Albalá Ingenieros DAR3000C01, Руководство пользователя, Страница: 15 / 32

Albalá Ingenieros | Manual DAR3000C01
S1 SELECTIONS FOR VARISPEED MODE
SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW8
X X ON OFF OFF ON ON ON
3.5.5. Selection of the external reference input
The word-clock and black burst external reference inputs use the same connectors on
the rear board and the type of signal that will be applied must be programmed. These
inputs provide loop-through, but they can be internally loaded with 75Ω if
loop-through functionality is not needed. These functions are programmed using
program jumpers J7 and J8 according to the diagram in the silkscreening.
3.5.6. Selection of the termination for the AES/EBU reference input
The digital audio reference input is connected using a balanced line with
loop-through. If a 110Ω termination for this line is needed, program it using jumper
J2 as shown in the silkscreening.
The DAR3000C01 comes from the factory with the following settings:
- 20 bit sampling frequency at the outputs.
- Automatic mode for selection of the reference input and the sampling frequency
- Loop-through activated for the reference inputs.
- Audio tone level of 0 dBfs.
3.6. Installing the module in the mounting frame
The steps needed to install the DAR3000C01 module with the rear board in the
mounting frame are:
1 - Disconnect all power cords from the power supplies of the mounting frame.
2 - Remove the blank panels covering the front and rear of the empty bays chosen for
installing the DAR3000C01 in the mounting frame.
3 - Install the DAR3000P02 rear board ensuring that its 12-pin connectors are properly
aligned with the mounting frame´s mating connectors. Check that the orientation of
the board is correct by looking at the placement of the text printed on it according to
the illustration below.
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