Timecode and Video Reference Signals, Video In/Out

Timecode and Video Reference Signals

To accurately synchronize the MMR-8 to film or video, or with other audio playback equipment, some method of providing a stable timing reference must be used. Because the MMR-8 is very flexible, there are numerous methods one could use to connect film and video equipment. The best method depends upon the chosen method of sync, the other equipment that is being controlled, and whether the MMR-8 will be the master or a slave to the other equipment. This section covers the various reference signals available on the MMR-8 system and their applications.

Video In/Out

Most video post houses have a common house sync signal to lock all the audio and video equipment in the facility to a standard video reference signal. This insures that all devices receiving the house sync signal will lock together to the edge of the video frame. The house sync signal can be black burst, composite sync, or color bars in NTSC or PAL format. The house sync video reference signal should be connected to the VIDEO IN connector on the back of the MMR-8. To loop the connection through the MMR, connect the MMR VIDEO OUT to the next device that will use the house sync signal. If there is not a loop through connection then the VIDEO OUT may need to be terminated, depending upon the facility signal design. To set the MMR frame reference to use this video input, choose setup menu 001, Frame Reference, and set the value of this parameter to be Video Reference.

SMPTE/EBU Time Code In/Out

The MMR has two stereo phone jack connections using ¼” Tip/Ring/Sleeve connectors (with the tip being + and the ring being - on a balanced signal) for synchronizing the operation of the MMR to other devices using SMPTE/EBU Longitudinal Time Code (LTC). To synchronize the MMR to an external device which outputs SMPTE/EBU LTC, connect the time code audio output of the master device to the MMR TIME CODE IN jack. The MMR-8 can also generate a stable SMPTE/EBU time code output (equivalent to a time code track signal) that can be used to synchronize external equipment or to stripe time code onto tape. The TIME CODE OUT jack will always output SMPTE/EBU LTC when the MMR is playing.

VITC In

Many videotape formats can record time code within the vertical interval space between each frame of video. This type of time code recording is known as Vertical Interval Time Code, or VITC. The advantage of this method is that a valid time code signal can still be generated even when the tape is paused to show a single frame of picture, since the helical scan heads of the tape machine are continually scanning the picture (and thus the VITC signal). The MMR-8 has a 75-ohm connection, using a BNC connector to receive VITC. To use VITC time code with the MMR, connect the video machine’s VITC output to the VITC IN connector on the MMR-8.

MMR-8

Tascam MMR-8 Owner’s Manual • Chapter 2 • Installation

MMR-8 specifications

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.

Additionally, the MMP-16 is equipped with comprehensive digital processing capabilities, including EQ and dynamics processing on each channel. This makes it ideal for both mixing live performances and preparing recordings for post-production. The unit's user-friendly interface includes an intuitive display and physical controls that streamline operation, making it easy for both novice and experienced engineers to navigate.

On the other hand, the Tascam MMR-8 is a robust multi-track digital audio recorder that offers exceptional reliability for professionals who require high-quality audio capture. This 8-channel recorder shines in its ability to handle various digital audio formats, ensuring compatibility with different workflows. One standout feature of the MMR-8 is its solid-state recording technology, which enhances durability and reduces the risk of data loss, a crucial aspect in high-stakes recording environments.

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.

Both the MMP-16 and MMR-8 showcase Tascam's commitment to innovation and quality in the audio industry. Their advanced features, coupled with solid build quality and ease of use, make them essential tools for audio professionals seeking reliable solutions for their recording and mixing needs. Whether utilized separately or in conjunction, these devices amplify creativity and enhance the overall audio production experience.