Tascam owner manual MMR-8 System Applications, Film Post Production

Page 85

Chapter 5 MMR-8 System Applications

This chapter offers more detailed information for using the MMR-8 with film and video applications. Setup Menu parameter selections, technical background information, and block diagram connections are also covered.

Film Post Production

A standard method of synchronizing a film transport with external audio devices (like the MMR-8) is to use the pulse-interlock signal, or as it is more commonly known today--the biphase control signal, as a method of generating time code from the film’s movement to drive the various audio devices.

The biphase control signal consists of two 5 volt or 12-volt pulses (called phase A and phase B) that are generated from the sprocket drive motor on the film transport. The phase relationship between the two pulses indicates the transport direction (when phase A leads phase B by 90° the film is moving forward), while the pulse frequency indicates the relative film speed (the nominal pulse rate indicates play speed, with higher rates indicating wind speed and slower rates indicating crawl speed).

It is only through knowing exactly how many pulses are generated per frame, and then keeping track of the total number of pulses that have been received (while subtracting pulses for when the film is moving in reverse), that the MMR-8 can constantly translate the biphase signal into the correct feet & frames or SMPTE/EBU time code numbers for the film frames. Since there are several “standard” biphase pulse rates used by the various film transport manufacturers, there is no one nominal frequency of the biphase signal for normal film play speed (pulse frequencies of 48 Hz up to 2400 Hz are used per frame). For the MMR-8 to interpret and lock onto a biphase signal, and to generate the correct time code numbers, it must be given the correct Setup parameters for the type of transport that it is following (Setup Menu 301). Table 5.1 lists the biphase pulse rates the MMR-8 can lock to and some examples of the equipment for each rate.

Biphase

Biphase Play

Transport

Acceleration /

Notes

Pulse Rate

Frequency

Type

fast wind speed

 

2 ppf

48 Hz

DIN standard

32 / 15x

Also used by Westrex

4 ppf

96 Hz

Westrex

8 / 5x

Alternate DIN standard

10 ppf

240 Hz

MTE

8 / 5x

 

20 ppf

480 Hz

RCA

8 / 5x

 

25 ppf

600 Hz

RCA

8 / 5x

 

50 ppf

1200 Hz

RCA

8 / 5x

Biphase only

100 ppf

2400 Hz

MTM

8 / 5x

Biphase only

ppf = pulse per frame

Table 5.1 Biphase Pulse Rate Settings

MMR-8 Tascam MMR-8 Owner’s Manual • Chapter 5 • MMR-8 System Applications

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Contents MMR-8 HAZARD, do not Expose this Appliance to Rain or Moisture Teac Corporation Important Safety Instructions Page Page Page Page Page MMR-8 MMR-8 ChapterMMR-8 Operation MMR-8 System Applications 105 MMR-8 Introduction General InformationHardware Overview Page Functional Overview Page Error SetupBackup State LCD Window Display Comment NormalSystem Specifications Page MMR-8 Materials Kit Box InstallationMounting Rack Ears General GuidelinesMultiple MMR-8 Rack Installation Installing Multiple MMR UnitsAC Mains and Grounding Earthing Considerations Audio CablesMMR-8 Back Panel MMR-8 Back Panel ConnectionsAnalog In/Out Connections Audio ConnectionsDigital In/Out Connections Monitoring ConnectionsVideo In/Out Timecode and Video Reference SignalsSMPTE/EBU Time Code In/Out VitcDigital Audio Sample Reference Connections Biphase ConnectionsWord Clock AES/EBU Sample RateExternal Controllers & Bus Connections Midi ConnectionsLynx Bus / KCU Connection MMR Sync Bus ConnectionsSerial Transport Connection Connecting External Scsi MediaSerial Editor Connection Parallel TransportTascam MM-RC Remote Controllers for the Tascam MMR-8Verifying MMR-8 Installation Powering Up the SystemSoftware Updates Testing Your Installation Factory Default SettingsMMR-8 Tascam MMR-8 User’s Guide MMR-8 Operation MMR-8 Keys & Definitions MMR-8 OperationMMR-8 MMR-8 Front Panel Page LED Indicators Front Panel Indicators, Switches, and DisplaysMachine Status LEDs Normal State Display Liquid Crystal Display LCDView Track State Display Setup State DisplayLoad Track State Display Slip Track State DisplayError State Display Backup State DisplayVerify State Display Transport Group Front Panel Key GroupsMount Arrow Setup and Wheel GroupSubf TC/FEET SHIFT+UPTrim SHIFT+TRIMTrack Group WheelSelect SELSHIFT+SEL Overwrites existing material on track Clipboard contentsInsert Edit To Clipboard w/offset Input MONDelete Shift + LoadSlip TrackNumeric Keys Keypad GroupSHIFT+1 OffsetReader SHIFT+2Capt CLRMMR-8 MMR-8 MMR-8 Loading and Mounting Drives Basic OperationLoading Individual Tracks Loading a Project, Session, or CompositionLoads into any Selected Track Index TRKViewing Tracks Recording a New ProjectUnloading Tracks Deleting Tracks from the DiskRecalling Registers Using RegistersCapturing the Current Time Code Trimming Time Code Values Using the Entry RegisterLocal & Studio Monitoring Headphone Volume LevelHeadphone Jack Phones Setup State & the Setup Menus MMR-8 Setup MenusSetup Operation Menu # Menu Name Parameters Setup Menu ChartMenu # Menu Name Parameters Menu # Menu Name Parameters Menu # Menu Name Parameters Control Mode Setup Menu DetailsSerial Transport User SettingsTransport Control Lynx BusTrack Record Arm/Select Head/TailUndo/Redo Prev/NextClear/Paste Auto Cleanup Record ModeTape Mode Non-DestructiveMMR Bus Film Post Production MMR-8 System ApplicationsMMR-8 As Master Biphase Setup MenusPage MMR-8 Film Connections Video Post ProductionMMR Input and Output Level Calibrations System Input Level Calibration Using the Meter LEDsMOC Calibration Procedure Input Converter Board Output Converter Board MIC Calibration ProcedureAdding External Drives to the System Using Removable MediaFormatting Disks Tascam MMR-8 System SoftwarePage Setup and Wheel Group Appendix a Control Panel Command SummaryTransport Group ArrowKeypad keys Page MON+SEL EDIT+SELINPUT+SEL SHIFT+SELUnknown Nikon MO Drive BelugaSony MO Drive SeagateTascam MMR-8 Approved Drives SET NFREMOVEID=4 Appendix C WaveFrame CompatibilityPage Appendix D MMR-8 Cable Information Parallel Tracks and Parallel Transport ConnectorLynx Remote Controller Connector pinout Midi IN/THRU/OUT Connector pinoutEditor Connector pinout Transport Sony 9-pin Connector pinout Biph Biphase Connectors pinout Analog Input & Output Connectors pinoutsSync MMR-Bus Connector pinout DIO AES/EBU Digital Audio Connector pinoutTimecode OUT Connector Timecode in ConnectorWord Clock in Connector Word Clock OUT ConnectorScsi Connector Vitc in ConnectorPRX Connector 104 Appendix E MMR-8 Glossary KCU Control TrackLED LCDLTC MidiAbbreviations Smpte ScsiTerms BIT REC LED Index112 113 114 115 116 117
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The Tascam MMP-16 and MMR-8 are two innovative products designed to meet the specialized needs of audio professionals, offering advanced features and capabilities suitable for various recording and playback applications.

The Tascam MMP-16 is a versatile audio router and mixer that excels in different environments, from live sound to studio recording. One of its primary features is the 16-channel configuration, allowing for significant flexibility in signal routing. The MMP-16 supports multiple audio formats, including analog signals, making it adaptable to a wide range of setups. It boasts high-quality AD/DA conversion, delivering excellent audio fidelity and low latency performance.

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The MMR-8 also provides comprehensive onboard monitoring options, allowing users to assess audio quality in real time. Its extensive connectivity options include digital and analog inputs and outputs, facilitating seamless integration with other studio equipment and live sound systems. The data management capabilities of the MMR-8 make it easy to organize and retrieve recordings, while its compact design ensures portability without compromising on performance.

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