Kongsberg Mesotech MS1000 Sonar Processing Software is a Microsoft® Windows based application that can be configured to control the complete line of Kongsberg Mesotech Ltd digital scanning sonars and altimeters via industry standard telemetry interfaces. Kongsberg Mesotech MS1000 software installation includes both MS 1000 Express and MS 1000 Standard Edition. The MS 1000 Express does not require a security key (dongle) to run a sonar head. The MS 1000 Standard Edition requires a dongle to run a sonar head with enhanced features. Both versions will playback recorded files without a dongle. The MS 1000 software converts a standard PC into a full function sonar processor without the need for additional boards or hardware.