What is a device control protocol – Apple Final Cut Pro 5 User Manual
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Chapter 25
Device Control Settings and Presets
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IV
 If you’re using FireWire: Choose Apple FireWire or Apple FireWire Basic, depending
on your connected device. The Basic version is a simplified device control protocol
for camcorders and decks that aren’t fully compatible with Apple FireWire.
Choosing the Basic protocol will not affect the video or audio quality of your
captured media.
 If you’re using serial device control: Choose an option based on the equipment
you’re using. To find out which device control protocols are supported, see the
documentation that came with the equipment. For more information on serial
device control, see “
 Audio Mapping: This pop-up menu determines how many audio tracks are available
in the Audio Insert pop-up menu in the Edit to Tape window. You should choose a
track mapping that corresponds to the number of tracks available on your audio or
video deck. The options available depend on the device control protocol you’ve
selected.
 If you’re using FireWire: When using one of the FireWire device control presets, the
Audio Mapping pop-up menu is not available. All DV devices support two audio
tracks at 16-bit resolution, and many support up to four tracks at 12-bit resolution.
 If you’re using RS-422: Many third-party video or audio recording devices are
capable of insert editing more than two tracks of audio when using RS-422 device
control. The Audio Mapping pop-up menu does not automatically detect the
number of audio tracks your video or audio recording device is capable of
recording to, so you need to manually choose an audio mapping for your deck.
Check the documentation that came with your video or audio recording device for
information on the number of audio inputs it supports
For more information about when to use audio mapping, see “
Mapping for Multichannel Audio Output
What Is a Device Control Protocol?
A device control protocol defines the rules and syntax for how two devices
communicate with each other. The two connected devices must negotiate and agree
upon the speed of communication (often measured in bits per second or baud, much
like a modem), the length of each binary word, and how different commands—such
as play, rewind, and fast-forward—are coded. Once the two devices have successfully
established communication via a remote control protocol, navigational commands,
timecode, and so on can be transferred between the device and Final Cut Pro.