The Interval (Tacho) Data Graph displays the second-by-second values of speed, RPM, and other inputs, such as headlight status and brake pedal status. This detailed information is useful for performing accident analysis. 

View Tacho data on the Trip timeline in the block that shows Tacho availability.

Large amounts of tacho data are downloaded in tacho blocks. These blocks are visible on the timeline, separated by white lines for the MiX 4000/6000 units due to the way the data was broken up and stored. Please note: this does not indicate any interruption in activity or data but simply how the data was downloaded. This will not apply to data stored in Lighting. 

A vehicle can record tacho data during and/or between trips. This setting can be configured in the mobile device properties.

Accessing the Tachograph

1. Choose the asset or driver. 
2. Choose the date or the last trip. 
3. Select the events. 
4. Use the arrows to move the tachodata you want to view so that it is highlighted by the dark gray bar in the centre. 
5. Click on the tachograph icon.

Note that this is only available if tacho data is supported - devices like the VisionAI that do not support tacho data will not show this icon.

• A new window will open showing the Tacho timeline.
• Click on the downward-facing arrow located on the far right of the screen to access the controls.
• Click on each dropdown to select the required inputs (*up to four inputs can be selected).
• Click the arrow again to close the controls.

*Although you may have requested the recording of tacho data for several parameters, only four can be displayed at a time. Each line is plotted using its own scale on either the left or right vertical axis. Controls are provided on the toolbar for selecting the data that is to be plotted against each axis.

Use the mouse wheel to zoom in on the tacho timeline and view tacho data of up to one second.

Add events to the Tacho timeline

• Click on the events flag.
• Enter the event in the filter field or scroll down the list.
• Check the box to select the event.
• Click Select.

The green number next to the flag displays how many events have been selected

Remove events from the tacho timeline

• Click on the event to select it.
• Click on the red cross to remove the event from the tacho timeline view.

Print or export the tachograph

• Click the print button / or click the export button.