Grass Valley LDK 7500 User Guide - Manual (Page 136)

6-10 HD video mode Viper
Gain
The gain can be selected in five steps: -, 0, +, ++ and +++. The actual
value of the gain in dB can be assigned to these symbols. This is done
in the Install menu.
Disable camera
The disable camera function is a protection function which prevents
unathorised interference with the camera and provides an additional
level of security. Setting disable camera to ON is similar to using User
level 0 to protect the settings of the camera.
Install Menu