User manual for DM700 ECDIS hardwareCopyright Danelec Marine A/SMAN11804-10 Page 7/302.1.1 DPU (Data Processing unit)The data processing unit contains the computer for the ECDIS software and communication I/Ointerface. The DPU can be installed on a table-top, bulkhead or in a console. For more informationconsult section 6 “DM700 ECDIS data processing unit (DPU 700-01)”.2.1.2 USB portThe USB port on the front (USB 1) is used for updating charts and software.2.1.3 USB hardware keyThe USB hardware key is a security device which contains encryption keys needed for accessingcharts. The USB hardware key is located under the service cover on the DM700 ECDIS DPU2.1.4 MonitorThe monitor supplies power to the DM700 main unit and displays the image from the ECDIScomputer. The monitor is installed on a table top, or flush-mounted in the console.2.1.5 Monitor HMIThe monitor HMI is used to power the DM700 ECDIS ON and OFF. It also includes a buzzerwhich will sound if an alarm or warning condition occurs in the ECDIS. The monitor HMI ismounted on the monitor hinge or if the monitor is panel-mounted, installed adjacent to the monitor.Consult section 3“Monitor HMI”.2.1.6 Keyboard – Hot keysSome of the most important functions on the ECDIS are also located on the [F1] - [F10] function-keys (see DBS11425 “User Manual for Danelec Marine ECDIS software”).A sticker showing symbols for the hot key functionality is mounted on the keyboard..E.g. sticker mounted on Cortron keyboard.