Roland VS-2000 User's Guide Page 190

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190
Chapter 15 Using External MIDI Devices
Synchronization Using the
VS-1680 as the Master
When you want the VS-1680 to control the MIDI sequencer,
use the following procedure:
1. Connect the VS-1680 and the MIDI sequencer as shown
in the following illustration.
fig.08-02
2. Press [PLAY(DISPLAY)].
3. Hold [SHIFT] and press [F5 (SYSTEM)]. The System
menu icon appears in the display. If the System menu
icon does not appear, press [F6 (EXIT)].
4. Press [F4 (MIDI)]. If “MIDI” does not appear in the
display above [F4], press [PAGE] until “MIDI” appears,
and then press [F4 (MIDI)].
5. Use[ ], [ ], [ ], and [ ] to move the
cursor to “MIDI Thru,” and use the TIME/VALUE dial
to change the setting.
MIDI Thru
This switches the function of the MIDI OUT/THRU
connector. For this application, use “OUT.”
Out:
MIDI messages are sent from the VS-1680. Select this
when sending MIDI messages such as metronome note
messages, mixer parameter settings (Control Change or
Exclusive messages), and/or synchronization messages.
Thru:
This echoes MIDI messages received via the MIDI IN
connector without changing them.
6. Hold [SHIFT] and press [EXT SYNC]. The Sync/Tempo
screen appears in the display.
fig.08-03
7. Use [ ], [ ], [ ], and [ ] to move the
cursor to “Sync Gen.,” and use the TIME/VALUE dial to
change the setting.
Sync Gen. (Sync Generator)
This setting determines what type of MIDI signal is
generated at the MIDI OUT connector on the VS-1680.
For this application, choose “MTC.”
Off:
No MIDI signals are transmitted.
MTC:
MIDI Time Code is transmitted.
MIDIclk:
The tempo map MIDI Clock is transmitted.
SyncTr:
The sync track MIDI Clock is transmitted.
Drop Frame and Non-Drop Frame
There are two types of time code used by NTSC format
video recorders: drop frame, in which the time code is
not continuous, and non-drop frame, which features
continuous time code. In drop, which is used for NTSC
color video formats, the first two frames of every minute
are dropped, except for those at ten-minute intervals.
fig.08-01
Non-drop is generally used for most video and audio
productions, since formats with continuous frames are
easier to deal with. In contrast, in situations such as live
broadcasts, where the time code clock must match actual
clock time, drop frame is used.
00 01 02 03 04 05f2928272625 ......
01m00s
00m59s
02 03 04 05 06 07f2928272625 ......
01m00s00m59s
Non-Drop Frame (29N)
Drop Frame (29D)
MIDI IN
MIDI Sequencer
(implements MTC)
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