Pioneer DR-944 User manual

Max.40XCAVATAPI
CD-ROMDRIVEUNIT
DR-944/DR914
OperatingInstructions
Pioneer Electronic Corporation

OB-U0192
2
StandardFeatures
•Internal5.25inchHalf-HeightCD-ROMDrive
•ATAPIInterface(SFF-8020)
•Max.40XDataTransfer
17.5X(innersideofadisc)to40X(outersideofadisc)maximum,28.8X(average)
•PowerTrayLoading
•ConformstoMPCLevel3specifications
•LowVibrationMechanism
•HighSpeedAccess: AccessTime 70msec(RandomAverage)
•HighSpeedSeek : SeekTime 60msec(RandomAverage)
•BufferMemorySize: 128kBytes
•IDEDataTransferMode
SupportsPIOMode4&DMAMultiWordMode2,UltraDMA33
•SupportsKODAKPhotoCD
•SupportsSingleandMulti-Session
•SupportsCD-XAReady
•SupportsCD-IReady
•SupportsCDExtra
•SupportsVideoCD
•SupportstoreadCD-RWdisc
•SupportsPowerSaveMode
•StereoAnalogAudioLineOutput
•DigitalAudioThroughATAPI(ReadCD/DA)
•HeadPhoneOutput&VolumeControlKnob (FrontPanel)
•Horizontal/VerticalOperation
•ForcedEjection

OB-U0192
3
NameofParts/Function/Setting
FrontPanel
1. DiscTray
Trayloading-unloadingisdonebypressingtheejectbutton.
PlacetheCD-ROMontothetraywiththelabelfacingup.
Placeadiscontotheinnerlowergrooveonthetrayincasean8cmdiscisused.
Presstheejectbuttonorpushthefrontpartofthetraygentlytoloaddisctray.
2. Head-PhoneJack(PHONES)
Stereominijackforhead-phone.
Adjust “VolumeControlKnob”minimumpositionbeforehead-phoneisconnected.
Theaudiooutputofrearpanelisactiveevenwhenhead-phoneplugisinsertedtothisjack.
3. VolumeControlKnob(Head-PhoneLevel)
Thisisthevolumecontrolknobforadjustingsoundlevelforhead-phone.
Whentheknobisturnedtotheright,thehead-phonevolumegoesup,andturnedtotheleft,the
volumegoesdown.
4. BUSYIndicator
Itislitwhendataonthediscisaccessed.
5. EjectButton
Thisbuttonisusedtoloadandunloadthetray.
6. ForcedEjectionHole
Whenadiscisstackedinthedriveandtheejectbuttondoesnotworktoopenthetray,insertastiffrod
intothisholeandpushgentlysothatthetraycomesout.Unloadthetraybyhandthenremovethedisc.
DonotusetheForcedEjectHoleexceptemergencycase,usetheejectbuttoninnormaloperation.
Beforeexecutingthisoperation,turnoffthepowersupplyandwaitmorethan1minutetilldiscrotationis
stopped.
NameofParts/Function/Setting

OB-U0192
4
RearPanel
1. DC Input
Pin
Name
Function
1
+12
Powersupplyinputof DC+12V
2
G
Ground
3
G
Ground
4
+5
Powersupplyinputof DC+5V
2. ATAPI Interface
ItshouldbeconnectedwiththeEnhanced-IDEportofthecomputer.Use40pinflattypecable.
Lengthofthecableislessthan18inchs(46cm)accordingtotheATAspecifications.
Itmaycausedatatransfererror,iflongercablemorethanabovevalueisused.
Pin
Name
Pin
Name
Pin
Name
Pin
Name
1
RESET-
11
DD3
21
DMARQ
31
INTRQ
2
GND
12
DD12
22
GND
32
IOCS16-
3
DD7
13
DD2
23
DIOW-
33
DA1
4
DD8
14
DD13
24
GND
34
PDIAG-
5
DD6
15
DD1
25
DIOR-
35
DA0
6
DD9
16
DD14
26
GND
36
DA2
7
DD5
17
DD0
27
IORDY
37
CS1FX-
8
DD10
18
DD15
28
CSEL
38
CS3FX-
9
DD4
19
GND
29
DMACK-
39
DASP-
10
DD11
20
(KEYPIN)
30
GND
40
GND
Remarks:Theminussignindicatesactivelow.

OB-U0192
5
NameofParts/Function/Setting
3. DeviceConfigurationJumper
Switchturnsonbyinsertingshortsocket.
Makesurethatdrivepoweristurnedoffbeforejumpersettingischanged.
OnlyMAis “on”atthetimeofshippingfromtheplant.
Pin
Name
Function
1
MA
on
Thedriveisusedin
MasterMode
.
2
SL
on
Thedriveisusedin
SlaveMode
.
3
CS
on
Using “CableSelect”function.
4
Reserved
5
Reserved
4. AudioOutput
Aconnectorforoutputofanalogaudio.
This connector is compatible with “Molex 70553”, choose a connection cable which matches with the
connector.
Pin
Name
Function
1
L
Leftchannelaudiooutput
2
G
Ground
3
G
Ground
4
R
Rightchannelaudiooutput

OB-U0192
6
Specifications
1. DiscFormat
•CD-ROM Mode1
•CD-ROM XA Mode2 (form1, form2)
•PhotoCD(singleandmultiplesession)
•VideoCD(4.4x–10x)
•CD-DA(4.4x–10xatAudioPlay,8.8x–20xatReadCD-DA)
•CD-Extra
•CD-RW(readonly,4.4x–10x)
•CD-IReady
2. DiscSize
•12cm
•8cm (4Xatdatadisc,Horizontaloperationonly)
PrecautionsonplayingCDsingles(8cmdiscs)
An8cmdisccanbeplayedonlywhenthedriveishorizontalconditionandthediscissetinthe
8cmgrooveonthedisctrayatloading.
Donotuseanadapterfor8cmdiscinanyconditionsforthisdrive,ormalfunctionmayoccur.
3. Data Transfer Rate
Parameter
Min.
Typ.
Max.
Unit
Note
inner 2250 2415 2625 kBytes/sec
Sustained
outer 6000 kBytes/sec
Max.40XCAVMode
Burst 4.0 33.3 MBytes/sec
Maximumdatatransferrateisspecifiedwithadiscof1.2m/slinearvelocity.
4. Buffer Memory Size
•128kBytes
5. AccessTime/SeekTime
Parameter
Min.
Ave.
Max.
Unit
Note
AccessTime 70 140 msec Random Average
CD-ROMMode1Disc
RandomSeekTime 60 90 msec Random Average
FullStrokeSeekTime 160 300 msec

OB-U0192
7
Specifications
6. InitializingTime/StartingTime/FinishingTime
Parameter Specification Note
InitializingTime
Lessthan10sec The period from a disc is set in the drive t
ill it becomes
pauseconditionafterinitialization.
StartingTime
Lessthan10sec
The period from stop condition after
finishing
initializationtillitbecomespauseconditionbyexecuting
startcommand.
StopTime Lessthan7sec
The period from pause condition till disc rotation is
stoppedbyissuingstopcommand.
7. LoadingTime/UnloadingTime
Parameter Specification Note
LoadingTime Lessthan4sec The period from a disc starts loading till it is
clumpedin
thedrive.
UnloadingTime Lessthan4sec
The time of disc unloading with stop condition by
pressingtheejectbutton.
8. AudioCharacteristic
Item Specification Note
Lineout 0.7 ±0.1Vrms 10kohmLoad
Output level
HeadphoneOut
0.45 ±0.2Vrms
32ohmLoad
S/NRatio Lineout Over80dB JISA-Weighted
20kHzLPFON
ChannelSeparation Lineout Over65dB
FrequencyResponse Lineout 20Hz~20kHz +1/-3dB
THD
Lineout
Lessthan0.1%
1kHz0dB
20kHzLPFON
PioneerElectronicCorporation
4-1,Meguro1-chome,Meguro-ku,Tokyo153,Japan