USER MANUAL
i - S E R I E S
i - S E R I E S
a d v a n c E d a m p l I f I E R S
P.14
4 OPERA
TION
4. Operation
4.1 User Interface Elements
l
NOTE
This chapter only describes the basic user interface operation and
functions.
Please refer to the separate DSP Control manual for an expla-
nation of the extensive Digital Signal Processing (DSP) options and
advanced features offered by the remote application.
4.1.1 Signal- / Protect-LEDs (multifunctional)
The Signal-LEDs are illuminated in green when the voltage level at the
output reaches approx. 4 V; this corresponds to a power of 4 W into a 4 Ω
load. The channel Signal-LEDs are illuminated red when the amplifier is in
Protect Mode (Mute), for example because of persistent DC-voltage at the
outputs or overheating.
When switching the amplifier on, the Signal-LEDs will also light red for
a few seconds while the DSP is starting up (along with the Clip-LEDs).
In case the FuseProtect limiter is activated, it is possible that the (green)
Signal-LED’s will glow in orange or red colour for short periods of time
while the amplifier is playing music.
à
See also chapter 4.5.5 Fuse Protection
4.1.2 Clip-LEDs (multifunctional)
The colour of the bi-coloured LED changes between orange and red,
depending on the clip intensity. Orange indicates light clipping, red indi-
cates heavy clipping. These LED’s exclusively indicate hardware clipping
of the power amplifier stage. Possible internal DSP limitation and compres-
sion is not indicated here.
4.1.3 CHANNEL Buttons
The CHANNEL buttons allow to select the channels to make adjustments
on. Selectable items are
In 1
to
In 4
and
Out 1
and
Out 2
(depending on
user and access rights). Note that if channels are linked the settings will
always affect both linked channels. In this case the channel selection will
display
In 12
,
In 34
or
Out 12
.
4.1.4 ITEM Buttons
The ITEM buttons allow you to navigate trough all parameters which can
be set from the front panel. Note that currently only a small choice of
parameters can be set from the amplifier user interface. For full access
on all settings and parameters please use the DSP Control remote control
application. The parameters are:
Gain
à
Gain settings in 0,25 dB steps
*
Source
à
Selects the source of the chosen input channel:
Analog
AES Channel 1
AES Channel 2
AES Mono Sum
AES Stereo
Delay
à
Signal delay settings
link
à
Selects if Input 1 & 2, Input 3 & 4 or Output 1 & 2 shall be
linked
*
Smaller steps (0,01 dB) can be set via the DSP Control remote application.