
D19m Technical Description
E32 D19m
Date printed:
30.06.20
2.2.2
D19m AESI SFC – Dual AES/EBU In w. Asynchronous SFC
1.940.540
The AESI SFC card can be used for standalone applications as well as for
the D19m rack. It routes two asynchronous AES/EBU input signals to the
TDM bus, where they are read from a MADO card and can then be output
through a MADI link. At the same time, each of the two AES/EBU inputs is
fed to two AES/EBU outputs.
The AESI SFC card can be used next to the other D19m cards in a D19m
rack. Incoming AES/EBU signals are converted via a sampling frequency
converter either to an internal sampling frequency (32 kHz, 44.1 kHz, or
48 kHz, selectable with a front panel switch), or to the sampling frequency
of an external sync signal. When the external sync signal fails, the internal
sync reference will be used automatically. The input and output sampling
frequencies can be between 25 kHz and 55 kHz, and their ratio must be
between 0.5 and 2. The channel status information will be transmitted from
the inputs to the outputs, and the sampling frequency information will be
corrected correspondingly.
LEDs:
INPUT AES1/2
The LEDs are on when a valid AES/EBU signal is available at the input
IN1 or IN2.
SYNC INT/EXT
Depending on how the card is synced, the corresponding LED is on.
AES DARS
PROCESSOR
DP-RAM
REC
REC
SFC
SFC
REC
CONTROLLER
SHIFT
REG
AES IN 1
AES IN 2
SYNC IN
INT REF
TDM
CONTR
CLOCKS
TDM BUS
AES OUT 1
AES OUT 2
AES1
AES2
INT
EXT
48
44.1
32
INPUT
SYNC
AES
Sync
TTL
16
Bit Setting:
18
20
24
REM
EXT
TDM
INT
Содержание D19m
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