Installation manual

Digital Transport AdvantagesSuperior Sound Quality
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EDIROL Video Equipment
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RSS Digital Snake Systems
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EDIROL Video Equipment
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RSS Digital Snake Systems
The superior quality and reliability of RSS Digital Snakes is made possible by coupling high quality preamps with
Roland’s REAC digital transmission technology. RSS Digital Snake systems are immune to the hums, buzzes
and general impedance and capacitive losses that plague analog snakes. By having the mic preamps close to
their source and by avoiding the transmission losses of long runs of analog cables, your audio has a chance
to sound its best throughout your whole system. The system provides superior clear sound, great intelligibility
with minimum latency and the freedom to easily split or extend your source audio. Digital Snakes are the next
generation of audio quality for concerts, corporate events, houses of worship and any kind of audio installation.
40-channel, 330’ Cat5e
cable for REAC
32-channel, 50’ Analog Cable
Simple and low cost installation with Cat5e cabling
REAC brings another revolution to audio installations by eliminating the need
to use thick, heavy and hard to handle analog multi-pair cables by transmitting
audio using light, slim and easy to handle Cat5e cable. On one very thin Ethernet
cable, REAC can transfer 40 channels of high quality 24bit/96kHz audio signal
plus MIDI and remote control signals. Since the cable used for REAC transfer is
ordinary Ethernet cable, the low cost and easy availability of the cable is a big
advantage compared with using analog cable. From temporary installations in
outdoor concerts to permanent installations in arenas or halls, REAC provides
the benefit of light weight, inexpensive and easy to install cable.
Very long distance snake systems can be designed using
an S-OPT REAC Optical converter
The S-OPT is a REAC optical converter that converts RSS Digital Snake
System REAC signals to and from optical signals for long distance digital audio
transmission. By using the REAC optical converter and optical cables (sold
separately), the REAC transmission distance can be extended to a maximum of
2 kilometers (1.2 miles).
Super low latency digital transmission
Degradation of the audio signal is minimal in any digital transfer system.
However, musicians, performers or even audiences may suffer from the
excessive latency of other digital transfer systems. REAC eliminates these
digital audio transmission problems with its super low latency. Even when
transmitting 40 channels at 24bit/96kHz/Linear, REAC’s latency is only
0.375ms*. This very low latency makes any RSS Digital Snake system perfect
for all audio installations, especially in-ear monitoring systems.
•REAC, based on the Ethernet 100BASE-TX protocol,
transfers signals using Cat5e cable.
•Durable and reliable connector made by Neutrik
•Up to 40 channels of 24bit/96kHz audio plus MIDI and
remote control data can be transferred in one cable.
* 0.375 ms is the REAC protocol latency. The A/D and D/A
conversions add a bit more for a total latency of less than
1.2ms, which is very low and well within the acceptable
range for all live audio applications.
■ Latency of digital transfer (one way)
Roland’s original Ethernet technology
REAC (Roland Ethernet Audio Communication) is newly designed technology
for digital audio transfer by Roland. The REAC spec provides a high quality and
safe, redundant digital audio transfer system that can be easily installed or inte-
grated for any audio snake application. REAC is a “plug and play” system that
is easy to configure and requires no complex setup or computer operation. Plug
in your mics, plug in the Ethernet cable and you’re ready to go!
ANALOG
(DIGITAL)
Analog Multi Cable
Digital Snake
Minimize a signal’s damage due to “noise pollution”
Hums and buzzes from external noise sources can often be a problem for
analog snake installation. It can be difficult to know where potential noise
sources might be before installing a snake. Solving subsequent noise problems
requires alot of experience and time. REAC provides an effective solution to
these installation problems. Technically, the risk of noise pollution such as the
induction of hums and buzzes into a digital snake is much lower than in an
analog snake, and cross talk is minimal or non existent. This provides almost
complete routing freedom for your cable installations.
ANALOG
(Digital)
Boost after transfer means
degradation and cross talk can be
created during analog transfer
Gain boost before transfer means
the best possible source audio is
then transferred in the snake
High Quality Pre-amps on each input channel
In an analog system, low-level microphone signals are boosted using a mic
preamp only after the long, arduous journey down the analog snake. For this
reason it’s difficult to avoid degradation and cross talk. The digital snake is
equipped with high quality and remote controllable pre-amps that boost the
input gain very close to the source, where the highest quality signal is found.
This ensures that your audio will sound its best. And of course once the signal
is in digital form, it is immune to analog cabling losses. The pre-amp has
been specially designed for live audio applications and is made of high quality
components carefully selected by Roland’s engineers.
S-4000S/H
Ordinary Mic cable (100m)
High quality and low noise digital transfer
In the analog domain, it is impossible to avoid signal degradation during long
distance audio transfer at concerts or events in large halls or arenas. Digital
transfer of REAC provides extremely flat and pure audio transfer for the whole
frequency bandwidth. Furthermore, additional audio benefits occur because the
source signal is transferred after boosting the gain using the high quality and
remote controllable mic pre-amps.
■ Parameters and
display on S-4000RCS
Parameters : Input channel gain,
Phantom power and PAD settings
Display : Level meters of all input
channels on one screen.
Remote Control by computers
A computer can be connected to the REMOTE terminals (RS-232C) of any
digital snake end. Once the S-4000RCS software* is installed, up to 160
channels of a snake system can be remote controlled from your computer
using up to 4 RS-232c ports.
* S-4000RCS software is free and downloadable from www.rssamerica.com.
Front of House
S-4000H
S-1608 SONAR REAC Recording System
S-4000R
STAGE
S-4000S
S-4000SP Splitter
Limitless splitting of all input sources
The RSS Digital Snake systems are designed to provide splits of source audio
using standard Ethernet hardware. Using a standard switching hub, you can
send source audio to multiple recording consoles, a monitor position, broadcast
location and more. No signal degradation will occur from the source’s master
output to the recording or any other split output.
40 Channels of Digital Recording
The SONAR REAC Recording System when used in conjunction with the RSS Digital Snakes
provides the most comprehensive live recording, mixing, mastering and delivery product
available. Capture up to 40 channels of audio from your Digital Snake/V-Mixing System
directly into SONAR all via a simple Cat5e connected to the network port on your PC.
Multi-Channel Digital Audio Transfer Systems