inout Dinplayer D01-MKII User Manual page 12

4. DINplayer with RS485 and amplified 20W MONO output.
The 20W mono amplifier can directly drive an external loudspeaker with the impedance
of 4 min. To set the amplified mode, lift the clamps cover and move the jumpers P3
Ω
and P4 like in figure.
Attention! Use a loudspeaker with equal or greater power than the one driven by the
internal amplifier. Do not place the audio connection cables close to the electric power
cables to avoid possible troubles.
To enable the serial port through the 11/485A and 12/485B pins, raise the cover of the
device and move the P1 and P2 jumpers of the diagram as indicated in the following
figure.
With the RS485 connection one must supply termination resistors on both extremes of
the line, to avoid the generation of stationary waves and to define the impedance of the
lines even in absence of transmission. DINplayer already has within itself a termination
resistor, enabled through a JP1 bridge jumper; to activate such resistance it is
sufficient to raise the cover of the device and move the JP1 jumper as indicated in the
figure.
RS485 and amplified MONO output.
DINplayer User Manual v.2.3
Page 11