DIGITAL RECORDING PROCESSOR CBX-D5 Owner's Manual 2 OPERATING MANUAL
FCC INFORMATION (U.S.A.) 1. IMPORTANT NOTICE: DO NOT MODIFY THIS UNIT! This product, when installed as indicated in the instructions contained in this manual, meets FCC requirements. Modifications not expressly approved by Yamaha may void your authority, granted by the FCC, to use the product. 2. IMPORTANT: When connecting this product to accessories and/or another product use only high quality shielded cables. Cable/s supplied with this product MUST be used. Follow all installation instructions.
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1 Chapter : Table of Contents 1 Introduction ..............................................1 Welcome to the CBX-D5...............................1 CBX-D5 features............................................1 Operating manual organization......................1 Important Notice ............................................1 Unpacking .....................................................2 Installation......................................................2 Trademarks...........................................
Introduction Introduction 1 1 1 Introduction Welcome to the CBX-D5 Thank you for purchasing a CBX-D5 Digital Recording Processor. Connecting the CBX-D5 to a controlling computer with supporting software and an external hard disk will provide up to four channels of CD quality audio recording, processing, and playback. CBX-D5 features • • • • • • • • • • • • 4-channel system: 2-channel simultaneous recording, 4-channel playback. A/D conversion: 16-bit linear ∆ Σ modulation.
2 2 Chapter Chapter 1 : Introduction 1 : Introduction Unpacking The CBX-D5 packaging should contain the following items. 1 CBX-D5 1 Power cable 1 8-pin mini DIN cable 1 MIDI cable 1 SCSI cable (50 to 50 Amphenol) 1 SCSI terminator 1 Rack-mount kit (L & R set) 1 Hardware Test Program Disk 1 Test Program Manual 1 This Operating Manual 1 System Setup Guide 1 User Registration Card Serial No: Store the packaging materials for future use.
CBX-D5 CBX-D5 Terminology Terminology 3 3 2 CBX-D5 Terminology SCSI Pronounced scuzzy, the Small Computer System Interface is a connection format used for connecting peripheral devices such as hard disks, printers, scanners, etc., to a computer. Up to eight SCSI devices can be connected together in a daisy chain including the controlling computer. Each device is given its own identity number from 0 to 7, this is called the SCSI ID number.
4 4 Chapter Chapter 2 : CBX-D5 2 : CBX-D5 Terminology Terminology Sampling frequency (REC FREQ) During the analog to digital conversion process, the level of the analog audio signal is sampled (measured) many times per second. Each of these sample measurements is then stored as a 16-bit binary value. For digital to analog conversion (playback), these 16-bit binary values are used to reconstruct the analog audio signal.
What What is the is the CBX-D5? CBX-D5? 5 5 3 What is the CBX-D5? The CBX-D5 is a Digital Recording Processor that, when connected to a controlling computer with supporting software and an external hard disk, provides up to four channels of CD quality audio recording, processing, and playback. Computer based The CBX-D5 is controlled by a computer that is running CBX-D5 supporting software. All audio data processing takes place inside the CBX-D5, so there is very little demand on the controlling computer.
HOST COMPUTER SCSI HARD DISK 1 SCSI HARD DISK 2 MIDI MIDI AUDIO WORDCLOCK Fs CONVERTER MIDI IN, or TO HOST EQ DEQ DEQ DEQ DEQ RECORD WORDCLOCK INPUT MONITOR SIGNAL PATH CONTROLLER VOLUME, PITCH SYNC PLAY CONTROL PLAY CONTROL PLAY CONTROL Fs CONVERTER Fs CONVERTER PLAY CONTROL Fs CONVERTER Fs = Sampling Frequency PLAY BUFFER (RAM) CBX-D5 SCSI CONTROLLER MIDI OUT, or Serial port SCSI RECORD BUFFER (RAM) INPUT LEVEL METERS OUTPUT LEVEL METERS DSP EFFECTS 4 INPUT 4 BUS 2 SEND
TheThe CBX-D5 CBX-D5 in ainMIDI a MIDI recording recording system system 7 7 The CBX-D5 in a MIDI recording system The following diagram shows how the CBX-D5 can be integrated into a MIDI sequencer based music production system.
8 8 Chapter Chapter 4 : Controls 4 : Controls & Connections & Connections 4 Controls & Connections Front panel 1 POWER switch Used to turn the power on and off. Press once to switch on, press again to switch off. 2 SOURCE indicators Indicates the input selected for recording: AES/EBU, Y2, CD/DAT, or ANALOG. The source input selection is made by the controlling software. 3 REC FREQ indicators Indicates the selected sampling frequency for recording: 48kHz, 44.1kHz, 32kHz, and 22.
Front Front panel panel 9 5 9 INPUT LEVEL meters Two 12-segment LED bargraphs indicate the level of the incoming digital audio when the input source is set to AES/EBU, CD/DAT, or Y2 (not affected by the level controls), or the level of the analog input signals when the input source is set to ANALOG (controlled by the “ANALOG IN” level controls).
10 10 Chapter Chapter 4 : Controls 4 : Controls & Connections & Connections Rear panel The explanations below are only brief introductions to the CBX-D5’s rear panel connections. For full details about the inputs and outputs, see “Inputs & Outputs Explained” on page 26. 1 ANALOG IN 1&2 A pair of female XLR 3-31 type connectors used for inputting analog audio signals. These are balanced inputs with a nominal input level of +4dBm and a maximum input level of +22dBm.
RearRear panel panel 11 11 4 AES/EBU OUT 1/2 & 3/4 Two male XLR 3-32 type connectors for outputting AES/EBU format digital audio. Channels 1 and 2 are output via “OUT 1/2”, and channels 3 and 4 via “OUT 3/4”. These could be used to transfer digital audio data from the CBX-D5 to professional digital audio equipment. 5 CD/DAT IN 1/2 A Phono/RCA jack for inputting CD/DAT format digital audio. Channels 1 and 2 are carried in the same connection.
12 12 Chapter Chapter 4 : Controls 4 : Controls & Connections & Connections 0 MIDI IN The CBX-D5 receives MIDI control data from the computer via this connection. To prevent the CBX-D5’s control data being delayed by other MIDI devices, the CBX-D5 should be the first device connected to your computer. Other MIDI devices should then be connected to the CBX-D5’s MIDI THRU connection. If your computer’s MIDI interface has two or three MIDI outputs, dedicate one for use with the CBX-D5.
Connecting Connecting Hard Hard DiskDisk Drives Drives 13 13 5 Connecting Hard Disk Drives Before connecting a hard disk drive, read through this chapter to familiarize yourself with SCSI and how a SCSI daisy chain should be setup. What type of hard disk? If you don’t already have a hard disk or are thinking of buying a larger one, see the supplied card for a listing of recommended disk drives. Hard disk size The following table shows approximate available recording times for various sizes of hard disk.
14 14 Chapter Chapter 5 : Connecting 5 : Connecting Hard Hard DiskDisk Drives Drives Choosing a hard disk If you plan to buy a hard disk that is not listed on the supplied card, the following specifications should be checked first. Specification Check Is it compatible with your computer? Notes Maybe it is advertised as compatible, or your dealer recommends it. Does it have two SCSI connectors? You need two to continue the SCSI daisy chain.
SCSI SCSI cables cables 15 15 SCSI cables Most SCSI devices are supplied with a SCSI cable, but if you need to buy one, make sure that it is designed for SCSI usage and that the connecters on either end of the cable are correct for your application. Cable length is an important issue, but it’s not the length of each individual SCSI cable, it’s the total length of the SCSI daisy chain that must not exceed 6m (20ft).
16 16 Chapter Chapter 5 : Connecting 5 : Connecting Hard Hard DiskDisk Drives Drives SCSI ID setting The SCSI bus is a parallel type connection, and data on the bus is available to all devices. However, communication will usually be between two devices only, so each device is allocated an ID number, like an address number. In this way, only the device with the ID number that is specified in the data will actually read and respond to the data.
SCSI SCSI termination termination 17 17 SCSI termination Unlike audio signals, digital signals only have two values: high and low (+5V and 0V). When no data is being transmitted, it is important that SCSI bus lines are kept in the high state (+5V), so that when data is transmitted there is a clear distinction between high and low pulses and the data is transferred without error. To achieve this, a device known as a SCSI terminator is connected in the SCSI daisy chain.
18 18 Chapter Chapter 6 : Working 6 : Working withwith Hard Hard Disks Disks 6 Working with Hard Disks After connecting your hard disk, setting the SCSI ID, and installing the SCSI terminator, you will need to format the hard disk before it can be used. If you have already powered up your system you will notice that there isn’t a disk icon representing the new disk drive on the desktop. This is because your computer could not mount the hard disk during boot-up, due to it not being formatted.
Hard Hard diskdisk fragmentation fragmentation 19 19 Hard disk fragmentation Hard disks record data into pre-formatted concentric tracks on a number of magnetic disks that are mounted around a common spindle. Tracks are further divided into sectors, and each sector can store 512bytes of data. On a newly formatted disk, files are recorded into a continuous series of sectors as shown below.
20 20 Chapter Chapter 7 : Recording 7 : Recording 7 Recording Sampling frequency (REC FREQ) The CBX-D5 can record at any one of four sampling frequencies: 48kHz, 44.1kHz, 32kHz (as specified by the AES), or 22.05kHz (analog input only). These sampling frequencies are commonly used for digital audio, and each has its own specific applications. The sampling frequency is set by the controlling software and the CBX-D5’s front panel REC FREQ indicators show the selected frequency.
Digital Digital input input levels levels 21 21 Digital input levels Digital input signals entering the CBX-D5 cannot be level adjusted. This is the same for most digital audio equipment, the idea being that once the level has been set during the original A/D conversion it should not need readjustment. It also simplifies the interfacing of digital audio signals between equipment.
22 22 Chapter Chapter 7 : Recording 7 : Recording Digital audio data containing SCMS SCMS (Serial Copy Management System) is a protection system designed to stop illegal digital copying of audio material. When a SCMS DAT recorder (most consumer DAT recorders) receives a digital input signal with the copy protect flag set to “protect”, it cannot enter record mode, making digital tape duplication impossible.
Playback Playback 23 23 8 Playback Playback frequency (PB FREQ) During playback, sound files are read from disk, processed in the CBX-D5, then output. The CBX-D5 can read sound files that were recorded at sampling frequencies between 11.025kHz and 48kHz. Once inside the CBX-D5, the data is processed at the currently set REC FREQ. Then it is output to the digital outputs at a rate determined by the PB FREQ, and to the analog outputs after analog to digital conversion.
24 24 Chapter Chapter 8 : Playback 8 : Playback Sound file regions Your controlling software may allow you to select a section of a sound file so that it can effectively be handled as an independent piece of sound data. Using different channels, the CBX-D5 can playback two overlapping sections from the same sound file simultaneously.
Converting Converting the the Sampling Sampling Frequency Frequency & Digital & Digital Audio Audio Format Format in Real in Real Time Time 25 25 9 Converting the Sampling Frequency & Digital Audio Format in Real Time When transferring digital audio data between equipment, it is sometimes necessary to convert from one digital audio format to another, say from CD/DAT to AES/EBU, or Y2 to CD/DAT. The CBX-D5 allows you to convert the digital audio format between CD/DAT, AES/EBU, and Y2 in real time.
26 26 Chapter Chapter 10 :10 Inputs : Inputs & Outputs & Outputs Explained Explained 10 Inputs & Outputs Explained ANALOG IN A pair of female XLR 3-31 type connectors used for inputting analog audio signals. These are balanced inputs with a nominal input level of +4dBm and a maximum input level of +22dBm. These inputs are intended for use with balanced line level signals, i.e., from a mixer, synthesizer, drum machine, etc.
AES/EBU AES/EBU IN 1/2 IN 1/2 27 27 AES/EBU IN 1/2 A female XLR 3-31 type connector for inputting AES/EBU format digital audio. This is a balanced type connection and two channels, 1 and 2, are carried in the same connection. This connection could be used when recording digital audio data from another hard disk recorder, a digital mixer, DAT recorder, or digital VTR. The AES/EBU format is used mainly on professional digital audio equipment.
28 28 Chapter Chapter 10 :10 Inputs : Inputs & Outputs & Outputs Explained Explained Y2 IN An 8-pin DIN socket for inputting Y2 Yamaha format digital audio. Two channels, 1 and 2 (left/right), are carried in the same connection. This could be connected to one of Yamaha’s digital audio products including the DMR8 Digital Mixer/Recorder, DMC1000 Digital Mixing Console, DRU8 Digital Recorder, SPX1000 Effect Processor, and the DMP series of Digital Mixers. Special cables are available for use with this format.
WORD WORD CLK CLK IN/OUT IN/OUT 29 29 The following table shows how the WORD CLK IN/OUT connections work with each word clock source. Word clock connections use coaxial BNC to BNC type cables. WORD CLOCK SOURCE CBX-D5 WORD CLK OUT CBX-D5 WORD CLK IN Outputs a word clock signal at the internal clock rate (REC FREQ). Outputs a word clock signal at the internal clock rate (REC FREQ). Outputs a word clock signal at the internal clock rate (REC FREQ).
30 30 Chapter Chapter 11 :11 TO: TO HOST HOST connection connection 11 TO HOST connection As well as the standard MIDI IN, OUT, and THRU connections, the CBX-D5 also has a “TO HOST” connection. This allows direct connection to computers that do not have a built-in or external MIDI interface. The CBX-D5 has four interface modes for connecting to a controlling computer: MIDI, Mac, PC-1, and PC-2. These interface modes are explained below. MIDI This mode is for use with a computer that has a MIDI interface.
MacMac 31 31 Mac This mode is for use with an Apple Macintosh computer that is not connected to an external MIDI interface unit. The CBX-D5 can be connected directly to one of the Apple Mac's serial (RS-422) ports. 1) Connect the CBX-D5’s “TO HOST” connector to one of the Apple Mac’s serial ports using the “Mac” connecting cable shown on page 33. 2) Set the CBX-D5’s “HOST SELECT” switch to Mac. 3) Switch on the Apple Mac and the CBX-D5. 4) Start the Apple Mac music software.
32 32 Chapter Chapter 11 :11 TO: TO HOST HOST connection connection PC-1 This mode is for use with an NEC PC-9801 type computer. The PC-9801 is a very popular computer in Japan. The specifications are the same as those for “PC-2” mode except for the baud rate. See “CBX-D5 Specifications” on page 37. PC-2 This mode is for use with an IBM PC/AT compatible, PS/1, or PS/2 type computer that does not have a MIDI interface card installed.
