25 Connection with the PCThere are two options to communicate with the PC, the first is using Serial Port and the second is via Ethernet, when the speci-fied Network Board is installed in the Disk Recorder. Serial Port ConnectionThe SERIAL Port on the rear of the Disk Recorder conforms to RS-232C, and it can communicate with the PC by connecting asshown in the figure. 10/100BASE-T Port ConnectionIf the optional Network Board is installed in the WJ-HD500B Disk Recorder, it is enabled control from the PC via Ethernet.Shown in the figure is an example for connection.HubPersonal ComputerLANHubDigital Disk Recorder10/100BASE-T Cable(Locally Procured)16161515141413131212111110109988776655443 22311SIGNAL GND10/100BASE-TSPOTOUTIN EXT STORAGE COPYCONTROL ALARMVIDEOMODEDATA REMOTE(WV-CU50)GEN-LOCK OUTSERIALPOWERONACINOFFINOUTOUTMULTI SCREEN OUT AUDIOPersonal ComputerDigital Disk RecorderD-sub9D-sub9orD-sub2516161515141413131212111110109988776655443 22311SIGNAL GND10/100BASE-TSPOTOUTIN EXT STORAGE COPYCONTROL ALARMVIDEOMODEDATA REMOTE(WV-CU50)GEN-LOCK OUTSERIALPOWERONACINOFFINOUTOUTMULTI SCREEN OUT AUDIO 4 (ER)5 (GND)3 (TXD)6 (DR)7 (RTS)8 (CTS)2 (RXD)6 (DR)7 (GND)3 (RXD)20 (ER)5 (CTS)4 (RTS)2 (TXD)PCDB25WJ-HD500BDB91234567812345678WJ-HD500BDB9PCDB9