User Manual AO 6008 rev O
Contents
1. Communication status menu By pressing the key next to the Communication Status item the user is taken to the Communication status menu Errors Retries Dropped Reset counters From this menu the user can view the error status of the unit and reset the error counters The error status shows the number of errors encountered on the incoming and outgoing busses since last error reset If the number of errors on the outgoing bus exceeds a certain amount the AO 6008 can no longer decode the audio data correctly and the audio is muted The audio is re enabled when the communication is normalised The error counters are reset by pressing the Reset key User Manual Ver and serial no menu The serial number and the unit address can be checked from the display by entering the Ver and serial no menu AO 6008 rev A Version 053 017 200 007 123 Serial Address From this menu the software and hardware version can also be viewed As usual the menu is left with the MENU key Clipboard menu From this menu the user can save the settings of the AO 6008 temporarily in the CU 60XxX This feature is to be used when settings must be copied from one AO 6008 to another The menu holds two entries Copy to clipboard Paste from clipboard When a user wants to copy settings to another AO 6008 he executes the Copy to clipboard command after he has finished setting up all the channels and volume settin2. e Functionality on the CU 61xx depends on the Feature License uploaded into the unit e Firmware in Delegate units Interpreter Units Central Units etc is upgradeable e Operated either stand alone or from a PC using the CU browser or using SW 6000 software e Added functionality and comprehensive features provided by SW 6000 software package running on PC The SW 6000 is an optional software package which expands the functionality of the DCS 6000 system The software runs on standard computer technology Standard PC with Windows 7 Server 2008 etc Main features of the SW 6000 are e Microphone management e Mimic panel operation e Interpretation management e Voting management e Message handling e Agenda handling e Data stored on SQL data base e Web service interface available for easy links to external applications e Multi language user interfaces e Supports different User types with different priorities user interfaces and control possibilities DCS 6000 Digital Conference System System components Central equipment etc CU 6105 Central Unit CU 6110 Central Unit EX 6010 Extension Unit PS 6001 DCS LAN Power Kit consisting of one PS CU and one PI 6000 PS CU Power Supply PI 6000 DCS LAN Power Inserter RC 6000 Redundancy Controller AO 6004 Audio Output Unit AO 6008 Audio Output Unit RP 6004 Repeater for four chains JB 6104 Junction Box with 4 outputs Interpreter equipment IS 6132 P LS
3. Fax 1 847 600 6446 Email info shure com Europe Middle East Africa Shure Europe Gmbh Jakob Dieffenbacher Str 12 75031 Eppingen Germany Phone 49 0 7262 9249 100 Fax 49 0 7262 9249 114 Email info shure de Asia Pacific Shure Asia Limited 22 F 625 King s Road North Point Island East Hong Kong Phone 852 2893 4290 Fax 852 2893 4055 Email info shure com hk
4. Interpreter equipment sssssssssserssrrerrsnr 6 ORE System Specification cccsccscseeseeseeeee 14 Conference units and Ch selectors 6 i f Connection Details s sssssssnnsssnnnnnnnnnnn 15 ACCESSOT ES ssasssssrsrnnsrnrrnnnnnnnnnnnnnnnnnnnna 6 N S As ACCESSOPICS ssssssssnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 15 Operating NnstructionS sssssssssssssnnnnnnnnnnn 7 6008 Audio Output Unit ccccseesseeeeee 7 2015 Shure Incorporated User Manual AO 6008 rev O docx DIS Digital Conference System Important Installation precautions Do not install the unit in a location near heat sources such as radiators or air ducts or in a place exposed to direct sunlight excessive dust or humidity mechanical vibration or shock Compliance The equipment is intended to be used in professional audio applications Note This device is not intended to be connected directly to a public internet network EMC conformance to Environment E2 Commercial and Light Industrial Testing is based on the use of supplied and recommended cable types The use of other than shielded screened cable types may degrade EMC performance Changes or modifications not expressly approved by Shure Incorporated could void your authority to operate this equipment This Class B digital apparatus complies with Canadian ICES 003 Cet appareil num rique de la classe B est conforme a la norme NMB 003 du Canada Author
5. Connector 2 ORG WHT 3 Rn wit BLU WAT s en 7 8 Pin Function 48V GRN Outgoing BRN WHT BRN WHT BRN BRN Outgoing Important Use only F UTP or U FTP shielded cables and shielded RJ45 connectors and not U UTP cable which are unshielded Accessories Cat5e Connection Cables AWG24 EC 6001 0 5 sreniiuniniiciia Connection Cable 0 5 m EC 6001 01 sisirisiinici issa Connection Cable 1 m EC 6001 02 crcsseiccecsetcessens Connection Cable 2 m EC 6001 05 scciisciciieeieeccs Connection Cable 5 m Important If other color codes are used then the four pairs are connected as follows Pair 2 Pini amp 2 Pair 3 Pin3 amp 6 Pair 1 Pin4 amp 5 Pair 4 Pin7 amp 8 The phase of the pairs must be correct and the wiring spec as stated in Cat5e EIA 568 B have to be followed Note Cat6 and Cat7 cables can normally only be terminated in sockets female and not in cable plugs Cat6 and Cat7 can thus only be used for feeding cables terminating in wall outlets or patch panels EC 6001 10 ce cece cece ees Connection Cable 10 m EC 6001 20 cecccceeeeeees Connection Cable 20 m EC 6001 50 ceeccceeeeeees Connection Cable 50 m 15 SHURE LEGENDARY PERFORMANCE www shure com United States Canada Latin America Caribbean Shure Incorporated 5800 West Touhy Avenue Niles IL 60714 4608 USA Phone 1 847 600 2000 Fax 1 847 600 1212 USA
6. please refer to the User Manuals for the relevant products DCS 6000 Digital Conference System Operating instructions 6008 Audio Output Unit General description The AO 6008 Audio Output Unit for the DCS 6000 system enables the user to record the sound from a number of interpreted language channels or floor channel on external devices such as tape or hard disk recorders by analogue interface It can also be used to distribute sound channels to for example infrared distribution or loudspeaker system Features e Decoding of 8 language channels into analogue audio chosen out of the possible 31 digital channels as well as the Floor channel in 3 qualities e The 8 decoded channels are available on 8 analogue outputs XLR connectors User Manual A number of AO 6008 can be combined to decode more channels Up to 20 pieces AO 6008 can be connected and configured in one system to decode more channels User control of the AO 6008 by using the buttons and display on the front or by sending commands and reading status from a PC via CU 60XX The unit is connected to the bus as any other unit and by controlling it from the CU 60XxX it can be placed anywhere in the system The user can set up the desired languages and volume settings read error status load save settings and view information about the unit A headphone connector on the front of the unit enables the user to check the sound from the analogue outputs The
7. shown in the first line and down is shown in the last line indicates that the current menu consists of more than 4 menu items It is therefore necessary to use the up and down buttons to leaf through menu items DCS 6000 Digital Conference System Connectors Headphone Connectors A mini jack and a standard jack are located on the front plate for connecting a headphone for listening to the Floor language or one of the interpreted languages Audio Output A to H On the back are located 8 XLR 3P connectors each supplying transformer balanced audio signal from each of the 8 channels The outputs can be used for tape recording purpose i e or for connecting a digital infrared transmitter like DT6008 DT 6032 or analogue infrared transmitter IT 6108 for wireless transmission of the interpreted languages DCS LAN connector Two RJ45 sockets are located at the back of the unit for connecting to the previous unit like the CU 6005 6010 Central Unit or any other unit with a DCS LAN connector and to the next unit like an IS 6132 Interpreter set CS 6032 Channel Selector DM CM 6xxx Conference Unit Setup Set up menu The user can change the settings for the output channels by entering the Set up menu This is done by pressing the MENU button Channel setup Volume setup Headphone setup Communication status V The menu is scrolled one line up or down by pressing the up down arrow keys If for example v is pressed the di
8. 6132 P Interpreter Unit Interpreter Loudspeaker Conference units and Ch selectors DC 6990 P Conference Unit portable with touch screen with two built in channel selector Chip card and 5 voting buttons configurable as Delegate Dual Delegate or Chairman Conference Unit portable Conference Unit portable with two built in channel selectors DM 6680 P Conference Unit portable with voting CM DM 6080 F Conference Unit flush mounted with built in channel selectors DC 6120 P DC 6190 P DM 6620 F CM DM 6680 F MU 6040 C D MU 6042 D DV 6501 F AM 6040 CS 6340 FV H Accessories User Manual Conference Unit flush mounted with Chip card and 5 voting buttons Conference Unit flush mounted with one built in channel selector Chip card and 5 voting buttons Microphone Unit for use with FD FC front plate with Loudspeaker Microphone and Buttons Available in Delegate D and Chairman C version Dual Microphone Unit for use with FD FC front plate with Loudspeaker Microphone and two delegate Buttons Voting Unit Ambient Microphone Unit Channel Selector flush mounted In addition to the unit a number of accessories are available like Storage Boxes GM 6523 Gooseneck Microphone 40 cm GM 6524 Gooseneck Microphone 50 cm GM 6525 Gooseneck Microphone 63 cm DH 6021 Delegate Headphone DH 6223 Stethoscope Headphone DH 6225 Ear Clip Headphone For detailed instruction in how to use the above units
9. SHURE LEGENDARY PERFORMANCE Conferencing and Discussion Systems AQ 6008 Audio Output USER GUIDE 2015 Shure Incorporated User Manual AO 6008 rev O docx DCS 6000 Digital Conference System User Manual Table of Contents Table of Contents cccceeeeeeeeeeeeeeeeeeeeeeeeeee 2 General description ssseeseesseeeeeeeeeees 7 Important sssssssssnsnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nn 3 FEALULES ieee etter 7 Installation precautions 0ccceeeees 3 User controls indications amp connections 8 Compliance EEP EE EPERE EAE E SEE E EEEE 3 Setup nnsonnsunnsunnsunnsnanonannnanunnsunnsnnnsunnunnnn 9 Information to the user cccceeeeeeeeeeeeenees 3 Normal Operation ccccceeeeeeeeeeeeeneeaes 11 Cleaning eco a e ea raaa r aa Taar aaa 3 System Setup sssssssss 12 Repacking cscceesceeeseeeeeeeeueeeeueeeeueeeouenae 4 General guidelines csccseceeseeeeeeeenees 12 Warranty ccccecceeeeeeeeeeeeeeseeeeeeeeeeeseneesenee 4 Typical SChematiCs sccsesseesneseeeeeseeseees 13 Your DCS 6000 Conference System 5 Using AO 6008 with DT 60xx Digital IR The DCS 6000 system cccsesessseseseseeees 5 Transmitter ssssssssssssunnnnnnnnnnnnnnnnnnnnnnn 13 Using AO 6008 with IT 6108 IR System components eR AT Pete TS 2 Transmitter ssssssssssnnnnnnnnnnnnnnnnnnnnnnnn 13 Central equipment etC s sssssrsrsererrrreree 6 TAO Technical Specifications ccscsscseeseeseees 14
10. The DT 60XX input level settings should be set to 6dB Using AO 6008 with IT 6108 IR Transmitter When using the AO 6008 with the IT 6108 Infrared Transmitter the audio output level on the AO 6008 has to be set to match the sensitivity on the transmitter The correct level to be set on each connected channel on the AO 6008 is 12db 13 DCS 6000 Digital Conference System User Manual Technical Specifications System Specification Digital Section Sound quality 20 bit audio 32 kHz sampling frequency Analog Section Output signal type ground lifting transformer balanced Nominal output level 0 dBm at nominal input Max Output leveli siis crerrrtr snerist 15 dBm Frequency reSpOonSe sssssrsrrrrrerrrrrrrersrns 125 15kHz Signal to noise ratio eceeeeeeeeeeee eset eens gt 85 dBA Total harmonic distortion cceeeeeeeeee tees lt 0 1 General Power requirement ccecece eee eee eee ee nena eee 24 48 V DC Power CONSUMPTION cceeeee ee eee eee e eens 5W maximum Power supplied from PETAN me iupeaian tienes CU 61xx EX 6010 PS 6000 Temperature to guarantee specified performance iah 5 Deg C to 40 Deg C 35 to 80 humidity Storage temperature induki 20 Deg C to 60 Deg C 10 to 80 humidity Weighted ma nenad na hid aenar Aa Ea ANa a aa 4 5 kg Dimensions W x H x D 425 483 x 87 x 317 357 mm Dimensions in bracket are including 19 brackets C
11. de MNS e Maximum cable length in one chain when e Maximum cable length in one chain is 200 m using repeaters is 650 m without repeater This includes If the last unit in one chain is a CS 6032 Channel Selector this unit has to be terminated with an external termination as the CS 6032 does not have an internal termination interconnection cables between the units The max usable cable length depends on 12 DCS 6000 Digital Conference System Typical schematics Connect the AO 6008 to the DCS 6000 network using Cat 5 cables The Analog Audio output connectors are connected to either Tape recorders 8 channels 8 channels External systems Out A B C D E F G H DCS LAN o Chairman Central Unit Digital Transmitter Delegate User Manual for recording the interpreted channels or to DT 6008 DT 6032 Infrared Transmitter for transmitting the interpreted channels wireless 7 lt lt OR Delegate Digital Receivers w Ge Delegate Delegate Interpreter To other interpreter booth Interpreter Using AO 6008 with DT 60xx Digital IR Transmitter When using the AO 6008 with the DT 60xx Infrared Transmitter the audio output level on the AO 6008 has to be set to match the sensitivity on the transmitter The correct level to be set on each connected channel on the AO 6008 is 3dB This level is factory preset but can as earlier mentioned be changed using SW 6000
12. gs This brings out a confirmation display Settings copied to clipboard The settings are then transferred to another unit by executing the Paste from clipboard command on that unit The Paste from clipboard command brings out a confirmation display This will replace current settings Proceed If the user presses ENTER the settings of the unit are replaced by the settings stored in the clipboard The settings stored in the clipboard are e Channel settings for all 8 outputs 10 DCS 6000 Digital Conference System e Volume settings for all 8 outputs Storing AO 6008 settings Each time the user changes the language or volume for an output on an AO 6008 it is communicated to the CU 60XX This means that the CU 60XX always has an updated copy of the AO 6008 unit s settings and it is therefore possible to store the settings in non volatile memory on the CU 60XX by executing the Save Configuration command on the CU 60XX In this way the settings for each AO 6008 will be recalled automatically when powering up the system If the Save Configuration command is not executed the settings are only stored as long as the CU 60XX has power If an AO 6008 Unit is removed and reinserted while there is power on the CU 60XX the AO 6008 will keep its settings but if the system is powered off and on again the AO 6008 will get the settings stored in FLASH Original Attenuation menu The Original At
13. irmation display is shown Unit unlocked The lock status is being saved in the CU 60XX and retransmitted to the unit after power up Normal operation Normal Operation Display In normal operation the user must be able to check the language setting of all the output channels from a single display without pressing any buttons This is the Normal Operation Display This display indicates which language channel has been assigned for each of the 8 outputs And the filled square indicates the channel where the headphone is monitoring Use the up A and down W buttons to select the headphone monitoring channel If an output is set to a language that no longer exists the language indication will be The user can then choose a new language for the channel If no buttons have been pressed for 2 minutes the display will change to shown the Normal Operation display Menu The user has access to the following functions by pressing the Menu button e Language for each output channel e Volume setting for each channel e Monitoring output and volume for headphone Communication status Unit info Load save of configuration Original Attenuation 11 DCS 6000 Digital Conference System User Manual system Setup General guidelines Connect the AO 6008 to the various units using Cat the units connected and length of feeding 5 FTP or STP cables Please observe the following cables etc Gui
14. it indicates a confirmation of the possible changes made within the selection The Menu system returns to the previous menu Notice that some changes are applied immediately and confirmation is thus not required 3 Menu button The Menu button is also used when a selection is made in the Main Menu The Menu button concludes the selection but in contrast to the Enter button the Menu button does not confirm a possible change made within the selection Instead the Menu system returns to the previous menu without confirming changes if confirmation is required 4 Up A and Down buttons In the normal operation display these buttons are used to select the headphone monitoring channel In the set up menu the Up and Down buttons are used to leaf through menu items or to increase decrease values within a selection Symbols The following symbols are used on the LCD display b G The dash symbol preceding a line of text identifies a submenu or a changeable parameter The submenu or parameter can be selected by pressing the corresponding select button EI gt The gt symbol preceding a line of text identifies a selected parameter The parameter can be changed by pressing the up and down buttons The gt symbol is shown as long as the value of the parameter currently used is the same as the value shown in the display AW The up and down symbols shown in the right side of the display up is
15. ized under the verification provision of FCC Part 15B Please follow your regional recycling scheme for batteries packaging and electronic waste Information to the user This equipment has been tested and found to comply with the limits for a Class B digital device Cleaning To keep the cabinet in its original condition periodically clean it with a soft cloth Stubborn stains may be removed with a cloth lightly User Manual To avoid moisture condensations do not install the unit where the temperature may rise rapidly pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures e Reorient or relocate the receiving antenna e Increase the separation between the equipment and the receiver e Connect the equipment to an outlet on a circuit different from that to which the e receiver is connected e Consu
16. lt the dealer or an experienced radio TV technician for help dampened with a mild detergent solution Never use organic solvents such as thinners or abrasive cleaners since these will damage the cabinet DIS Digital Conference System Repacking Save the original shipping cardboard box and packing material they will become handy if you ever have to ship the unit For maximum protection Warranty The individual units in the DCS 6000 system are minimum covered by 24 months warranty against defects in materials or workmanship User Manual re pack the unit as originally packed from the factory DCS 6000 Digital Conference System User Manual Your DCS 6000 Conference System The DCS 6000 system DCS 6000 Digital Conference System is a system to be used at meetings where a number of people are addressing the Floor in a structured manor The audio from the Conference units can be heard in the built in loudspeakers in the units The system does also allow for simultaneous interpretation for international conferences where multiple languages are used To enable all participants to understand the proceedings interpreters can simultaneously translate the speaker s language as required These interpretations are distributed through the connected Conference units and delegates can select the language of their choice and listen to it through headphones DCS 6000 Digital Conference System comprises of one CU 61xx Ce
17. ntral Unit and a number of Conference Units Gooseneck Microphones and other accessories depending on the system configuration The DCS 6000 system has the following main features e Fully digital e Excellent sound quality e State of the Art fully digital integrated interpretation discussion and voting system offering interpretation language distribution conference microphone and voting facilities with attendance check with Chip Card e Digital transmission of audio from to the Conference unit to from the central unit using a unique digital DATA and AUDIO bus named DCS LAN e Control of up to 3800 conference units This number does not include Channel Selectors Repeaters etc In practical use there are no limits for the number of Channel Selectors in a system e Delegate and Interpreter units are powered and controlled by the CU 61xx Central Unit which drives up to app 50 units with the PS CU power supply e EX 6010 Extension Unit or PS 6001 DCS LAN Power Kit is available if more units are required e Delayed switching on of power to the two DCS LAN chains to minimize the total in rush current on the Mains supply e Designed for 31 interpretation channels and 8 open microphones e Audio scrambling of the audio to avoid eavesdropping e Designed in a standard 1HE 19 cabinet e TCP IP connection on CU 61xx for external operation of the system using a PC or control system such as AMX or Crestron
18. onnectors DCS LAN loop through ssseserssrrrresrrens 2 pieces RJ45 Analog outputs connectors 8 XLR3 male connectors Remote Control commands in out By using SW 6000 the user can control the AO 6008 through the CU 61XX A number of control messages are used for this communication By using SW 6000 the user can monitor control the following settings in the AO 6008 through the CU 61xx Hs Nests Huadu na eagbaes O Dh auaaend yea alae Oia we Error status 8 cos o a AA Channel number for each channel Fo T E Volume setting for each channel Err O nas saeeaconmeeR een 2es Serial number aon E be Saudeinen aa vaicad E E Software version Bedok buek sh eidhe ts a aAa a Ea aa aa ETA EAA Hardware version The CU 6005 6010 can control the following settings CES sO Mea a aa aA Volume steps for all channel Thanin Channel number for each output channel Eiis Volume setting for each channel and headphone Ea bide a E dae e a Yanks Error counter reset Specifications are subject to change without notice 14 DCS 6000 Digital Conference System Connection Details DCS LAN Chain The DCS 6000 system uses shielded Cat5e Cat6 or Cat7 F UTP or U FTP cables with shielded RJ45 connectors EIA 568 B wiring shall be used Important The names of Cat5 6 7 cable type have changed Old name New name FTP F UTP STP U FTP UTP U UTP User Manual How to wire a Cat5e EIA 568 B cable to a RJ45 con Connector 1
19. sound is routed from the XLR connectors through an analogue switch to the headphones DCS 6000 Digital Conference System User controls indications amp connections Front plate layout User Manual The front plate layout of the AO 6008 Audio Output Unit consists of a large illuminated LCD display and 8 buttons for setting up controlling the unit A 12ALB B 14ENG c 15NORE D OFLO E 13DAN F 1FIN G 2 SWE H 3POL Front plate controls The AO 6008 Audio Output Unit features the following controls and displays LCD Display The display is a multi line dot matrix back lit LCD display It is possible to view the language settings for all 8 channels simultaneously By navigating a menu structure the user can access the settings for a particular channel Buttons Eight push buttons are placed on the front of the AO 6008 for changing the languages and volume settings for the output channels as well as for navigating the menu structure The buttons have the following general functionality 1 Four select buttons Four buttons placed on the left hand side of the display Each button is associated with a line pointing towards a text line in the display This indicates that pushing the button selects the functionality 2 Enter button The Enter button is used when a selection is made in the Menu Pressing the Enter button concludes the selection made and at the same time
20. splay will reveal the next menu item at the last line Volume setup Headphone setup Communication status Ver and serial no v The menu wraps around when the last menu item is reached at the bottom making Language the last entry in the display The whole list contains the following entries User Manual Channel setup Volume setup Headphone setup Communication status Ver and serial no Clipboard Original Attenuation Channel setup menu If the Channel setup entry is chosen the Channel menu is shown A 12Polish B 13Albanian C 2English D 5Danish An entry can be changed by selecting it with the select keys This is marked by an gt to the left of the entry 12Polish 13Albanian 2English 5Danish Now the language can be toggled up or down with the arrow keys The change is accepted with the ENTER key or discarded with the MENU key The channel can be adjusted between Floor 2 Floor 1 Floor as the lowest channel up to the number of open interpreter channels The Channel menu is left with the MENU key Floor output There are 3 floor outputs available at the Channel menu Floor Automatic gain controlled output Floor 1 Loudspeaker audio unregulated Floor 2 Loudspeaker audio regulated An ambience microphone will only be active on the Floor channel not on Floor 1 or Floor 2 Volume setup menu By pressing the Volume button from the Set up menu the
21. tenuation menu gives access to setting the attenuation level In systems where channel selectors are used along with delegate microphones acoustic feedback can occur This effect can be minimized by lowering the volume on the selected channel or the attenuation when it is carrying floor audio because there is no interpretation taking place on the channel The attenuation level can be adjusted between 20 and O dB The O GB setting is used when no attenuation is desired When selecting Off the output is muted Lock feature A feature is included to hide part of the set up menu from the user The lock can be enabled disabled locally from the unit by pressing a predefined key combination When in locked mode the user only has access to the Headphone Ver and serial no and Communication menus and is thereby unable to make any changes to the unit configuration The unavailable menu entries will not have a sign to the left of the entry Channel setup Volume setup Headphone setup Communication status V If the user presses one of the disabled menu entries the Unit locked message is shown for three seconds The lock is activated from the unit by holding the ENTER button depressed for five seconds in the set User Manual up menu display This brings up a confirmation display for three seconds Unit locked The unit is unlocked in the same way by holding the ENTER key depressed and a conf
22. user gains access to the Volume menu From this menu it is possible to change the volume setting for each channel individually from 40 dB to 15 dB in steps of 1 dB When selecting Off the output is muted DCS 6000 Digital Conference System The volume level for a specific output is changed in the same way as the language setting by pressing one of the four SELECT buttons The changes are applied instantly to the audio when the up down keys are pressed so the user can check the volume level while adjusting it The last item on the volume menu list is All by selecting this item the user can change the volume setting for all the outputs simultaneously The outputs are all set to the value selected in this menu item Pressing the MENU button leaves the volume menu This brings back the Set up menu Headphone setup menu The Headphone setup menu gives access to the headphone settings Headphone monitoring A Headphone volume 20dB The Headphone monitoring entry indicates the analogue output from which the audio for the headphones are taken It is altered by selecting it and using the up down keys Range is A H Headphone volume adjusts the level of the headphone monitoring output this attenuation is applied to the channel output which is already under volume control Range is OdB 62dB Off is mute in steps of 1 dB It is selected and altered in the same way as the Headphone monitoring entry
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