Yamaha CRW2200S manual About CD-ROMs, About Partial CAV Constant Angular Velocity

Page 14

Before Use

About CD-ROMs

A CD-ROM disc is a compact disc containing high-density read-only data. It has many applications, including the playback of music and video, the archiving of data, as well as on-line documentation. The following are descriptions of each CD-ROM format:

CD-DA: Up to 79 minutes of stereo audio is written in 16-bit resolution at a sampling rate of 44.1kHz for a 79 minute disc.

Data CD: Up to 700 megabytes of computer data is stored in standard ISO9660 format for a 700MB disc.

Video CD: These hold movies in which the video and audio data has been compressed using MPEG-1 technology.

About Partial CAV (Constant Angular Velocity)

Writing to a CD-R disc is normally done using the CLV (Constant Linear Velocity) method. In this method, the disc rotation speed will be so adjusted as to keep a constant data transfer rate at any portion of the disc. In other words, the disc rotation speed will vary in CLV writing.

In contrast, the CAV (Constant Angular Velocity) method uses a constant disc rotation speed for all portions of the disc so that the data transfer rate will vary. Because the CAV method has the advantage of largely increasing the data transfer rate with a minimum load to the drive’s mechanism (compared to CLV’s rotation speed adjustment), many current CD-ROM drives use the CAV method. CD formats define the constant linear density of written data (data should be written onto the disc track in the constant pitch) so that the amount of recorded data per disc rotation will increase as the writing point moves from the inner to the outer. In other words, in CAV writing the outer portion has an increased data transfer rate.

The CRW2200 drive uses the CAV method in the inner portions as well as the CLV method in the outer portions (Partial CAV) in order to enable up to 20X- speed writing. The drive will control the disc rotation speed to start writing at 12X speed in the inner portions, gradually accelerating up to 20X speed and maintaining 20X speed in the outer portions.

6

Image 14
Contents Page FCC Information U.S.A Achtung English Safety Precautions Iii Warranty Table of Contents Scsi convertor → Scsi Connection Set Up P→ E-IDE Atapi Connection Set Up P Features of the CRW2200 drive IntroductionIntroduction Buffer Underrun DefinedYamaha Buffer Underrun Protection These are also required for Scsi connection Before UseSystem Requirements CD-RW discs*2 Supported DiscsCD-R discs*1 High Speed CD-RW discs*3About CD-ROMs About Partial CAV Constant Angular VelocityAbout 10X-speed writing/rewriting of a High Speed CD-RW disc Serial Number Serial number Letters and 7 digitsFront and Rear of Unit Front PanelRear Panel with the Scsi Convertor ➂ Jumper switch ➀ Digital Audio OUT connector➁ Analog Audio OUT connector ➄ DC Input connectorPhillips Screwdriver Scsi Connection Set UpTools Long-Nosed PliersCRW2200S Setup Flowchart Scsi Connection Set UpShut down your computer and unplug it from the AC outlet Connecting the CRW2200SOpening the Computer Cover Front panelDischarge any static charge Connect the audio cable to the CRW2200 drive. If necessary Connecting the analog audio cableAudio cable connection Left L Ground G Right R Audio cable To Sound cardConnecting the digital audio cable Ground G Signal D Digital audio cable To Sound cardInstalling the Scsi Convertor to the CRW2200 drive ScrewYellow wire DC InputRear Panel Setting the Jumper SwitchesJumper switches ➀ Scsi ID Number Scsi ID➁ Parity Check ➂ Termination➃ Block Size Block size OFF Default Block size onSet to on when installing WorkstationCD-ROM drive As a replacement driveChoosing the Connection Method Inch drive bay slot Front cover Installing the CRW2200SAudio cable Pin IDE cable Pin power cable Colored line connector Scsi connector 50-pin Scsi flat cable MotherboardDigital audio cable Sound card SpdifTop Bottom Power cable Pin power cable Reconnect the computer to the AC outlet and turn it on Configuring for the Operating System For Windows NTInstalling the CD Writing Software Install the CD writing softwareRemoving the Scsi convertor Removing the Scsi convertorAudio cable Pin Scsi flat cable Pin power cable Removing the Scsi convertorRemove the Scsi convertor from the CRW2200 drive IDE Atapi Connection Set Up CRW2200E Setup Flowchart IDE Atapi Connection Set UpConnecting the CRW2200E Choosing the Connection Method Slave Motherboard Primary Master Secondary SlaveMaster Typical IDE-type hardware installationAbout IDE Connecting examples Example-1 As secondary slave For supplemental driveIDE Atapi Connection Set Up About the Csel jumper switch Rear Panel Master Slave factory settingInstalling the CRW2200E As an supplemental driveConnect the audio cable. If necessary Ground G Signal D Digital audio cable Top DC Input connector Bottom Pin power cable Configuring for the Operating System About DMA Settings Setting of Transfer Mode About DMA Ejecting a Disc OperationLoading a Disc Manual Eject hole Paper Clip Ejecting a Disc in an EmergencyOperation Troubleshooting Yamaha CD-R/RW Drives web site URL EuropeTroubleshooting Disc keeps being ejected Properties setting of the CRW2200S Setting of the Windows Media PlayerBuffer Underrun error message is displayed Disc-at-Once DAO AppendixWriting Modes Track-at-Once TAOAppendix Session-at-Once SAOPacket Writing About firmware URL for Yamaha CD-R/RW Drives web sites EuropeLED Indicator Messages Status Ndicator essages LED olorCD-RW CRW2200 drive CRW2200 series complies with the following specifications Symbols IndexPhillips Screwdriver 12, 32 EUROPE, Eastern Europe Russia