Apple Logic Pro 8 - Manual (Page 927)

Chapter 39 Working in the Environment 927
14 Bit
 Used in conjunction with pitch bend, this allows 2-byte (fine tuning) pitch bend
events.
 Used with controller messages, this causes the fader to send two MIDI controller
messages—one for the MSB (Most Significant Byte) and one for the LSB (Least
Significant Byte).
Note: The fader’s Input and Output definitions must be the same or the 14 Bit setting
will not work.
For controllers, the MSB uses the Input definition controller number, and the LSB uses
the controller number 32 higher. This conforms to the MIDI standard for sending 14-bit
controller data.
When this filter setting is chosen, the fader’s Range can be set to a maximum value of
16,383. A fader value of 8192 represents no pitch bend.
Feedback
When the Feedback parameter is turned off (unchecked), the fader will automatically
prevent feedback loops resulting from circular cabling (the fader remembers when a
specific MIDI event has passed through it and will not allow it to pass through again).
In some instances, you may want to enable feedback—to allow a MIDI event to change
a Cable Switcher’s position after it has passed through the switch, for example.
Checking the Feedback checkbox will allow this.
Vector Fader
Vector faders function like joysticks—they can be moved in two dimensions: up/down
and left/right. Each dimension generates its own MIDI events, so each time you change
the position of the crosshair with the mouse, two MIDI events are sent.
Most faders have Input and Output definitions (see “ Fader Functions: Range, Val As ” on
page 925) which determine the MIDI events sent by the fader (Output), and those it
reacts to (Input).