Acute 12 / 24 Flash Unit User manual

CONTENTS
Nomenclaturegenerator. .
Nomenclatureflashheads     ..... .5
Briefmanual                   ....6
Voltageselection           .....6
Mains(AC)connection.    ....6
Charging...                 ......7
Modellinglamp            .......7
Thereadylamp/TestButton. . . . . . . . . .7
Synchronisation          ......8
Photocell                  .......8
Acousticsignal            .......8
Recyclingtimeadjustment.     .....8
Flashheads                 .....9
Flashtube
Colourtemperature                 . . .10
EnergyDistribution.        ..11
Energycontroland"Bracketing".....12
Automaticsafetyfunction. r i..     ..13
Warranty..                 ......13
Technicaldata                 ...14

NOMENCLATU R E, G EN ERATOR



Recyclingswitch
Recyclingtime adjustment
Energyswitch(groupA)
Modellinglightswitch
Voltageselector
 Isolate/Comb ine switch
Acousticsignalswitch
Energyswitch(groupB)
Readylamp/test
Syncinput
Photocell
Energycontrol"Bracketing"





Flashheadconnection(groupA)
Mainsconnection
Flashheadconnection(groupB)

NOMENCLATURE FLASHH EADS



       Acute (PA)flash head
       Flashtube
       Modellinglamp100WE27
       Umbrellareceptacle





       Acute (AB) flash head (fan cooled)
        Voltageselector(forfan)
       Manoeuvresystemwith lockinglever
       Standadapter16mm(5/8")





        Frostedglasscover
       HalogenmodellinglamP150WE27
       GlassretainercliP

BRIEFMANUAL

      Checkthatthe voltageselector,on generatorand flashhead,
         is compatiblewiththe mainssupplyvoltage
    o Checkthatthe modellinglamphasthe correctvoltage
    o  Connectflashhead/s
    o  Connectthe mainssupplycable
    o Chooserecyclingtime
    o  Switchon charging(FLASHON)
    o  Switchon modellinglight(MODON)
    o Chooseenergydistribution
    o  Pressthe readylamp/testbuttonfor f lash
    o  Connectsynccable

VOLTAGESELECTION

    Thereare two voltagerangesto choose
   between:90-130V60Hzor 180-260V50Hz
    Beforemainsconnectionmakesurethatthe
    voltageselectormatchesthe mainssupply
    voltageon generatorand flashheads.
   Checkalsothatthe modellinglamphasthe
    correctvoltage.

MAINS(AC)CONNECTTON
   The generatoris designedforAC connection
    only.lt can be connectedto the mostcommon
   mainsvoltages:90-130V60Hzor 180-260V
    50H2.Beforemainsconnectionmakequrethat
    the voltageselectorsmatchthe mainssupply
    voltage.
   Connectthe unitto the mainswiththe cable
    includedin the delivery.
   WARNING!
    Never use ordinary household extensioncords
     to extendthe power cable.Theymay overheat.
    Contactyour Profoto distributorfor proper
    equipment.

CHARGING

Checkthat the voltageselectorsmatchthe
mainssupplyvoltage.Turnon the mainswitch
(FLASHON).
The recyclingtime is very short.Variationswill
occurdependingon the selectedflashenergy
and voltage.Theshortestrecyclingtime is
obtainedwith lowflashenergy

              MODELLINGLAMP

The modellinglampcan be turnedon/offby the
switchon generator(MODON).In the off posi-
tionthe fan,in the flashhead,is alsoturnedoff.
The modellinglampis powereddirectlyfromthe
mains.lt is thereforeimportantto checkthatthe
ratedvoltagefor the lampcorrespondswiththe
mainssupply.A100Wattmediumscrewbase
lamp(E27)is includedin standarddeliveries.
The AB flashheadcan also be fittedwith a
Halogen150-250Wattmediumscrewbase
lamp(E27).
Theflashtubeand the modellinglampcan be
 enclosedin a f rostedglasscoverfor a closer
 matchingof modellinglightandflashillumi-
 nation.
 NOTE!
ALWAYSIJNPLLJGTHELAMP CABLE FROM
 THE GENERATORBEFORE CHANGING
 MODELLINGLAMP OR FLASHTUBE.

        READYLAMP/TESTBUTTON
 The readyl"Tp buttonhastwo functions.First,it
 lightsup whenthe unitis fullyrecycled.Second,
  it can be used'tomanuallysyncthe unit(open
  f lash).Whena lowerenergysettingis chosen,
 withthe "Bracketing"selector,releasea flashso
 thatthe unitcan recycleforthe newenergy
 setting

SYNCHRONIZATION

    Synchroniseby connectingthe synchrocable
        f romthe camerato the synchroinput.when the
    synchrocableis connectedthe built-inphotocell
     willbe disabled.



PHOTOCELL

    The photocellon the generatorpanelservesas a
    slavesyncwhenanotherflashappears.Whena
    synchrocableis usedthe photocellis automati-
     callydisabled



ACOUSTICSIGNAL

   The unitsacousticsignalsystem"beeps"when
    the unithasfullyrecy'cled.lf the signalisn't
    wanted,pressthe buttonmarked"sound".




RECYCLINGTIME ADJ USTMENT

    with the recyclingadjustmentdialthe recycling
    timecan be lengthenedgraduallyto help
    preserveweakfusesor heavilyloadedmains
    supply.

FLASHHEADS

Acute(AB and ABS)flashhead
The AB/ABSflashheadis fan-cooled.Make
surethatthe voltageselectormatchesthe mains
supplyvoltage.Checkalsothatthe modelling
lamphas the correctvoltage.
The AB flashheadis deliveredwiththe Disc
reflectorintendedfor usewithan umbrella.
When moreadvancedlightingis desired,we
recommendthe use of any of Profotosmany
accessoriesand reflectorsall easilyattached
directlyontothe head.

The PAflashheadis convection-cooled,i.e.
withoutfancooling,whichputsa limiton the
numberof flashesthatthe lampheadcan emit
withoutoverheating.Themaximumoutputis
4800Wsper minutewhichis to a2400Wsflash
every30 secondsor 1200Wsflashevery15
seconds,or 600Wsflashevery8 seconds,or
300Wsevery4 seconds,and so on.

The modellinglampincludedin the deliveryis a
100Wattmediumscrewbaselamp(E27).The
AB headcan alsobe fittedwitha Halogen150-
zSOWattmediumscrewbaselamp(E27).The
flashtubeandthe modellinglampcan be
enclosedin a f rostedglasscoverfor a closer
matchingof modellinglightandflash
 illumination.
The ABS flashheadis deliveredwiththe Zoom
 reflector,Halogenmodellinglampl50Wattand
 frostedglasscover.

FLASHTUBE

    A UV-coatedQuartzflashtube is includedin
     standardPAand AB/ABSflashheaddeliveries.
    The flashtubehastwo metalpinsfor insertion
     intothe unit.When removinga flashtube,pullit
     straightout of the sockets.When insertinga flash
     tube,checkthatthe trigger-wireconnection
     claspsproperlyaroundthe flashtube.
    NOTE!
   ALWAYSUNPLUGTHELAMP CABLEFROM
    THE GEN ERATORBEFORE CHANGING
    MODELLINGLAMP OR FLASHTUBE.


COLOURTEMPERATURE

    A f rostedglasscoveris includedin AB Special
    (ABS)flashheaddeliveries.lt gives,
      in combinationwiththe UV-coatedflashtube,
    a recommendedcolourtemperaturefordaylight
     typefilm.                    a
     Distinctivecolour temperature adjustmentscan
    be obtainedby combiningflashtubesand/or
     glasscoverswithdifferentcoatings.





                                1 0

a
ENERGYCONTROL
    Withthe "bracketing"selectorthetotalenergy
    can,irrespectiveof the energydistribution,be
    reducedby 50%(1/1 to 112 -one f/stop)in 114ot
   one f/stop.
''BRACKETING''

   Turnthe "bracketing"selectortothe middledot.
    Findthe rightf/stopwiththe flashmeter.Make
    the firstexposure.
   Turnthe selectorto1/1energy.TheLightpower
    increasesto a 1 12stopoverexposure.Makethe
   secondexposure.
   Turnthe selectorto112energy.Pressthe test
    button.Afterrecyclingthe lightpoweris
   decreasedto a 112'flstopunderexposure.
   Now makethe thirdexposure.
   This resultsin threedifferentexposures.One is
    "correct",one is overexposedby a1l2flstopand
   one is underexposedbya1l2flstop.Therehave
   beenthreedifferentexposureswithoutany
   changein lightingor depthof f ield.
       lt is of coursepossibleto chooseonlya ll4tlstop
    "bracketing".111energyto 112energyis one
    f/stopand betweendots is a 114ot onef/stop.





                               1 2

t
                       AUTOMATICSAFETYFUNCTION
                               Thefirstchargingcycle,afterthemainsswitch
                           has beenturnedon, is alwaysin a slowstep
                        mode (opencharging)to allowthe statusof the
                                capacitorsto be gauged.lf the capacitorshave
                            developedhighleakagecurrent,whichhappens
                                                        if the flashunithas not beenusedfor a while,the
                             chargingwillbe aborted.lfthisoccurs,turnthe
                              chargingoff,setthe "BRACKET"to 112and wait
                             about30 secondsbeforeturningit on again.
                           Repeatthisa fewtimes,and increasethe#
 t                            charged,"BRACKET"takesetting.the unitlftothequalifiedgeneratorrepairstillisn'tfully
                             personnelfor service.
                                                        lf the unitis underintensiveusewithfrequent
                               flashingfora longperiodof time,the recycling
                                        willstopcompletely.Thisis to preventthe unit
                             fromoverheating.

                                   WARRANTY
                                       All Profotoproductsare guaranteedfora period
                                    of 2 years,with the exceptionof flashtubes and
                             modellinglamps.
I
. *





                              13
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