For viewing purposes, you must playback the recording either to the transmitter or directly to a receiver (TV set or monitor). At the receiver, the video and audio signals are separated and processed by separate circuitry. This circuitry changes the video and audio signals back to sound that you can hear and pictures that you can see. The sound is reproduced at the loudspeaker, and the picture is reproduced on the face of the cathode-ray picture tube.

A primary part of the monitor system is the cathode-ray tube. A type of cathode-ray tube is used in

Figure 13-7. Hi8 VTR tracks.

Figure 13-8. Hi8 video camera.

the camera to convert light rays into electrical impulses. The cathode-ray tube converts the electrical impulses back into light in the receiver (monitor).