Albalá Ingenieros DAR3000C01, Руководство пользователя, Страница: 14 / 32

Albalá Ingenieros | Manual DAR3000C01
3.5.3. Manual/automatic selection of the reference input
The DAR3000C01 module has two operating modes for selection of the reference
input and the sampling frequency: automatic or manual. In automatic mode the
reference input and the sampling frequency are adjusted automatically based upon a
set of prioritized criteria. In manual mode the user selects both the reference input
and the sampling frequency of the converter. This selection is made via switch 3 of S1
as shown in the following table:
MODE SW3
AUTOMATIC OFF
MANUAL ON
The DAR3000C01 can also function without an external reference. In such cases
manual mode should be used to select the sampling frequency and the selection of
reference input is ignored,
In manual mode, the reference input is selected using switches 4 and 5 of S1 as
shown in the following:
REFERENCE SIGNAL SW4 SW5
AES/EBU (AES11) OFF OFF
625 VIDEO lines ON OFF
525 VIDEO lines OFF ON
SPDIF-2 WORD-CLOCK ON ON
3.5.4. Selection of the sampling frequency
In automatic mode the sampling frequency of the AES/EBU signal delivered is the
same as the input reference signal the module is synchronized to. If the reference
input is a video signal, the DAR3000C01 delivers a signal with a 48kHz sampling
frequency. If a different sampling frequency at the output is desired, manual mode
should be selected and that frequency selected using switches 6, 7 and 8 of S1 as
shown in the following table:
SAMPLING FRECUENCY SW6 SW7 SW8
32kHz OFF OFF OFF
44,1kHz ON OFF OFF
48kHz OFF ON OFF
64kHz ON ON OFF
88,2kHz OFF OFF ON
96kHz ON OFF ON
VARISPEED ON ON ON
The varispeed mode only works in manual mode and with the AES/EBU reference
input. In order to use this mode, set the switches of S1 as shown in the following
table:
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