Date printed: 24.01.12
38
D21m System
6.3.2 MadI I/O Cards
(
and
)
A949.0430, A949.0431, A949.0433
The MADI I/O cards can establish a 64-channel MADI input and output to the
D21m frame, with 44.1/48/88.2/96 kHz operation. Three different versions
are available:
A949.0430xx
Optical / multi-mode fibre
A949.0431xx
Optical / single-mode fibre
A949.0433xx
Twisted-pair (+ additional word clock out).
A949.0430 A949.0433
A949.0431
Optical inputs and out puts are provided on SC connectors. The version with
RJ45 connectors for twisted-pair cable features 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.
Please note that
in this mode the two cables may only be used to connect from one MADI card
to another MADI card (i.e. it is not possible to link 32 channels to one MADI
card, and the other 32 channels to a different one).
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
(A949.0430, multi-mode fibre, wavelength
1300 nm*, ø either 62.5 or 50 μm)
2 km
(A949.0431, single-mode fibre, wavelength
1300 nm*, ø
9 μm)
15 km
(A949.0433, CAT5e or better, flexible braid)
75 m
(A949.0433, CAT7, solid core)
120 m
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
*
different wavelengths on request
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