Biphase setup menus – Teac MMR-16 v4.0 User Manual

Page 117

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MMP-16

TASCAM MMP-16 Owner’s Manual • Chapter 7 • System Applications

119

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).

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

Biphase Setup Menus

Menu 300 is used to set the Biphase Frame Rate. In most applications in the USA the film frame rate will
be set to 24 fps (the default setting). For some European applications this may need to be set for 25 fps,
and for specialized film for video applications there is also the 30 fps rate available.

Menu 301is used to set the Biphase Pulse Rate. The number of pulses per frame is determined by the model
of film transport or dubber that is being used with the MMP-16. See Table 5.1 for a list of transport types
and the pulses per frame they use. If the model that will be connected to the MMP-16 is not listed consult
the film transport manual for the specification. It is normally listed under the specifications as the ppf for
nominal play speed. If this setting is incorrect then all time code and feet & frame calculations made by the
MMP-16 will be off since they are derived from the pulse rate.

Menu 302 is used to choose the Biphase I/O setting. In the majority of applications biphase control will
be used so Menu 302 is normally left at the default setting of biphase.

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