APPENDIX B SOFTWARE SERVICE TOOL INSTRUCTIONSMB90 MB120 Series Service Manual 77 Ohaus Corporation www.ohaus.comB.4 Diagnostics.Diagnostic act as a communication window between scale and Service and Repair Tools.Once 'Diagnostic' is selected the Com Port Configuration option will appear. Complete theconfiguration and click Next. You will see the bellow window.MB90/120 Diagnostics consists the below function.1. Ramp - A to D conversion information.2. Linearization- Service Linearization (performing Service Linearization).3. Span- Service Span (performing Service Span Calibration)