Bosch Appliances 9922 141 70691 en manual Volume restore function, Headphones level reduction

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DCN Wireless Installation and User Instructions Contribution Devices

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14.3.3 Volume restore function

When the configuration switches are in the correct position (refer to table 14.1), you can enable or disable the volume restore function of the headphones connection of the wireless discussion unit.

•To enable the volume restore function of the headphones, push the > volume button. (The LED around the microphone buttons come on as green.) When the wireless discussion unit is enabled, it automatically sets the last known volume.

•To disable the volume restore function of the headphones, push the < volume button. (The LED around the left microphone button comes on as red.) When the wireless discussion unit is enabled, it automatically sets the volume to -18 dB.

Note

When the wireless discussion unit has two sets of volume buttons, configure the volume restore function with the right set of volume buttons.

The volume restore function cannot be configured with the left set of volume buttons.

For example, you can enable this function in discussions in which the delegates and chairmen always use the same wireless discussion unit.

14.3.4 Headphones level reduction

When the configuration switches are in the correct position (refer to table 14.1), you can enable or disable the headphones level reduction of the wireless discussion unit.

•To enable the headphones level reduction, push the > volume button. (The LED around the left microphone button comes on as green.) When the microphone is enabled, the headphones level reduction is 18 dB.

Note

When the wireless discussion unit is in the dual delegate mode (refer to section 14.4.5) and the headphones level reduction is enabled:

•The signal that is sent to the left headphones socket is decreased when the left microphone button is pushed. The signal that is sent to the right headphones socket is not decreased.

•The signal that is sent to the right headphones socket is decreased when the right microphone button is pushed. The signal that is sent to the left headphones socket is not decreased.

•To disable the headphones level reduction, push the

<volume button. (The LED around the left microphone button comes on as red.) When the microphone is enabled, there is no headphones level reduction.

Note

When the wireless discussion unit has two sets of volume buttons, configure the headphones level reduction with the right set of volume buttons. The headphones level reduction function cannot be configured with the left set of volume buttons.

For example, you can enable this function to avoid acoustic feedback between the microphone and the headphones of the wireless discussion unit.

Bosch Security Systems 2007-02 9922 141 70691 en

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Contents DCN Wireless Page Important Safeguards Disclaimers About this manual FunctionDigital version Admonitions and notes SignsElectro-static discharges Conversion tablesTable of Contents 10.1 105 Intentionally left blank System Design and Planning Wireless network design Frequency bandIntroduction LimitsGHz 400 412 417 422 427 432 437 442 447 452 484 GHz Concepts DCN designCalculation tool Power capacity Control capacityPower supplies DCN power supply DCN-WCCUCable lengths DCN-WCCU DCN-EPSExamples Cable lengthsExample with interpreter desks DCN-IDESK Interpreter booths with LBB4114/00 Interpretation devicesOptical network design NodesDCN-CCU2 DCN-WAP1 INT-TX041 INT-TX082 INT-TX164 INT-TX328 PRS-4DEX41Definitions Power supplyCabling Maximum cable length Optical fiber lengthCable couplers Coiling Example layoutsBending Redundant cables Basic optical networkExtended optical network Tap-offs Redundant optical network with tap-offScenarios Infra-red wireless language distributionCamera control Headphones/headsets Interpreter boothsCobraNet User set-up Public areas and walkwaysDevice set-up Acoustic feedback Acoustic feedbackTechnical data System electrical and electro-acoustic characteristicsGeneral Transmission linksSafety Environmental conditionsCombined devices from input to output Combined devices from input to outputWireless devices Wireless devicesElectro-magnetic compatibility Electromagnetic compatibilityMiscellaneous MiscellaneousIntentionally left blank Central Devices Front view DCN-WCCU Wireless Central Control UnitControls, connectors and indicators Internal settings Rear viewInternal settings 10.3.3 RS232 configuration Ground Internal back-up batteryWatchdog Installation External connectionsVoltage selector Fuses10.5.2 DCN Optical network10 DCN connection LEDXLR HeadphonesAudio inputs 14 Audio input details, line level signals Audio outputsFault contact 16 Audio output details10.5.8 RS232 ports 19 RS232 portsCCU Configuration menuWAP Navigation and operation 20 VU meterTo select a parameter Bosch Security Systems 2007-02 9922 141 70691 en 21 Messages low to high importance Fault statusMain 22 Monitoring sub-menu * = default 23 DCN-WCCU Enquiry sub-menu * = defaultMonitoring DCN-WCCU Enquiry24 DCN-WAP Enquiry sub-menu * = default DCN-WAP EnquirySetup 25 Setup sub-menu * = defaultNOM PTTLoudspkr 26 Setup sub-menu * = default27 Loudspkr sub-menu * = default Wireless 28 Intercom sub-menu * = default29 Wireless sub-menu * = default IntercomDefaults 30 De-init sub-menu * = default31 Defaults sub-menu * = default De-initDCN-WAP Wireless Access Point Firmware11.4.1 General 11.4 InstallationWall or ceiling Tripod LogoConfiguration System IDCarrier Power valuePower values Operation CC B aMenu of the central control unit is open. Use these menu System System configurationInitialization Wireless modes Microphone modes OpenOverride 12.4.4 PTTRecorder Repetition rateAudio routing modes Equalized PA InsertionMix-minus Erase requests-to-speak and speakersFloor distribution Location of the operator IntercomLocation of the chairman Stop the system System operationStart the system Contribution Devices DCN-WDU Wireless Discussion Units 14.2.1 TopLeft and right sides Bottom sideDCN-WD DCN-WDD DCN-WDV Side views Microphone sensitivity Microphone sensitivityVolume restore function Headphones level reductionProcedure ModesSingle delegate ChairmanDual delegate Single delegate with auxiliary controlMicrophone buttons Remove microphone buttonsBattery 10 Install microphone buttonsSubscription RimsHeadphones sockets, details Erase the subscriptionExternal power supply ActivationDeactivation Quick reference cardAttendance LED Attendance LEDStatus LEDs DCN-MICL, DCN-MICS Pluggable Microphones Types and lengthsElectrical and acoustic properties Compatible devicesMicrophone plug, connection DCN-WLIION Battery Pack Battery capacityCapacity LEDs DCN-WCH05 Battery Charger Battery pack containers HoldInstallation, wall WallPower inlet Installation, multiple battery chargersLoop-through socket Charge level LEDsDCN-WPS Power Supply Adapter Electrical propertiesDCN-DDI Dual Delegate Interface Dual delegate interfaceSignal level switch * = default Input type switch * = defaultInput adjustment switch * = default Ambient microphone DCN-FHHDCN connections 19.6.1 DCNIntercom handset Cmrr Audio inputsConnections DCN-WFCD10 Flight Case for Wireless Discussion Units DCN-WFCCU Flight Case for DCN-WCCUIntentionally left blank Appendices Table A.3 Monitor Audio levelsTable A.2 Analog outputs DCN-DDI Table A.6 Dual delegate interfaceCentral control unit wireless Central control unit wireless ULExtension power supply DCN Next Gen Product indexWireless discussion unit Wireless dual discussion unitWireless discussion unit with voting Power Supply AdapterStatements for FCC & Industry Canada Declarations DCN Wireless Installation and User Instructions Appendices Page Page Page Page Page Page Page For more information visit
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