powersoft K2 User Manual

Network operations | 27
10 : 4.Network robustness
K Series ampliers equipped with a KAESOP are capa-
ble of being networked routing both data and audio streams
to each other.
In dealing with networks of ampliers, one of the most
important 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 net-
work connections can break before sound is interrupted in
any one amplier part of the system.
A zero degree redundant system is not robust: the rst
connection to jump (either from a cable failure or even from
an amplier 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.
K Series ampliers support up to two degrees redun-
dancy thanks to the adoption of proper networking topol-
ogy: by detecting any connection failure on both analog and
digital input K Series ampliers are capable to automatically
(and almost instantaneously) modify the audio feed direc-
tion to allow the output signal to remain uninterrupted.
The following section illustrates and analyzes some
common amplier 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 ampliers with four and two AESOP
ports respectivelly.
In both conguration, only the rst amplier – feeded
with the digital signal via the AES3-XLR – is set in forward
mode: any other amplier in the chain is a repeater.
Ethernet data are fed through any free port, either pri-
mary or secondary, and conveyed to the AESOP with the
AES3.
This daisy chain topology is not robust (zero degree of
redundancy). If any single AES3 or Ethernet cable connec-
tion is interrupted, the whole system fails.
10 : 4.2 . Daisy chain with redundant AES3
A slightly more robust network with respect to the audio
system is the one illustrated in FIGURE 42 and FIGURE 43.
Two ampliers, the rst and the last one in the chain, are
set to work in forward mode. The remaining ampliers are
set to work in repeater mode.
Even if both the leading and the trailing amplier forward
the AES3 strem through the AESOP, there is no risk of data
collision; furthermore, all ampliers ara capable to switch
in real time to the best signal source in case of connection
failures.
This conguration implies the use of an AES3 patch bay
in order to feed with the same digital signal the leading and
trailing ampliers.
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 40: 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 41: Daisy chain - two port models.

powersoft K2 Specifications

General

Brand	powersoft
Model	K2
Category	Amplifier
Language	English