7.3.3 Demo mode
Even when no unit is connected to the com-
puter, it is possible to create a virtual unit
for demonstration purposes. To do so, call
up the menu item “Tools
±
Enter Demo
Mode”.
Various virtual units with the additional
designation “DEMO…” will be added to the
list. As for real units, the button
can be
used to call up the configuration window
(
fig. 8).
To remove the virtual units from the list,
call up the menu item “Tools
±
Leave Demo
Mode”.
7.3.4 Firmware update
The control program and the unit must be
equipped with matching firmware versions
to ensure smooth communication. If the
version of the control program is newer, the
firmware (operating system) of the units
may be updated via the control program.
With this update, all settings saved on the
units will be lost. To keep the settings, save
them on the computer (
chapter 8.11)
before starting the update.
Note: Firmware updates are performed at your
own risk. After the update, the functions of the unit
may differ from those described in the instruction
manual.
CAUTION: Switch off the signal sources or
reduce their output level to avoid an unex-
pectedly high volume after the settings
have been reset.
To update the firmware of a unit, call up the
menu item “Tools
±
Enable Update”. In the
list, the symbol
will appear after the
units. Units with a grey symbol cannot be
updated (e.
g. because the units are
already equipped with the current firmware
version or because the access rights do not
allow for an update).
Note: Units connected via the USB interface can-
not be updated. To update these units, connect
them via the Ethernet interface.
Units with an orange symbol can be up -
dated:
1) Click the button
in the row of the cor-
responding unit.
2) A message will appear which informs
you that it is not allowed to switch off the
unit or to interrupt the connection during
the multi-step update process. If the
update fails, it must be started again.
Click [OK] to start the update, or click
[Cancel] to cancel it.
3) Upon completion of the update, another
message will appear. Confirm this mes-
sage.
To hide the update symbols in the list
again, call up the menu item “Tools
±
Dis-
able Update”.
Note: Resetting to the factory settings will also
affect the network settings and the passwords of
the unit, i. e. it may initially not be possible to
access the unit via the computer.
When the unit is in the access level “Devel-
opment”, the firmware may also be
up -
dated via the menu of the configuration
window (Hardware
±
Firmware Update).
7.3.5 Exiting the program
To exit the program, call up the menu item
“File
±
Quit” or close the program window.
8 Configuring the Amplifier
To configure the amplifier, click the button
(
figs. 5, 6) in the appropriate row of
the list.
The configuration window (fig. 8) with
the view MAIN for the unit selected will
appear. The colour field on the left-hand
side, next to LINK
, will indicate the con-
nection status of the unit. When the colour
field is green, a data connection has been
established. A red field will indicate that the
connection has been interrupted and that it
is not possible to modify settings. If the user
tries to make changes, an error message
will appear.
Any settings changed on the screen will
be instantly transferred to the amplifier pro-
vided that a data connection exists. The
settings can be saved as presets on the
computer and in the amplifier (
chap-
ter 8.2). In addition, it will be possible to
define if the amplifier, when being switched
on, is to load a specific preset or the state it
was in when switched off (
chapter 8.10).
If allowed by the access rights of the
current preset (
chapter 8.7.3.), the
buttons on the left side bar can be used to
go to the other views (X-OVER, IN 1/2,
OUT 1/2/3) [figs. 9 – 11]. To return to the
main view, click the button MAIN.
8.1 Signal path
Figure 7 shows a block diagram of the path
a signal takes through the amplifier. Start-
ing at the inputs, the signals, after analog /
digital conversion, pass the input amplifier
(GAIN), a high pass filter (HPF), a low pass
filter (LPF), the 10-band sound adjustment
(PEQ), the signal delay (DELAY), a dy-
namic range compressor (COMPRES-
SOR) and the level limiter (LIMITER). For
each of the three output channels, an indi-
vidual mixed signal can be created from the
two input signals processed. The mixed
signal will have the same processing op-
tions as the signals of the input channels
and additionally the phase inversion option
(PHASE INVERT); after processing, the
mixed signal will be routed to digital / analog
conversion. The output channels OUT 2
and OUT 3 will be routed to the speaker
outputs via the class D power amplifiers.
The output channel OUT 1 will lead to the
line level output “OUT-1”.
The parameters of the blocks shown
can be set in the views MAIN, X-OVER,
IN 1/
2 and OUT 1/2/
3. Some of the
pa -
rameters can be accessed via several
views.
Note: The setting options available depend on the
access rights of the current access level (
chap-
ter 6.1). To be able to make all settings, go to the
access level “Development” when calling up the
control program for the first time. This level allows
you to define the access rights and passwords for
the other access levels as required by the users
who will operate the unit (
chapter 8.7).
Attention!
Combined with the control program, the
signal processor is an effective tool for
making very detailed but also major
changes to the transmission properties of
the PA system.
Therefore, each modification to the
parameters should be performed with
care and expertise. At the worst, extreme
changes to the settings may damage the
speakers.
18
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