Recalibrate a usb keyboard for mac

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INSTRUMENT PRESET The Instrument button assigns all controls to instrument parameters once an instrument track is selected in your DAW. Pressing either split or layer while pressing the Transpose buttons will change the setting currently assigned for the corresponding zone. Choices include sending out MIDI Program Messages, change the Global MIDI Channel or select any of Impact LX88+’s 5 user presets with either the Octave or Transpose buttons. A key combination makes assignment quick and easy with the LED display telling you which function you have selected. Four functions are selectable on the fly so you can make important changes at any time, even while you play. This is where the 2 Transpose buttons below the Split and Layer buttons come in. Each zone can be programmed to send on it’s own unique MIDI channel with essential settings either pre-programmed or adjustable during performance. When split or layer is active, the corresponding LED button is lit so there is no confusion. Press Layer to add the layer zone and split to add the split zone. The Impact LX88+ keyboard can send on up to 3 zones at the same time.