Page 16
NEDSP1062-KBD Operating Manual
Figure 13. Basic connection diagram
3.1
Installation overview.
The
NEDSP1062-KBD
module is inserted into the path
of noisy audio. The input and output level controls allow
the module to be fine tuned to suit most applications.
3. Installation
Audio in
Power amp
+
-
Break Circuit
here
Audio Out
(Loudspeaker)
The input to the module is loaded at 22
W
to provide a
dummy load to the preceding circuit. This can be removed
if required, such as using the module in applications
where the audio source is provided by a low level, low
power signal source. More information on this can be
found in section 3.3 in this operating manual.
If V
in
is less than approx. 13.8V ensure the power supply
is well decoupled otherwise the power supply rejection
ratio will deteriorate. Best results are obtained in the
range of 13.8V - 16Vdc.
Audio in
NEDSP1062
Power amp
+
-
IN
Agnd
Agnd
OUT
Keyboard
Power
10
12
9
11
Black
Piezo
sounder
Blue
Red
Black
3.
Installation.
