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NEDSP1062-KBD Operating Manual
2.4
Controls.
2.4.1 PCB.
The level controls provide adjustment for the audio levels
entering and leaving the module. The modules are factory
set to the maximum level.
Turning the potentiometers clock wise will decrease the
levels. These potentiometers do not have end stops, so
it is possible to set them in a position where the audio
will be lost.
Audible indication of operation is provided by an piezo
sounder. The volume of this sounder can be varied by
potentiometer P3. The sounder volume is independent
of the incoming audio volume.
2.4.2 Keyboard.
The keyboard controls all of the module functions
including power on/off.
2.
Module description.
Figure 9. NEDSP1062-KBD keyboard.
Power button
(power and
Audio bypass)
DSP
level
button
Tri colour
LED
Mounting hole
