Studio Interconnections

1. Studio Interconnections Analog Audio Digital Audio Word Clock Video Ref. “Sync” Timecode TDIF Audio Video Sync Master W/C VHS VTR Digital Console DAW DA-88 W/SY-88 Micro Lynx 2” Multitrack CD Recorder DAT IF-88AE AES Converter

2. Clock Signals • Clock signals are SPEED reference signals that are used in applications where the rate or speed at which data is transferred or output must remain constant. • Clock signals can be used for both analog and digital applications. • In digital audio applications the clock signal is know as Word Clock. • In video applications the clock signal is know as House Sync, or Video Sync, or Black Burst • Clock Signals should not be confused with Timecode.

3. Digital Word Clock • A square wave, clock reference signal for digital audio • Word Clock is a “speed” reference • Sample rate is derived from word clock signal • Allows serial transmission between digital audio devices Typically uses a 75Ω coaxial video cable with BNC termination. "BNC” (British Navy Connector) is a bayonet-type connector, seen on professional video equipment. The male connector, usually mounted on the equipment, appears as a cylinder with a hollow pin in the center. The outer cylinder has two little nubs sticking out on opposite sides. The female connector, normally mounted on the cable, has an outer ring with slots on opposite sides which turns so that it can bayonet onto the nubs of the male connector, and has a smaller center pin which joins to the male's hollow center pin.

4. Word Clock • A timing reference for digital audio serial transmissions • A square wave signal at the sample rate • Defines the sample rate of the incoming signal • Used to derive the sample rate of incoming digital audio • Word Clock is a “speed” reference • Typically on 75 Ω coaxial video cable with BNC termination

5. M27 Digital Connections

6. Digital Audio Transmission Formats Format • AES3 Embedded Word Clock 2 Channel Channels XLR Termination • AES3id 2 Channel BNC/RCA Embedded • S/PDIF 2 Channel RCA Embedded Embedded • Toslink 2 Channel Optical (JIS F05) Embedded • ADAT 8 Channel Optical (JIS F05) • TDIF 16 Channel (8 In/8 Out) DB25 Separate Digital audio is transmitted from one device to another using a variety of formats. These formats have been developed to satisfy specific needs or applications. Each format typically specifies what type of cable and what type of termination is to be used. The most common of these formats are…

7. Digital I/O • AES/EBU • 2 channels of audio on one cable • Word clock embedded (“self clocking”) • Balanced cable (110 Ω), typically XLR connectors • 44.1kHz/48kHz, up to 24 bits • S/PDIF • Semi-pro and consumer standard • 2 channels of audio • Word clock embedded (“self clocking”) • Unbalanced cable (75 Ω), typically RCA connectors • 44.1kHz/48kHz, up to 24 bits • Can also be optical cable with TOSLink connectors

8. ADAT Optical

9. ADAT Specifics • ADAT (Alesis Digital Audio Tape) • aka “Lightpipe”, “Optical” • 8 channels of audio (a multichannel interconnection) • optical cable with Toslink (JIS F05) connectors • Word clock embedded • 44.1kHz/48kHz, up to 24 bits • 96kHz by combining 2 ports (participating manufacturers)

10. TDIF Specifics • TDIF (Tascam Digital Interface) • 16 channels of audio (a multichannel interconnection) • 8 channels Input / 8 channels output • Multiwire cable with 25-pin D-sub connectors • Word clock is an external connection, on 75 Ω coaxial cable • 44.1kHz/48kHz, up to 24 bits

11. TDIF w/Separate Word Clock Word Clock TDIF IF88AE AES Converter

12. DA-88 Word Clock TDIF Word clock TDIF

13. The DA-88 In Detail

14. DA-88 Tape Path

15. DA-88 Head Assembly

16. TDIF Tascam Digital Interface

17. IF-88AE AES Converter

18. Yamaha DM Series DM1000 O1V96 O2R96 DM2000

19. Yamaha DM Series Back Panels DM1000 O1V96 O2R96 DM2000

20. Yamaha DM2000 in Detail

21. DM2000 Back Panel 2Trk Digital Ins Word Clock I/O Analog “Omni” Outs 2Trk Analog Ins Timecode Ins Mic Inputs Digital Mix Bus Outs Computer I/O Line Inputs Control Room Outs Analog Inserts Cascade Analog Mix Bus Out “Slot” I/O Meters, GPI, 9Pin & MIDI

22. DM2000 “Slot” I/O

23. DM2000 Layers

24. DM2000 Selecting Layers

25. Yamaha DM2000 Layers in M27 Layer 1: Channels 1-8 = ProTools Analog Outs 1-8 Channels 9-12 = Microphone Inputs 1-4 Channels 13-16 = Empty Channels 17-24 = DA-88 Analog Outs 1-8 Layer 2: Channels 25-48 = ProTools Digital Outs 1-24 Layer 3: Channels 49-72 = Empty Layer 4: Channels 73-96 = Effects & Tape Returns

26. DM2000 LCD Display

27. DM2000 Digital I/O

28. Video “House Sync” • A video waveform signal without video elements, often referred to as “House” or “Sync” or “Black Burst” or “Video Sync” • House Sync is a “speed” reference signal used as a control track on ALL video tape formats. • “House Sync” is used to synchronize video tape machines and processors to a common speed reference. In video facilities, “House Sync” is sent to all tape machines and video processors. • “House Sync” is embedded into the video signal (from a video camera) during recording. This composite signal creates a control track that defines the speed of the original recording. These camera tapes are called “Source Tapes”. • In post-production video applications, “Master Tapes” are blank tapes that have been formatted by striping them with “House Sync” and a black video signal. This process is called “Blacking”. Video editing is the process of transferring selected “Source Tape” material onto video “Master Tapes”. As with the “Source Tapes”, “House Sync” allows “Master Tapes” to synchronize to the common speed reference from the “House Sync” generator. • House sync DOES NOT CONTAIN TIME CODE! This is a common misconception. • Uses a "BNC" (British Navy Connector) connector.

29. House Sync & Word Clock Both are speed reference signals. They do not contain timing information such as Time Code or Sample Rate, rather they provide the basic speed reference to generate a timing signal.Sample Rate is derived from Word Clock. Frame Rate is derived from House Sync.