If you see flashing blue lights around the FARO Edge probe, it means the encoders need to be referenced before you can use the Edge. If you use the Edge without referencing the encoders, your measurements may not be accurate. Once the encoders are referenced the lights turn solid blue and your Edge is ready to use.
If you do not know how to reference the encoders, download the FARO Edge and Laser ScanArm Manual if you do not already have it. Search for Referencing the Encoders to see how this is done or watch this one minute video.