Sync System In Slave Mode - Fostex FD-4 Owner's Manual

MIDI Synchronization

Sync system in Slave mode

You can set up the system in which the FD-4 in Slave mode
synchronizes to an external master MIDI device.
In this example, a master device is a computer running
sequence software.
<Note>
Make sure to use an external MIDI device that is able to output
MTC as a master device.
• Initialize the FD-4 before you start the operation.
• If multiple Programs exist, select the desired Program first.
Connecting an external device
1. Connect the MIDI OUT jack of a computer running sequence
software to the MIDI IN jack of the FD-4.
The connected computer should be running sequence
software that supports MMC/MTC.
AUX RTN 2
2 AUX SEND 1
R MONO/L
DATA DATA
SCSI IN
with Sequence
Software
Setting up the external device
1. Set the following items on the sequence software.
• Set up the sequence software to output MTC.
• Set a frame rate of MTC.
• Check the start time of the song.
* Refer to the instruction manual that comes with the external device
for more information.
Setting the FD-4
1. Set the frame rate of the sequence software, as described in
the "Setting an MTC frame rate" menu in SETUP mode.
* See "Setting an MTC frame rate" on page 87 for more information.
2. Set an offset time value in the "Setting an MTC offset value"
menu in SETUP mode.
* See "Setting an MTC offset value" on page 87 for more information.
3. Set the desired mode in the "Setting Offset mode" menu in
SETUP mode.
74
INPUT 4 INPUT 3
AUX RTN 1
R MONO/L 4 INSERT 3
PUNCH MIDI MIDI RECORDER IN
OUT IN OUT R L
IN/OUT
MTC
* See "Setting Offset mode" on page 88 for more information.
4. Turn Slave mode ON in the "Setting the Slave mode" menu
in SETUP mode.
* See "Setting the Slave mode" on page 88 for more information.
5. Set the slave type to [Vari] in the "Setting the Slave type"
menu in SETUP mode.
* See "Setting the Slave type" on page 89 for more information.
6. Press the TIME BASE SEL key to display the MTC Time Base.
<Notes on setting MTC-related parameters>
The MTC offset time and MTC offset mode determines whether or
not MTC (MTC offset time) is output at ABS 0 or 001BAR 1 00CLK.
Follow the guide below, according to the start time of the song of the
sequence software.
• Offset mode = ABS:
Set the MTC offset time to three seconds prior to the start time of
the song of the sequence software. The FD-4 does not chase and
lock to incoming MTC immediately. To synchronize the FD-4 from
the beginning of the song, you need to set a preroll time and play
the song a little before the top of the song of the sequence software.
• Offset mode = BAR :
You can set the MTC offset time to the start time of the song.
As explained previously, the ABS 0 position is [-002BAR 1 00CLK],
which allows for synchronization from the top of the song. The dura-
tion of two measures changes depending on the setting of the time
signature and the tempo of the first measure. (Example: slow tempo
= longer duration)
Checking the chase and lock operation
1. When you play the sequence software, the [MTC IN]
indicator on the display lights up, and the flashing [SLAVE]
lights up continuously, which indicates that chase and lock
is complete.
At this time, make sure that MTC output from the
sequence software is being displayed on the FD-4.
2. When you stop the sequence software, MTC transmission
is interrupted and the FD-4 stops.
The [SLAVE] indicator on the display starts flashing.
3. While the sequence software is fast forwarding or
rewinding, the FD-4 remains stopped. As soon as you start
play back or record, the FD-4 immediately performs the chase
and lock operation.
<Note>
The FD-4 can chase and lock to MTC only when the speed variation of
MTC sent from the master device (computer) is within +/-5.6%.
Within this range, the FD-4 will use the Vari Pitch function internally to
chase MTC. If this range is exceeded, the FD-4 cannot chase and lock.
If the speed variation of the master device is large, play the sequencer
before recording so that the FD-4 will learn the speed of the master
device. In this way, the FD-4 will lock to time code quicker next time.