# System Settings ## 0..5 CV option By default, All CVs are ±5V, but this is not always a good option, in particular for {guilabel}`TYPE` which controls also the step in a sequence, or {guilabel}`FAM`. Depending on your module controlling CV, some might not be able to generate negative voltages. In this case you can use the 0..5V instead. ```{image} config.png :align: left ``` ```{image} type_cv.png :align: left ``` To change the CV range of {guilabel}`TYPE` or {guilabel}`FAM`, press the {guilabel}`TYPE` encoder for 2 seconds, navigate to {guilabel}`Config`, and then to either {guilabel}`TYPE CV` of {guilabel}`FAM CV`. Click the encoder and change the value to the desired range. ## Screen options Typically for shooting a video in a controlled light environment, the screen contrast might be too high, and you might not want the screen saver to trigger. ```{image} screen.png :align: left ``` ```{image} screen_light.png :align: left ``` To change the contrast of the screen, navigate to {guilabel}`Config`, then {guilabel}`Screen` and finally {guilabel}`Light`. Click the encoder and change to value to the desired contrast, from 1 to 16. ```{image} screen_saver.png :align: left ``` To change the screen saver option, navigate to {guilabel}`Config`, then {guilabel}`Screen` and finally {guilabel}`Scrn Saver`. Click the encoder and change to value to the desired value, either {guilabel}`On` or {guilabel}`Off`.