Yamaha CRW-F1UX manual Technical Notes, Buffer Underrun Protection Function, Test writing

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Technical Notes

Buffer Underrun Protection Function

CD-R/RW drives are equipped with a buffer memory, which temporarily stores data that is being transferred. When the buffer memory becomes empty due to a delay of data transfer for any reason, a writing error happens. Such condition is defined as buffer underrun, and such an error is defined as a buffer underrun error.

Buffer Underrun Protection is featured in the CRW-F1UX drive.

When buffer underrun almost happens, Buffer Underrun Protection temporarily suspends the writing process. Writing resumes when enough data has accumulated in the buffer memory. Buffer Underrun Protection in the CRW-F1UX drive is extremely accurate, resulting in seamless recording before and after suspension.

Test writing

Test writing is a function to check for the possible occurrence of buffer underrun in your computer environment. When Buffer Underrun Protection of the CD writing software is activated, the test writing function cannot be operated. Buffer Underrun Protection should be deactivated to operate the test writing function.

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Contents Page FCC Information U.S.A Achtung Page English Safety Precautions Iii Page Precautions for Transportation WarrantyTable of Contents DiscT@2 Features of the CRW-F1UX DriveHigh speed writing/reading SafeBurn Enhanced stability writing technologyUSB interface USB Front Panel Names and Functions of PartsNames and Functions of Parts Rear PanelHandling Discs Precautions on UseCopyright Disclaimer of IndemnityCompatible Discs Disc shapeRecordable disc type CD-RW discs Writing/Rewriting speedHigh Speed CD-RW discs Ultra Speed CD-RW discs System Requirements Computer PC/AT compatibleImage file PCI USB cable Operating systemCD writing software Preparing the CRW-F1UX Drive Serial NumberSerial Number Connect the CRW-F1UX Drive Preparing the CRW-F1UX Drive Connect the included USB cable to the CRW-F1UX drivePower cable included Turn on the power switch of the CRW-F1UX drive Check Recognition of the CRW-F1UX Drive Install the Device DriversFor Windows XP/2000 Professional/Me For Windows 98 Second EditionFor Windows 2000 Professional Drive name is not shown or there is or markFor Windows 98 Second Edition/Me Install CD Writing SoftwareDisconnect the CRW-F1UX drive For Windows 2000 Professional/MeLoading/Ejecting a Disc Loading/Ejecting a Disc Manually Ejecting a Disc Are the AC adapter and the power cable connected properly? TroubleshootingIs the USB 2.0 interface card installed properly? Operating system does not start up properlyIs the CRW-F1UX drive turned on? Does the power LED light? Disc tray does not open when you press the eject buttonIs the disc tray opened when the computer is restarted? Is any CD writing software being used?No data can be read from a disc Disc is ejected without order or it comes out spontaneouslyPlayback of an audio CD CD-DA is inaudible For Windows Me Error message Buffer Underrun is displayed Other problems Firmware Checking the firmware version in the CRW-F1UX driveFor Windows XP/2000 Professional Supported Formats Write Read Play back *4 CRW-F1UX Drive SpecificationsCRW-F1UX Drive Specifications AC adapter LSE0107A1236 CRW-F1UX drive conforms to the following specifications CRW-F1UX Drive Specifications Safety/EMC ComplianceTechnical Notes Buffer Underrun Protection FunctionTest writing Disc-at-Once DAO Writing MethodsTrack-at-Once TAO Session-at-Once SAOPacket Writing Technical Notes Constant Linear Velocity CLV Constant Angular Velocity CAVPartial CAV Canada