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Cautions:

Always turn off power to your MD- 1150 and the other MIDI device before you connect or disconnect MIDI cables.

As you make the cable connections, be sure to align the MIDI cable pins with the matching holes on your keyboard’s MIDI OUT and MIDI IN ter- minals. If you have trouble plugging in the cable, do not force it! You might damage the plug or the instru- ment.

To send MIDI data from your keyboard, use a MIDI cable to connect the MD- 1150’s MIDI OUT terminal to the other device’s MIDI IN terminal.

To receive MIDI data on your keyboard, use a MIDI cable to connect the MD- 1150’s MIDI IN terminal to the other de- vice’s MIDI OUT terminal.

Note: You do not need to make both connections if you are only either send- ing or receiving.

MIDI DATA

Your MD-1150 can send and receive several different types of MIDI data. The MD-1150’s tones, rhythms, and other types of MIDI data are sent automatical- ly as you play.

Notes:

The MD-1150’s prerecorded tunes cannot be sent as MIDI data.

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For detailed specifications of the MIDI function, see the “MIDI Imple- mentation Chart” on Page 34.

Note On/Off — specifies which keys are pressed (Note On) or released (Note Off). Also includes how loud a note is played as a value from 0 to 127.

Notes:

The pitch of a note depends on the tone that is being used, as shown in the “Note Table” on Page 33.

If the keyboard receives a “request” to play notes outside of its range (higher or lower), it automatically selects the same note in the nearest octave.

Program Change — specifies the tone. The keyboard sends program change data in the range of 0 to 99, correspond- ing to tone numbers. It receives data within the same range if GM tone map- ping is set to N, or in the range of 0 to 127 if GM tone mapping is set to G. In the latter case, tones in the range of 100 to 127 are translated to the closest tone that the keyboard has.

Pitch Bend — supplies pitch bend infor- mation. The keyboard’s pitch changes as it receives a Pitch Bend message through the MIDI IN terminal.

Control Change — adds effects such as vibrato and volume changes applied during keyboard play. The message in- cludes a control number (the effect type) and a control value (the on/off and depth of the effect).

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Optimus MD-1150 owner manual Midi Data