
D19m Technical Description
E46 D19m
Date printed:
30.06.20
SUPPLY
SYNC
2.3.4
D19m MADO – MADI Out for Optical Fibre Cable
1.940.531/1.940.532
The “MADO” MADI output card serves as multiplexer in a D19m rack.
The TDM bus data, written by analog or digital input cards to the bus, are
read and output as a MADI signal on an SC optical connector. The channel
allocation can be selected by the control software.
A second, optional optical transmitter can be installed in order to establish a
redundant output (D19m MADO RED – order no. 1.940.532).
The card is synchronized by the sync input and distributes the clock signals
required for the TDM bus. Four additional AES/EBU sync outputs are
available. If the external sync signal is invalid, the internal generator is
automatically activated and generates a sync signal. Since the frequency ac-
curacy is ±1 ppm and an AES/EBU signal is output as sync signal, this can
be used for the synchronization of a studio.
The MADO cards can be controlled by RS485 from an external device. The
frame address is set by a DIP switch on the backplane.
The earlier version 1.940.530 is equipped with an ST connector instead of
the SC connector (diagram at the end of this chapter).
LEDs:
SYNC
Indicates “ sync” status.
SUPPLY
Indicates “ power on” status.
TDM BUS
TDM BUS
CLOCKS
RS485
LATCH
UART
DP RAM
CONTROLLER
PROCESSOR
BIT
INSERT
ROUTING
RAM
INT REF
TAXI
TRANSM
OPTO
OUT (SC)
OPTO
OUT (SC)
AES
TRANS
AES
REC
SYNC OUT
SYNC IN
1.940.532.20 only
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