Communication between the various members a team of recovery is the key element of live television.
The Tally is the device that turns on the red light on the camera, whose purpose is to warn all those who are on the set, especially the actors and the cameraman, that the car is "on air". Some mixers
end economic not have this basic function, but it can be realized with a efacile extremely economical device to be built for those who have a minimum of manual work.
The metal finger A placed in one of four possible positions causes the corresponding RCA B is a voltage of 3 volts supplied by two batteries. The LED's high brightness C are mounted on a female RCA jack.
Led C be fixed on the camera (eg with a piece of Velcro) is connected to the B with a standard coaxial cable. You can use a double cable that leads from one part of the video signal and the other the tally.
Obviously it is up to the mixer dell'addetto or his helper to place the finger A wave at the camera.
(The prototype of the photo was made by me in 1998, according to my original idea was never patented)
0 comments:
Post a Comment