Bittner XR 4000 DSP Manuale utente

Bittner-Audio

Amplifier

Series XR DSP

Installation &

Operations Manual

Bittner-Audio

BITTNER Installation &OperationsManual

Power Amplifier Series XR DSP Installation &OperationsManual

Bittner -Audio

Bittner-AudioreservesspecificationprivilegesInformationinthismanualissubjecttochangewithout noticeorobligation.

Version 1.0

TABLE OF CONTENTS

O.............................................................................................................................................................1

Declarationsof Conformity.......................................................................................................................2

Caution....................................................................................................................................................2

Installation...............................................................................................................................................3

Front Panel..........................................................................................................................................3

Rear Panel..........................................................................................................................................3

AirVentilation and Cooling Requirements............................................................................................4

Power Connection...............................................................................................................................4

LED Indicators.....................................................................................................................................4

System Monitoring –AliveContact...........................................................................................................5

SXL Data Port..........................................................................................................................................5

RS-485 Ports...........................................................................................................................................5

Power Switching / Remote On/Off-Switching............................................................................................6

Audio Connections...................................................................................................................................7

Audio InputConnectors........................................................................................................................7

Input Gain Controls– DigitalPotentiometers........................................................................................7

Balanced and unbalanced Inputs, Levels.............................................................................................8

Grounding............................................................................................................................................8

DecibelExplanation.............................................................................................................................8

Loudspeaker Output Connectors..........................................................................................................8

Operation Modes.....................................................................................................................................9

Stereo Operation.................................................................................................................................9

ParallelOperation................................................................................................................................9

Bridged Operation (Mono)....................................................................................................................9

DSP Processor......................................................................................................................................10

1.1 DSP ControlInterfaceSXL with SXLWeb interface:.....................................................................10

2. DSP Control over RS-485:.............................................................................................................11

Channelmeasurement...........................................................................................................................12

Warranty Terms& Conditions................................................................................................................13

TechnicalSpecifications.........................................................................................................................14

Frequency Response Full Power...................................................................................................14

Congratulationsand thank you for your decision buying an amplifierfromBITTNER. Theseamplifiersare

famousfor theirveryhigh reliability.Advanced technicalsolutionsand abigamount ofelectronicsecurity

circuitsallowa use with great efficiency.

DECLARATIONS OF CONFORMITY

Bittner-Audiohereby declaresthatthisproduct is in accordance with the following standards:

EMC Regulation 89/336/EEC (ElectromagneticCompatibility)

EN-55013 (Radio Disturbance, Emission

EN-55020 (Electromagneticimmunity)

CAUTION

To reduce the riskofelectricalshock, do not removethe cover. There are no user serviceablepartsinside,

referallservicing to qualified personnel.Replace fuses onlywith same type. Avoiddamaging the AC plug or

cord. Itcan potentially causing ashock hazard. The unitshouldonlybeconnected to anAC power supplyof

the correct voltage.

Bittner-Audio

BITTNER Installation &OperationsManual

To reduce the risk offire or electricalshock, do not expose thisappliance to rain or moisture. Do not usethis

unitin damp areasor near water.

The amplifier mustbe adapted slowlyto extremetemperature changes.Theseextremechangescan cause

moisture developmentinside the amplifierthatcan cause failure and /or electricalshock.

Though the amplifiersfromBITTNER are quite simpleto operate and arecovered by asolidchassis,

improper usecan be dangerous.Someofthe amplifiers can put out veryhigh voltagesand asizable current

at frequenciesup to 30kHz.

NEVER isolate the ground ofthe AC power cord (the non-fused earthed protectiveconductor) to eliminate

hum-problems. See chapter ‘Grounding’.

Alwaysuse safe operating techniques!Incompetent and improper servicing can voidthe warranty.

Withthe in-buildDSP processor extended functionality isavailable:

-Level Control

-Input routing ofthe input channelsto the two amplifierchannels

-10-Band Equalizer

-Dynamics(Limiter/Compressor/Gate)

-Delay

-Cross-Over

-Up to 100 presets

INSTALLATION

Upon unpacking, pleaseinspect the amplifier.Ifyou find any damage, notifyyour supplier immediately. Be

sure to savethe carton and allpacking materialsincaseyou haveto send the product to the supplier.

Please use only the originalfactorypacking.If the shipmentcarton isunavailable, contactBITTNER-Audio to

obtain a replacement.

The amplifierswill mount instandard 19-inch rackshaving sufficientdepth. For the installation 4standard

boltsshouldbe used. For proper mechanicalstability the use ofsupporting rack slideson the bottomofthe

amplifierisnecessary.

Front Panel

Rear Panel

(image can differ slightlyfromtheactual version)

Bittner-Audio

BITTNER Installation &OperationsManual

AirVentilationandCoolingRequirements

The amplifierisequipped withaforcedair-cooling systemwithvariablespeed and temperature controlled

fansto guarantee lowoperating temperature and minimalventilation noise. The seriesXRamplifiersare

equipped with fourelectronicallycontrolled fans,twoat the front side and twoat the rear side. The air flow

takesplace from the rearofthe amplifiertothe front.

Becausethe XRSeries areclassHamplifiers,overheating isnot anissueunderregular conditions.The

amplifier will heat up only slightly even under fullpower.

In caseany heat sink becomestoo hot, the temperature sensoropenstherespectiveoutput relay,

disconnecting the outputload fromthe particular channel.After cooling downto the appropriate operating

temperature the relay contactsare closed again automatically.

It isimportant to haveadequate airventilation space behind the amplifier to allowaproper airflow.In case

the amplifier ismounted into aclosed rack, do notcover the frontof the rack withdoors.Using rackswith a

closed backside, use fanson the rear rack panel (air flow to the inside of the rack).

PowerConnection

The power amplifier mustbe connected onlywith the attached three-wire

safety power cord with protectiveconductor (non-fused earthed

conductor). Thisamplifier ismade for usewith the mainsvoltage labeled

on the back of the amplifier only.

Check the label on the back panelofthe amplifierforthe appropriate

voltage. The voltage version ofthe amplifier ispreset and cannot be

changed. Make sure the voltage ofyour mainsoutletiscorrect. Damage

causedby connecting the amplifier to improper AC voltage voidsthe

warranty.

The power fusesare located on the back panelofthe amplifier and can be

accessed from the outside.Use only the appropriate fusesaslabeled.

After properlymounting and connecting the AC cord and the audio

connections,the unit can be switched on. The POWER indication LED

indicatesthat the amplifier hasbeen turned on.

LED Indicators

The amplifierisequipped with the following LEDson the front panel:

LED COLOR FUNCTION

ONLINE green Indicatesthatthe unitisconnected toan SXL unitor via RS485 network

STANDBY yellowIn controlmode (SXL, RS-485, RemoteControlVoltage) thisLED

indicatesthat amplifierisin standby mode (power switched off).Manual

power switch overridesthisseting. When standby mode isoverriden

manually, both STANDBY and POWER ledsare ON.

POWER CH1 Green Indicatesthatamplifierchannel1 ispowered up.

CLIP CH1 Red Indicatesthatthe input isoverloaded. The LED starts illuminating as

soon asthe signalis0.5 dBunder fullpower.

SIGNALCH1 Green Indicates,that signal reachesthe output stage ofthe amplifier.

PROTECT CH1 Red ThisLED will lightup assoon a protection circuithasbeen activated or

if one ofthe output relayshasbeen activated. When the amplifier is

switched on, thisLED illuminated forapproximately 1.5seconds.

POWER CH2 Green Indicatesthatamplifierchannel2 ispowered up.

CLIP CH2 Red Indicatesthatthe input isoverloaded. The LED starts illuminating as

soon asthe signalis0.5 dBunder fullpower.

SIGNALCH2 Green Indicatesthatsignalreachesthe outputstage of the amplifier.

PROTECT CH2 Red ThisLED will lightup assoon a protection circuithasbeen activated or

if one ofthe output relayshasbeen activated. When the amplifier is

switched on, thisLED illuminated forapproximately 1.5seconds.

Bittner-Audio

BITTNER Installation &OperationsManual

SYSTEM MONITORING –ALIVE CONTACT

The XRSeriesamplifiersare equipped with the ‘AliveContact’. The contactislocated on the rear panelof

the amplifier and isaGPI contact closure that indicatesthe generaloperation mode ofthe amplifier.Itis

designed asa 3-pole contactclosure that can be used in the ‘open’ mode orthe ‘closed’ mode:

Alive Contact active:indicatesthat the amplifier isworking innormal conditions

Alive Contactinactive: indicatesthat the amplifier isnot working properly:it isshut

down by the protection circuit, overheated etc.or generally

switched off

Thiscontact closure isthe simplest form ofremote systemmonitoring of the amplifierwithout

establishing aremote controlnetwork and provideseasysystemsurveillance at avery

economicallylevel. The ‘Alive Contact’ can also be integrated into a media controlnetwork as

aGPI contact closure to trigger eventuallyneeded other control procedureslike backup amplifier (spare

amplifier) switching.

SXL DATA PORT

The XRSeriesamplifiersare equipped with the SXLdata port to connect the BITTNER SXLProgrammable

ControlInterface to the amplifier. To connectthe BITTNER amplifiersto the SXL unit all amplifiers must have

a unique address. The addressisselected on the DIP switch at the rear panel ofthe amplifier and can be set

to 1 to8:

Example:Address1: ON,ON,ON,ON,ON,ON

Address2: OFF,ON,ON,ON,ON,ON

After anaddress change the amplifier must be re-powered to activatethe changes!

Up to 16 amplifier channelscan beconnected to the SXL. The 16amplifier channelscan becombined from

stereo, 4-channeland 8-channelamplifiers.

When the amplifier isconnected to the SXL, itisautomaticallyrecognised by the SXLunitand the

appropriate Link LED on the SXLfront panelindicates‘ON’. IfRS-485 communication (see nextchapter) is

not used the sametime, permanent communication withthe SXLunitisalsoindicated by fastblinking green

LED (TX) on the amplifier’srear panel.

The modelnumber and other featuresofthe amplifiercan be verified on the SXLfront panelLCD inthe

group ‘AMP’. Thegroup ‘AMP’ can be browsed using the LEFTand RIGHT keyson the SXLfrontpanel.

For more detailsplease refertothe OperationsManual ofthe BITTNERSXL.

RS-485 PORTS

The XRSeriesamplifiersare equipped with twoparallelRS485 ports,PORT1 and PORT2 via RJ-45

connectors.Using one ofthe portsasan input and the second asan output, aRS-485 network with bus

topology can be established easily.

To connect the amplifier to the controlcomputer, the RS-485 addressmustbeset with the DIP switchesat

the rear panelof theamplifier. Up to 64 addressescan be selected.

Bittner-Audio

BITTNER Installation &OperationsManual

RS485 isa multi-pointcommunicationsnetwork with up to 32 driversand 32 receiverson

a single (2-wire) busand are ableto withstand "data collisions" (buscontention)

problemsand bus fault conditions. RS485 extendsthe commonmode range forboth

driversand receivers in the so-called "tri-state" mode.

RS-485 Connector Pinout:

The RS-485 interface on the XRSeriesamplifiersisahalf-duplextransceiver with one

single bus(2-wire) for transmitting and receivingdata on the same bus.

RS485 PORTconnector (RJ45):

Pin1 RS485GND

2 NC

3 DATA+

4 DATA-

5 DATA-

6 DATA+

7 NC

8 RS485GND

Pin 3 and 6and pin 4and 5 carrythe samesignal.

Note: DATA+is pulledvia 10k resistor to +5V volts andDATA- is pushed toRS485GND

via 10k in idle state.

RS-485 Indicators

TwoLED indicatorsare activewhilereceiving data(red=RX)and transmitting data

(green=TX) over RS485.

RS-485 Address

In the RS-485 controlmode the amplifier isidentified by itsaddress.Usethe DIP

SWITCH ADDRESS 1-6 settingsto set the RS-485 node addressfrom 01 to 64:

Example:Address00: ON,ON,ON,ON,ON,ON

Address01: OFF,ON,ON,ON,ON,ON

The amplifier mustbe re-powered before the addresschange is activated !

For further information to connect the DSP controlsoftware, refer to the chapter ‘DSP

ControloverRS-485’.

POWER SWITCHING /REMOTE ON/OFF-SWITCHING

There are three optionsto switch the amplifier on and off.

Option 1 –ManualSwitching:

The amplifiercan be switched on manually byswitch placed on back panel. When

amplifierisswitched on manually, itcan't be switched on/offremotely. Manualswitch

overridesremote switch control. To switch the amplifierremotely,the manual switch must

be inOFF position.

Option 2 –Remote Switchingwith 12VDC-Control Voltage:

The PHOENIXterminalblockisused for remote switching with acontrolvoltage (12VDC). Terminal1and 2

are used asthe controlvoltage input. Supplying the controlvoltage to these terminalswillswitch the amplifier

ON. After adelay ofone secondinternallythe terminals4and5ofthe PHOENIXterminalblock willbe fed

Bittner-Audio

BITTNER Installation &OperationsManual

with the controlvoltage.Theseterminalsare intended to be connected toterminals1and 2ofthe next

amplifierfor sequentialpower switching. Up to 10 units canbedaisy-chained thisway for sequentialpower

switching.

The controlvoltage must be supplied untilthe last amplifier in the daisy-chain setup isswitched on. Ifno RS-

485 controlisused, the controlvoltage can be thenremoved. When RS-485 isused, 12 VDC muststay

connected to supplyamplifiersalsoinstandby mode. The amplifiersPowerOn/Standby mode isthen

controled over RS-485 - see section ‘DSP Controlover RS-485’.

By supplying the inverted DC controlvoltage to terminal1 and 2, theamplifier willbe switched off(turn +/- to

-/+).Asfor the powering-up procedure, the controlvoltage isinternallyfed to the terminals4and5for

supplying the controlvoltage to the next daisy-chainedamplifier.For the switching-off sequence, no delay is

engaged and all amplifiersare switched ofat thesamemoment.

The controlvoltage/amperage is12VDC and the necessary current is80mA during switching on the amplifier

or inStandby mode. The needed current iszero assoonasthe amplifier issupplied by itsownpower

supply.

RemoteSwitching PHOENIXConnector:

1 – AmplifierSwitching POSITIVE terminal

2 – AmplifierSwitching NEGATIVEterminal

3 – Control Voltage supplyforsequentialswitching POSITIVE terminal

4 – Control Voltage supplyforsequentialswitching NEGATIVEterminal

Option 3 –Remote Switching from controlunit

When connected online to controllersBITTNER SXLor viaRS-485 network to PCwith the appropriate DSP

controlsoftware, the amplifier canbe switched on and put to Standby mode by anyofthe controllers.

AUDIO CONNECTIONS

Alwaysturnoffthe amplifier before making any connections.Asanadditionalprecaution by switching the

amplifier on forthe first time,turnthe audioattenuatorsdown during powering up.

AudioInput Connectors

The XRSeries amplifiersare equippedwith twoXLRinput connectorsand parallelPHOENIXconnectors,

both on the rear panelofthe amplifier. The audioinputsofthe seriesXRamplifiersare electronically

balanced. The XLR connector isa combined XLR / TRS jack connector.

Standard

XLR Connector

Pinout:

1 =Ground, Shield

2 =Signal positive

3 =Signal negative

Input GainControls – Digital Potentiometers

The XRSeriesamplifiersare equipped with wear-free digitalrotary level

controlswith rotary stepsforeach channelat the rear panelofthe

amplifier.

Ifthe unitisconnected online to the BITTNER SXLcontrolunit or to

another controldevice (computer) via the RS-485 port,the gaincan be

controlled fromthe connected controlunit.Anychangesinthe gain

settingsfromthe controldevice willoverride the settings on thelocal

PHOENIXConnector

Pinout:

Pin 1 = Signal+CH1

Pin 2 =•Signal – CH 1

Pin 3 =•Ground CH 1 +CH 2

Pin 4 =•Signal +CH 2

Pin 5 =•Signal – CH 2

Bittner-Audio

BITTNER Installation &OperationsManual

digitalpotentiometers.Only changing the potentiometer position willoverride the lastsettingsfromthe

controlunit. In short, lastchange alwaysreplacesprevioussetting no matter whether itcamefromcontrol

unit ordigitalpotentiometer.

Attention: the last gain setting is always stored in the amplifier’s memory. Turning the amplifier on, the stored

gain setting is used. The setting of digital potentiometeris used after startup only when the potentiometer is

at -90dB position. This case amplifier starts with -90dB gain.

BalancedandunbalancedInputs, Levels

The amplifiercan accept unbalanced or balanced lines.For optimumperformance and with longer cable

runs,usebalanced lineswhenever possible. The driving device shouldbe equipped with abalanced output.

With short cables inside one rack the issue isnot thatcritical.

Abalanced connection providesexcellent noiseimmunity frominterference and ground loops.Abalanced

audioconnection isaccomplished by using adifferentialpairofsignals,isolating themfromground. While

theseconnectionsprovide great noiseimmunity, care mustbe taken when connecting balanced and

unbalanced equipmenttogether.

Grounding

The chassisgroundofthe amplifier isconnected with the ground ofthe AC power cord (thenon-fused

earthed protectiveconductor).Assoon asseveral devicesare connected with each other inasignalchain,

aground loop iscreated. Ground loopsare caused when current flows fromthe analog ground plane of one

piece ofequipment to the ground plane ofanother. Acompensating current travelsbetweenthe different

deviceson the shieldsof the audiocables.Make sure all audioconnectionsare appropriatelygrounded and

shielded to avoidhum-problems.NEVER isolate the ground ofthe AC power cord(the non-fusedearthed

protectiveconductor).Thisisa violation ofthe lawand dangerous!

Decibel Explanation

Adecibelisalogarithmicscalecommonlyused to expressdifferencesinsignallevels.It isusefulinaudio

because itcan expressawide dynamicrange with relativelysmallnumbers(or asmallmovement on a

meter), and it moreclosely matcheshowwe perceivesound.

The measurement quotedindB describesthe ratiobetweenthe quantityoftwolevels,the levelbeing

measured and areference. The absolute quantity ofthesignalisnot relevant.Thismeansthat decibelsare

alwayscomparing one quantity to another. For example, when wemeasure gainindB, weare comparing

the output level tothe input level.

To describe an absolute value, the reference point mustbe known. There are different reference points

defined.

dBV representsthe level compared to 1Volt RMS:0dBV =1V withno reference toimpedance.

dBu representsthe levelcompared to 0,775 VoltRMS on an unloaded, open circuit.

dBm representsthe power levelcompared to 1 mWatt.Thisisalevelcompared to 0,775 VoltRMS across a

600 Ohmload impedance.

1dBV equals+2.2dBu, +4dBu equals1.23 Volt RMS,the reference level of-10dBV isthe equivalent to a

level of-7.8dBu.

Headroomisameasure (usuallyindB) ofhowmuch higher the peaksofasignalcan be compared to the

nominallevelwithout clipping. That is,it comparesthe peak level(involtsRMS) to the nominallevel(involts

RMS). The differencebetween the two (in dB) isthe headroom.

LoudspeakerOutput Connectors

The impedance ofthe connected loudspeaker line couldbe between2Ohmsand16Ohms.The minimal

connected loudspeaker impedance is2Ohms.In the

BRIDGE operation mode the minimalconnected

impedance is4 Ohms.

Output wiring

Useheavygauge wire for speaker connections.The

greater the distancebetweenthe amplifier and the

speakers,the larger the diameter the wire shouldbe.

Bittner-Audio

BITTNER Installation &OperationsManual

Thiswillminimize power lossesacrossthe wire and improvedamping ofthe speaker. Wire thickness

specifications(gauges) get larger asthe wire getsthinner. So a14-gauge wire isthicker than 18-gauge wire.

Speaker cablescanbe connected to the PHOENIXconnectorsor tothe 4pinNEUTRIK SPEAKON

connectors. The PHOENIXconnectorsare preferable designed for fixedinstallations.

Speakon Connector Pinout:

1 +positiveterminal

1 negativeterminal

2 +(not connected)

2 (not connected)

It ispossibleto useboth connectionsparallel at the sametime.Pleasepay attentionthatthe “+”poleofthe

PHOENIXconnectorscorrespondsto the„1+” pin ofthe SPEAKON connector ofthe corresponding channel.

The impedance ofthe connected loudspeaker line couldbe between2Ohmsand16Ohms.The minimal

loudspeaker impedance is2 Ohms.In the operation mode BRIDGEthe minimalimpedance is4 Ohms.

OPERATION MODES

On the rear ofthe amplifier three different operationmodescan be selected on the DIP-Switch panel:

STEREO,PARALLEL and BRIDGEDMODE.

The amplifier mustbe re-powered before the mode change is activated !

StereoOperation

For stereo operation, turn the amplifier off and set the mode select switchesto the STEREO position. In this

mode, both channelsoperate independentlyofeach other, with theirinput attenuatorscontrolling their

respectivelevels. Thus, an input signalat Channel1 producesan amplifiedsignalatthe outputofChannel1,

while an inputsignalatChannel2 producesan amplified signalatthe outputofChannel 2.

The minimumload impedance for stereo operationis2 Ohmsper channel.

The loudspeaker could be connected to the SPEAKONconnector and / or to the PHOENIXconnectorsat the

same time.A mixedconnectionisalso possible.

Parallel Operation

For paralleloperation, turnthe amplifier off and set the mode selectswitcheson the PARALLEL position.

Both amplifiersare then driven by the signalofchannel1. Output connectionsare the same asfor the stereo

operation.

Onlythe input of channel1isactive,the input ofchannel2isout ofcircuit. Input attenuator 1controlsboth

channellevels

The loudspeaker couldbe connected to the SPEAKONconnector and /or to the screwterminals.Amixed

connection isalso possible.

BridgedOperation(Mono)

Both amplifierchannelscan be bridged to create apowerfulsingle-channel mono amplifier.Useextreme

caution when operating inbridged mode.To bridge the amplifier,turn the amplifieroff and set the rearmode

select switchesto the BRIDGED position.

Onlythe input of channel1 isactive,channel2 isout of circuit. Only attenuator 1 remainsactive and controls

both channelsgain. Connect the speakersacross the “+”terminalsofboth PHOENIXconnectors.The

‘positive’ poleof the loudspeaker shouldbe connected to the “+”terminal of channel1, the ‘negative’ poleto

the “+”terminalof channel2.

The recommended load impedance for the bridged operation is8Ohms.Minimalimpedance for the bridged

operation is4 Ohms.

Bittner-Audio

BITTNER Installation &OperationsManual

DSP PROCESSOR

The SeriesXR amplifiersare equipped with an internalDSP processor. With the internalprocessor extended

functionality isavailable:

-Level Control

-Input routing ofthe two amplifierchannels

-10-Band Equalizer

-Dynamics(Limiter/Compressor/Gate)

-Delay

-Cross-Over

-Up to 100 stored presets

Twoway ofcontrolling the internal DSPare available:

1. the control interfaceBITTNERSXL, connected tothe amplifier via control network

2. the DSP software installed on a computer, connected via RS-485 to the amplifier

1.1 DSP Control Interface SXLwithSXLWebinterface:

(See alsochapter ‘SXLData Port’.) The DSP can be controlled with the Web Interface of the BITTNER SXL

ControlInterface.The amplifiermustbe connected to the SXLunitbyribbon cableand asthe next step the

SXLunitmustbe connected to the controlling PC overthe Ethernet controlnetwork to establishaccessto

the built-in-sxlweb server.

When the SXLunitisaddressed viaWeb browser, the DSP controlpage ofthe Web Interface isavailable

and allfeaturesofthe DSPare accessibleviathe web interface (see image below).

The availableSXLpresets(settingsofallamplifiers,16channelsandSXL) are called Configurations(Cfg)

and can be savedand recalled fromtheSXL’sinternalmemory.

Asignalgenerator isalsoavailablewithinthe DSPfunctionalityand can be used aspilottone generator

(loudspeaker line test) or astest tone generator for measurementsetc.

Note:Controlsthatare notusedwiththe specified amplifier modelare disabled i.e. notused and notavailable.

screen shot ofthe DSP control over the SXL webinterface

Note: Toobtain access to theSXL web interface, the user mustfirst log-in. Default name/password is:

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