Confirming Chase Lock - Fostex VF160EX Operation Manual

Confirming chase lock

1. When the sequence software is played, "CHASE" and
"MTC" in the display will be light and the chase lock will
be completed.
Check that the MTC output by the sequence software and
MTC time displayed in the VF160EX are the same.
2. When the sequence software stops, MTC will be
interrupted and the VF160EX will also stop.
"CHASE" in the display will change from lit to blinking.
3. During FF/REW of the sequence software, the VF160EX will
remain stopped but upon starting to record, the VF160EX
will immediately chase lock.
Should it not be possible to chase lock, re-check
connections/cables and all settings.
<One Point Advice>
Sync signal "Vari" of the "Slave mode setting" menu:
When the VF160EX 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 VF160EX, it will not be able to follow
the speed difference (MTC speed difference of the
master) of the VF160EX 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 VF160EX 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
VF160EX 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.
Execution of recording
1. Carry out various recordings while the recorder is chase
locked to the sequence software.
<Note>
Chase lock of the VF160EX 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 VF160EX learn the master speed by entering PLAY
prior to recording. By doing so, it will be lock faster from
the second and later sessions.
<Note>
Normally, when "Setup of slave type" is set to " Vari ", the
VF160EX will be constantly controlled by vari-pitch and
follow the MTC, which is the master.
However, if the digital input is set to " SPDIF " or " adat "
via the SETUP mode "Setup of digital input," it will be in
"Word clock external sync operation" by the digital
signal (S/P DIF or adat) that is input.
Therefore, it must be noted that when "Setup of digital
input" is executed, even though "Setup of slave type" is
set to " Vari ", it will not follow by application of vari-pitch
and upon completion of lock, it will change to external
sync operation by the digital input signal.
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