Christie CDXL-45 Bedienungsanleitung

Christie Projektorzubehör CDXL-45

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Christie Xenolite® lamps

and Christie Solaria™

Series projectors

Usage best practices

How to calculate the amount of light required

The basic formula to calculate this theoretical light requirement is:

Lumens (L) = Average Screen Brightness desired (average fL)

X Screen Area (sq ft)

• Givenagoodlightdistribution,the“AverageScreenBrightness”

canbeestimatedbymultiplyingthecenterbrightnessdesiredby

0.95.Generallyacceptedpracticeforthetargetcenterbrightness

is:14fLfor2Dand4.5fLfor3D(lightmeasurementtakenthrough

3Dglasses).

Afteryouhavethe“Lumens”numberyouwoulddivideitbyall

signicantsystemefciencies.Someexampleswouldbe:

•

Screen gain: 1.0 to 2.4.  Silver screens are   a 2.4. This is very important

partofthisequationandcareshouldbetakentomakesurethis

numberisaccurate.Ifthescreeninquestionisnot  new then the

overall gain should be   measuredproperly. Any degradation  

ordebrisonthescreenwillreducethescreengain.

• Port window efciency: 96%   efciency is typical for good  port glass.

• LossduetocolorcorrectionrequiredformeetingDCIcolor

specications:97%efciencyistypical.

• 3Dsystemlightefciency:thisnumbercanbeanywhere

from10%to30%efciencydependingonthe3Dsystemused.

• Othereffectslikedownangleandscreencurvedomakea

differenceforlightdistributionbuttheyonlyeffectthese

calculationsifthey excessive.are

 Calculation:Lumens Required (L) = Lumens (L) / (Screen Gain X Port

Window Efﬁciency X Color Correction Efﬁciency X 3D Efﬁciency)

 Theresulting“LumensRequired”numberyougetwouldbethe

“MINIMUMlumenrequirement”tomeetthedesiredlightlevels.

How to select the right projector/lamp combination

that will provide enough light to satisfy screen

brightness requirements

Thereshouldbeenoughbrightnessavailableevenattheendof

thelamp’slifetomeetyourspeciedcenterbrightnessrequirement.

Yourcompany’slampchangingpolicymayneedtobereviewedto

makethisdecision.

Thereisanaturalbrightnessdrop-offthatoccurswithanyXenonlamp

duringitslife.Thisbrightnesscurveistypicallysharpatthebeginning

ofthelamp’slifeanddropsslowerafterthisinitialperiod.Leaving

thelampat100%powerthroughoutitslifewouldgivethistypical

brightnesscurve:

Lamp life

Starting lamp at 100% power

Maintaining lamp at 100% power

Point at which

brightness is

unacceptable

Approximately

50% brightness

100% Rated

brightness

(lamp/projector

combination)

Brightness

Thisinitialdrop-offinbrightnessismainlyduetothere-shapingofthe

electrodesinsidethelamp.The betweentheelectrodesinsidethearc

lampwillmoveslightlyduringthisperiod.Re-aligningthelampoften

canminimizethisdrop-off.Thisre-alignmentshouldbedoneatleast

everytimetheequipmentisserviced.Themorefrequentthisisdone,

themorelightefciencycanbepreserved.

100%Ratedbrightnesswouldindicatetheuseofanewlamprunning

at100%power.

USAGE BEST RACTICES P

Optimize your Christie

digital cinema system

Christie Xenolite ®     lamps can produce remarkable brightness

and color consistency with excellent resistance to icker,       

ignition difculty and explosion. With this superior performance       

comes great economy. Here some usage guidelines    are   

that can be applied to get optimum performance from the         

Christie Xenolite lamp and Christie Solaria     ™  Series projector

combination. If you need technical support to help you        

with this, please do not hesitate to contact Christie        

technical support.

 ItisNOTrecommendedtorunalampinthisway.Ifthisisdonethen

thebrightnesslevelwillnotbemaintainedforverylongandthelamp

lifewillbereduced.

 ThischartdescribestherecommendedoperationofanyXenonlamp.

 Understandingthisbrightnesscurvewillhelpwhendecidingwhich

projectorandlamptouse.Itisimportanttoselectalampthatcan

producetherequiredbrightnessattheendofitslife.

Hereishowthisisestimated:

• Selectalampforanexamplefromthe“LampBrochure”and

reduceitsmaximumlumenvaluebyabout25%asastartingpoint.

Thiswouldbeanestimateofthebrightnessthatthelampcan

achieveatorneartheENDofitslifeatthestatedwarranty.For

higherwattagelampsthisvaluewouldbemorelike30%or35%.

Ifyouintendonrunningthelamplongerthanthestatedwarranty

thenyouwouldincreasethispercentage.Callthisresultinglumen

valuethe“maximumagedbrightness.”

• Takethe“minimumlumensrequired”numberandselectthelamp/

projectorcombinationthatcancoverthiswithits“maximumaged

brightness”value.Itisbesttobeconservativewiththisselectionto

makesuretherequiredbrightnesscanbereached.

How to preserve lamp life with the proper projector

operating environment

Properoperatingenvironmentconditionswillpreservelamplife.

 Roomtemperature:Comfortableroomtemperatureisusually

acceptable.Between50°Fand95°F(10°C–35°C).

 Roomhumidity(noncondensing):20%to80%.

 Externalexhaustextraction:Usethe“LampBrochure”tondthe

properairowinCFMthatisrequired:

• Makesurethisairowismaintainedanytimetheprojectorison.

Addthismeasurementtoallroutineservicevisits.

• Makesurethattheairductsystemhasadamperfeaturewhich

closes totheoutsideairwhenthesystemispowereddown.off

Thiswillpreventdirtymoistairfrombeingpulledbackdown

intotheprojectorwhenthesystemisoff.

How to ensure proper lamp house electrical connections

to the lamp

Xenonlampsoperateatveryhighcurrentoramperagelevels.Because

ofthis,anyelectricalconnections verycritical.Wheninstallingalampare

makesuretheseconnections tightandsecure.are

 Alooseorbadconnectioncancausetheconnectortoburnwhichin

turnwilleitherbreaktheelectricalconnectionoroverheattheendof

thelampcausingthesealinsidethelampendtofail.Thiswillresultin

alampthatwillnotignite.

 Donotuseanyconnectorsthat discoloredorburnt.Replaceanyare

discoloredconnectorsbeforeinstallinganewlamp.



Inspect both end  connectors for discoloration  at every routine service visit.   



Lamps exhibiting burnt or   discoloredends not covered under warranty. are   

How to determine average expected life

In the “Lamp Brochure” you will nd an “Estimated average expected life”           

number for each lamp/projector combination.   



This number is  a  guideline to help you determine how   longaparticular

lamp can be operated   under optimal conditions  as described here. 



If the operating situation   is not optimal  then shortera lamp life 

can be expected. 



Non-optimal conditions would include:  

• Startingthelampoutnearorabove100%powerandrunning

itthiswaythroughoutitslife.

• Notprovidingadequateairextraction.

• Pooroperatingenvironment.

• Changingthepowerleveldrasticallyupandthenbackto

accommodatetwodifferentlightlevelrequirementssuch

as2Dthen3D.

Christie Xenolite® Lamp Champion Warranty

ChristieXenolite®lamps ofveryhighqualityandanyfailureisunlikely.are

Ifalamphasfailedforsomereasonthenaservicetechnicianshouldcheck

thesystemandoperatingpracticestomakesurethatthelampisbeing

usedproperly.AllChristieXenolitelamps coveredunderwarrantyare

againstanymanufacturerdefects.Theperiodoftimeisbasedonthe

warrantyhoursofoperationgiveninthe“LampBrochure”andaperiod

ofoneyearfrominvoicedatewhichevercomesrst.



Ifa     warranty claim is required then prompt   taken.action must be

A          “Xenolite Lamp Warranty Claim Form” must be lled out completely

and the on the  submitted, following  instructions     form. These forms

are        in the lamp box or they can be obtainedby   contacting the Christie

ofce your  located in region. information on the   Please see contact   

back  of this guide.

 Iftherequestisunusualanditissuspectedthatthelampdidnot

causethefailurethenChristiewillcontactthepersonmakingtheclaim

toverifytheoperatingconditions.Thisistohelppreventrepeating

failurescausedbysomethingotherthanthelamp.

USAGE BEST RACTICES P

Desi d lamp lifere

Lamp power and brightness over time

Optimal conditions

Brightness

Power

Acceptable brightness range Brightness is unacceptable

75%

95% 100%

90%

85%

Produktspezifikationen

Marke:	Christie
Kategorie:	Projektorzubehör
Modell:	CDXL-45

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