The GV-198 video generator has nine pattern charts available, allowing essential settings to be made in any television receiver, as well as to detect abnormalities through a visual picture examination. The charts can be in format 4:3 and 16:9. The GV-198 is designed to cover the basic standards: NTSC / PAL / SECAM. It has EUROCONNECTOR with the controlled commutation signal, as well as a composite synchronism output.