D21m System
D21m Modules 6-13Date printed: 25.09.07
6.3.2 MADI I/O Cards ( and ) 1.949.430, 1.949.431, 1.949.433
The MADI I/O card can establish a 64-channel MADI input and output to the
D21m frame,
with 44.1/48/88.2/96 kHz operation. Optical inputs and out puts
are provided on SC connectors available in multi-mode and single-mode ver-
sions, as well as a ver
sion with RJ45 connectors for twisted-pair cable and an
additional word clock output on a BNC socket.
The auxiliary interface can be used as a redundant link or, in 96 kHz opera-
tion, to extend the number of channels from 32 back to 64.
It is possible to transmit any serial control signals, such as MIDI or Sony 9-
pin (machine control) through a MADI connection without losing any audio
bandwidth or microphone control of the remote I/O box. For this purpose, an
RS422 connector is located on this card (hub frame side). The desired baud
rate can be set with a rotary switch. The pinout of the RS422 connector can
be set to “device” or “controller” with a DIP switch, depending on the 3rd
party serial device connected.
Max. cable length (1.949.430, multi-mode fi bre, 1300 nm*) 2 km
(1.949.431, single-mode fi bre, 1300 nm*) 15 km
(1.949.433, CAT5e or better, fl exible braid) <75 m
(1.949.433, CAT7, solid core) <120 m
* different wavelengths on request
Input frequencies 44.1/48/88.2/96 kHz ±100 ppm
Current consumption (3.3 V) 0.4 A
(5 V) 0.4 A
Operating temperature 0...40° C
Lock LED
RX
Dual MADI Decoder
Dual MADI Encoder
RS422
RX/TX
Backplane Connector
Lock LED
MADI In 1
MADI In 2
MADI Out 1
MADI Out 2
RX
TX
TX
RS422
Port
UART to Merger Card
0...64 Ch
0...64 Ch
UART from Merger Card
User UART
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