NETWORKSOUND Mamba Manuel utilisateur
Intercom
HDTV
Audio Control
Data
Video
5.1/7.1
Surround
NETWORKSOUND
Mamba Product Manual
MediaNet
Copyright NetworkSound, Inc 2003-2008
Mamba Digital Snake Manual
Thank You for purchasing Mamba Digital Snake System. We hope this product manual covers
setup, operation and maintenance of Mamba Digital Snake System as well as answer to any
of your technical questions.
Index:
1. Mamba Digital Snake Features
2. Description of various features and sub system of Digital Snake
3. How to connect Mamba Digital Snake System (Point-to-point and Splitter)
4. Connecting Mamba with external Micpre’s
5. PR8E Micpre technical details
6. EP84 Micpre technical details
7. RS232 pass thru via Mamba digital snake
8. Mamba Digital Snake technical specification
9. Troubleshooting guidelines
10. Warranty information
11. Safety instructions
If you have any questions or comments to improve the Mamba Digital Snake system or
manual, please email or call NetworkSound, Inc @ info@networksound.com or 408 434 9393
The information contained in this manual is subject to change with out notice. No part of
this manual may be reproduced or photocopied or produced in web site or other electronic
forms or any kind with out prior written permission from NetworkSound, Inc.
Key Features:
• Plug and Play operation
• Uses Standard CAT-5/6 for synchronous delivery over distances up to 140 m, 450 ft
• Low latency (less than 200 microsec I2s-I2s)
• End to End Analog delay <600 microsec (96K) & <1 ms (48K)
• Built in cable redundancy
• DB25 Audio I/Os and Unity gain
• RS232 pass-through for remote control, etc
• Aux 1 and Aux 2 - Dedicated 2 pair of twisted pair for intercom, XLR or Internet traffic terminated on XLR or RJ45
• 48 or 96K sample rate selection
• Works with a standard switch for CAT-5/6 extension
• Works over any external media converter for fiber extension
• Managed Gigabit switch (VLAN) for Audio and other traffic over same CAT-5/6 or Fiber (CLICK HERE for More info...)
• Neutrik Ethercon for ruggedized CAT-5 connection
• Sleek rack-mountable boxes with solid steel body
• 2 year limited warranty
• Excellent customer support
• Stand alone operation and preconfigured I/O
• High-quality 24 bit uncompressed audio at 96 or 48 kHz
• No audio cross-talk, or ground loop problems
Cable redundancy: A piece of mind feature supported in NetworkSound digital snakes, cable redundancy is
supported between two Cat-5/6 cables. The failure of a cable is detected and transport is transferred to the redundant
Cat-5/6 cable automatically in less than 60 micro seconds, leaving no audible lapse in sound. If two working Cat-5/6
cables are connected, the Mamba automatically selects which is the primary and which is the redundant.
Mamba Digital Snake Manual
1
NetworkSound digital snake use our patent pending MediaNet protocol to deliver high quality synchronized audio over a standard
CAT-5/6 cable. MediaNet features include synchronous uncompressed audio delivery, built in CAT-5/6 cable redundancy, and
latency less than 200 microsecond (I2S to I2S) over 450 feet / 140 meter CAT-5/6 cable. Our digital audio snakes offer added
flexibility by supporting multiple configurations, including point to point, split and daisy chain. The snakes are plug and play, so
setup is quick and easy, making them ideal for installations where assembly and disassembly are frequent. We have several
configurations available in our Mamba line of Snakes. We also provide custom snake solutions
Mamba Digital Snake Manual
2
Example Mamba Setup:
Both the stage and the FOH Mamba use
DB25 connectors for input and output.
In this example setup, a guitar is
connected to the stage Mamba via a
1/4” to DB25 cable. A microphone is also
attached to the stage Mamba via a
microphone pre-amp. The microphone
is connected to the Mic-Pre via a regular
XLR to XLR cable, and the output from the
Mic-Pre is connected to the stage Mamba
via a DB25 to DB25 cable.
The stage Mamba is connected to the
FOH Mamba via two Cat-5/6 cables with
one cable being the primary, and the other
as a backup. The FOH Mamba is then
connected to a mixer using a DB25
to DB25 cable.
LED Indicators:
There are four LED indicators on the front
of each Mamba unit. The Power LED indicates
that the unit is powered on. The two Link LEDs
indicate if the Mamba has successfully been
linked via Cat-5/6 to another Mamba unit.
If both LEDs are lit, the Mamba units are
connected by both a primary and redundant
Cat-5/6 connection. If only one LED is lit, there
is only one primary connection between the
Mamba units. The Sync LED indicates that the
Mamba units are in sync. If there is a problem,
the Sync LED would either blink or OFF. In such
case, power on reset to all units should resolve the
problem.
Micpre’s
Mamba Digital Snake Manual
3
AC IN :- Power inlet. AC ~ 110 - 240 V Universal Power input. 50-60 Hz.
Typical power consumption: 16X16 :- 20W, 32X32 :- 30 W, 48X48 :- 40 W and 64X64 :- 50 W
Power Switch: On/Off switch to power on and off the unit. Power LED (RED) in front indicates that the
unit is powered.
Link 1 and Link 2 :- MedianNet Synchronized audio links. Connect one CAT-5 or CAT-6 cable per port.
Both ports are Neutrik ethercon for added strength and protect CAT-5 cable connection
These links MUSt be connected to another Mamba units for proper operation
The distance for CAT-5 is up to 140 meter or 450 feet.
RS232 :- Connect any RS232 terminal or device in to this port. The RS232 is pass thru, which means data
sent from one Mamba unit e.g stage box will be available on other unit e.g FoH unit.
The RS232 is set to 19200 bps, 8 data bits, no stop bits and no flow control. The RS232 is bi-directional so
you can send and receive data on each side simultaneously.
48 or 96 K option :- This option would select the sample rate of ADC and DAC for analog to digital conversion.
All units should be in the same sample frequency for proper operation. 16X16 and 32X32 units would operate
on 96K by default. 48X48 and 64X64 units would operate in 48k by default.
Analog In and Out: DB25 compatible with Tascam or Fostex provide a easy way to add 8 channels. each DB25
is 8 channel and you can use DB25 breakout cables with XLR Male, XLR Female or TRS breakout connectors
based on your other end of connection. DB25 provides an easy way to connect a mixing board that has
already DB25 analog or even DB25 breakout since it reduces cable at the FoH and Mon Mix boards.
Aux1:
2 pair of CAT-5 available for any use
Pass thru over Link 1 / FoH CAT-5
RJ45 Neutrik Ethercon or XLR F/TRS combo or
XLR M (Options)
RJ45 - 1,2,3,6 - Use for LAN or IP traffic
XLR - Hot, cold, and Ground Use for Intercom,
Analog pass thru
Available only when direct CAT-5 is connected
between mamba boxes
(won't work if any Ethernet switches in the middle)
Aux 2:
2 pair of CAT-5 available for any use
Pass thru over Link 2 / Mon
RJ45 Neutrik Ethercon or XLR F/TRS combo or
XLR M (Options)
RJ45 - 1,2,3,6 - Use for LAN or IP traffic
XLR - Hot, cold, and Ground Use for Intercom,
Analog pass thru
Available only when direct CAT-5 is connected
between mamba boxes
(wont work if any Ethernet switches in the middle)
Connecting the Mamba:
Point to Point:
The Mamba LLP (Line Level Point-to-Point) system is comprised of one “Stage” unit and one “FoH” unit. The
stage unit can be connected with up to 64 line-level audio input channels, and 64 outputs via its analog DB25
connections. Standard DB25 to XLR and DB25 to DB25 cables may be used, like those compatible with Fostex or Tascam
available from vendors such as Hosa and others. Connect the outputs from your micpre units or direct line level inputs
to the Inputs labeled Input 1-8 to Input 57-64. Same way, connect the outputs labeled Outputs 1-8 to 57-64 to your
mixer or speakers, etc.
Stage Unit FoH Unit
DB25 cable DB25 cable
Redundant Cat-5/6
Cat-5/6
Mamba Digital Snake Manual
Hosa
DTM-800
DB25-XLR
Hosa
DBD-300
DB25-DB25
4
Splitter:
The Mamba LLS (Line Level Splitter) system is comprised of one “Stage” unit , one “FoH” unit and one “Monitor Mix” unit.
The split system is available in 16X8X8, 32X16X16 , 48X24X24X24 and 64X32X32 configuration. For example, a 32X16X16
configuration allows you to split 32 inputs at the stage to FoH and Mon mix and able to receive 16 return channels from
FoH and Mon Mix units. The 16X8X8 and 32X16X16 system would operate in 96K sample rate, where as the 48X24X24
and 64X32X32 splitter system would operate in 48K sample rate.
The stage unit can can be connected with up to 64 input channels, and 64 outputs via its analog DB25 connections.
Standard DB25 to XLR and DB25 to DB25 cables may be used, like those compatible with Fostex or Tascam
available from vendors such as Hosa and others. Connect the outputs from your micpre units or direct line level inputs to the
Inputs labeled Input 1-8 to Input 57-64. Inputs connected to the stage box unit will be available to FoH and Monitor Mix units.
The audio is split in digital domain thus the quality and latency are identical to both receivers. Outputs on each of the units
labeled outputs 1-8 to 57-64 to your mixer or speakers, etc.
The returns from FoH and Mon are available at the stage outputs. For example, 32X16X16 splitter, 16 returns from FoH will be
avialable at the outputs named Outputs 1-16. The returns from Mon Mix would be available on Outputs 17-32.
Stage Unit
FoH Unit
Mon Mix Unit
Cat-5/6
Cat-5/6
Connects to Link1 / FoH
Connects to Link2 / Mon
16 Returns from FoH
16 Returns from Mon
Connecting the Mamba with Micpre:
Point to Point:
Connect all your inputs such as Microphones, instruments and CD players etc on Micpre inputs which is XLR/TRS combo.
From the back side of the micpre, connect a DB25 - TRS breakout cable (for PR8E) or DB25 - XLR F (for EP84) from the
outputs (channels 1-8) to Mamba stage box inputs. The 8 channel DB25 breakout cable is ideal for each micpre box
to Inputs on Mamba stage box.
Stage Unit FoH Unit
DB25 cable
DB25 cable
Redundant Cat-5/6
Cat-5/6
Mamba Digital Snake Manual
5
Splitter:
For splitter setup, folow the below diagram. The FoH unit CAT-5 cable connects to the Link1/FoH port on the stage box.
The Mon Mix unit CAT-5 connects to the Link 2/Mon port on the stage box. The channels from Stage box is sent to
FoH and Mon as split. The split is done in digital domain so latency is same and signal is identical at all receivers.
The returns at the stage box are configured as follows:
16X8X8: Outputs 1-8 are Returns from FoH (Link1/FoH) & Outputs 9-16 are Returns from Mon Mix
32X16X16: Outputs 1-16 are Returns from FoH (Link1/FoH) & Outputs 17-32 are Returns from Mon Mix
48X24X24: Outputs 1-24 are Returns from FoH (Link1/FoH) & Outputs 25-48 are Returns from Mon Mix
64X32X32: Outputs 1-32 are Returns from FoH (Link1/FoH) & Outputs 33-64 are Returns from Mon Mix
Stage Unit FoH Unit
Mon Mix Unit
Cat-5/6
Cat-5/6
Connects to Link1 / FoH
Connects to Link2 / Mon
Microphone & other inputs
EP84
PR8E
PR8E
DB25 cable
DB25 cable
DB25 cable
To Mixer
To Mixer
Mamba Pre Digital Snake Manual
PR8E Micpre Technical Specifications
6
8 x discrete microphone preamplifiers
Ultra-Wide Dynamic Range
Low-Noise Operating Levels
XLR/combo Inputs, TRS Outputs
48V Phantom Power per channel
Phase Reverse per channel
Gain control per channel
Peak Light Per channel
Mic Input:
Connector: XLR COMBO
Type: Balanced
Impedance: 4K7 Ohms
Min sensitivity: -60 dB
Peak input level: +9.5 dB
Phantom Power: +48V, (switchable)
Line Input:
Type: Balanced ¼” on combo
Impedance: 47K
Min sensitivity: -35dB
Peak input level: +32 dB
Output:
Connector: 1/4 jack (balanced TRS)
Type: Balanced
Impedance: 600 Ohms
Peak output level:+23dB
Frequency response:
20Hz- 20KHz 0dB- -0.5dB
Distortion: 0.005%
S/N: > 105dB
Crosstalk rejection:
>120dB @1KHz; -20dB input
Max Gain: 58dB
PR8E - Multichannel Microphone Preamplifier
The new PR8-E multi-channel mic/line preamp is the vanguard of the 'next-generation' in the SMPRO
range. Using the latest components available and redesigned from the ground up, the PR8-E's carefully
structured single circuit board design results is an exceptionally low noise pre-amp boasting a very high
gain structure. Tailored to suit a wide variety of applications, the PR8E is perfectly suited for use as a
front-end device for many hard disk recording systems, as well as adding additional mic pre's to digital
mixers and sound cards.
Each pre-amp features it's own XLR/TRS jack 'Combo' input connector, 48v phantom power switch for
the mic-pre and a built-in -20dB pad in the 1/4" (6.5mm) TRS line-in jack sockets. Individual phase
reversal switches are provided next to the eight balanced 1/4" (6.5mm) TRS output sockets on the
rear panel. All this is housed inside a hardened steel chassis, complete with rack mounting panels.
Each mic-pre provides some 60dB of gain with a massive 23db of maximum output! Ultimately however,
the quest is about sound quality. To this end, the PR8-E is certainly designed to deliver and will
outperform just about any other device in it’s class.
For more information on PR8E, Pls visit:
http://www.smproaudio.com/
Front view
Back view
Mamba Pre Digital Snake Manual
EP84 Micpre Technical Specifications
7
EP84 - Multichannel Microphone Preamplifier
The EP84 is the latest multi-channel microphone preamplifier from SM Pro Audio. Packed with
quality features and connectivity options, this sturdy 2RU rack-mountable unit is designed to provide
studio users with 8 channels of pristine microphone preamplification. The EP84 is the perfect front
end for computer audio systems, stand-alone hard disk recorders, or just about any other analog or
digital workstation. With all the functionality of a top line preamplifier, the EP84 features independent
variable gain control, -20dB pad, phase reverse, low cut filters, 48v Phantom power, and insert points
on each of the eight (8) channels.
Each mic-pre provides some 60dB of gain with a massive 23db of maximum output. Eight (8) ADAT
format channel outputs can be added to the EP84 via installation of the optional PR8IIA ADAT
output module. With this simple user installed option, the EP84 integrates superbly into today’s
digital studio environments without a hitch. Great for connection to the latest ADAT compatible
audio interfaces, the EP84 expands your recording possibilities. Why not make use of the features
you have and mic up the whole band!
8 x discrete microphone preamplifiers
Modular PCB design
Ultra-Wide Dynamic Range
Low-Noise Operating Levels
48V Phantom Power per channel
-20dB Pad per channel
Phase reverse per channel
Gain control per channel
Peak Light Per channel
80 Hz Low cut filter per channel
Insert points per channel
Mic Input:
Connector: XLR COMBO
Type: Balanced
Impedance: 47K Ohms
Min sensitivity: -60 dB
Peak input level: +9.5 dB
Line Input:
Type: Balanced ¼” on combo
Impedance: 47K
Min sensitivity: -35dB
Peak input level: +32 dB
Output:
Connector: 1/4 jack, XLR
Type: unbalanced, balanced
Impedance: 600 Ohms
Peak output level:+23dB
Frequency response:
20Hz- 20KHz 0dB- -0.5dB
Distortion: 0.005%
S/N: > 105dB
Crosstalk rejection:
>120dB @1KHz; -20dB input
Max Gain: 58dB
For nore info on EP84 micpre, pls visit:
http://www.smproaudio.com/
Front view
Back view
Mamba Digital Snake Manual
The RS232 port (DB9 female connector) is available in Mamba Digital Snake for connecting
number of terminals such as remote control, PC, terminals, Intercom terminals and other
devices that are equipped with RS232 communication.
The RS232 feature in Mamba Digital Snake is a pass thru communication. This means, any
device that supports RS232 can plug in on one side of the Mamba Digital snake (e.g FoH)
and communicate to other side of snake (e.g Stage). The information sent by the FoH side
will be available on the Stage Box RS232 port. All information sent by a device at one end is
available at the other end with out any modification.
The RS232 port available on Mamba Digital Snake is bidirectional, which means both
devices at either end of RS232 can send and receive information at the same time.
The settings for RS232 are: [You need to set these on your terminal on both ends prior
to any RS232 control communication]
Baud Rate: 19200 kbps
Data: 8 bits
Stop bits: 1
Parity: None
No flow control (both Software and Hardware)
Mamba Digital Snake will support only the above settings for proper operation. Also, note
that Mamba does not guarantee the control information. It is important that any application
that wishes to use RS232 has in-built handshake such as ACK (message received OK) and
NAK (message is not Ok) for any control message sent to other side. This simple verification
would allow you to have a guaranteed control communication.
RS232 feature in Point-to-Point Mode:
When Mamba is connected in point-to-point mode, RS232 feature is between Stage and FoH.
RS232 feature in Split Mode:
In Split Mamba system, the RS232 feature is available from FoH box to Stage box. The RS232
feature is not available between Mon Mix and Stage box.
If you have further questions on RS232, please call or email NetworkSound technical help
for answers.
8
RS232 Serial Communcation Feature
Table des matières
