A key number transmitted by any MIDI synthesizer, sequencer or music computer will activate any RX21 instrument. For example, you can manually “play” the RX21 "drum kit” on a MIDI keyboard:

You could also program a series of key numbers into your computer or sequencer (like programming in a "melody" composed of the “pitches” corresponding to the RX21 instruments, as shown in the above diagrams). The sequencer/computer will cause the RX21 to perform rhythms or complex sequences, when you start playback of the programmed sequence.

To engage this mode, press the MIDI button three times. The LCD panel will show "CH INFO AVAIL”. You can now play the RX21 from an external MIDI source. This mode is active only while the LCD shows “CH INFO AVAIL”. To exit this mode, press any other main function button.

Key Number Reception3. SYSTEM lNFORMATlON AVAILABLE

In this mode, the RX21 can send or receive the entire contents of pattern and song memories, in the form of MIDI data, to or from another RX21. This means that, without having to use cassette save/load operations, you can quickly and easily transfer an enormous amount of pattern/song data.

To engage this mode, press the MIDI button four times, on both RX21 ‘s. The LCD’s will show "SYS INFO AVAIL”. You can now either receive or transmit MIDI data. To send data, press the +1/YES button on the RX21 that will transmit data. Its LCD will read “MIDI TRANSMIT?". Press the +1/YES button a second time to transmit data. Press -1/NO to cancel the MIDI transmit function and return the LCD to “SYS INFO AVAIL”.

During transmission, the transmitting RX21’s LCD will go blank for a few seconds while data is transmitted. It will then revert to the “MIDI TRANSMIT ?” display. The receiving RX21 will have its memory erased (excluding presets) and replaced by data from the transmitting RX21, and its LCD will change to "MIDI RECEIVED !". To exit this mode, press any other function button.

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