDWJ-HD300A SeriesSwitching HUB12INOUTCASCADEOUT1616315151414132113121211111010998877665544332211VIDEOAUDIO IN AUDIO OUT MONITOR OUT CASCADE IN MONITOR (VGA) ALARM/CONTOROLSERIAL ALARMPOWERCOPY 1MODEEXT STORAGE10/100BASE-TRS485(CAMERA)DATAAC INSIGNAL GND14 2WJ-MPU955ALine speedAUTOHTTP Port Number00080DHCPOFFIP Address172.018.000.060Subnet mask255.255.000.000Gateway000.000.000.000Unit Address (System)1Unit Address (Controller)1[Comm] Settings for communication with the CPU