Tascam MMP-16, Руководство пользователя

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Tascam MMP-16 Owner’s Manual • Chapter 5 • MMP-16 System ApplicationsMMP-16 82
On older film transports that use a tach and a direction signal, the phase A connection comes from the
direction signal and the phase B connection comes from the tachometer output. Setup Menu 302 allows
the default setting (which is biphase) to be changed to tach+direction. If the transport controls seem to be
“backwards” (i.e. Play runs the film in reverse), select the tach+inverse direction choice from Setup Menu
302.
Both menus 301 and 302 are used to set the MMP-16 as a slave to the biphase device (where the MMP-16
will be generating time code or feet & frame numbers off the biphase signal from the film transport).
Using the MMP-16 in this way requires that the Biphase Chase operating mode be selected and that the
MMP-16 be placed online (the online button is lit up).
The MMP-16 As Master
In many applications it’s desirable to have the MMP-16 function as the master in order to allow remote
control of the film transport (either from the MMP-16’s front panel motion controls or from a Lynx
controller or a KCU). Built into the MMP-16 are biphase and tach+direction signal generators that can
supply the correct motion control signals for most biphase devices allowing controlled film acceleration
and fast wind speeds (which are adjustable parameters set through the 300 bank Setup Menus).
When the MMP-16 will be the master, and the film transport will be the slave, the Biphase Transport
operating mode is used. In this mode the biphase signal from the MMP-16 is used to generate control
signals for the film transport as well as create the time code for running the MMP-16 and other audio
devices. Once this operating mode is selected the various 300 bank Setup Menu parameters for the film
transport should be checked to ensure they are set for the model of film transport used in the system.
These settings can then be saved to a User Settings file for re-use in a future session.
Biphase Setup Menus
Once the biphase operating mode is selected, the 300 bank Setup Menus (Table 5.2) can be used to verify
and set the parameters for the specific film transport being used with the MMP-16. For most applications,
the acceleration (Menu 320) and fast wind speed (Menu 321) defaults can be used since they correspond
to the pulse rate selection (Menu 301). Thus, if they must be changed, they must be changed after the
pulse rate has been set, otherwise they will be changed back to the default setting for the new pulse rate.
300 Menu Item Selection Choices
300 Biphase Frame Rate film frame rate 24, 25, 30 fps
301 Biphase Pulse Rate pulses per frame 2, 4, 10, 20, 25, 50, 100 ppf
302 Biphase I/O biphase or tach+direction Biphase, Tach+Direction,
Tach+Inverse Direction
320 Biphase
Acceleration film acceleration (ramp up
time from stop to fast wind) 4 up to 32 times (follows pulse
rate choice)
321 Biphase Maximum
Wind Speed fast wind speed setting 1x play up to 20x play speed
(follows the pulse rate choice)
Table 5.2 Biphase Setup Menus