
Programming with a Märklin* Central Unit
IfthesoundmoduleisattachedtoanUhlenbrocklocomotivedecoder,allCV'scanbeprogrammed
withaMärklin*CentralUnit,althoughtheycannotbereadback.
1.Turn the Central Unit off, and then on.
2.Enter the decoder address and then turn its light "on" (normally by pressing the [function]-key).
3.Turnthecontrolknoballthewaytotheleft(directionchangeposition)andholditthereforapprox.
10 sec., until the locomotive light turns off.
4.Releasethecontrolknob.Therearlightwillnowashslowly4times.
5.EnterthenumberoftheCVtobeprogrammed(asifyouwereenteringalocomotiveaddress).
6.Turnthecontrolknoballthewaytotheleftbriey.Nowtherearlightwillash4timesquickly.
7.EnterthedesiredvalueforCV.
8.Turnthecontrolknoballthewaytotheleftbriey.Nowtherearlightwillash4timesslowly.
IfadditionalCV'saretobeprogrammed,repeatsteps5-8.Tostopprogramming,press"STOP"on
theCentralUnitorenter"80"astheCVnumberandturnthecontrolknoballthewaytotheleftbriey.
SinceprogrammingwithaMärklin*CentralUnitonlyallowsinputvaluesof01to80,thevalue"0"
must be entered as the value of "80".
Using the page-register to access CV addresses greater than 79
CV-addressesgreaterthan79canonlybeaccessedbythepage-register.ThisisCV66.Ifavalueother
thanzeroisprogrammedinthisCV,thenthatvalue,times64,willbeaddedtotheCVaddressspecied
byallsubsequentwrites.ThevaluewrittenintoCV66mustbeinrange0through64.
ThePageregister(CV65)isautomaticallysettothevaluezerouponleavingtheMotorola**program-
ming mode.
Programming
TheCongurationVariables(CV's)formthebasisforcontrollingandselectingallpossiblefeaturesand
functions of the decoder in accordance with the DCC standard. The sound module is connected to a
loco decoder and could be programmed by those methodes which are provided by the loco decoder. In
the case of an Uhlenbrock loco decoder the sound module can be programmed with the Intellibox, DCC
CommandStationsandMärklin*CentralUnits.
Programming with the PIKO Digi-Power-Box or other DCC devices
Use the programming menu of your DCC Command Station (or throttle) to select and program decoder
CV'sbyregister,directorPageProgrammingmode.SomeCommandStations/throttlesalsosupport
the so called "main track programming" (also known as "operations mode programming"). Please refer
totheoperatingmanualofyourdeviceforspecicinstructions.
The individual sounds can be switched on and off using special function keys on your digital Command
Station/Throttle. The allocation (or mapping) of the various sounds to individual special function keys
canbemodiedusingCV's903-915.Decodersaredeliveredwithsoundsinitiallyallocatedasindicated
in the above table.
Additionally, themute switching function can bemapped to a function keyusing sound #8.Asthe locomotive
drives out of the visible range of a model railway, e.g. into a shadow station, then the entire sound of the
locomotive can be softly faded out by switching on this special function (preset at the factory to function
f8). The sound continues to be generated by the module in this "faded out" condition in accordance with
the respective driving conditions. If the sound is gradually faded in by subsequently switching the special
function off, then the sound again will adapt to the driving conditions in effect at that moment.
Volume
Speakervolume can bechanged viaCV 902.As shippedfrom the factory, thevolume is set to its
maximum level.
Conguring the dynamic change of sound
Settingswhichaffectthesoundpertainingtotheimmediateoperating(driving)conditioncanbemodied
to accommodate the type of locomotive being used. These settings affect the change of sound with load
changes (e.g., uphill and downhill), the speed threshold for triggering the squealing brake sound and the
switching threshold for the electrical exhaust with an electric locomotive (E-loco).
CV925isusedtodeneloadsensitivity.Ifavalueof1isprogrammedhere,thenthesoundreactsvery
quicklytouphilland/ordownhilldriving,whereasavalueof8producesaretardedreaction.CV921sets
theminimumtriggerlevelforachangeofsoundforaloadincrease(goinguphill)andCV922controls
the minimum trigger level for a change of sound for a load decrease (driving downhill). All values depend
on the locomotive decoder used as well as the locomotive itself, and therefore must be determined by
experimentation.
CV924setsthespeedthresholdatwhichthebrakesquealingsoundisproducedwhenthespeedofthe
locomotive is reduced.
CV923speciesthespeedthresholdatwhichpointanelectriclocomotive(E-lok)producessoundfor
its cooling exhaust.
Attaching the sound module
Using a piece of double-sided "sticky" tape, fasten the sound module to any place in the locomotive. The
sticky tape holds the sound module reliably in place and protects it from coming in contact with other
wires, components, etc.
Start-up
Makesurethatplacingthemoduleinthelocomotivewillnotcauseashortcircuit!Alsoinsurethat,once
you have replaced the body (shell) of the locomotive no wires are "pinched" which could also cause
short-circuits to develop.
A short circuit between engine, lighting, pickup shoe, wheel sets and the module can possibly destroy the decoder’s
components as well as the electronic of the locomotive!
Switching sounds on and off
Each sound module has 6 different, adjustable sounds plus a mute switching function:
Default Operation Type of Sound Number of Sound
Function f1 Motortone 3
Function f2 Whistle or horn, repetitive 2
Functionf3 Uncoupling 4
Function f4 Whistle or horn, 2x 1
Function f5
Conductor wistle short, only combined with f1
16
Function f6 Station announcement
, only combined with f1
6
Function f8 Muteswitch 8
Function f9 Whistle, short 5
Function f11 Pump/Air compression 15
Functionf13 Departure signal 11
Function f16 Whistle, long 12
Ifyourunadiesellocomotive,youcaninuencethefrequencyoftheexhaust“chuff"sounds.CV938
isusedtodenethetimebetweentwoexhaustsoundsatmaximumspeedwhileCV939canbeused
todenetheperiodatminimumspeed.ThelargerthevalueintheCV,thelongerthetimebetweenthe
individual exhaust sounds.
ThevaluesfortheseCV'sarepresetatthefactoryforUhlenbrocklocomotivedecodersfor"common"
HOlocomotives,andcanbeeasilymodiedtosuitotherlocomotives.
Controlling several sound or special function modules from a locomotive decoder
UptothreesoundorspecialfunctionmodulescanbecontrolledthroughasingleSUSIinterface.CV897
isusedtoallocateeachmodule'sownCVaddressrange,thusallowingeachmoduletobeprogrammed
independently.Toaccomplishthis,eachmodulemustrstbeconnectedindividuallytothelocomotive
decoder.ItsownCVaddressrangeisdeterminedbyassigningthevalue1,2or3toCV897.Onceall
modulesareconnected,eachcanbeaddressedandprogrammedwithinitsownCVaddressrange.The
CVtobemodiedwilldependontheCVaddressrangeasspeciedinthelistofCV'sattheendofthis
document.Pleaseyounotethattheexplanationsintheprecedingsectionsrefertoaddressrange#1(CV's
900-925).UsetheappropriateCVaddressfromthelistofCV'sprovidedintheaccompanyingtable.