Amplifier; Computer; Mains Connection; Operation - IMG STAGE LINE DSM-480LAN Bedienungsanleitung

4.2 Amplifier

GB
Connect the power amplifiers or units for further
signal processing to the XLR connections OUT-
PUTS (20).

4.3 Computer

For remote control of the DSM-480LAN via a
computer, connect the computer via a USB
cable to the jack (10).
Alternatively, the unit may be controlled via
the RS-485 interface or Ethernet. For connection
via RS-485 connect the RS-485 output of the
computer to the jack RS-485 IN (17); the contact
configuration is shown in figure 2. The output
jack RS-485 OUT (18) may be connected to the
jack RS-485 IN of another DSM-480LAN in each
case. Thus, up to 32 units to be controlled may
be connected in a chain. If several units are con-
nected and longer control lines are used, the
control output of the last unit of the chain should
be provided with a terminating resistor (120 Ω
resistor between pins 1 and 2 of the connection)
to prevent interference during signal transmis-
sion.
For remote control of the unit by Ethernet
(TCP/ IP) the DSM-480LAN may be connected
via its jack RJ45 (16) to a single computer, a
local computer network or, e. g. via a router, to
larger computer networks. Up to 32 units may be
addressed in a network. For the correct setting-
up, knowledge of network technology is indis-
pensable.
Hint: For a direct Ethernet connection to a computer a
crossover cable is required.

4.4 Mains connection

Connect the supplied mains cable to the mains
jack (12) and the mains plug to a socket (230 V~/
50 Hz).

5 Operation

5.1 Switching on / off

Prior to switching on the connected power ampli-
fiers, connect the DSM-480LAN with the
POWER switch (11). The adjustments of the last
operation are loaded and the name of the last
configuration loaded from the memory is shown.
CAUTION The DSM-480LAN offers very flex-
ible possibilities of configuration.
For example, an output configured
for controlling a tweeter may
become the bass frequency out-
put in another configuration.
To prevent any overload of the speakers, prior
to switching on the power amplifiers, always
check if the configuration loaded of the DSM-
480LAN corresponds to the speaker constella-
tion connected.
After use, switch off the unit with the POWER
switch. All adjustments will be maintained.

5.2 System settings (System Utilities)

The DSM-480LAN is adjusted via a menu in the
display (1). The menu is called for the general
system settings by pressing the knob UTILITY
(5), the menus for the adjustment of the inputs
and outputs are called by the selection of the
input or output with the corresponding button
EDIT/ MUTE (6). To navigate through the menu
and to change the adjustments, press the knobs
ENTER (2), ESC (4) and turn the knob PM1 (2).
A menu item can be selected with the rotary
knob PM1/ ENTER; press this knob to call the
submenu or to confirm an input. Press the knob
24
ESC to return to the higher menu level without
accepting a change. To change parameters, turn
the two knobs PM2 (4) and PM3 (5). If the dis-
*
play shows behind an option, this corresponds
to the present adjustment.
An overview of the menu "UTILITY" is shown
in figure 3 on page 3.

5.2.1 Unit for signal delay

The signals of all inputs and outputs can individ-
ually be delayed. This is e. g. useful if speakers
are placed at different distances from the listen-
ers. To balance the delay time of the sound, the
signal of the speaker located nearby is delayed
so that it does not reach the listener earlier than
the signal of the speaker located far away.
To spare the user the trouble of calculating
the delay time of the sound, the delay can alter-
natively be entered not only as a time indication
but also as a distance. The device calculates
with a sound speed of 340 m / s.
1) Press the knob UTILITY (5) to call the menu.
System Utilities
is displayed.
2) To call this submenu, press the knob ENTER
(2).
Delay Units
is displayed.
3) To call this submenu, press the knob ENTER
(2).
4) Use the rotary knob PM2 (4) to define if the
delay values are to be entered as a time indi-
cation ( Unit : Time (ms)
Unit : Distance(m)
tance (
firm the selection by pressing the knob
ENTER.
5) To exit the menu, press the knob ESC (4)
twice. It is also possible to directly go to the
adjustment of an input or output with one of
the buttons EDIT/ MUTE (6).

5.2.2 Displaying the firmware version

To display the version of the firmware (operating
software of the DSM-480LAN):
1) Press the knob UTILITY (5) to call the menu.
System Utilities
is shown.
2) To call this submenu, press the knob ENTER
(2).
Delay Units
is shown.
3) Use the rotary knob PM1/ ENTER (2) to select
Software Version
the menu item
press the knob to confirm.
The version number is shown, e. g.
Version : V1.06
4) To exit the menu, press the knob ESC (4)
three times. It is also possible to directly go to
the adjustment of an input or output with one
of the buttons EDIT/ MUTE (6).

5.3 Configuring inputs

The signals of the inputs can already be
processed before they are distributed to the out-
puts. They run through the processing chain
shown in fig. 4.
5.3.1 Muting an input and
selecting it for the adjustment
Each input can be muted and also be selected
for the change of adjustments with the button
EDIT/ MUTE (6) below its level indication.
Press button for a while (approx. 2 s):
The input is muted or the sound is reacti-
vated. If an input is muted, the LED (7) above
the button shows red.
Press button shortly:
The input is selected or deselected. If an
input is selected, the LED above the button
shows blue.
To make adjustments for several inputs
together, in addition to the input already
selected, further inputs can be selected.
These inputs can be deselected again. If the
first input selected is deselected, all inputs
are deselected.
changed during linking are adapted. All indi-
vidual adjustments of the inputs are main-
tained.
When selecting an input, the display (1) shows
the last menu item called for this input in the
menu of the input adjustments (
menu items are selected and the adjustments
are changed with the knobs PM1/ ENTER (2),
PM2 / ESC (4) and PM3 (5).

5.3.2 Selecting a signal source

The unit has inputs for analog (21) and digital
(19) signals which can each be used alterna-
tively. For test purposes it is possible to select a
signal generated in the unit (white noise or pink
noise) instead of an input signal.
1) Select an input with its button EDIT/ MUTE
(6).
2) Select the menu item
rotary knob RM1/ ENTER and press the knob
to confirm. The present adjustment is shown
ƊSource = Analog
(e. g.
3) Adjust the desired signal source with the
rotary knob PM2. A change is effective imme-
) or as a dis- diately.
) and con-
Caution when switching over the test signals!
They used the full dynamic power and can be
of considerably higher volume than the signal
at the input.
Analog
Digital
Input A = S/PDIF 1, channel 1
Input B = S/PDIF 1, channel 2
Input C = S/PDIF 2, channel 1
Input D = S/PDIF 2, channel 2
White Noise
Pink Noise
4) To exit the submenu, press the knob ESC.

5.3.3 Noise Gate

A Noise Gate may be activated for each input.
Thus, low interfering noise whose level is below
and
the adjusted threshold value is suppressed in
signal intervals.
1) Select an input with its button EDIT/ MUTE
(6).
2) Select the menu item
knob PM1/ ENTER and press the knob to
confirm. The present adjustment is shown.
ƊNoise Gate = Off
(e. g.
On
3) Activate (
suppression with the rotary knob PM2. A
change is effective immediately.
4) To exit the submenu, press the knob ESC.
Note: The operating parameters Threshold,
Attack and Release for the Noise Gate can only
be changed by computer via the supplied control
programme (

5.3.4 Adjusting the amplification (Gain)

The level of an input signal may be adapted via
the adjustment of the gain in the range -18 dB
up to +18 dB.
1) Select an input with its button EDIT/ MUTE
(6).
2) Select the menu item
knob PM1/ ENTER and press the knob to
confirm. The present adjustment is shown
ƊGain = 0.0dB
(e. g.
Only the parameters
fig. 5). The
Source
with the
).
analog input
digital input
N Gate
with the rotary
).
Off
) or deactivate ( ) the noise
chapter 6.4.4.6).
Gain
with the rotary
).