Chapter 29: FOH Rack Reference 213
IOx Section (Optional)
AES/EBU Digital Inputs and Outputs
These 4 pairs of stereo digital inputs and outputs are used for
hardware inserts, or for input and output of program material
at the front of house position. These connectors support
24-bit, 48 kHz digital signals. Input signals with other sample
rates are sample-rate converted to 48 kHz.
Analog Inputs and Outputs (9–16)
These 8 pairs of analog inputs and outputs increase the total
number of analog I/O on the FOH Rack to 16. These are bal-
anced, 1/4-inch TRS connectors.
Expansion Section
FWx Card (Optional)
The optional FWx card enables the D-Show FWx Firewire op-
tion, which provides recording and playback of audio with
Pro Tools LE.
HDx Card (Optional)
The optional HDx card enables the D-Show HDx Record and
Playback option for recording and playback of audio with
Pro Tools HD.
ECx Card (Optional)
The optional ECx card enables remote control of a D-Show
system using wired or wireless Ethernet network equipment.
Snake Output Section
Stage 1 (Standard)
The Snake card accepts the Digital Snake cable (Snake 1) and
an optional redundant cable (Snake 2) that connects the FOH
Rack to the Stage Rack, handling up to 48 channels of audio.
Stage 2 (Optional)
An optional second Snake card may be added to the FOH rack
to enable the use of a second Stage Rack, increasing capacity to
96 channels of audio. The second Snake card also supports an
optional redundant cable.
Snake Connectors
The FOH Rack Digital Snake connectors consist of two pairs of
BNC-style connectors (Snake 1 In and Out, Snake 2 In and
Out), and two pairs of signal status indicators.
Active LED Green LED lights to indicate that connection to
FOH Rack is active for the corresponding Snake. Only one
Snake can be active at a time.
Sig LED Green LED lights to indicate that signal is present on
the corresponding Snake.
All Snake LEDs flash when no Snake signal is present.
USB Ports
The FOH Rack has one external and one internal USB port.
Both are USB 2.0 ports that support iLoks, USB key disks, and
USB keyboards.
Figure 20. Audio connectors on FOH Rack, showing standard IO connectors (top) and optional IOx connectors (bottom)
R
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Analog Out
2TR Out
Mon Left
Mon Right
MIDI
Gain
AES SPDIF
2TR SPDIFOut2TR AES
In
+4 dBu
Analog In
+4 dBu
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Analog Out
+4 dBu
Analog In
+4 dBu
910111213141516
910111213141516
In
Out
Out
In
OutAES
1 2In
OutIn
OutIn
OutIn
L
2TR In
L
R
Com
Mic
P R
AES
3 4
AES
5 6
AES
7 8
IO x
IO
Digital I/O 1–8 Analog I/O 9–16
Analog I/O 1–8MIDI I/O
Com Mic
Com Mic Gain
Com Mic Phantom Power
Monitor
Outputs
2-Track Analog I/O
2-Track
AES/EBU I/O
2-Track
S/PDIF I/O
2-Track Digital
Format selector
IO
section
IOx
section
(Optional)
Input
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