I've just realized a professional crt monitor thats cheap and easy to find in my country (BRAZIL). JVC Brand, This is a picture of the inputs. Its bnc (?), but i think something is wrong. The number of inputs for each video signal is different from sony pvms. Someone knows? Photo https://docs.google.com/open?authuser=almircanella@gmail.com&id=0B6svSO6j4JsFN0tVOVNpUzZoc0U
INPUT A: They are composite video & mono audio inputs. INPUT B: No idea what that is, Y/C INPUT: No idea. Sony PVM's have separate inputs for R,G,B + Sync (mainly BNC - 4 Connectors per Video input)
y/c is S-video, VTR is an Old SChool input for old vcrs and tape decks. i have adapters here at work that turn that y/c plub into either two connector BNC or standard 4 pin mini din
Input A is standard composite. Input B (VTR) is like what Skyway said. It is an S-video signal over a special connector The Y/C input is S-video using JVC's proprietary 7-pin connector. So no RGB on this monitor.