Doepfer PK88 Midi Masterkeyboard (new version with USB) - Manual (Page 3)

PK88/USB User's Guide - Page 3
• All cables connected with the instrument must be checked periodically. If there is any damage the cables
must be repaired or replaced by an authorized person.
• Never place heavy objects on the instrument.
• Never use the instrument in the immediate proximity of interfering electronic devices (e.g. monitors,
power supplies, computers) since this could create disturbances within the instrument.
• The exchange of electronic parts (e.g. EPROMs for software update) is allowed only if the instrument is
disconnected from power supply.
• The instrument should only be shipped in the original packaging. Any instruments shipped to us for
return, exchange, warranty repair, update or examination must be in their original packaging! Any other
deliveries will be rejected. Therefore, you should keep the original packaging and the technical
documentation.
• When using the instrument in Germany, the appropriate VDE standards must be followed. The following
standards are of special importance: DIN VDE 0100 (Teil 300/11.85, Teil 410/11.83, Teil 481/10.87),
DIN VDE 0532 (Teil 1/03.82), DIN VDE 0550 (Teil 1/12.69), DIN VDE 0551 (05.72), DIN VDE 0551e
(06.75), DIN VDE 0700 (Teil 1/02.81, Teil 207/10.82), DIN VDE 0711 (Teil 500/10.89), DIN VDE 0860
(05.89), DIN VDE 0869 (01.85). VDE papers can be obtained from the VDE-Verlag GmbH, Berlin.
3. Power Supply
The PK88 does not have a built-in power supply. Instead it uses a plug-in type external power supply (AC
adapter) or is powered via USB. The connector for the external power supply is labeled 9V DC. The
primary reason for this feature is the fact that line voltages and plug types vary considerably from country to
country. Using a plug-in external supply the PK88 can be used anywhere with a locally purchased power
supply, thus keeping the retail price down. The PK88 is switched ON by
• plugging the AC adapter into a wall outlet and connecting it to the appropriate jack on the back of the
case labeled 9V DC
• or connecting the the USB connector of the PK88 via a suitable cable (A-B type) to a computer with
USB interface. The computer has to be able to deliver at least 100 mA current at the USB socket.
There is no separate ON/OFF switch. PK88 sold in Germany do include an AC adapter for 230V mains
supply. In other countries the power supply may be not included with the PK88 and must be purchased
locally by the user. The power supply must be able to deliver a voltage of 7-12 VDC (unstabilized), as well
as a minimum current of 100mA. The pin-out of the XLR connector is shown in the appendix.
4. Midi Connector
The Midi out socket is located at the rear panel. If the sound generation unit has to be controlled via Midi
(e.g. Midi Expander, Synthesizer, Sampler) this socket has to be connected to Midi In of the sound
generation unit via a suitable Midi cable. If only USB is used this socket remains unconnected.
5. USB Connector
The USB socket is located at the rear panel. If the sound generation unit has to be controlled via USB (e.g.
a computer with USB interface and suitable software) this socket is connected to the USB host via a
suitable USB cable (type A-B). As soon as the PK88 is connected to a powered computer via USB the
power supply takes place via USB and the external power supply (see 3.) is no longer required. The
computer has to be able to deliver at least 100 mA current at the USB socket. The USB interface transfers
the same data as the Midi output socket (see 2.).
6. Connection of the Foot Switch
Located on the rear of the keyboard case is a socket for connecting a single or double foot switch. It is
labelled Foot Switch. Do not connect the footswitch unless the PK88 is switched OFF. The two foot
switches have SUSTAIN (Midi controller #64) and SOFT PEDAL function (Midi controller #67). If a single
foot switch is used only the SUSTAIN function is available. A suitable double foot switch is e.g. the Doepfer
VFP2.