Time, Date

The time and date when this frame was recorded.

Frame count

The PAL video records 25 frames per second, each made up of two interleaved scans. The frame count is the number of these interleaved "frames" since the start of the second shown in the time field.

"NR" just stands for "New Record".

Errors

A number of error conditions can occur when using the equipment, and these are recorded on the video. Some codes that are relevant to the "target" are:

• Timeout
  The laser gun takes the speed reading and it appears on the screen then, about four frames later, the word "Timeout" is added to the display (i.e. 4/25 seconds later). This message indicates a time-expired speed-measurement. This is to prevent any possibility of recording the speed of one vehicle, and then just pointing the camera at other vehicles and telling everyone that they were doing 140 mph! So there should be about four frames, before the one that they have sent to you, without the "Timeout". If there aren't then the speed they measured was the speed of someone else's car! This link will take you to an example of this.
• Error 01
  Target out of range or too close
• Error 02
  Loss of target due to beam interruption or target going out of range
• Error 03
  Unstable reading due to poor aim or panning off of target
• Range
  Range to the target measured by the laser
• Speed
  Target speed calculated from a succession of range measurements. It appears as a negative number if the vehicle is moving away from the device.
• Reference number
  The 8 digit number is user-definable. In most forces it carries the officer's number (in this example the last 3 digits) and then a site location reference number (the first 5 or so digits).