SK8811 final specWord文件下载.docx
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SK8811 final specWord文件下载.docx
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May28,2001
InitialDraft
JaneCao
0.2
Jun8,2001
Verify2.1.2&
2.4
A
Jul7,2001
Add5.15
TableofContents
1General5
2MechanicalSpecifications5
2.1DimensionsandWeight5
2.2MaterialandTexture5
2.3Color6
2.4Detachabilityandcableexit6
2.5ServicesandErgonomics6
2.6Characteristicsofrubberswitches7
2.7keyCapSpecification8
3ElectricalSpecification9
3.1Operatingvoltage9
3.2CurrentConsumption9
3.3PowerConsumption9
3.4SignalTimingandLevel9
3.5Pinoutof6pinmin-DINconnector9
3.6Circuitry9
4FunctionsandFeatures10
4.1OperationModesandIndicators10
4.2KeyboardBuffer10
4.3Typematicdelayandrepeatrate10
4.4PseudoN-Keyrollovercapability11
4.5Freefromillegalghostkeys11
4.6SelfTest12
4.7InterfacespecificationwithhostPC12
4.8LogicSignals12
4.9AT&
PS/2ModeProtocol13
4.10Commandsfromthehost(AT/PS2Mode)14
4.11Commandtothehost(AT/PS2Mode)17
5.EnvironmentalandReliabilitySpecifications19
5.1Temperature&
HumidityTest19
5.2ElevatedTemperature19
5.3ThermalCycle19
5.4TemperatureShock20
5.5DropTest20
5.6VibrationTest21
5.7Rigidity21
5.8StainResistance21
5.9ChemicalResistance22
5.10CrushResistance22
5.11Wearresistance23
5.12UltraVioletLight23
5.13MetalMigration23
5.14CorrosiveEnvironment23
5.15SpillResistance24
6RegulatoryCertification25
6.1Safety25
6.2EMS25
6.3EMI25
7KeyboardScanCode26
7.1Typematiccharacteristics26
7.2ScanCodeTable(Showedasbelow)26
1General
SK-8811(A)isdesignedforIBM.ItisdesignedspecificallytomeettherequirementsofthePCcompatiblecomputermanufacturer.Thisspecificationdefinesmechanical,reliability,dynamic,electricalrequirements.
Thekeyboardisthedetachablespacesaverrubberswitchkeyboard.Itisconfigurablefor106/107/108/109/111keylayoutwithlanguagesaccordingtocustomerrequested.Threespecialfunctionkeys,L-win,R-winandapplicationallowthiskeyboardtobeusedwin95,win98,win2000andNT.
Comparison
Description
SK-8811(A)
SK-8811
Enclosure
Topinsk-8806andButtoninsk-8809
Newtoolwithoutmodular
EMC/Safety
NoMIC
Showedas6.1,6.2&
6.3
PCB
Useconnector,doubleside
Userubberpress,singleside
Cable
2meters,Φ4.5
2meters,Φ3.8
Spillresistance
No
Yes,showedas5.15
2MechanicalSpecifications
2.1DimensionsandWeight
2.1.1Unpacked
(1)Dimensions(Tolerance:
+/-3mm)
LengthDepthHeight
415mm180mm39mm
(2)Weight(Tolerance:
+/-0.1kg)
Measuredbarekeyboard:
0.68kg
2.1.2Packed-Includingpacking/bufferingmaterial
+/-3mm)
445mm221mm(34~58)mm
TheGiftBoxisslopeddesign.
Measuredwithgiftboxandbuffering:
1.0kg
2.2MaterialandTexture
UppercaseworkHI-PS94HB
LowercaseworkHI-PS94HB
BracketHI-PS94HB
KeycapsABS94HB(TECHNOK4forblackccolor)
RubbersheetswitchLIMSRubber
LEDLensPMMA
2.3Color
Uppercasework:
IBMstealthblackorPearlwhite
Lowercasework:
IBMstealthblackorpearlwhite
KeyCap:
Stealthblack,Ravenblackandblueorsagegray,pearl
whiteandsteelblue.
Plasticflipfoot:
IBMstealthblackorPearlwhite
Rubberfoot:
Blackorsagegray
Cableconnector:
Panton2715C
Cable:
IBMlogo:
IBMblueforPearlwhite&
PMS877Cforstealthblack
2.4Detachabilityandcableexit
Thereare4exitsonlowercaseworkforcableroutingpurpose.Cableoutsidesis2metersinlengthanda6pinmini-DINconnector.
2.5ServicesandErgonomics
2.5.1KeycapsheightprofilemeetDINstandardwithheightofCrowunder30mm.
2.5.2LegendprintingonkeycapsmeetsANSIstandard,whichappliestoallkeys,theprintedcharactersarevisiblewithin30cmdistancefromanyviewingangleandprintingcontrastexceeds3:
1(4:
1forblackkeyboard)under500Luxilluminatedbackground.
2.5.3Adjustabletiltlegslocatedinlowercaseworkallowunittobeadjustedtothemostcomfortableangleforusertooperate.
2.5.4Tactilefeelingfeedbackforusersensurespropermakeandbreakforeachkeypress.
2.5.5Suitableanti-slipforcesgivenbyrubberfeetpreventunitfrommovingundernormaloperation.
2.5.6Acousticnoisegeneratedbykeypresslessthan65dBAforspacebarand60dBAforallotherkeys.
2.5.7AwarninglabelcanbelaserprintedonthekeyboardbetweentheQWERTYsectionandthenumerickeypadsection.
2.6Characteristicsofrubberswitches
2.6.1Standardkeyslifecycle
10millionscyclesundernormaloperation.(6cycle/second,15-20lbs.)
after10millionlifecyclesreturnforcenolessthan10grams.
Force
(gram)P1
57g
P2
25g
0.82.03.7mmTravel(mm)
Fig2-1Typicalcurveofforceresponse:
2.6.2Majorspecificationofrubberswitch
PreloadForce:
25.0+-10gram(ISO25-75%ofPeak)
P1Peakforce:
57.0+/-10grams
Travel:
0.8+/-0.25mm
P2Force:
28+/-10grams
2.0+/-0.3mm
Bounce:
5msmax.
Returnforce:
20+/-10grams
Traveltomake:
MakeForce:
37.0+-10grams
Totaltravel:
3.7+/-0.4mm
2.7keyCapSpecification
2.7.1RetentionForce
1.3kgminimumtopullupthekeysfromframe
2.7.2Gaps
Gapsbetweenadjacentroworcolumnofkeys:
1.05+/-0.3mm
2.7.3StaticWobble
Wobbleofkeysisdefinedhereasmovementofpointsfromitsoriginalpositionwhenforceisapplied.
Wobbleundernormaltypingforce:
Forstandardkeys:
<
0.50mm
Forspacebar:
1.65mm
Forotherspecialkeys:
3ElectricalSpecification
3.1Operatingvoltage
Voltagesuppliedtokeyboard:
5+/-0.25VDC
3.2CurrentConsumption
Undernominal5VDCpowersupplied,typicalcurrentconsumptionis75mA+/-10%forEMCIC.
3.3PowerConsumption
Undernormaloperation,themaximumpowerconsumptionwillbelessthan
0.375Watt.
3.4SignalTimingandLevel
LevelandtimingofsignalspresentedondataandclockpinsarecompatiblewithbothTTLorMOSterminationonthehostPCmotherboard.
3.5Pinoutof6pinmin-DINconnector
CompatiblewithIBMPS/26pinDINconnection.
3.6Circuitry
3.6.1PCBA
MicroprocessorEMCCMOStechnologyperformsmostfunctionsinternally.ComponentsandcircuitryarelaidoutandroutedonsinglesidePCB.
3.6.2Membrane
Keymatrixtraceswithswitchcontactfingersarelaidoutandroutedona3layersmembranesheet.Thecontactresistanceislessthan400ohm.
3.6.3ConnectingPCBAandMembrane
MechanicalclampingmechanismprovidescontactbetweenmembraneandPCBAforconnectionscanlinesandreturnlinesonmembranekeymatrixtoPCBAcircuitviacontactfingers.
4FunctionsandFeatures
4.1OperationModesandIndicators
ThreeoperationmodeLEDslocatedonrightuppercornerofuppercaseworkwillactivateindividuallyorincombinationaccordingtodefinitioncompatiblewithIBMATandPS/2.Thethreeindicatorshavethenomenclature‘NumLock’,’CapsLock’and‘ScrollLock’.Theyareactivatedandde-activatedbyreceivingatwobytesystemcommandcodeHexEDXXfromhostPC.
4.2KeyboardBuffer
A16keyFIFObufferstoresthescancodesuntilthehostisreadytoreceivethem.Bufferoverrunoccurswhenmorethan16keysarestoredwithoutbeingsent.Anoverruncodereplacesthe17thkeytobestoredinthebuffer.Additionalkeyspressedwillcauselossofdataifthehostiskeptbusyandthekeyboardisunabletosendoutthecontentsinthebuffer.
4.3Typematicdelayandrepeatrate
Allkeysaretypematic,exceptforthePAUSEkey.Whenakeyispressedandhelddown,thekeyboardwilldelay500msec,thensendthemakecode.Makecodeofthekeybeinghelddownwillbesentrepeatedlyattherateof10.9characterspersecond.Iftwoormorekeysarepressedandhelddown,onlythelastkeypressedwillberepeatedattherepeatrate.Whenthelastkeyisreleased,typematicoperationstops,evenifotherkeysarestillhelddown.Ifakeyispressedandhelddownwhilekeyboardtransmissionisdisabled,onlythefirstkey’smakecodeisstoredinthetypeaheadbuffer.Thispreventsatypeaheadbufferoverflowwhenthetypematicoperationacts.IntheATmode,thetypematicdelayandrepeatratecanbeprogrammable.Thisisdonebycommandfromhost.
DefaultRepeatRateandTypematicDelayare:
Repeatrate:
10.9characterspersecond
Typematicdelay:
500msec
4.4PseudoN-Keyrollovercapability
‘N’keyrollisthenumberofkeysthatmaybehelddepressedsimultaneouslyandhavethekeyboardgeneratetheappropriatecodeforeachpressedandreleasedkeywithoutkeyboardinterruption.AllcombinationsofCtrl,AltandShiftkeysarenotghostkeys.
4.5Freefromillegalghostkeys
Keymatrixlayouthasbeenproperlymanagedsuchthatnoghostkeyoccursforanythreekeycombination.Theghostkeyisdefinedasthreekeycombinationwhereavalidthirdkeyfallsinthe‘#’patterninthekeymatrixformedbytheproceedingvalidtwokeycombination.Normallyinthiscase,thethirdkeywillbemaskedwithoutsendinganycodebecausethethirdkeyandfourthkeyinthis‘#’patternareconfusingthemicroprocessorofthekeyboard.Ifthethirdkeywasnotmaskedproperly,theghostkey—differentkeypresseshavingthesameelectricalconnectioninscanlinesandreturnlinesmatrix–willoccur.
Someexceptionsare
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