// Virtual channel configuration DigitalChannel { Name: stim_on Ref: UPPT001 mask: 255 pattern: 1 Offset: 0 } DigitalChannel { Name: accelerate Ref: UPPT001 mask: 255 pattern: 2 Offset: 0 } DigitalChannel { Name: stim_off Ref: UPPT001 mask: 255 pattern: 3 Offset: 0 }