Level Adjust
Level Adjust allows you to adjust global level scaling and metering.
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 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:
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.