LAWO mc256 MKII, Техническое руководство

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mc²56 MKII Technical Manual V5.10.2/1 163
Chapter 3: AdminHD
Core Configuration: Editing Parameters
Operating Levels
These parameters specify the operating levels which the system resets to after a cold start. Users can change
the levels later from the console GUI's
System Settings display.
There are three level settings which interact to define the internal and analogue-to-digital operating levels of the
system:
·
Maximum Analogue Level = Reference Level + Headroom
The system supports a maximum analogue level = +24dB, and a minimum analogue level = +12dBu.
Warning
Changing the Reference Level or Headroom options move the internal 0dB operating point for the system
and therefore will change the behaviour of any level dependent settings such as dynamics processing and
metering. Therefore, it is not advisable to alter these levels once dynamics processing has been set.
For systems fitted with fixed level analogue I/O cards:
·
The Headroom and Reference Level cannot be altered independently. For example, with a
+15dBu fixed analogue I/O card and +9dB Headroom , the Reference Level must be +6dBu.
·
The Maximum Analogue Level of the whole system is defined by the DALLIS card with the lowest
GDA (General Device Address) - this is the card with the lowest address fitted to the DALLIS frame
connected to the lowest port number of the first Nova73. (If a different fixed level analogue card is
fitted elsewhere within the system, then a warning appears in the log file; however, the card with the
lowest GDA still wins.)
Ø
To set the levels:
1. Double-click on the Core within the 'Core Browser' , and select the System settings tab in the 'Parameter
Box' :
2. Select the Analog full-scale level from the drop-down menu options.
3. Then set the Reference level by clicking on the up and down arrows - the resultant Headroom is
calculated automatically.