instructions for use - keeler · portable slit lamp illumination body and magnification optics 1....
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Instructionsforuse
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Contents1. Introduction
2. Symbols
3. Indicationsforuse
4. Intendeduse/purposeofinstrument
5. Briefdescriptionoftheinstrument
6. Safety
7. Cleaninganddisinfectioninstructions
8. Transport,storageandworkingconditions
9. Warningsandcautions
10.Namesofcontrolsandcomponents
11. Instructionsforuse
Preparing the power supply and the base unit
Preparing the Portable Slit Lamp prior to use
Preparing the patient
12. Problemsolving
13. Changingthebulb
14. Routineinstrumentmaintenance
15. Specificationsandelectricalratings
16. Technicalspecifications
17.Accessories
18. Contact,packaginganddisposalinformation
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As part of our policy for continued product development we reserve the right to amend specifications at any time without prior notice.
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1. IntroductionThankyouforchoosingthisKeelerproduct.
PleasereadthismanualcarefullybeforeusingyourrechargeableKeeler
PortableSlitLamp,thiswillensurethesafetyofthepatientandensure
yougetthebestperformancefromthisprecisionopticaldevice.
Your Keeler Portable Slit Lamp includes:•PortableSlitLampilluminationbodyandmagnificationoptics
•Basechargerunit
•Powersupply–switchmodeallvoltages/frequencies(Part1941-P-7778)
•Userinstructionsandquickguide
•Lenscloth
Theinformationcontainedwithinthismanualmustnotbereproduced
inwholeorpartwithoutthemanufacturer'spriorwrittenapproval.The
manufacturerreservestherighttomakechangestospecificationsand
otherinformationcontainedinthisdocumentwithoutpriornotice.
Copyright©KeelerLimited2009.PublishedintheUK2009.
Please read and follow these instructions carefully.
PortableSlitLamp,thiswillensurethesafetyofthepatientandensure
•Powersupply–switchmodeallvoltages/frequencies(Part1941-P-7778)
Theinformationcontainedwithinthismanualmustnotbereproduced
inwholeorpartwithoutthemanufacturer'spriorwrittenapproval.The
manufacturerreservestherighttomakechangestospecificationsand
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2. Symbols ReaduserinstructionsforWarnings,Cautions
andadditionalinformation
Doubleinsulated
TypeBprotectionsagainstshock
Consultinstructionsforuse
Manufacturersnameandaddress
ThisSymbolontheProductoronitsPackaging
andinstructionsindicatesthatitwasputonthe
marketplaceafterAugust2005andthatthis
productshallnotbetreatedasHouseholdWaste.
Keepdry
Powerinputport
Fragile
Thiswayup
Materialsuitableforrecycling
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KeelerPSLClassicSlitLampisanAC-poweredSlitlamp
biomicroscopeisintendedforuseineyeexaminationofthe
anterioreyesegment,fromthecorneaepitheliumtothe
posteriorcapsule.Itisusedtoaidinthediagnosisofdiseasesor
traumawhichaffectsthestructuralpropertiesoftheanterior
eyesegment.
Thisdeviceisintendedtobeusedonlybysuitablytrainedand
authorisedhealthcareprofessionals.
3. Indications for use
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TheSlitLampisaninstrumentconsistingofalightsource
thatcanbefocusedtoshineathinsheet(slit)oflightintothe
eye.Itisusedinconjunctionwithabiomicroscope.Thelamp
facilitatesanexaminationoftheanteriorsegment,orfrontal
structuresandposteriorsegment,ofthehumaneye,which
includestheeyelid,sclera,conjunctiva,iris,naturalcrystalline
lens,andcornea.ThebinocularSlitLampexaminationprovides
stereoscopicmagnifiedviewoftheeyestructuresindetail,
enablinganatomicaldiagnosestobemadeforavarietyof
eyeconditions.
4. Intended use / purpose of instrument
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TheKeelerPortableSlitLampcomprisesarechargeablehand
heldportableilluminatedbiomicroscopesystemandadesk
mountedbasechargerunitthatispoweredfromalowvoltage
(12V)powersupply.
Thehandheldunitincorporatesalithiumionrechargeable
batterypoweringtheilluminationsystem.Theillumination
systemandfixationtargetsareactivatedusingadoubleclick
triggerlocatedonthefrontofthegrip/handle.Toincreaseor
reducethelightintensitythereisarheostatlocatedbelowthe
eyepiecesontherearofthegrip/handle.
The10xand16xmagnificationopticalsystemiscontrolledusing
aflipleverlocatedundertheadjustableeyepieces.
TheKeelerPortableSlitLampcomprisesarechargeablehand
heldportableilluminatedbiomicroscopesystemandadesk
mountedbasechargerunitthatispoweredfromalowvoltage
Thehandheldunitincorporatesalithiumionrechargeable
batterypoweringtheilluminationsystem.Theillumination
systemandfixationtargetsareactivatedusingadoubleclick
triggerlocatedonthefrontofthegrip/handle.Toincreaseor
reducethelightintensitythereisarheostatlocatedbelowthe
eyepiecesontherearofthegrip/handle.
The10xand16xmagnificationopticalsystemiscontrolledusing
aflipleverlocatedundertheadjustableeyepieces.
5. Brief description of the instrument
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6. SafetyTheKeelerPortableSlitLampisdesignedandbuiltinconformity
withECDirective93/42/EECandtheISO9000andEN46000
seriesqualitystandards.
The(EuropeanCommunity)markatteststhattheSlitLamp
complieswiththeprovisionsofAnnexesI,VI,andVIIofEC
Directive93/42/EEC.
Classification: CERegulation93/42EEC:ClassI
FDA:ClassII
Productionprocesses,testing,start-up,maintenance,andrepairs
areconductedinstrictconformitywiththeapplicablelawsand
internationalreferencestandards.
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6. SafetyWhenusingtheinstrument,scrupulouslyobservealltherelevant
accidentpreventionmeasuresestablishedbylawtoensurethe
safetyofthepatient.
Itiswellestablishedthatexposureoftheeyetointenselightsources
forextendedperiodsoftimeposesariskofretinalphoticinjury.
Manyophthalmicinstrumentsilluminatetheeyewithintenselight.
ThelightlevelsontheKeelerSlitLampiscontinuouslyadjustable
frommaximumtozero.Inadditionthereisaninfraredfilter
incorporatedintheilluminationsystemtoreduceIRlightlevels.
Novisibleretinallesionshavebeenidentifiedasaresultofusing
KeelerSlitLamps,howeveryoungchildrenandpersonswith
diseasedeyesmaybeatahigherrisk.Theriskmayalsobeslightly
increasedifthepersonbeingexaminedhashadanyexposure
withthesameinstrumentoranotherophthalmicinstrument
usinganintensevisiblelightsourceduringtheprevious24hours.
Thiswillapplyparticularlyiftheeyehasbeensubjectedto
retinalphotography.
Caution.Thelightemittedfromthisinstrumentis
potentiallyhazardous.Thelongerthedurationofexposure,the
greatertheriskofoculardamage.Exposuretolightfromthis
instrumentwhenoperatedatmaximumintensitywillexceedthe
safetyguidelineafter44minutes.
Figure 1: Relative spectral output of PSL Classic
Quantity MeasuredValue
Group 2 limit
Pass/FailGroup 2
Comments
Eir-cl 54.82mWcm-2 100mWcm-2 Pass -
LA-r 38.0mWsr-1cm-2 10Jcm-2 Pass withexposure
limit
Exposurelimit44minutes
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6. SafetyThefollowingstatementisprovidedforUScustomersandreferencesFDA
SlitLampGuidance.
Becauseprolongedintenselightexposurecandamagetheretina,the
useofthedeviceforocularexaminationshouldnotbeunnecessarily
prolonged,andthebrightnesssettingshouldnotexceedwhatisneeded
toprovideclearvisualizationofthetargetstructures.Thisdevice
shouldbeusedwithfiltersthateliminateUVradiation(<400nm)and,
wheneverpossible,filtersthateliminateshort-wavelengthbluelight
(<420nm).
Theretinalexposuredoseforaphotochemicalhazardisaproductofthe
radianceandtheexposuretime.Ifthevalueofradiancewerereducedin
half,twicethetimewouldbeneededtoreachthemaximum
exposurelimit.
Whilenoacuteopticalradiationhazardshavebeenidentifiedforslit
lamps,itisrecommendedthattheintensityoflightdirectedintothe
patient’seyebelimitedtotheminimumlevelwhichisnecessaryfor
diagnosis.Infants,aphakesandpersonswithdiseasedeyeswillbeat
greaterrisk.Theriskmayalsobeincreasedifthepersonbeingexamined
hashadanyexposurewiththesameinstrumentoranyotherophthalmic
instrumentusingavisiblelightsourceduringtheprevious24hours.This
willapplyparticularlyiftheeyehasbeenexposedtoretinalphotography.
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Onlymanualnon-immersioncleaningasdescribedshould
beusedforthisinstrument.Donotautoclaveorimmersein
cleaningfluids.Alwaysdisconnectpowersupplyfromsource
beforecleaning.
a Wipetheexternalsurfacewithacleanabsorbent,non-
sheddingclothdampenedwithawater/detergentsolution
(2%detergentbyvolume)orwater/isopropylalcohol
solution(70%IPAbyvolume).Avoidopticalsurfaces.
b Ensurethatexcesssolutiondoesnotentertheinstrument.
Usecautiontoensureclothisnotsaturatedwithsolution.
c Surfacesmustbecarefullyhand-driedusingacleannon-
sheddingcloth.
d Safelydisposeofusedcleaningmaterials.
7. Cleaning and disinfection instructions
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Thefollowingambientconditionlimitsarerecommended
fortheKeelerPortableSlitLamp,fortransportandstorage
itisrecommendedthattheSlitLampiskeptinitsoriginal
manufacturerspackaging.
BeforeusetheSlitLampshouldbeallowedtoadjusttothe
ambientroomtemperatureforseveralhours.
Thisisespeciallyimportantwhentheunithasbestored
ortransportedinacoldenvironment;thiscancausesevere
condensationontheopticalelements.
Working environment+10°Cto+35°C
30%to75%relativehumidity
Transport and storage conditionsTransport:-40°Cto+70°C
Storage:-10°Cto+55°C
8. Transport, storage and working conditions
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Observe the following prescriptions in order to ensure safe operation of the instrument
Warning
• Neverusetheinstrumentifvisiblydamagedandperiodically
inspectitforsignsofdamageormisuse.
• Neverusetheinstrumentiftheambienttemperature,
atmosphericpressure,and/orrelativehumidityareoutsidethe
limitsgivenabove.
• Beforeanycleaningoftheinstrumentorthebaseunitensure
thepowerleadisdisconnected.
• Cleanonlytheexteriorsurfacesoftheinstrumentfollowing
theinstructionscontainedinthismanual.
• Thisproductshouldnotbeimmersedinfluid.
• Repairsandmodificationstotheinstrumentmustbemade
onlybythespecializedtechniciansofthemanufacturer’s
TechnicalServiceCentreorbypersonneltrainedand
authorisedbythemanufacturer.Themanufacturerdeclines
anyandallresponsibilityforlossand/ordamagesresulting
fromunauthorisedrepairs;furthermore,anysuchactionswill
invalidatethewarranty.
• Shouldtheinstrumentsuffershocks(forexample,should
itaccidentallyfall),andtheopticalsystemortheillumination
systemaredamageditmaybenecessarytoreturnthe
instrumenttothemanufacturerforrepair.
• Alwayscarefullyobservethesafetyrulesandother
precautionspublishedherein.
• Thisdeviceisintendedtobeusedonlybysuitablytrainedand
authorisedhealthcareprofessionals.
• FederalLawrestrictsthisdevicetosalebyorontheorderofa
physicianorpractitioner.
• Theowneroftheinstrumentisresponsiblefortraining
personnelinitscorrectuse.
• Routepowercordssafelytoeliminateriskoftrippingor
damagetouser.
• Ensuretheinstrumentisplacedonalevelandstablesurface.
• Donotuseinthepresenceofflammablegas/liquid.
• ThebulbmaybehotiftheSlitLamphasbeenincontinuous
use,takecarewhenremovingthebulb.
• Afterremovalofthebulb,donottouchbulbcontactsand
patientsimultaneously.
• OnlyuseapprovedKeelerpowersupply
1941-P-7778orinstrumentmay
malfunction.
9. Warnings and cautions
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Portable Slit Lamp illumination body andmagnification optics1. Trigger Click and hold the trigger to turn the lamp illumination on. Double click (similarly to a computer mouse button) to turn both the illumination lamp and fixation targets on.
2. Prism optical body Projects a thin sheet (slit) of light perpendicular to the prism face.
3. Eyepieces – dioptrical adjustment Rotate clockwise to achieve a + (plus) setting and anti-clockwise for a – (minus) setting.
4. Eyepieces – PD adjustment Rotate the left eyepiece anti-clockwise and the right eyepiece clockwise to increase the PD value. Rotate the left eyepiece clockwise and the right eyepiece anti-clockwise to decrease the PD value.
5. Latex free protective sleeves These sleeves can be folded forwards to better suit spectacle wearers.
6. Fixation targets Provides a light source for the patient to focus upon. Double click (similarly to a computer mouse button) to turn both the illumination lamp and fixation targets on.
7. Objective lenses These lenses are flush with the external surface at a magnification of 10x and protrude from the device at a magnification of 16x.
8. Slit wheel Rotate the slit wheel to select either a slit of 0.15mm (0.15), 0.5mm (0.5), 0.8mm (0.8), 1.6mm (1.6), a circle of 12mm (O), or a square of 1mm ( ) for a/c flare assessment. (The text in the brackets corresponds to the icons on the slit wheel.)
9. Filter wheel Rotate the filter wheel to select either a red free (R.F), blue (B.F), neutral density (N.D) or clear filter (O). (The text in the brackets corresponds to the icons on the filter wheel.)
10. Names of controls and components
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Portable Slit Lamp illumination body and magnification optics10. Magnification change lever Push this lever to the right to set the magnification at 10x and to the left to set the magnification at 16x.
11. Alternative power socket In addition to charging through the base charger unit, the device can also be charged through this socket.
12. Charging LED The yellow charging LED is on continuously during normal charging and blinks when trickle charging. Trickle charging can occur at the start of charging a completely discharged battery or when attempting to charge a completely charged battery.
13. Battery state LED The yellow battery state LED blinks when the battery is almost empty.
14. Brightness adjustment wheel Rotating this wheel clockwise increases the brightness of the illumination lamp. Rotating this wheel anti-clockwise decreases the brightness of the illumination lamp.
Portable Slit Lamp base charger unit15. Power socket for Keeler 12V Power Supply Connect the power supply cable to this socket and the place the slit lamp body in the charger unit to charge the device.
16. Recharging connection pins Connects the slit lamp body to the charger unit to charge the device.
17. Recess for slit lamp body Place the slit lamp body in the charger unit when not in use.
18. Grooves for power cable Place the power supply cable in the most suitable groove to keep the unit tidy.
19. Protective rubber feet Ensures the surface onto which the charger unit is placed does not become scratched.
20. Charging safety feature Note: No electrical power is conducted through the pins (16) until the slit lamp body is placed into the recess of the charger unit.
10. Names of controls and components
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Portable Slit Lamp illumination body and magnification optics
Push this lever to the right to set the magnification at 10x and to the left to set the magnification at 16x.
In addition to charging through the base charger unit, the device can also be charged through this socket.
The yellow charging LED is on continuously during normal charging and blinks when trickle charging. Trickle charging can occur at the start of charging a completely discharged battery or when attempting
Rotating this wheel clockwise increases the brightness of the illumination lamp. Rotating
10. Names of controls and components
10
14
13
11 1216
17
19
18
15
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11. Instructions for use
Preparing the power supply and the base unit1.Attachtheappropriatemainsplugadaptertothetransformer
afterremovingtheblankingplateorifrequireduseanIEC
60320type7connector(notsupplied).
2.Connecttheoutputpowersupplycabletothesocketonthe
undersideoftherechargingbaseunit.
3.PlacethePortableSlitLamponthebasechargerunit,
theyellowLEDwillilluminatetoindicatetheunitisbeing
charged.Fromfullydischargedtofullychargedusuallytakes
2.5hours.
Illumination ‘on time’ 50minutes
(whenusedatfullintensityfromfullycharged)
IEC 60320 TYPE 7 connector
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11. Instructions for use
Preparing the Portable Slit Lamp prior to use1. SetthePupillarydistanceoftheeyepiecesbyfirmlygrasping
themandadjustingthedistancebygentlyrotatingtheprism
bodiesinwardsoroutwardsuntilafullcircularimageisseen
binocularly.
2.Adjustthedioptricpowerofeachof
theeyepieces,oneatatime.Adjust
theeyepiecetoit’shighest+(plus)
settingandlookingthroughthe
opticsattheperipheralfocusmarker,
slowlyadjusttheeyepiecetowards
the–(minus)settinguntilthefocus
markerissharplyinfocus.Repeat
thisfortheothereyepiece.
Note – Spectacle wearers may prefer to fold the rubber eye cup
forwards.
3.Setthemagnificationtoeitherx10orx16usingthe
magnificationchangelever.
4.Selectyourpreferredslitwidthandfilterbyrotatingtheslit
andthefilterwheels.
5.Tosettheslitatananglerotatetheilluminationtowerabout
itspivotaxis.
6.Holdingtheslitlampfirmlyclickandholdthetriggertoturn
ontheilluminationlamp.Doubleclickandholdthetriggerto
turnonboththeilluminationlampandfixationtargets.The
lampdoesnotruncontinuously,afteradurationof2minutes
itautomaticallyswitchesoff.
Note – for very small or young patients,
babies in arms and some animals,
sometimes it may be preferable to use
the Portable Slit Lamp inverted –
see illustration.
Note – it can be beneficial to
stabilize the Slit Lamp using the
technique shown in the
illustration below.
Peripheralfocus marker
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11. Instructions for usePreparing the patientThepatientshouldbeascomfortableaspossibleandpositioned
toalloweasyaccesstotheeyetobeexamined.
TheKeelerportableSlitLampisdesignedtobeambidextrous,
holdtheSlitLampinyourpreferredhandsimultaneously
squeezingthetriggeron/offswitch.
Toimprovestability,especiallyathighermagnificationsyoumay
liketouseyourotherhandasa‘bridge’betweentheSlitLamp
bodyandthepatient.
AswithotherSlitLampexaminationproceduresitmaybe
necessarytoelevatethepatient’slid.
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12. Problem solving
Problem Solution
Noillumination,
orlow
illumination
Checktheunitisfullycharged
Checkthepositionofthefiltersand
slitstoensuretheyaresetcorrectly
Checkandifnecessarychange
thebulb
Slitslantedatan
angle
Checkthepositionoftheslitdisc,it
maynotbelocatedcorrectlyataslit
position
Circleincomplete
oroffset
Checkthepositionoftheslitand
filterdiscs,itmaynotbelocated
correctlyataslitposition
PoorfocusCheckthedioptricsettingsofthe
eyepieces
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13. Changing the bulb WarningthebulbmaybehotiftheSlitLamphasbeen
incontinuoususe,takecarewhenremovingthebulb.
Thebulbhasalonglifeexpectancyofapproximately2,000hours.
Makesurethepowerisdisconnectedbeforechangingthebulb.
Tochangethebulb,firstallow5minutesforittocooldownif
theSlitLamphasbeeninuse.
This is how you change a bulb1. Unscrewtheblackplasticbulbcoverbyturning
anti-clockwise.
2.Removetheoldbulb,allow5minutesforittocool
downiftheSlitLamphasbeeninuse.
3.Insertthenewbulb,ensuringthe
notchisfacingupwardsasshown.
1
2
3
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Regularlyinspectthedevicefordamageordirt.
Caremustbetakentokeeptheobjectiveandtheeyepiecelenses
clean–useonlysoftcleanlensclothstocleanopticalsurfaces.
Routinelycleanaspersection7.Cleaninginstructions.
Themanufacturerdeclinesanyandallresponsibilityand
warrantycoverageshouldtheinstrumentbetamperedwith
inanymannerorshouldroutinemaintenancebeomitted
orperformedinmannersnotinaccordancewiththese
manufacturer’sinstructions.
Caution
KeelerSlitLampsshouldbecleanedandservicedregularly.
AnyservicingorrepairsshouldonlybecarriedoutbyKeelerLtd.
orbysuitablytrainedandauthoriseddistributors.
Therearenouserserviceablepartsinthisinstrument.Service
manualswillbeavailabletoauthorisedKeelerservicecentresand
Keelertrainedservicepersonnel.
14. Routine instrument maintenance
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15. Specifications and electrical ratings
Guidance and manufacturer’s declaration – electromagnetic immunity
TheKeelerPortableSlitLampisintendedforuseintheelectromagneticenvironmentspecifiedbelow.Thecustomerorusershouldassurethatitisusedinsuchanenvironment.
Immunity test IEC 60601 Test level Compliance level Electromagnetic environment - guidance
Electrostaticdischarge(ESD).IEC6100-4-2
±6kVcontact
±8kVair
±6kVcontact
±8kVair
Floorsshouldbewood,concreteorceramictile.Iffloorsarecoveredwithsyntheticmaterial,therelativehumidityshouldbeatleast30%.
Electricalfasttransient/burst.IEC61000-4-4
±2kVforpowersupplylines±1kVforpowersupplylines
±2kVforpowersupplylines±1kVforinput/outputlines
Mainspowerqualityshouldbethatofatypicalcommercialorhospitalenvironment.
Surge.IEC61000-4-5
±1kVline(s)toline(s)±1kVline(s)forinput/outputline(s)
±1kVline(s)toline(s)±1kVline(s)forinput/outputline(s)
Mainspowerqualityshouldbethatofatypicalcommercialorhospitalenvironment.
Voltagedips,shortinterruptionsandvoltagevariationsonpowersupplyinputlines.IEC61000-4-11
<5%UT(>95%dipinUT)
40%UT
(60%dipinUT)for5cycles
70%UT(30%dipinUT)for25cycles
<5%UT
(>95%dipinUT)for5s
<5%UT(>95%dipinUT)
40%UT
(60%dipinUT)for5cycles
70%UT
(30%dipinUT)for25cycles
<5%UT
(>95%dipinUT)for5s
Mainspowerqualityshouldbethatofatypicalcommercialorhospitalenvironment.IftheuseroftheKeelerPortableSlitLamprequirescontinuedoperationduringpowermainsinterruptions,itisrecommendedthattheinstrumentbepoweredfromanuninterruptiblepowersupply.
Powerfrequency(50/60Hz)magneticfield.IEC61000-4-8
3A/m 3A/m Powerfrequencymagneticfieldsshouldbeatalevelcharacteristicofatypicallocationinatypicalcommercialorhospitalenvironment.
NoteUTisthea.c.mainsvoltagepriortoapplicationofthetestlevel.
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TheKeelerPortableSlitLampisamedicalelectricalinstrument.Theinstrumentrequiresspecialcareconcerning
electromagneticcompatibility(EMC).ThisSectiondescribesitssuitabilityintermsofelectromagneticcompatibilityof
thisinstrument.Wheninstallingorusingthisinstrument,pleasereadcarefullyandobservewhatisdescribedhere.
1.Portableormobile-typeradiofrequencycommunicationunitsmayhaveanadverseeffectonthis
instrument,resultinginmalfunctioning.
15. Specifications and electrical ratings
Guidance and manufacturer’s declaration – electromagnetic emissions
TheKeelerPortableSlitLampisintendedforuseintheelectromagneticenvironmentspecifiedbelow.Thecustomerorusershouldassurethatitisusedinsuchanenvironment.
Emissions test Compliance Electromagnetic environment - guidance
RFemissionsCISPR11
Group1 TheKeelerPortableSlitLampusesRFenergyonlyforitsinternalfunction.Therefore,itsRFemissionsareverylowandarenotlikelytocauseanyinterferenceinnearbyelectronicequipment.
RFemissionsCISPR11
ClassA TheKeelerPortableSlitLampissuitableforuseinallestablishmentsotherthandomesticandthosedirectlyconnectedtothepubliclow-voltagepowersupplynetworkthatsuppliesbuildingsusedfordomesticpurposes.
HarmonicemissionsIEC61000-3-2
ClassA
Voltagefluctuations/flickeremissionsIEC61000-3-3
Complies
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15. Specifications and electrical ratings
Guidance and manufacturer’s declaration – electromagnetic immunity
TheKeelerPortableSlitLampisintendedforuseintheelectromagneticenvironmentspecifiedbelow.Thecustomerorusershouldassurethatitisusedinsuchanenvironment.
Immunity test IEC 60601 Test level Compliance level Electromagnetic environment - guidance
ConductedRFIEC61000-4-6
RadiatedRFIEC61000-4-3
3Vrms
3V/m
80MHzto2.5GHz
3V
3V/m
PortableandmobileRFcommunicationsequipmentshouldbeusednoclosertoanypartoftheKeelerPortableSlitLamp,includingcables,thantherecommendedseparationdistancescalculatedfromtheequationapplicabletothefrequencyofthetransmitter.
Recommended separation distanced=1.2√p
d=1.2√p80MHzto800MHz
d=2.3√p800MHzto2.5GHz
Wherepisthemaximumoutputpowerratingofthetransmitterinwatts(W)accordingtothetransmittermanufactureranddistherecommendedseparationdistanceinmetres(m).
FieldstrengthsfromfixedRFtransmitters,asdeterminedbyanelectromagneticsitesurvey¹,shouldbelessthanthecompliancelevelineachfrequencyrange.²
Interferencemayoccurinthevicinityofequipmentmarkedwiththefollowingsymbol:
Note 1 At80MHzand800MHz,thehigherfrequencyrangeapplies.Note 2 Theseguidelinesmaynotapplyinallsituations.Electromagneticpropagationisaffectedbyabsorptionandreflectionfromstructures, objectsandpeople.¹ Fieldstrengthsfromfixedtransmitters,suchasbasestations(cellular/cordless)telephonesandlandmobileradios,amateurradio,AMand FMradiobroadcastandTVbroadcastcannotbepredictedtheoreticallywithaccuracy.ToassesstheelectromagneticenvironmentduetofixedRF transmitters,anelectromagneticsitesurveyshouldbeconsidered.IfthemeasuredfieldstrengthinthelocationinwhichtheKeelerPortableSlit LampisusedexceedstheapplicableRFcompliancelevelabove,theKeelerPortableSlitLampshouldbeobservedtoverifynormaloperation.If abnormalperformanceisobserved,additionalmeasuresmaybenecessary,suchasre-orientatingorrelocatingtheKeelerPortableSlitLamp.² Overthefrequencyrange150kHzto80MHz,fieldstrengthsshouldbelessthan3V/m.
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15. Specifications and electrical ratings
Recommended separation distances between portable and mobile RF communications equipment and the Keeler Portable Slit Lamp
TheKeelerPortableSlitLampisintendedfortheuseinanelectromagneticenvironmentinwhichradiatedRFdisturbancesarecontrolled.ThecustomerortheuseroftheKeelerPortableSlitLampcanhelppreventelectromagneticinterferencebymaintainingaminimumdistancebetweenportableandmobileRFcommunicationsequipment(transmitters)andtheKeelerPortableSlitLampasrecommendedbelow,accordingtothemaximumoutputpowerofthecommunicationsequipment.
Rated maximum output power of
transmitterW
Separation distance according to frequency of transmitterm
50kHzto80MHz
d=1.2√p
80MHzto800MHz
d=1.2√p
800MHzto2.5GHz
d=2.3√p
0.01 0.12 0.12 0.23
0.01 0.37 0.37 0.74
1 1.2 1.2 2.3
10 3.7 3.7 7.4
100 12 12 23
Fortransmittersratedatamaximumoutputpowernotlistedabove,therecommendedseparationdistancedinmetres(m)canbedeterminedusingtheequationapplicabletothefrequencyofthetransmitter,wherepisthemaximumoutputpowerratingofthetransmitterinwatts(W)accordingtothetransmittermanufacturer.
Note 1 At80MHzand800MHz,theseparationdistanceforthehigherfrequencyapplies.Note 2 Theseguidelinesmaynotapplyinallsituations.Electromagneticpropagationisaffectedbyabsorptionandreflectionfromstructures,objects andpeople.
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16. Technical specifications
BiomicroscopeType BinocularHandheldBiomicroscopeSlitLamp
Optics Convergingbinocularsat13˚
Magnification 10xand16x,leverchange
Objective lens working distance @ 10x 100mm
Objective lens working distance @ 16x 80mm
Field of view @ 10x 16mm
Field of view @ 16x 10.5mm
PD range 50mmto72mm
Eyepiece dioptric adjustment range +/-7Dioptres
Size: Hand held device 238x116x210mm
Docking station 205x138x40mm
Weight: Hand held device ~900g
Docking station 300g
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16. Technical specifications
Slit and filter systemSlit type RotatingSlitwheelselectionSlitLamp
Slit length 12mm
Slit widths 0.15mm,0.5mm,0.8mmand1.6mmslits,12mmcircleanda1mmsquare
Filters Redfree,Blue,Neutraldensity0.8andClear
IR protection InbuiltIRcutfilter
Slit angle +/-60˚
Illumination control Continuouslyvariablefromlowtofullbrightness
Power supplyPower supply unit Switchmode,(110V–240V)+/-10%multiplugcompliantto EN60601-1EN61000-6-2,EN61000-6-3
Power supply output 30VA(12VDC2.5A)
Complies with ElectricalSafety(Medical)BSEN60601-1:2006 ElectromagneticcompatibilityEN60601-1-2:2007 Ophthalmicinstruments-Fundamentalrequirementsandtestmethods ISO15004-1:2006 Ophthalmicinstruments-OpticalradiationhazardISO15004-2:2007
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17. AccessoriesAccessories Aluminium Carry Case Part Number 3010-P-7000
Test Bar Part Number EP39-70737
Power Supply Part Number 1941-P-7778
2x Rubber Eye Caps Part Number 3010-P-7004
ConsumablesSlit Lamp 6V 15W Bulb Part Number 1030-P-7187
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18. Contact, packaging and disposal Information
ManufacturerKeeler Limited Clewer Hill RoadWindsorBerkshireSL4 4AA
Freephone: 0800 521251Tel: +44 (0) 1753 857177Fax: +44 (0) 1753 827145
USA Sales OfficeKeeler USA456 ParkwayBroomallPA 19008USA
Toll Free: 1 800 523 5620Tel: 1 610 353 4350Fax: 1 610 353 7814
3010-P-7001IssueG
Disposal of old Electrical and Electronic Equipment (ApplicableintheEuropeanUnionandotherEuropeanCountrieswith
separateCollectionSystems).
ThisSymbolontheProductoronitsPackagingandinstructions
indicatesthatitwasputonthemarketplaceafterAugust2005and
thatthisproductshallnotbetreatedasHouseholdWaste.
ToReducetheEnvironmentalimpactofWEEE(WasteElectricalElectronic
Equipment)andminimisethevolumeofWEEEenteringlandfillswe
encourageatProductendoflifethatthisEquipmentisrecycledandreused.
If you need more information on the collection reuse and recycling then
please contact B2B Compliance on 01691 676124 (+44 1691 676124).