Void Bias V3 User Manual

10.4 Network robustness
Bias Series amplifiers equipped with an AESOP are capable
of being networked routing both data and audio streams to
each other.
In dealing with networks of amplifiers, one of the most im-
portant aspects to consider, especially when working in a
critical application such as large venue sound distribution,
is the robustness of the network itself. Data and audio con-
nections can be made fault proof by means of some level of
redundancy.
The degree of redundancy expresses how many network
connections can break before sound is interrupted in any
one amplifier part of the system.
A zero degree redundant system is not robust: the first con-
nection to jump (either from a cable failure or even from an
amplifier problem) means the whole system goes down.
A one degree redundancy system, on the other hand, will
continue working automatically if one (but no more than one)
connection fails.
Bias Series amplifiers support up to two degrees redundan-
cy thanks to the adoption of proper networking topology: by
detecting any connection failure on both analog and digital
input Bias Series amplifiers are capable to automatically
(and almost instantaneously) modify the audio feed direction
to allow the output signal to remain uninterrupted.
The following section illustrates and analyses some com-
mon amplifier network topologies with different degree of
redundancy.
10.4.1 Daisy chain
Daisy chain is a wiring scheme in which multiple devices are
networked together in sequence, i.e. in series.
FIGURE 40 and FIGURE 41 show the diagrams of daisy
chain connections of 4 amplifiers with four and two AESOP
ports respectively.
In both configuration, only the first amplifier – feeded with the
digital signal via the AES3-XLR – is set in forward mode: any
other amplifier in the chain is a repeater.
Ethernet data are fed through any free port, either primary
or secondary, and conveyed to the AESOP with the AES3.
This daisy chain topology is not robust (zero degree of re-
dundancy). If any single AES3 or Ethernet cable connection
is interrupted, the whole system fails.
AESOP
AES3-A stream
Control data stream
Port 1
(primary)
Port 2
(primary)
XLR
AES3
AES3
source
Network
data input
Port 3
(secondary)
Port 4
(secondary)
Port 1
(primary)
Port 2
(primary)
XLR
AES3
Port 3
(secondary)
Port 4
(secondary)
Port 1
(primary)
Port 2
(primary)
XLR
AES3
Port 3
(secondary)
Port 4
(secondary)
Port 1
(primary)
Port 2
(primary)
XLR
AES3
Port 3
(secondary)
Port 4
(secondary)
Audio
Audio + Data
Audio + Data
Audio + Data
Data
Repeat AES3-A
from PORT 2 to PORT 1
Repeat AES3-A
from PORT 2 to PORT 1
Repeat AES3-A
from PORT 2 to PORT 1
Forward to AES3-A
1
2
3
4
FIGURE 39: Daisy chain - four port models.
AESOP
AES3-A stream
Control data stream
XLR
AES3
AES3
source
Network
data input
Port 1
(primary )
Port 2
(primary)
XLR
AES3
XLR
AES3
XLR
AES3
Port 1
(primary)
Port 2
(primary)
Port 1
(primary)
Port 2
(primary)
Port 1
(primary)
Port 2
(primary)
Audio
Audio + Data
Audio + Data
Audio + Data
Data
Repeat AES3-A
from PORT 2 to PORT 1
Repeat AES3-A
from PORT 2 to PORT 1
Repeat AES3-A
from PORT 2 to PORT 1
Forward to AES3-A
1
2
3
4
FIGURE 40: Daisy chain - two port models.
Bias Series User Guide V1.0
Page 28

Void Bias V3 Specifications

General

Brand	Void
Model	Bias V3
Category	Amplifier
Language	English