Re: cctv 500 square meter design for 24 cameras for the peri
I am missing information about the camera types, and the application / device "on the other end" of the cameray (meaning: monitors, tape devices etc).
What do you want to observe, in which picture quality do you want to observe (picture size, frame rate) ? Is it necessary to "control" the cameras (focus, direction etc) ?
250 sqare meter sounds like a shop area, 20*25 meter. you might set up 4 rows of cameras, each row holding 6 cameras.
I would suggest digital transmission in this case because...
:: setting up a network based on "cheap" CAT5 cable is pretty easy
:: necessary amplifiers (hubs) are pretty cheap
:: digital camerars (webcam) are pretty cheap, with acceptable quality