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X.200
Digital X Bus
I/O Cards
You can install the optional I/O cards in any of the
slots labeled A, B, or C, in any combination to suit
your particular application. You can confi gure the
cards in the I/O Confi guration window (Windows >
I/O Confi guration).
Refer to Appendix B for wiring diagrams of the
various connectors used on the I/O Cards.
1. MIC/LINE 4 CARD
This card provides four analog mic/line inputs on
female XLR connectors, and four analog line-level
inputs on 1/4" TRS connectors, for a total of eight
analog inputs. Note that this card does not provide
any outputs.
2. MIC/LINE 8 CARD
This card provides eight analog mic- or line-level
inputs and eight line-level outputs. Connections are
made through two 25-pin D-Sub connectors.
3. LINE CARD
This card provides eight analog line-level inputs
and outputs. Connections are made through two 25-
pin D-Sub connectors.
4. DIGITAL CARD
This card provides eight digital inputs and eight
digital outputs. Connections are provided in both
ADAT Multichannel Optical Interface and Tascam
T/DIF-1 formats.
The connection for ADAT is made with a fi ber op-
tic cable, sometimes referred to as “lightpipe.” This
connection provides eight channels of digital audio.
You can purchase this cable from your Alesis dealer,
Monster Cable, Hosa, or other cable manufacturer.
The connection for T/DIF-1 is made with a 25-pin
D-Sub connector. This connection provides eight
channels of bidirectional digital audio. This con-
nection requires a 25-pin D-sub cable (Tascam Part
Number PW-88D).
5. AES/EBU CARD
This card provides eight digital inputs and eight
digital outputs in the AES/EBU standard format. Con-
nection is made through a 25-pin D-Sub connector.
AES/EBU is a standard two-channel digital proto-
col used for long balanced cable applications. Thus,
each conductor actually transmits two channels of
digital audio data.
6. FIREWIRE CARD
The FireWire card uses the IEEE-1394 protocol
for connecting digital devices. It currently provides
24 inputs and 24 outputs of digital audio at 48 kHz,
and 8 inputs and 8 outputs at 96 kHz.
WORD
CLOCK
SYNC CARD
IN
OUT
IN
OUT
SMPTE
A
B
MIX OUT CARD
SPDIF
SPEAKERS
PHONES
MIX OUT
IN
OUT
IN
LR
12
LR
LR
OUT
AES/EBU
FIRE CARDDIGITAL CARD
OPTICAL
TDIF
I/O
IN A
IN B
OUT A
OUT B
MIC/LINE 4 CARD
5
7
6
8
1
2
3
4
MIC/LINE 4 CARD
5
7
6
8
1
2
3
4
MIC/LINE 8 CARD
IN
OUT
I/O
AES CARD
OUT
IN
LINE CARD
OUT
LINE CARD
IN
SYNC C • SLOTSD • SLOT B • SLOTS A • SLOTS