Oscilloscope NVH Display
The CH-51450-NVH Oscilloscope display consists of three tabs:
The first tab is set-up. The set-up information can be entered here if not already done through the set-up wizard. It can also be updated here, if necessary. A laptop or desktop computer, EL-47966 Multi Diagnostic Interface MDI, CH-51450-NVH Oscilloscope, CH-51450-TA148 NVH interface, and CH-51450-TA183 accelerometer are needed to do a vibration analysis.
The second tab is vehicle information. The vehicle information can be entered here if not already done through the set-up wizard. It can also be updated here, if necessary.
The third tab is the record and analyze tab. The standard display will show the known input frequencies received from the CH-51450-TA183 accelerometer as a bar graph at the top of the screen. At the middle of the screen, the input frequencies are listed as text. The frequency (ies) are displayed in Hertz (Hz). If desired, the frequency (ies) can be displayed in RPM by clicking Options, then Advanced Options. The actual amplitude strength of each frequency is displayed and shown in g's of acceleration (expressed to the thousandth of a force of gravity, or "milli-g"). At the bottom of the screen, it also shows a plot of all frequency inputs along with engine speed in blue, and vehicle speed in red. The data can be saved in 50 second increments. The data can then be saved by clicking File, then Save. Files that are saved can then be loaded into the software by clicking File, then Load.