MFD 12 Screenshot / screen capture

Is there a way I can capture the screen and save it onto an SD card at any given time. I am in law enforcement and require to be able to show radar contacts of other vessels for evidence in court. Using my iPhone to snap a picture of the screen doesn't quite work that well.

Thanks!

Mike

The screen capture feature is not available on the NN3D system. This feature was incorporated on the TZ Touch.