<- tb9:channel_snapshot_types|Channel Snapshot Types ^ tb9:start|Toolbox9 Software ^ tb9:clock_format|View Clock Format -> ====== Level Adjust ====== Level Adjust allows you to adjust global level scaling and metering. [{{ :tb8:level_adjust.png?nolink |//Device settings, Level Adjust page//}}] Default settings are: ^Level type^Value^ |Digital Level|0dBint=-9dBFS| |Analog Level|6dBu=0dBint| |EBU R 128 Level (Loudness)|0dBint=-9dBFS| All levels are converted to //dBint//, which is a DHD internal leveling. You can change here how the dBint value is defined for DHD devices to match your standards. ''dBint'' is always digital level. **Important**\\ When adjusting levels here, settings are global. You can also adjust levels on the [[tb9:io_overview|I/O Overview]] page for special inputs and on specific channel or level detect settings. ---- ==== For Digital Levels ==== On EBU and ARD standards: //0 dBint = -9 dBFS// Because digital systems only have an absolute 0, maximum setting is //0 dBint = 0 dBFS//. Therefore, ''0 dBFS'' is the maximum level for digital systems. ---- ==== For Analog Levels ==== //dBu// is for analog scaling. Related to voltage, this means: === Germany === //U₀ = 0.7749 V ≡ 0 dBu// The reference Level defined in broadcasting standards of German ARD is: //U₀ = 1.5 V ≡ 0dB ≡ 6 dBu// === International === //U₀ = 1V ≡ 0 dBV// (dBV is always related to 1V. Sometimes it is also called only dB or dBu) If it is relevant to you, you may calculate with: //0 dBV ≈ 2.2 dBu// ---- === General addition === //U₀// - Reference Voltage; \\ Calculation of levels related to Voltage: p_u = 20lg{U}/{U_0} According to this, A/D conversion is default set according to standards of ARD: //+6 dBu = -9 dBFS = 0 dBint// ---- ==== Input Metering Settings ==== Input Metering settings change the ballistics of all level meters, e.g. overbridge modules or fader strips.