Confirming Chase Lock; Execution Of Recording - Fostex D2424LVmk2 Reference Manual

(6) Press the [DISP SEL] key while holding down the [SHIFT] key, to change the time base display to MTC.
<Precautions at MTC related setups>
The position (ABS 0 or 001BAR/1BEAT/00CLK) when the setup MTC (MTC offset time) should be
output was setup by the " MTC offset time setting " and " MTC offset mode setting ." In accordance to start
time of the tune set by the sequence software, setup as explained below.
Offset mode: For ABS
Set the MTC offset time about three seconds prior to the start time of the tune set by the sequence
software. Because the recorder cannot immediately chase lock after input of MTC, in order to sync
the unit from head of the tune, set the preroll using the sequence software, and playback from before
the actual head of the tune to allow the recorder to enter into sync by the time it arrives at the head
of the tune.
Offset mode: For BAR/BEAT
The MTC offset time can be set to the same time as the start time of the tune set by the sequence
software. Because the " ABS 0 " position is set at the " 002BAR/1BEAT/00CLK " position in the unit, as
mentioned before, the preceding time required for sync is already set. The preceding time of two bar
lengths could change in length depending on the first bar's "signature setting" and "tempo setting"
mentioned before. For example, it will be longer if the tempo is slowed down.

• Confirming chase lock

(1) When the sequence software is played, MTC IN LED of the recorder will light, "CHASE" in the display will change
from blinking to lit and the chase lock will be completed.
Check that the MTC output by the sequence software and MTC time displayed in the recorder are the same.
(2) When the sequence software stops, MTC will be interrupted and the recorder will also stop.
"CHASE" in the display will change from lit to blinking.
(3) During FF/REW of the sequence software, the recorder will remain stopped but upon starting to record, the
recorder will immediately chase lock.
<Note>:
Chase lock of the recorder by MTC only is permissible when speed difference of the MTC
from the master is within +/- 5.6%. Against the MTC within this range, variable pitch will be constantly
applied internally for chasing. Chase lock, however, will not function against MTC at a speed difference
outside this range. Also, when the master speed difference is large, it is advised to let the recorder
learn the master speed by entering PLAY prior to recording. By doing so, it will be lock faster from the
second and later sessions.
* Should it not be possible to chase lock, re-check connections / cables and all settings.

• Execution of recording

Carry out various recordings while the recorder is chase locked to the sequence software.
<One Point Advice>
Sync signal "Free" of the "Slave mode setting" menu:
When the recorder is made to chase lock by MTC only, variable pitch will be constantly applied by
external MTC. If a digital signal is output to an external digital equipment from the recorder, it will
not be able to follow the speed difference (MTC speed difference of the master) of the recorder and
the external digital equipment, in some cases, may not be able to input a continuous digital signal.
As a counter measure, the sync signal should be set to "Free" by the "Slave mode setting" menu. Using
this setting, the recorder will enter self operation by the internal clock, after completion of chase
lock, and it will be possible to supply a stable digital signal to the external equipment.
Under this setting, when MTC drift between the master recorder and slave recorder exceeds 10 frames,
the recorder will assume that chase lock has been disengaged and the slave recorder will carry out
position matching again with the master unit (re-chase operation). During the re-chase operation,
sound output will be muted and the digital signal will also be interrupted. If it is within 10 frames,
the slave recorder will continue to run while admitting this drift.
Model D2424LVmkII Reference Manual (MIDI Sync Function)
89