Fostex VF160EX operation manual Confirming chase lock, One Point Advice

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,theVF160EX 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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