Tascam MMP-16 User Manual download pdf (Page 89)

Tascam MMP-16 Owner’s Manual • Chapter 5 • MMP-16 System ApplicationsMMP-16

MMP-16 Film Connections

Although the MMP-16 can only be controlled by one film transport bus at a time, there are four film

transport connections (biphase input) on the UI/B card on the rear panel. These connections allow a single

MMP-16 to be switched between up to four projection/mix down rooms when it is placed into a main

machine room. The biphase input that the MMP-16 follows is set using the Sync Group menu 100. The

four inputs are grouped together in the lower part of the UI/B card and are numbered 1 - 4 (top to bottom)

to match Sync Groups 1 - 4 (selected through menu 100).

The MMP-16 can only control one film transport bus, which is connected to the biphase output connector

at the top of BIPH card on the MMP-16 rear panel.

All biphase connectors use standard 6-pin modular telephone plugs (RJ12, the same type used on

3-line telephone systems) so that up to 1,000 feet of standard 6-wire phone wiring can be run to

the various film transports. A terminal strip (or a 6-wire surface mount jack) can be used to adapt the film

transport connector wiring to the MMP-16 wiring. These connections are normally done for post

production final mixing sessions. Not intended for public telecommunications network connection.

As in all uses of the MMP-16, the Lynx and/or MMR buses can be used by the MMP-16 to control any

number of additional audio and video equipment even though that MMP-16 is being controlled by the

film transport.

Video Post Production

In video post production the MMP-16 is typically slaved to a video tape recorder. In this use the VTR’s

time code output is the time code reference for the MMP-16. If the VTR is connected to a house sync

signal, then the MMP-16 should also be connected to house sync (through the Video In connector) and

should use that signal as the frame reference. In lieu of house sync, the VTR’s video output would

connect to the MMP-16’s Video In for the frame reference source. The MMP-16, although time code

slaved to the VTR, typically also functions as a master for any other audio devices on the Lynx and/or

MMR buses.

The Lynx Bus

The Lynx Bus is an asynchronous communications bus that transmits a frame clock as well as time code

and motion commands between the MMP-16 and other devices using an RS-422 serial communications

bus operating at 38.4 KBaud. Up to 1,000 feet of cabling can be used in the bus system with each device

connecting via 9-pin D-sub connectors. All that is required to build-up a Lynx bus is to daisy-chain each

Lynx bus device to the next one in line along with a separate house sync connection. Each Lynx-2 box

has two Lynx bus loop-through connections just like each MMP-16. A Lynx-2 interface is necessary to

connect each remote controllable audio or video device to the Lynx bus. A Lynx Keyboard Control Unit

KCU can also be connected directly to the Lynx bus to allow independent and grouped remote control of

up to six Lynx bus connected machines. This is described in more detail in Chapter 4 MMP-16 Setup

Menus.

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Tascam MMP-16 User Manual Page 89