background image

Introduction

3

Introduction

Congratulations on the purchase of your Toshiba ATAPI CD-ROM drive. Read carefully 
through this manual in order to install the drive and learn how to use it. For specification 
details of your CD-ROM drive, see the accompanying specification booklet.

A New Type of Drive

Early CD-ROM drives operated using CLV (Constant Linear Velocity) where the 
amount of data passing under the read head was always constant. This meant that the 
rotation speed varied depending on which part of the disk was being read - faster spin for 
the inside of the disk and slower spin for the outside.

Your Toshiba CD-ROM drive uses advanced PCAV (Partial Constant Angular Velocity) 
which fixes the rotation speed for some parts of the disk. The drive switches 
automatically between CAV to achieve the fastest possible access times and CLV to 
achieve the fastest possible sustained data transfer rate.

This means that the old designations of fixed rotation speed are less helpful with this 
new type of CD-ROM drive - the disk spins at different speeds during different 
processes.

The REAL Test

Just spinning the disk faster does not necessarily mean the data is accessed or transferred 
any faster. One of the reasons for this is that the laser head must be moved in and out 
between the centre and the edge of the disk. The quality of the motor which moves the 
laser head is vital as it must accelerate and then stop at exactly the right place on the disk 
many thousands of times at incredible speeds.

The quality of the laser mechanism, on-board caching, error correction techniques, the 
type of interface and the driver software can all have an effect on the access speed and 
transfer rate. This means that a CD-ROM drive rated at a certain data transfer speed 
might not really be able to achieve that speed because of bottlenecks elsewhere in the 
drive

A drive with slow seek time, poor caching and poor error correction will cause 
performance problems. Multimedia applications expect data to be delivered at an 
acceptable rate. If the data is not delivered fast enough you notice a degradation in sound 
or video quality while the computer waits for the next block of data from the CD-ROM 
drive. Sometimes the poor data transfer speed can cause synchronisation between audio 
and video material or between data and graphics to fail.

Содержание ATAPI

Страница 1: ...ATAPI CD ROM Drives Installation Manual www toshiba teg com ...

Страница 2: ...the Jumpers 7 The Setup Jumper 7 Find a Free Drive Bay 9 Fit The Drive 10 Connect the Drive to your IDE Controller 10 Connect the Drive to a DC Power Lead 10 Connect a Sound Cable to your Drive 11 Replace the Computer s Case 11 CD ROM Driver Software 11 DOS and Windows 3 x 11 Windows 95 12 Care and Use of Your CD ROM Drive 12 The Controls 13 Operating the Disk Tray 14 The Audio out Connectors 14 M...

Страница 3: ...prior written permission of Toshiba No patent liability is assumed however with respect to the use of the information contained herein 1997 Toshiba Europe GmbH Disclaimer This manual has been validated and reviewed for accuracy The included sets of instructions and descriptions were accurate at the time of this manual s production However succeeding CD ROM drives and manuals are subject to change ...

Страница 4: ...nt processes The REAL Test Just spinning the disk faster does not necessarily mean the data is accessed or transferred any faster One of the reasons for this is that the laser head must be moved in and out between the centre and the edge of the disk The quality of the motor which moves the laser head is vital as it must accelerate and then stop at exactly the right place on the disk many thousands...

Страница 5: ...drive to an existing IDE controller load the supplied drivers and go see page 12 The enclosed Performance Specification booklet includes full details of access times and electrical characteristics of your drive What Happens Next This manual shows you how to set up and install your CD ROM drive You will need a small cross head screwdriver and enough room to take the case off your computer NOTE Befo...

Страница 6: ...or by an EIDE controller built in to the motherboard Check the user manual supplied with your computer for details of how the disk drive or drives in your computer are connected Newer controllers have two channels that means two EIDE cables can be attached to the controller and each one can have two storage devices attached to it For your disks drives and your CD ROM drive to provide their best pe...

Страница 7: ...a power cable to your drive Connect sound cables to your drive optional Replace the computer s case Load the driver software to make your computer recognise the CD ROM drive If you are not familiar with the inside of your computer or if you feel the need for a little help find someone who has more experience and who can give you a hand If there is no one to help don t worry every step of the way i...

Страница 8: ...owards the left as you look at the back of the drive The settings of these switches may need to be changed depending on your needs The two settings for each switch are ON and OFF sometimes referred to as 1 and 0 If the connector plug connects the two pins the switch is ON if the connector plug touches only one pin or is not present the switch is OFF The Setup Jumper The Setup jumper switches look ...

Страница 9: ...ter Slave Switch These switches are used to set the configuration mode for the drive Only one jumper should ever be fitted to this switch block A computer which communicates with its disk drives using an IDE controller may use two cables the primary cable and the secondary cable Each cable may carry up to two drives one configured as a master drive and the other configured as a slave drive The dri...

Страница 10: ...front of the slot This is sometimes clipped in place or sometimes fixed with two screws Remove the cover plate ready to fit the drive Primary cable Secondary cable Notes Master Slave Master Slave ATA hard disk drive One hard drive on one cable ATAPI CD ROM MASTER One CD ROM drive on one cable ATAPI CD ROM MASTER ATAPI CD ROM SLAVE Two CD ROM drives on one cable ATA hard disk drive ATA hard disk dr...

Страница 11: ... drive just note which way it attaches and reattach it the same way when you have finished The CD ROM drive or the hard disk drive can use either plug on the IDE cable so don t worry if you have to change their positions The 40 pin connector fits into the interface connector on the back of the drive One edge of the ribbon cable is marked with a stripe or is coloured red this connects to pin 1 on t...

Страница 12: ...page 14 You will need to refer to the instructions which accompanied your sound card for details of any sound driver software required Replace the Computer s Case You can now push the drive all the way into the slot and if necessary fix it in place with screws on either side Replace the computer s cover and replace all of the fixing screws CD ROM Driver Software Your Toshiba CD ROM drive is suppli...

Страница 13: ...oes not need any special drivers for Windows 95 As a plug and play operating system Windows 95 is complete with drivers to support all popular peripherals including ATAPI CD ROM drives Some older computers may be unable to support all plug and play features of Windows 95 On these systems Windows 95 allows the use of conventional DOS drivers as supplied with the this drive and described above under...

Страница 14: ...he computer Emergency Eject If the power supply to the drive fails you can still remove the disk from the drive Next to the eject button on the front of the drive is a small opening Insert a pointed instrument a straightened paper clip is ideal into the opening and the disk tray will open The Headphones Socket The headphones socket is used to connect headphones to your CD ROM drive However it can ...

Страница 15: ...ess the Eject button Loading a Disk After putting a disk into the drive gently push on the front of the open disk tray The tray automatically slides into the drive The Audio out Connectors Audio output is through a dual 4 pin 2 pin analogue digital connector Connect only to the matching fitting part number 70066 made by Molex Corporation or equivalent The connector is wired as follows Digital out ...

Страница 16: ...n 20 of the horizontal or within 10 of the vertical The drive has 12 screw mounts of size M3 The length of the screw underside of screw head to tip of screw should not exceed 3 0 5mm External Dimensions and Mounting Points 146 139 7 6 79 2 47 4 190 149 5 4 x M3 4 x M3 41 5 11 5 10 43 ...

Отзывы: