21 Connection with the Extension Units SCSI ConnectionThe Digital Disk Recorder WJ-HD500A controlsthe extension units through the SCSI chain.1. Connect the supplied SCSI cable betweenthe EXT STORAGE port on the WJ-HD500Aand the EXT IN port on the 1st extensionunit.2. Connect the supplied SCSI cable betweenthe EXT OUT port on the 1st extension unitand the EXT IN port on the 2nd extensionunit.Repeat connections in the same manner forall additional extension units.3. The 3rd extension unit must be a WJ-HDE505 if a further extension unit is con-nected. Use WJ-HDE500 if the 3rd unit islocated at the end of the SCSI chain.Up to 6 extension units can be added. Switch SettingData termination and SCSI number settings are required, asshown below.1. Set the MODE switch #2 on the rear of the WJ-HD500Ato ON when connecting with an extension unit.2. Set the SCSI ID number for each unit by pressing the[–] or [+] button on the rear of the Extension Unit.0 to 5 are applicable to the extension units.Note: SCSI ID 6 and 7 are reserved for WJ-HD500ADisk Recorder.3. Set the termination switches on the rear of the ExtensionUnits to ON or OFF.ON: Is applied to the extension unit located at the endof the SCSI chain.OFF: Is used for units other than the end unit.EXT STORAGESIGNAL GNDSIGNAL GNDPOPOWERWERAC INC INSCSI IDSCSI IDEXT OUTEXT OUTEXT INEXT INTERMINATERMINATORORGNDGNDTHERMAL ERRTHERMAL ERROR OUTOR OUTNCNC+–OFFOFFONONONONOFFOFFSIGNAL GNDSIGNAL GNDPOPOWERWERAC INC INSCSI IDSCSI IDEXT OUTEXT OUTEXT INEXT INTERMINATERMINATORORGNDGNDTHERMAL ERRTHERMAL ERROR OUTOR OUTNCNC+–OFFOFFONONONONOFFOFFSIGNAL GNDSIGNAL GNDPOPOWERWERAC INC INSCSI IDSCSI IDEXT OUTEXT OUTEXT INEXT INTERMINATERMINATORORGNDGNDTHERMAL ERRTHERMAL ERROR OUTOR OUTNCNC+–OFFOFFONONONONOFFOFFSIGNAL GNDSIGNAL GNDPOPOWERWERAC INC INSCSI IDSCSI IDEXT OUTEXT OUTEXT INEXT INTERMINATERMINATORORGNDGNDTHERMAL ERRTHERMAL ERROR OUTOR OUTNCNC+–OFFOFFONONONONOFFOFFSIGNAL GNDSIGNAL GNDPOPOWERWERAC INC INSCSI IDSCSI IDEXT OUTEXT OUTEXT INEXT INTERMINATERMINATORORGNDGNDTHERMAL ERRTHERMAL ERROR OUTOR OUTNCNC+–OFFOFFONONONONOFFOFFSIGNAL GNDSIGNAL GNDPOPOWERWERAC INC INSCSI IDSCSI IDEXT OUTEXT OUTEXT INEXT INTERMINATERMINATORORGNDGNDTHERMAL ERRTHERMAL ERROR OUTOR OUTNCNC+–OFFOFFONONONONOFFOFF16161515141413131212111110109988776655443 22311SIGNAL GND10/100 BASE-TSPOTOUTIN EXT STORAGE COPYCONTROL ALARMVIDEOMODEDATA REMOTE(WV-CU50)GEN-LOCK OUTSERIALPOWERONACINOFFINOUTOUTMULTI SCREEN OUT AUDIODigital Disk RecorderWJ-HD500ASCSI ID = 6 and 7Extesion Unit #1WJ-HDE500SCSI ID = 5Extesion Unit #2WJ-HDE500SCSI ID = 4Extesion Unit #3WJ-HDE500 orWJ-HDE 505*SCSI ID = 3Extesion Unit #4WJ-HDE500SCSI ID = 2Extesion Unit #5WJ-HDE500SCSI ID = 1Extesion Unit #6WJ-HDE500SCSI ID = 0SCSI CableSCSI Cable SCSI CableSCSI CableSCSI CableSCSI Cable* Use a WJ-HDE505 for the 3rd unit position if additional units are installed.Use a WJ-HDE500 if the 3rd position is the end of the SCSI chain.1+–SCSI IDTERMINATORONOFF1 2 3 4MODEON