This problem is primarily seen at slower tape transport. The compact styled device used a simplified drive mechanism for tape transport. The comparison of the two frequencies drives the speed of the tape transport. The unit used 2.5-inch tape reels with a rim-drive tape transport. Both used a tape transport design adapted from the video recording division. Each end of the tape got a conductive mark to stop tape transport. The player supports HDV video, though it does not have a tape transport. Tape transport legends in slightly different position on later N1702's. The tape transport as a whole is called the "transport mechanism". Most tape transport mechanisms will allow fine mechanical adjustment of the azimuth of the heads.