MOTU micro express-USB, Руководство пользователя

Страница: 67 / 156

U S I N G M I D I E X P R E S S X T C O N S O L E
65
THE ADVANCED MIDI WINDOW
The Advanced MIDI window, shown in
Figure 7-18, has several settings that are explained
in the following sections.
Figure 7-18: The Advanced MIDI window.
MIDI Machine Control
This option turns on and off the MIDI Machine
Control features of the MIDI Express XT. Most of
the time, you’ll want to control the transports of all
your gear from the computer. So leave the
“Transport master” option checked. In this
scenario, the computer is a synchronization slave
in most cases, as it slaves to MIDI Time Code
(MTC) generated by the MIDI Express XT. So leave
the “Synchronization slave” option checked as well.
MIDI Machine Identification options
If you are using MIDI Machine Control, each
MMC device requires a unique MMC device ID,
including the MIDI Express XT itself. The factory
default ID of the MIDI Express XT is 20. You can
change this default if you’d like in the Advanced
MIDI window.
Direct MMC versus redistributed MMC
When you enable the transport master option
shown in Figure 7-18, the MIDI Express XT
“swallows” all MMC transport commands sent by
MMC software running on the computer,
regardless of the MMC device the messages are
intended for (as determined by the MMC device
ID embedded in the messages). If you want to
control a MMC device from your computer, you
have two choices:
1. bypass the MIDI Express XT’s MMC features,
2. or send the MMC transport commands to the
MIDI Express XT instead and have it redistribute
them to the other MMC device(s)
If you would like to bypass the MIDI Express XT
and control a MMC device directly from your
computer software (choice #1 above), uncheck the
transport master option shown in Figure 7-18.
If you plan to use choice #2 above, leave the
transport master option checked, and also make
connection shown in Figure 7-10 (which routes the
MIDI Express XT’s Transport Out port to the other
MMC device).
Choice #2 is better in many situations because the
MIDI Express XT can serve as a central, stable
“sync hub” that distributes time code to one or
more other devices. This scenario is demonstrated
in Figure 4-4 on page 22 and described in “Your
Sequencer as a MMC controller” on page 22.
WORKING WITH SETUPS
The MIDI Express XT provides eight factory
Setups and eight more user Setups (called
presets
on the front panel of the Express XT). Factory
Setups are “hard-wired” and cannot be
permanently changed. If a factory Setup is the
current Setup, changes you make to the
Express XT’s settings will not be remembered
unless you save them to one of the Express XT’s
eight user Setups.
The eight user Setups can be configure any way you
wish, and they can be stored for later recall.
!USB Interfaces Manual Book Page 65 Tuesday, October 10, 2000 12:43 PM