Signal flow (video and audio)

Audio

directional microphones hanging from the studio grid follow an XLR cable into the studio terminal outlet box (STOB) from here they connect to RACK. the RACK then follows a line in cable to the sound mixer. the sound mixer has lots of different faders which separate each microphone and other sound sources so that they can be individually controlled. You can create a balance mix of the microphones to make sure their not distorted by moving each fader either up or down on that sound source until its the right level to be broadcast, you can test the sound source via speakers or monitor. this each have independent adjustable sound controls. the speakers allow to to perform a quality test this involves using your ears and adjesting faders until you reach the sound quality your looking for. the line out/ programme out cable then plugs into what ever your recording onto in our case HDD.

On the sound mixer their is also a VU meter that is used to see the output sound DB. If the sound output is too quiet you wont be able to hear very clearly on your recording source, however if its too load you will get distortion. the VU meter has coloured lights showing you the DB range these colours are red, orange/yellow and green. Green being quieter sound and red being loader sound. the perfect DB range is from -12 to +9 with 0 DB being the best output recording.

Video

camera plugs into a adapter box usually uderneth the camera which then follows a cable back into the studio terminal outlet box (STOB). this then is also connected a RACK which connects all vision sources into the vision mixing machine. thats four inputs from the four cameras and one input from the DVD player. The vision mixing machine has lots of buttons each representing either a camera or the DVD players input and shows these on a small LED screen with the input channel marked next to the LED screen. it also has another screen at the end of the button which shows black. when ever using the Vision micing maching always start from black and end in black to prevent input showing from other vision source that isnt needed. the Vision mixer operates the vision mixing machine and tests the quality of the vision with their eyes. Once the vision mixer is happy with a vision source they can press the button that represents that vision source which in turn will put that vision source online which then travels out of the vision mixing machine via a output cable into the HDD.