32
the M 5.4DSP will not reproduce any audio output
until the device is updated via the DSP PC-Tool
software.
7
Status LED
The
Status LED
indicates the operating mode of the
amplifier and of the DSP memory.
Green:
Amplifier is ready for operation.
Orange:
Power Save Mode is active.
Red:
Protection Mode is active. This may have dif-
ferent root causes. The amplifier is equipped with
protection circuits against over- and undervoltage
as well as overheating. Please check for connecting
failures such as short-circuits or other wrong con-
nections.
If the amplifier is overheated the internal tempera
-
ture protection switches off the remote and signal
output until it reaches a safe temperature level
again.
Red
/
green
slow flashing:
No operating soft-
ware installed. Connect the amplifier to the DSP
PC-Tool software and confirm the automatic up
-
date of the operating system. You will find the
latest version of the DSP PC-Tool software at
www.audiotec-fischer.com.
Red
/
green
fast flashing:
The currently selected
sound setup memory is empty. A new setup has to
be loaded via the DSP PC-Tool software or switch
to a memory position with existing sound setup.
8
Line Output F - I
Processed 4-channel pre-amplifier output with a
maximum output voltage of 3 Volts for connecting
additional power amplifiers. Please make sure that
you always turn on / off external amplifiers using
the remote output (
Remote Out
) of the M 5.4DSP.
Never directly control the external amps by a sig-
nal from the ignition switch of your car! Additionally
this output will be turned off when the “Power Save
Mode” of the amplifier is active. The outputs can be
assigned to any of the inputs as desired using the
DSP PC-Tool software.
Attention:
Solely use the connection cable which is
included in delivery for the connection of additional
amplifiers (see page 34, fig. 3)!
9
Optical Input
Optical input in SPDIF format for connecting signal
sources with a digital audio output. The sampling
rate of this input must be between 12 and 96 kHz.
The input signal is automatically adapted to the in-
ternal sample rate. In order to control the volume of
this input, we recommend to use an optional remote
control or the WIFI CONTROL.
Note:
This amplifier can only handle stereo input
signals and no MP3- or Dolby-coded digital audio
stream!
Note:
The manual activation of the
Optical Input
via
an optional remote control is configured ex works.
10
SCP (Smart Control Port)
This multi-functional connector is designed for
MATCH accessory products like a remote control
which allows to adjust several features of the am-
plifier. Depending on the type of remote control, the
functionality at first has to be defined in the “Device
Configuration Menu” of the DSP PC-Tool software
or on the remote control itself.
Attention:
If the accessory product does not have
a NanoFit connector solely use the NanoFit adaptor
which is included in delivery for connection.
NanoFit adaptor
Initial start-up and functions
