JRC Alphatron Marine AlphaAnnounce Installation And Operation Manual Download

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AlphaAnnounce

Installation and Operation Manual

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Summary of Contents for Alphatron Marine AlphaAnnounce

Page 1: ...AlphaAnnounce Installation and Operation Manual www jrc am ...

Page 2: ... 14 1 6 Digital Amplifier 14 1 6 1 Block Diagram 15 1 6 2 Analogue Audio Inputs 15 1 6 3 Amplifier Outputs 16 1 6 4 System and Local Bus 18 1 6 5 Setting the Address 18 1 6 6 Control Inputs and Outputs 18 1 6 6 1 Control Inputs 18 1 6 6 2 Control Outputs 19 1 6 7 Data Connections 19 1 6 7 1 RS 232 Port 19 1 6 7 2 USB A Port 19 1 6 7 3 USB B Port 19 1 6 7 4 Internal USB A Port 19 1 6 8 Configuratio...

Page 3: ...33 4 1 2 USB Connection between PC and Digital Amplifier 33 4 2 Uploading and Downloading of Configuration 34 4 2 1 Uploading to all System Units through Master Digital Amplifier 34 4 2 2 Uploading to Digital Amplifier System Units one by one 36 4 2 3 Downloading Configuration from System 36 4 3 System Setup using AlphaAnnounce Configuration Software 36 4 3 1 Definition of Basic System Info and Pa...

Page 4: ...2 Front Panel of AlphaAnnounce Extension Panel 70 5 5 Rear Panel of AlphaAnnounce Control Panel 70 5 6 Operation Instructions 71 5 7 Configuration 72 5 8 Setup 73 5 8 1 Cabling and Connection 73 5 8 2 Address and Backlight Power Setting 73 5 8 3 CTRL Output 74 5 9 Technical Specifications 75 ...

Page 5: ...I Preface I 1 Revision History Revision Nr Description Date V0 1 For review only 31 March 2017 V0 2 Minor modifications 4 April 2017 V1 0 First release 9 October 2017 5 Preface ...

Page 6: ... socket Danger Electric shock To avoid fire or electric shock do not expose the device to rain dropping liquid or high moisture Do not lay any object that contains liquid on the unit Note The device is allowed to be connected only into a grounded wall socket Note Make sure the device is ventilated enough Do not cover the front or rear ventilation openings of the device itself or the device cabinet...

Page 7: ...escription of the AlphaAnnounce Digital Amplifier 2 Description of the AlphaAnnounce Transfer unit 3 Description of the AlphaAnnounce Backup 4 Description of the AlphaAnnounce Configuration Software 5 Description of the Alpha Announce Control panel 7 Introduction ...

Page 8: ...ector for PC connection Used for system programming and administration 2 Input signal indicator Blue light indicates the presence of audio signal in each channel red light instead indicates a too high level of the input signal 3 On Stand By button and status indicator In case the operation is allowed a press of button switches the system to stand by mode Another press of button returns the system ...

Page 9: ... program when PC is connected The triggering of control input function No monitoring also clears faults All faults excluding system fault are cleared automatically if the cause of fault disappears 4 Fault indicator for amplifier or loudspeaker line Blue led indicates the presence of audio signal in loudspeaker line Note Indicator s operation is not real time and blue LED s will remain for couple o...

Page 10: ... Local Bus is designed for AVEC product family devices and mountings 18 System Bus connector System Bus is designed for AlphaAnnounce product family devices and mountings Furthermore System Bus connects different Central units together 19 48V phantom voltage selection switch for audio inputs 1 7 1 4 System Description Digital Amplifier System Unit is central of the innovative AlphaAnnounce product...

Page 11: ...See Digital Amplifier on page 14 1 5 2 Transfer Unit Line Transfer adapts 8 ohm amplifier outputs suitable for 100V loudspeakers Maximum load is 120W output Unit also 24VDC outputs for priority relays or spare amplifier control Each output can handle maximum load of 1A 24VDC 11 AlphaAnnounce Digital Amplifier ...

Page 12: ... Input and Programmable Control Device Symmetric analog audio input with 3 5mm stereo plug Volume adjust for audio input 24V Phantom output for condenser microphone Connector for external XLR connector 3 Programmable function keys For example audio input activation call off or message start Up to 32 control units to System and 8 to Local Bus Connection to Local or System bus with TIA EIA 568 cabli...

Page 13: ...nput Module Connected to Digital Amplifier control inputs when supervised control input is needed Only to be used with ADC 200 output adapter 2 Monitored inputs Fault outputs when control cable is disconnected or short circuit 1 5 7 AAC 200 Spare Amplifier Module Connected to ALT 8x8 output 1 Spare amplifier input for two Transfer Unit outputs Spare amp link to next module or option for second spa...

Page 14: ...nnounce Microphone Panel Monitored goose neck or hand microphone 8 programmable function keys Backlight dimming 3 5mm stereo plug for external program source e g iPod laptop Speaker mute output or fault output as alternative function Up to 32 control units to system 2 Data bus outputs for redundant systems Connection to Local or System bus with TIA EIA 568 cabling CAT5 6 1 6 Digital Amplifier 14 A...

Page 15: ... for condenser microphones can be selected with dip switch Each input has also tool adjustable input sensitivity to balance program sources Adjustment knobs are located above each input connector Selection for 48VDC Phantom is located on the left side of Digital Amplifier The input connector is a detachable terminal block of which max conductor s area is 1 5 mm Note Program input 6 is muted during...

Page 16: ... processing properties Low ohm 8 ohm loudspeakers can be connected to speaker outputs When line level loudspeakers are used outputs are connected to Line Transfer Unit s see Figure 5 Digital Amplifier and Transfer Unit configured for 3x80W 1x160W and 1x240W on page 17 Each output can handle 120W 100V load If 16 AlphaAnnounce Digital Amplifier ...

Page 17: ...l Amplifier unit is 640W Locked group is defined with configuration software All DSP settings from first locked group amplifier is copied to other amplifiers in the group Figure 4 Amplifier block Figure 5 Digital Amplifier and Transfer Unit configured for 3x80W 1x160W and 1x240W Output line voltage level can be changed inside the unit to from 100V to 70V 17 AlphaAnnounce Digital Amplifier ...

Page 18: ...All paging and control are powered via buses and no external power supplies are needed 1 6 5 Setting the Address Each units get own address from configuration program Address for Digital Amplifier is set with back panels dip switch Address must be set before power up DIL switch at ON position 1 6 6 Control Inputs and Outputs 1 6 6 1 Control Inputs Digital Amplifier has got eight programmable logic...

Page 19: ...tem Configuration and commissioning of the system requires that correct version of configuration software is installed to PC and Digital Amplifier USB drivers are installed correctly Details of how to setup and use program is described in the AlphaAnnounce Software Configuration on page 33 1 6 8 1 Device Address Setting of device address has been described in Setting the Address on page 18 Digital...

Page 20: ...d 2 Audio 3 Audio 1 6 8 4 System and Local Bus Out RJ 11 connector Pin Order 1 Ground 2 Audio 3 Audio 4 Relay contact NC 5 Relay contact NO 6 Relay contact Common 1 6 8 5 Transfer Unit Ctrl RJ45 connector 1 Line 1 Open collector control 2 Line 2 Open collector control 8 Line 8 Open collector control 20 AlphaAnnounce Digital Amplifier ...

Page 21: ... 7 Data A 8 Data B Note Audio and data signals must be always connected to own twisted pairs 1 6 8 7 Control In Out 1 8 Removable 16 pin terminal block connector for both control input and output Maximum conductor area that can be used is 2 5 mm Control Input 1 Control 1 2 12V 3 Control 2 4 12V 15 Control 8 16 12V 21 AlphaAnnounce Digital Amplifier ...

Page 22: ...trol 2 4 24V 15 Control 8 16 24V 1 6 8 8 RS 232 Port Pin Order 1 2 Rx Data 3 Tx Data 4 5 GND 6 7 8 9 1 6 8 9 Speaker Outputs 1 8 Removable 8 pin terminal block connector Maximum conductor area that can be used is 2 5 mm 22 AlphaAnnounce Digital Amplifier ...

Page 23: ...l power amplifiers efficiency up to 92 Analogue audio inputs either microphone to line sensitivity Phantom voltage for microphones Built in WAV message player up to 128 messages 1 6 9 2 Digital Signal Processing in Each Input 3 band parametric equalizer Digital routing to any output channel level control 1 6 9 3 Digital Signal Processing in Each Output Tone control bass treble 5 band parametric eq...

Page 24: ...al clock and calendar 25 Years automatic summer winter time setting Up to 125 time based events 1 6 9 6 Log Functions System Events Log System Error Log 1 6 9 7 System Functions System is expandable by connecting up to 64 Digital Amplifier units together via System or Local Bus Each Digital Amplifier has unique selectable address Up to 512 speaker lines paging zones and audio program groups for ba...

Page 25: ...x 80W RMS Output power for 70 100V 8 outputs Transfer Unit Total 640W 120W RMS max channel Peak wattage capability 150W 8 ohm 180W 6 ohm 260W 4 ohm Dynamic range 105 dB Mains operating voltage 100 240VAC 47 63Hz Mains type connector Class I Power consumption at VAC 40W 990W Power factor at full load 0 95 Main fuses 5x20mm 2 x T3 15A DC Power Inlet 48VDC 2x7A max Operation temperature 5 50 ºC Opera...

Page 26: ...put voltage to 70V if necessary If the required power for a loudspeaker line is higher than 80W it will be necessary to combine more outputs to make a Locked Group controlled as a single output OVERRIDE 24 V dc outputs are available for override relays If AAC 200 Amplifier Change Modules are used to have faulty amplifier change over feature override voltage is not available 2 3 Front Panel 1 PRIOR...

Page 27: ...ional power supply unit 3 CTRL IN input 8 pin RJ 45 connector for the control from the Digital Amplifier unit 4 Loudspeaker constant voltage outputs and 24 V dc commands for override relays or faulty amplifier change over Terminal for each of the 8 lines 1 Loudspeaker output 100 70V 2 Loudspeaker output 3 Ground linked to the pin 5 4 Command 24VDC 5 Command ground Note Each command for override re...

Page 28: ...onstant voltage outputs 120W max each are available in the standard configuration To have more power for one line outputs belonging to the same group can be connected parallel Example see following picture the outputs 1 and 2 are linked together to get a 160W line the outputs from 6 to 8 are linked together to get a 240W line 2 6 Specifications Input impedance 8 Ω Output voltage 100 V on request 7...

Page 29: ...he vessel s 24VDC emergency power to 48VDC system power max 700W Messages are stored in WAV format on USB memory stick which can be placed inside the unit or at the back of the AlphaAnnounce Backup unit On the front panel there is a hand held microphone for all call announcements and 4 alarm buttons ALL CALL for microphone General alarm Fire alarm Abandon ship 3 2 Connecting Backup unit is connect...

Page 30: ...ers audio inputs 1 and 5 Backup unit is powered through Amplifier unit Local bus port which will feed 12VDC and 24VDC for it 3 3 Configuration Backup unit does not need any programming when default messages are used If default messages needs to be changed it is done by replacing original files in USB memory stick inside the unit Files are stored in USB memory folder Alarm_Messages Button 1 GA alar...

Page 31: ...signal won t be heard until PTT on microphone is pressed 3 5 Volume Adjustment Message and microphone audio volume levels are set in optimal levels as default but if levels needs to be adjusted it is done with two trimmers inside the unit See Figure 7 Volume adjustment on page 32 Trimmer R7 is for adjusting message volume levels Trimmer R8 is for adjusting microphone volume levels 31 AlphaAnnounce...

Page 32: ... year 3 7 Power Supply Requirements Secondary power supply can be batteries or generator which nominal voltage is 24 VDC The needed current is strongly depending on the size of the system s speaker network Nominal operation voltage 24VDC Input voltage range 19 36VDC Absolutely maximum input voltage 48VDC Minimum continuous power supply current 10 ADC Maximum continuous current consumption of the s...

Page 33: ... to have project documentation Config Messages Alarm messages Info messages Documents prj file 4 1 2 USB Connection between PC and Digital Amplifier When the PC is for the first time connected to DIGITAL AMPLIFIER via USB cable the USB driver for Gadget Serial needs to be installed Use installation wizard and install driver into installation folder for Windows 7 64bit default folder is C Program F...

Page 34: ...Default password is 0000 If system monitoring is not activated system asks if you want to activate it Activation should not be done not until the system is complete with installation and all units are connected to it During the uploading all DIGITAL AMPLIFIER units connected to system will go to Stand By mode Stand By buttons status indicators are blinking blue If the system consist of more than o...

Page 35: ...ode and starts to upload the configuration to those Transmission through System Bus is slower than through USB connection so uploading to slave units will take couple of minutes depending on the size of the configuration When uploading to slave units is completed system will restart with uploaded configuration and all program audio routings are cleared Note all units should have different address ...

Page 36: ... to download the configuration is to load it from master unit Make sure DIGITAL AMPLIFIER connected is displayed on status bar before starting to download Password will be asked for a first download Default passwords is 0000 Note After downloading save the project on PC If the project does not exist on computer create a new project folder with save file as command 4 3 System Setup using AlphaAnnou...

Page 37: ...f Time based functions 4 3 1 Definition of Basic System Info and Password Choose from Define System menu System Parameters or select icon System parameters Project Information This information is for documentation Language and Time Settings User interface language for paging units is selected from language dialog box Supported languages at the moment are Finnish and English Each DIGITAL AMPLIFIER ...

Page 38: ... system monitoring if monitored Password Password to upload download system configuration and to access level 2 with Paging Control Unit AAE 808 is set in Password toolbar There are two user levels configure maintenance and administrator Default password to download upload is 0000 4 zeros This user level allows the user to do following system maintenance actions via Master Unit DIGITAL AMPLIFIER U...

Page 39: ...ne 3 150W 2 LOCKED amplifier output 120W 240W Line 4 160W 2 LOCKED amplifier output 120W 240W Line 5 30W 1 amplifier output 120W Line 6 50W 1 amplifier output 120W Line 7 300W 4 LOCKED amplifier output 120W 360W total 12 amplifier outputs 2 pcs DIGITAL AMPLIFIER and LINE TRANSFER units To go to the DIGITAL AMPLIFIER creation menu choose from toolbar Define System Devices DIGITAL AMPLIFIER or if on...

Page 40: ...c Priority Input is a paging audio source Local general paging is activated with control input See Definition of Control I O Features on page 58 Noise sense microphone Ambient Noise Compensation can be created when at least one Input is equipped with noise sense microphone placed to the area where sound pressure level is needed to control to compensate the changing of the background noise See Ambi...

Page 41: ...ith power of 240 480W max 350W without external power supply In the example window above outputs 6 7 and 8 is chained together working as a Locked Group named Line 6 The total output power for this line is raised to be 360W How to connect the line is described in the section LINE TRANSFER Locked Group Note It is very important to configure the Locked Group carefully for proper function of the syst...

Page 42: ...er amplifiers on locked group are in grey There are also two line levels paging outputs that can be selected to paging zones One for System bus and one for Local bus Note If Local 0dBu line is chosen the paging should come from a Unit connected to Local bus System bus line can be used only for announcements from System bus units Priority When override voltage 24V DC is used for override line atten...

Page 43: ...xiliary audio sources to certain areas Auxiliary audio source can be Tuner CE MP3 Player etc Name Use informative names for program groups to make use easier E g 1 2Floor Program Inputs All inputs that are defined as program inputs can be selected to each program group Amplifiers It is possible to create program groups freely from any available output One program group can have 1 256 amplifier out...

Page 44: ... Program Routing Mode Restore Last Routing Settings will remain the routing that has been adjusted with remote controllers before restarting system Restore Default Routing will restore routing defined for preset always when system is restarted Explained more later on Matrix routing page 18 Activate Preset When DIGITAL AMPLIFIER is connected active preset can be changed by selecting preset and pres...

Page 45: ...s have significance affect to the total capability of the sound response and level it is necessary to do the DSP settings with a great care Therefore there is a Default button in the Preset window s bottom edge to load the default settings as basic settings for a default It is strongly recommended to use it especially if the system contains any LINE TRANSFER To get an impression of the audio input...

Page 46: ...3 Band Input Filter 46 AlphaAnnounce Software Configuration ...

Page 47: ... value for instance 0 dB New value can set to New value toolbar Default routing can be used in a situation where no actual volume settings is not necessary to do by any Control Unit or Device or different preset settings is used primarily for signal routing for instance in AV systems Different user situations are included in different presets and they can be called with control unit control input ...

Page 48: ... stage configuration Matrix contains two independent 4x4 DSP chip each having a fully digital audio router where each node point s level is adjusted in case When any preset is activated During announcement When adjusting program group settings with AAE 808 or ASV 800 48 AlphaAnnounce Software Configuration ...

Page 49: ...tput stage contains 5 band parametric filter PEQ to adjust signal quality independently Parametric filter is equipped with following parameters Bypass Frequency 20 20000 Hz Gain 30 to 6 dB and Bandwidth 0 0 2 3 octaves Note Avoid multiply PEQ settings done for the same frequency that may spoil the sound quality remarkably 49 AlphaAnnounce Software Configuration ...

Page 50: ...nit is used at least one filter block is strongly recommended to be defined as a high pass filter with roll off frequency of 40 150 Hz This will reduce the needles low frequency output power delivery to the speaker line transformer Compressor With Compressor you can suppress high level signal to protect output stage Compressor setting includes all basic parameters Ratio Threshold Attack time Relea...

Page 51: ...ages named on this file are used when making configuration in offline mode without connection to DIGITAL AMPLIFIER Internal Flash Memory There are some messages stored in to the internal flash memory that must not be removed test_signal wav is used for a message repeater testing while system monitoring is active Removing of this message from memory will cause a message repeater fault fresh_signal ...

Page 52: ...to store messages on system is to shut down system disconnect USB stick and connect it straight to computer and copy messages to correct folders Also front panel USB connection can be used but it is slow to copy messages to system that way Note Never disconnect or connect USB stick when system is powered 4 3 7 Definition of Control Panel Choose from toolbar Define System Devices Paging Consoles Na...

Page 53: ... of paging control activates during a paging It is used for muting speaker s near the panel to avoid acoustic feedback Fault Output is activated if system is in fault mode Page Button Mode If Hold is selected the page button needs to keep pressed during the paging In Toggle mode paging will start by pressing page button and stop by pressing page button again All Call Group Selection If no zone sel...

Page 54: ...ng zone Control output toggleToggle DIGITAL AMPLIFIER control output Control output pulsePulse DIGITAL AMPLIFIER control output for freely configurable time Preset Change system presets Call off control Prohibit announcements below configured priority Line volume Adjusts selected output channel s level to chosen output volume level 4 3 8 Definition of Remote Control Units and Devices System consis...

Page 55: ... are Activate message paging to be played once Activate continuous message Message will be stopped by pressing the same button again or if higher priority paging occurs Activate and route Auxiliary sound source connected to the unit to defined paging zone Activate DIGITAL AMPLIFIER control outputs Change system presets Prohibit announcements below configured priority ASV 800 Program Source Remote ...

Page 56: ...tion Standards It is strongly recommended that before monitoring is activated all system components should be installed and the entire system is ready and tested System monitoring can be activated and monitoring interval set from System parameters menu Enable This selection is needed to activate the system monitoring Monitoring interval is recommended to set 60 seconds for systems that needs to fu...

Page 57: ...ler err is set however too small limit value will raise sensitivity for false alarms It is recommended to use Line End Units and 10 20 error limit value Set Reference Amplifier line monitoring references can be set either to selected DIGITAL AMPLIFIER or to all at once References and measured values for can be monitored by activating Show Results selection on System monitoring window When Unlocked...

Page 58: ...e to selected paging zone Hold control output Toggle control output Pulse control output pulse time programmable Remote start up Fire alarm reset System reset Paging not allowed to defined speaker lines call off function Ext fault monitoring for instance fault control from redundancy Power Source UPS or External Power Amplifier Activate preset Fire Bell Mute Control General paging can be used to a...

Page 59: ... Bells Amplifier fault control for spare amplifier change over 4 3 11 Ambient Noise Compensation Ambient Noise Compensation ANC is used to ensure clear and audible paging and background music in spaces where background noise level varies The reason for variation can be for example amount of public restaurant or noise caused by vehicle Railway Station One or several audio inputs can be configured f...

Page 60: ...Note Maximum Channel Level is 12dB If Channel level in preset is already for example 6dB ANC gain control can only be 6dB 60 AlphaAnnounce Software Configuration ...

Page 61: ...d Threshold Level Threshold level is the sound level where compensation starts to act It is normally the background noise pressure level where noise starts to disturb understanding of reproduced sound Paging Remain Last Gain will remain last ANC Group level settings during the paging This is recommended to use if paging or stored messages are reproduced with high sound pressure level and it might ...

Page 62: ...hen PC is connected to Master DIGITAL AMPLIFIER Each DIGITAL AMPLIFIER contains an internal clock Time and date toolbar shows the actual time taken from the connected PC s clock That can be transferred to all connected DIGITAL AMPLIFIER units by pressing the Set button It will adjust all units clock to the same time When selected the same window again the program will pick up the actual time setti...

Page 63: ...s connected to Digital Amplifier Error log can be read from Master DIGITAL AMPLIFIER by pressing the icon Error log contains the list of fault definitions with event dates and times 63 AlphaAnnounce Software Configuration ...

Page 64: ...essary to have information about the event history For instance all paging start and stop times is as well any control input s activating and deactivating is stored The system stores 1000 last actions to the memory The log file can be cleared by pressing Delete button from Action Log menu The event log gives also monitoring data about the system inside testing when results are ok Otherwise they ar...

Page 65: ...ents txt C Program files Audico Oy Audico AVEC PROJECTS Default_Project Config ActionEvents txt 4 3 13 Direct System Commands from PC Monitor on Monitor off If system monitoring is activated it can be disabled for service use by double clicking Monitor on This text is located into the right bottom edge of PC screen Double click on the text will activate it again System will remain on normal operat...

Page 66: ...output Printed copy of User Manual and User Guide 5 2 General Alpha Announce Control panel is a part of Alpha Announce Digital Public Address and General Alarm System Control panel is used to make announcements and control alarm messages If system monitoring is activated Control panel is used to indicate and clear system faults as well The main features of Alpha Announce Control panel are Goose ne...

Page 67: ...per system Alpha Announce Extension panel is used to extend the number of programmable push buttons for Alpha Announce Control panel With Extension panel the total number of push buttons controlled by one Control panel is 16 5 3 Models Alpha Announce Control panel Alpha Announce Extension panel The color of buttons is customizable to match the group and or alarm selections 5 4 Front Panel 67 Alpha...

Page 68: ...an be done by holding this button Button can also be configured to operate in toggle mode Button is blinking during prefix and message GROUP 1 button Group 1 paging zone selection and deselection Increase of backlight brightness of buttons when pushed over 2 seconds 68 AlphaAnnounce Control Panel ...

Page 69: ... activate defined prerecorded FIRE ALARM message ALL CALL button ALL CALL paging zone selection and deselection STATUS RESET button Short push clears all selected zones Pushing over 2 seconds during message repetition ends the message Pushing over 2 seconds clears active faults FAULT indication lit up is active if any fault has been detected in the system Note This is the default factory configura...

Page 70: ...th PC software in Control panel dialog 5 5 Rear Panel of AlphaAnnounce Control Panel Dry contact output for System fault remote control or local speaker mute control Aux audio input 3 5 mm stereo plug Aux audio and microphone level settings RJ 45 system bus connector to connect paging console to Alpha Announce system 70 AlphaAnnounce Control Panel ...

Page 71: ...n is established and other buttons start working If there is active fault in system the button will lit up immediately again Making Announcement Paging zones are selected with zone buttons usually green Selected zones are lit up Selection can be removed by pressing selected zone button again or removing all selections at once by pressing reset briefly When zones are selected paging is started from...

Page 72: ...o decrease the brightness hold the button below until the desired strength is achieved The backlight is reset after power on Note When using external backlight power supply the brightness of backlight must be set to maximum Clearing System Monitoring Faults When the system has detected a fault and it s active the light of the Reset button is on If you want to clear all the faults in system simply ...

Page 73: ... cable total length does not exceed 1200m In normal installation System Bus feeds all needed power voltages to the unit no external Power Supply is needed Anyhow if many units with remarkably long cables are to be used voltage drop measured from the end of the cable should be noticed and examined 1 Audio P2 2 Audio P2 3 Audio GND P3 4 Digital GND P1 5 Digital 12VDC P1 6 Audio 24VDC P3 7 Data A P4 ...

Page 74: ...nit If it recognizes a fault in the unit or in the transmission path to console it gives general System Fault indication and activates the relay control Control is to be used in VAC monitoring room etc to indicate fatal error of the system Note Control is recommended to connect between NC and COM to supervise the control cable itself Local speaker muting control Speaker s near the Paging Control C...

Page 75: ...2002 Frequency response 3 dB 200 17 000 Hz mic 50 17 000 Hz aux THD N 1 kHz 0 1 Connectors type System Bus RJ 45 Redundant Bus RJ 45 Aux audio 3 5 mm stereo plug Ext control 3 pin removable screw terminal 0 75 mm wire Operation temperature 15 50 ºC Operation humidity 20 90 RH non condensing 75 AlphaAnnounce Control Panel ...

Page 76: ...n in this document is subject to change without notice and does not represent a commitment on the part of Alphatron Marine B V T 31 10 453 4000 Document name AlphaAnnounce F 31 10 453 4010 Document nr 1017 service jrc am Version V1 0 www jrc am All rights reserved Alphatron Marine B V Centers of Excellence Houston Rotterdam Singapore Tokyo ...

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