If you are not able to trigger an external synthesizer or sound module connected to the Axiom's MIDI Out port, either from the keys or from a computer sequencer, it is most likely because you do not have the MIDI Out from USB function properly set.

MIDI Out from USB can be used to switch the source of the MIDI data seen at the MIDI Out port of your Axiom.  On initial power up, MIDI Out from USB mode is off.  This means that as you play your Axiom, MIDI data will be sent to the MIDI Out port.  If you turn MIDI Out From USB mode on, playing your Axiom will no longer send data to the MIDI Out port.  The data is instead streamed from the computer.  So, as long as you have selected your Axiom as the active output port in your computer’s sequencer, this is the data that will be sent the MIDI Out port. 

For example, if you want to control a sound module from your Axiom, you should ensure MIDI Out from USB remains off.  If you want the sound module to play data streamed from your computer however, then you should turn MIDI Out from USB on and ensure that the output port for your Axiom is selected as the computer’s MIDI output device (this is done in your computer software).  The following diagrams clarify the routing of MIDI data when MIDI out from USB mode is both off and when it is on:




To control MIDI out from USB mode:

49- and 61-note versions:
 

• Press Data 2 and Data 3 together to change the MIDI Out setting to MIDI Out from USB.
• You will see a MIDI plug symbol appear on the LCD display.
• To turn MIDI Out from USB mode back off, press the same button combination again. When you do this, the MIDI plug symbol disappears.
   

25-note version:
 

• Press the Advanced button.
• Press the MIDI Out key to activate MIDI Out from USB.
• You will see a MIDI plug symbol appear on the LCD display.
• To turn MIDI Out from USB mode back off, repeat these steps. When you do this, the MIDI plug symbol disappears.