LA4X
Amplified Controller
user manual
VERSION 4.0
LA4X_UM_EN_4.0
w w w . l - a c o u s t i c s . c o m
40
4.11.1
NETWORK ADDRESS
Remote control of amplified controllers requires setting up a private local area Ethernet network to interconnect up to
253
units
with a single control
computer
(and possible additional devices such as Ethernet switches). It is called
L-NET and uses a proprietary communication protocol based on TCP/IPv4 called L-COM. The
IP addresses
on the
units
are class C addresses and must be set manually. The default
subnet
for L-NET is 192.168.1.0.
IP address setting
Each
unit
must be given an
IP address
that is not already in use by another device on the network.
For practical reasons, it is suggested to start numbering the
units
at
192.168.1.1
and then
192.168.1.2
,
192.168.1.3
… and manually set the control
computer
on
192.168.1.254
.
An
IP address
is a unique identifier for a network device on a given IP network. In IPv4 networking, it is made
of 4 bytes. In class C private local area IP subnets, the three first bytes are the network prefix and the last byte is
the device identifier on the subnet. Regarding device identifiers, two numbers are reserved: 0 for designating the
subnet, and 255 to communicate with all devices of the subnet (aka the IP broadcast address).
To select the
IP address
of a controller, follow these steps:
From the main menu select
OPTIONS
and press the
OK
key or the
encoder wheel
(or
ESC
to abort).
1.
Press the
OK
key or the
encoder wheel
to enter the
NETWORK ADDRESS
page (or
ESC
to abort).
2.
Turn the
encoder wheel
to select a value for the last byte.
3.
Value setting resolution
Turn the
encoder wheel
to obtain a 1-step resolution.
Press and turn the
encoder wheel
to obtain a 10-step resolution.
Press the
OK
key to validate the setting (or
ESC
to abort).
4.
For example, in Figure 39 the
IP address
has been modified from
192.168.1.110
to
192.168.1.123
.
Subnet modification
According to the network administration requirements the default subnet (192.168.1.0) can be modified
entering new values for the three first bytes as follows:
Long-click on the key located just below the number to modify until it is selected.
1.
Turn the
encoder wheel
to select a new value and press the
OK
key to validate.
2.
Repeat the procedure for all numbers to modify.
3.
4.11.2
DELAY UNIT
Delay values can be displayed in
ms
(milliseconds),
SAMPLES
,
METERS
or
FEET
. The values in meters or feet are
given for a temperature of 20 °C.
To select the
delay unit
follow these steps:
From the main menu select
OPTIONS
and press the
OK
key or the
encoder wheel
(or
ESC
to abort).
1.
Turn the
encoder wheel
to select
DELAY UNIT
.
2.
Press the
OK
key or the
encoder wheel
to enter the page (or
ESC
to abort).
3.
Turn the
encoder wheel
to select the chosen setting.
4.
Press the
OK
key or the
encoder wheel
to validate the setting (or
ESC
to abort).
5.
For example, in Figure 39 the
delay unit
has been modified from
ms
to
METERS
.
