Connections
A-100CGK Rear view
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9V DC (power supply)
A-100CGK
does not have a built-in power supply. Instead it uses a plug-in type
external power supply (AC adapter). One reason for this feature is electrical safety.
Keeping danger voltages (mains) out of the
A-100CGK
increases the electrical
safety. Another reason for the external power supply is the fact that line voltages and
plug types vary considerably from country to country. Using a plug-in external supply
the
A-100CGK
can be used anywhere with a locally purchased power supply, thus
keeping the retail price down.
In Germany a VDE approved power supply is included with the
A-100CGK
. In other
countries a power supply with suitable mains voltage and mains connector has to be
purchased separately by the user provided that the dealer resp. representative does
not enclose the power suppy. The power supply must be able to deliver 7-12 VDC
unstabilized voltage, as well as a minimum current of 250mA. The correct polarity of
the DC voltage connector is: outside ring = GND, inside lead = +7...12V. An external
power supply of high quality and safety should be used.
The
A-100CGK
is switched ON by plugging the AC adapter into a wall outlet and
connecting it to the appropriate jack of the
A-100CGK
. There is no separate ON/OFF
switch. If the polarity of the power supply is incorrect, the
A-100CGK
will not function.
However, there is no danger of damage to the circuitry since it is protected by a
diode.
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Midi Out
This socket outputs the information generated by the
A-100CGK
in addition as midi
messages on midi channel 1. Polyphonic note on/off messages with velocity and
monophonic after-touch messages are generated. The
A-100CGK
was not planned
as a midi keyboard but the midi output can be used to control other A-100 devices
where midi note on/off data are used (e.g. the planned keyboard/sequencer controller
or an analog arpeggiator with midi input). 0V control voltage at output CV1
corresponds to midi note number 36.
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Midi In
This connection is not used so far.
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