Linear Acoustic AERO.10 User Manual Download

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AERO.10 DTV Audio Processor

User Guide

User Guide version 0.5

Linear Acoustic

108 Foxshire Drive

Lancaster, PA 17601

(717) 735-‐‑3611 phone

(717) 735-‐‑3612 fax

(216) 622-‐‑0247 24/7 Technical Support

O16/

2/18114

Summary of Contents for AERO.10

Page 1: ...1 AERO 10 DTV Audio Processor User Guide User Guide version 0 5 Linear Acoustic 108 Foxshire Drive Lancaster PA 17601 717 735 3611 phone 717 735 3612 fax 216 622 0247 24 7 Technical Support O16 2 18114 ...

Page 2: ...required to correct the interference at his or her own expense CANADA This Class A digital apparatus complies with Canadian ICES 003 UL WARNING Troubleshooting must be performed by a trained technician Do not attempt to service this equipment unless you are qualified to do so Check that the correct fuses have been installed To reduce the risk of fire replace only with fuses of the same type and ra...

Page 3: ... AND TO GUARD AGAINST POTENTIAL SHOCK HAZARD OR RISK OF FIRE THE FOLLOWING MUST BE OBSERVED ENSURE THAT YOUR MAINS SUPPLY IS IN THE CORRECT RANGE FOR THE INPUT POWER REQUIREMENT OF THE UNIT ENSURE FUSES FITTED ARE THE CORRECT RATING AND TYPE AS MARKED ON THE U NIT THE UNIT MUST BE EARTHED BY CONNECTING TO A CORRECTLY WIRED AND EARTHED POWER OUTLET THE POWER CORD SUPPLIED WITH THIS UNIT MUST BE WIR...

Page 4: ...ZE DI CAFFÈ DEVE ESSERE APPOGGIATO SUL DISPOSITIVO PER UNA PERFETTA SICUREZZA ED AL FINE DI EVITARE EVENTUALI RISCHI DI SCOSSA ÊLETTRICA O D INCENDIO VANNO OSSERVATE LE SEGUENTI MISURE DI SICU REZZA ASSICURARSI CHE IL SELETTORE DI CAMBIO TENSIONE SIA POS IZIONATO SU L VALORE CORRETTO ASSICURARSI CHE LA PORTATA ED IL TIPO DI FUSIBILI SIANO QUELLI PRESCRITTI DALLA CASA COSTRU TTRICE L APPARECCHIATUR...

Page 5: ...L UTTAG EL SLADDEN SOM MEDFÖLJER DENNA ENHET MÅSTE KOPPLAS ENLIGT FOLJANDE FAS BRUN NEUTRAL BLÅ JORD GRÖN GUL BELANGRIJK VEILIGHEIDS VOORSCHRIFT DEZE UN IT VOLDOET AAN DE EN60065 VEILIGHEIDS STANDAARDS DIT APPARAAT MAG NIET ORDEN BLOOTGESTELD AAN VOCHT VANWEGE HET RISICO DAT ER DRUPPELS IN HET APPARAAT VALLEN DIENT U ER GEEN VLOEISTOFFEN IN BEKERS OP TE PLAATSEN VOOR EEN VEILIG GEBRUIK EN OM HET G...

Page 6: ...lat blade screwdriver Carefully pull out the fuse carrier 2 Check that the replacement fuse has the correct rating The fuse carrier must be inserted into the compartment carefully Do not force the carrier into the compartment or both could be damaged 3 Snap the fuse compartment door closed The switching power supply contains a separate internal fuse Most fault conditions should be protected by the...

Page 7: ...r comments SERVICE You must contact Linear Acoustic before returning any equipment for factory service We will need your unit s serial number located on the back of the unit Linear Acoustic will issue a return authorization number which must be written on the exterior of your shipping container Please do not include cables or accessories unless specifically requested by the Technical Support Engin...

Page 8: ... the second 2nd year the customer will pay the freight to return the warranted Product to Linear Acoustic Linear Acoustic will then at its sole discretion repair or replace the warranted Product and return it to the end user at Linear Acoustic expense In each of the above the unit is to be returned directly to Linear Acoustic with a return authorization RA number clearly marked on the packaging Pl...

Page 9: ...hase LIMITATION OF LIABILITY It is understood and agreed that the liability of Linear Acoustic whether in contract in tort under any warranty in negligence or otherwise shall not exceed the cost of repair or replacement of the defective components and under no circumstances shall Linear Acoustic be liable for incidental special direct indirect or consequential damages or loss of use revenue or pro...

Page 10: ... 5 3 Analog I O 18 1 5 4 Network Connection 18 1 5 5 SDI I O 18 1 5 6 AES I O 18 1 5 7 AES Ref 18 1 5 8 GPI O 19 1 5 9 AC Power Connection 19 1 5 10 Unused Reserved Connections 19 1 6 Installation and Mounting 20 1 6 1 Installation 20 1 6 2 Power 20 1 7 1 Block diagram 20 Chapter 2 Getting Started 22 2 1 Start Here 22 2 2 Quick Start 22 2 2 1 Racking and Power 22 2 2 2 Installing NfRemote 22 2 2 3...

Page 11: ...ontrol 35 4 1 Overview 35 4 2 NfRemote 35 4 2 1 Installation 36 4 2 2 Initialization 37 4 2 3 Getting Started Using NfRemote 39 4 2 4 Tree and Tabbed Navigation 40 4 2 4 1 Tree Navigation 40 4 2 4 2 Tabbed Navigation 41 4 2 5 Display Configuration 42 4 2 6 Configuring Meter Displays 43 4 2 7 Configuring Loudness Meters 46 4 3 HTTP Server 47 4 3 1 HTTP Access IP Whitelist 48 4 3 1 1 Front Panel 48 ...

Page 12: ...57 5 2 5 Clock Reference 57 5 2 6 Input Source 58 5 2 7 Sample Rate Converter SRC Bypass 58 5 2 8 Mute Input 3 6 58 5 2 9 Output Routing AES 59 5 2 10 Output Routing SDI 59 5 2 11 SDI Embedding 59 5 3 Audio Processing Setup 60 5 3 1 UPMAX II Upmixing 60 5 3 2 DRC Program 1 61 5 3 3 DRC Program 2 and DRC Program 3 61 5 3 4 Video Delay 61 5 3 5 Audio Delay 61 Chapter 6 Specifications 63 6 1 Physical...

Page 13: ...13 Sports 5B Gen 67 TV 4B Gen 67 TV 5B Gen Default 67 TV 5B Hvy 67 TV 5B Light 68 TV 5B Loud 68 Appendix B Connector Pinout 69 Analog I O 69 GPI O 70 ...

Page 14: ...e 21 NfRemote Connection Screen 38 Figure 22 NfRemote Toolbar 40 Figure 23 NfRemote in Tree Navigation Mode 41 Figure 24 Breadcrumbs which are shown in Tree Navigation Mode 41 Figure 25 NfRemote Tabbed Navigation View 42 Figure 26 NfRemote Menu Window 43 Figure 27 Meter Display Presets 43 Figure 28 Meter Display Preset 1 Configuration Example 44 Figure 29 RTA Meter Configuration Panel 46 Figure 30...

Page 15: ... server address s The IP address of the PC that will be used to connect to the AERO 10 If using an SDI Input which channels of the SDI input stream contain the audio program s to be processed If outputting signals via the SDI Output which channels of the SDI Output stream the loudness controlled audio program s are to be embedded in Having this information will allow you to configure the unit for ...

Page 16: ...ing and Inspection Before unpacking the unit inspect the outer carton for shipping damage If the carton shows damage inspect the unit in those areas Please save the carefully designed shipping carton and packing materials In the unlikely event that the unit needs to be returned to the factory alternate cartons or packing materials may not be adequate and can cause damage not covered by warranty Th...

Page 17: ...and offers a number of benefits Operation of the AERO 10 via the front panel and via NfRemote is described later in this manual 1 4 2 Rear panel Figure 2 AERO 10 Rear Panel The rear panel of the AERO 10 is where most connections are made 1 5 Connections This section covers the connections found on the AERO 10 Except where noted all connections are on the rear panel of the unit 1 5 1 Front Panel He...

Page 18: ...nection An auto sensing 100 1000 BASE T Ethernet port is provided via a standard RJ45 connector When connecting directly to a computer a crossover cable is not required Note When using the Ethernet port be sure to connect it to a stable and robust network 1 5 5 SDI I O An autosensing HD SD SDI input and output connection are included on the AERO 10 All 16 channels of an SDI stream are available fo...

Page 19: ...tor Eight parallel inputs 5 V TTL levels active low are supported GPO functions are not currently supported Pinout information for wiring harnesses is listed is listed in Appendix B 1 5 9 AC Power Connection Two IEC universal power inlets are provided These accepts AC input from 95v up through 240v at either 50 or 60 Hz 1 5 10 Unused Reserved Connections The following connections on the AERO 10 ar...

Page 20: ...luded primarily to protect you from interruptions on the power line Ideally each power supply should be fed from a different circuit and it is strongly recommended that an uninterruptable power supply UPS is used on at least one of the power supplies In all cases both supplies should be used There is no on off switch the AERO 10 will turn on when power is applied to either power supply The unit ma...

Page 21: ...21 Figure 3 Block Diagram 5 1 ch instance Figure 4 Block Diagram 2 ch instance ...

Page 22: ...walk you through the initial installation and setup of your new AERO 10 DTV Audio Processor It is possible to configure the unit with the front panel controls and display but doing so by way of the remote client NfRemote is much easier and offers a number of benefits 2 2 1 Racking and Power Use all four rack screws and allow 1RU of space above and below the unit whenever possible There is an air i...

Page 23: ...ay Click the left mouse button to select menu items and controls To adjust sliding controls click and hold the left mouse button while dragging the control 2 2 3 Front Panel Operation The AERO 10 includes a joystick encoder menu knob The operation of the joystick encoder is as follows Push Left Escape backs you out towards the Main menu Push Right Enter or moves right into the selected submenu Pus...

Page 24: ...election Click right you will see the keyboard change to numbers and symbols Turn the knob left until you get to 1 then click right to accept it Continue setting the password to 1234 Scroll to Ok and click right to accept Figure 6 Keyboard Screen You should now be back at the main screen Click down once to highlight the Unlock screen Click right the menu will change and Lock Panel will appear Figu...

Page 25: ...rom the front panel Unlock the front panel Press the encoder up and select the System field then press it to the right to enter the System menu Press the encoder down to select Network and the press it to the right to enter the Network menu Press the encoder down to select IP Config then press it right to enter the IP Configuration menu Select the Use DHCP field and press the encoder to the right ...

Page 26: ...utton Enter the desired IP address Mask Net Mask and Gateway address Press the Apply button A warning message will appear Figure 9 NfRemote Warning Screen Make your selection After selecting Yes the connection to your AERO 10 will be closed and you will need to log back in to the AERO 10 using the IP address that was just configured ...

Page 27: ... Embedding is enabled in the AERO 10 the Clock Reference will be forced to SDI input Audio Sample Rate Converters are included on the AES inputs in order to provide glitch free operation with this setting Figure 10 NfRemote Hardware I O Setup When the reference is locked and valid the Linear Acoustic logo in the upper left corner will be lit gray When no valid reference is found the Linear Acousti...

Page 28: ...nput 1 2 Center Channel and LFE C LFE on 3 4 and Left Surround and Right Surround Ls Rs 5 6 The remaining channel pairs can be used in a variety of different ways including SAP audio or a separate stereo input 2 2 7 2 Output Routing From the Main Menu navigate to Output Routing AES SDI Outputs and then to either AES Outputs or SDI Outputs depending upon which outputs you plan to use In either case...

Page 29: ...by the AERO 10 or from any source To enable or disable embedding and configure the SDI output stream navigate to System I O Setup SDI Embedding Figure 13 SDI Embedding Menu 2 2 8 Setting the Output Level to the Target Level The factory default processing preset is TV 5B GEN and is suitable for a wide range of program material It is designed to deliver an average output of 24dB LKFS If ...

Page 30: ...or lower the final output of AERO 10 to achieve 24dBFS or need to deliver a different average output level completely navigate to Instance 1 DRC Program 1 Final Adjust the Output Level control accordingly Figure 14 Adjusting Output Level ...

Page 31: ...tem This will be done for the first few examples to help those unfamiliar with the menus and front panel controls Step by step instructions that walk the user through making a change to a setting are provided After the first few examples the instructions will be shortened to select System and this has the same meaning as Press the encoder Up Down to highlight the menu selection System An instructi...

Page 32: ...it It is also possible to set the display to a meters only mode without unlocking the front panel To scroll through the parameters simply press the encoder up or down Pressing the encoder to the right expands the display of the selected field 3 1 2 Unlocking The Front Panel To unlock the front panel control Navigate to the Password field The password field is the default field selected when the AE...

Page 33: ... be back at the main screen Click down once to highlight the Unlock screen Click right the menu will change and Lock Panel will appear Figure 18 Front Panel Screen after unlocking The front panel will now be unlocked and settings may be changed Please remember to lock the front panel once you are through making adjustments It will not lock itself unless it is rebooted Note Please remember to lock ...

Page 34: ... a valid network connection 3 2 1 Changing the IP configuration to a Static IP Address To change the IP configuration from DHCP to a static IP Address via the front panel controls Unlock the front panel Press the encoder up and select the System field then press it to the right to enter the System menu Press the encoder down to select Network and the press it to the right to enter the Network menu...

Page 35: ...figuration control and monitoring of the unit from a standard web browser Internet Explorer Safari Google Chrome etc or IP commands Loudness logging and the logs themselves are accessed via the HTTP server Note Only computers that have their IP addresses listed in the HTTP Access IP whitelist are able to access the AERO 10 via a web browser or IP commands The whitelist may be configured from eithe...

Page 36: ...ly This allows monitoring of loudness levels for all program outputs to be displayed in a Master control area and at an engineer s desk at the same time Configuration and adjustments can be carried out at another PC simultaneously Multiple units can also be viewed on a single screen 4 2 1 Installation There are two ways to get NfRemote The first one is to load it from the USB flash drive that came...

Page 37: ... times Note If the IP address is 127 0 0 1 this indicates that there is not a valid IP connection to the AERO 10 Make sure that your PC is in the same subnet but not the same IP address as the AERO 10 Launch the NfRemote software and enter the AERO 10 s IP address and password The factory password is 1234 You may also fill in a friendly name in the Comment field to help identify the unit Clicking ...

Page 38: ...windows Edit the name IP address or password and then press Update to save the change in the stored entry You can also click any entry once and hit the Delete key to delete the entry from the list Double clicking an entry will open an NfRemote connection You can also choose to optimize NfRemote for mouse or touch control Click on the drop down below the Add Update Delete buttons Click Connect and ...

Page 39: ...ge your PC Ethernet port IP address to something in the same subnet and subnet mask After establishing a connection this way trouble shoot the network connection 4 2 3 Getting Started Using NfRemote After successful connection the remote starts at the Home Screen The remote interface screen is fully re sizeable and can be adjusted in the same manner as any MS Windows application screen that is via...

Page 40: ...s 4 2 4 Tree and Tabbed Navigation Tree and Tabbed navigation refer ONLY to how information and controls are displayed on the screen not the number of controls available or their precision 4 2 4 1 Tree Navigation The default mode is Tree Navigation Tree navigation works in the same way that front panel navigation works Each time you click a menu item it opens the next menu level and so on down thr...

Page 41: ...tion Mode The on screen arrows in the right side of the Breadcrumb line can be clicked to navigate between the most recently visited controls The ribbed section of the display to the far right of the arrows allows the top and bottom sections to be resized Place your pointer in the ribbed area and left click to change the relative sizes of the meters and controls 4 2 4 2 Tabbed Navigation In the Ta...

Page 42: ...that you can see all of the sub menus of Instance 1 top row right side all of the sub menus of Input in the center section and all of the available selections under Source embedding in the bottom section There are two size adjustments in Tabbed view One adjusts the meter vs menu item size and the other the relative sizes of the center and lowest section of the menus 4 2 5 Display Configuration Cli...

Page 43: ...eset from 1 to 6 and configure the display settings Figure 27 Meter Display Presets NfRemote first starts with Display Preset 1 active Any changes made to the screen choosing the number and type of meters displayed and resizing window sections are automatically saved in real time Switching back to this preset from any other automatically recalls your saved settings Each Display Preset setting is s...

Page 44: ...splays More meters can be used for full screen view than are practical when the menus are visible You can click on a meter to go directly to the display setup page and specific settings for that meter at any time To setup Meter Display preset 1 start by clicking display preset 1 next to Menu button then click on 1 Instance 1 Input Display Settings 2 Display 1 Common Hardware I O 3 Display 2 Progra...

Page 45: ...in setting up the DRCs loudness controllers and also to evaluate content pre and post processing there are several audio analyzers available in the Display settings menus For each Pgm there are meters for DRC activity Loudness Meter Loudness Graph EBU Loudness Range ITU Loudness Meter is used unless the EBU R128 meter option is installed True Peak readings are shown on each Loudness meter Common m...

Page 46: ... setting for all loudness meters in an AERO 10 When the EBU R 128 based metering option is installed the metering reference level is fixed at 23 LUFS and the loudness bar graph meters are fixed at R128 recommended integration times The digital loudness meter is an integrated meter with reset control When using the standard ITU Loudness metering the integration time of the bar graph loudness meters...

Page 47: ...lled to measure specific programs or over specific time periods Note The Loudness Meter settings available here do not affect the Loudness logs 4 3 HTTP Server The AERO 10 includes an internal HTTP server and is capable of being controlled via this interface either from a common web browser or via scripting commands Some functions such as downloading the loudness measurement logs are only availabl...

Page 48: ...ect to the AERO 10 s HTTP server Wildcard characters are supported in the Whitelist which easily enables a range of addresses to be included The Whitelist may be configured either from the AERO 10 s front panel or via NfRemote To configure the whitelist 4 3 1 1 Front Panel Unlock the front panel as described in section 2 2 4 Then navigate to System Network HTTP IP mask Scroll down and enter the IP...

Page 49: ...o System Network Access HTTP Access Figure 32 NfRemote Whitelist Configuration Panel Since wildcard characters are supported in the example above all computers with an IP address of 10 0 0 xxx are able to access the AERO 10 s HTTP server 4 3 2 Accessing the HTTP homepage The unit s HTTP server uses port 7380 To gain access to the unit s HTTP server home page open up a web browser such as Internet ...

Page 50: ...web browser Once the connection is made a screen similar to this one should appear Figure 33 AERO 10 HTTP Home Page If the host computer is not included in the AERO 10 s whitelist an error message similar to the one below will appear only with the actual IP address of the host computer referenced instead of 192 168 0 10 Figure 34 Error Message For Computers Not On Whitelist ...

Page 51: ...ch of the 3 program outputs Loudness logs are available individually for User Log Past 24 hours Past 48 hours Past 7 days Past 70 minutes high resolution The user controlled log may be started stopped and reset from the web browser or NfRemote Loudness measurement data is recorded and entered into the log file once per second with the exception of the High Resolution log file which records data ev...

Page 52: ...ry entry Timestamp real time 3 second integration time measurement 10 second integration time measurement 30 second integration time measurement TruePeak measurement Loudness target value Audio channel configuration acmod Summary Information ITU BS 1770 Integrated Ungated ITU BS 1770 2 Integrated Gated EBU R128 Integrated Ungated EBU R128 Integrated Gated Maximum True Peak Measurement EBU R128 Lou...

Page 53: ... To Loudness Logs To view the loudness measurement log click on the hyperlink provided for the loudness measurement log that is desired The loudness log will be displayed be on screen Figure 37 Loudness Log Webpage View ...

Page 54: ...comma separated value text file csv file which may be opened in applications such as Microsoft Excel To download a loudness log with Internet Explorer Right click on the log file hyperlink then save as desired filename csv Figure 38 Downloading Loudness Logs Once the csv file is downloaded the data may be searched sorted filtered and formatted as necessary ...

Page 55: ...55 Figure 39 Loudness Log Opened In Microsoft Excel ...

Page 56: ... accessed from the Front Panel or via NfRemote i e Clock Reference will be found in System I O Setup H W I O Setup in both the Front Panel menu and in NfRemote 5 2 Unit Configuration Setup Parameters 5 2 1 Password A password must ALWAYS be set in the AERO 10 The factory set password is 1234 If you choose to change the password keep it in a safe place If the password is lost or removed the unit mu...

Page 57: ...ust the time and date sliders the press Apply Time and Apply Date to apply the changes 5 2 4 Network Time Protocol NTP Reference If NTP reference is desired to be used navigate to System Time NTP Ensure that NTP Synchronization is disabled the indicator will be black Click on NTP Synchronization if necessary to disable it Enter NTP server addres es Enable NTP Synchronization 5 2 5 Clock Reference ...

Page 58: ...5 6 Left Surround Right Surround AES SDI and Analog inputs are always available to choose from 5 2 7 Sample Rate Converter SRC Bypass Sample Rate Converters are included on the AES inputs This allows for asynchronous audio to be input processed and output without any glitches The SRCs are enabled by default To bypass the SRCs which should only be considered if the AES input audio is synchronous wi...

Page 59: ...Outputs SDI Outputs 5 2 11 SDI Embedding SDI Embedding is where the construction of the final output SDI stream is determined The user has the option to Pass through the matching pair from the input SDI stream Pair shuffle from the input SDI stream Embed the processed audio specified in the Output Routing SDI section above Embed audio from an AES or Analog input source Mute the output pair To acce...

Page 60: ...rogram 1 and the Local Input Inputs 9 10 independently To configure the upmix settings for Program 1 navigate to Instance 1 UPMAX II Program 1 Main Settings Ensure that Power is enabled and that Upmix Enable is active If a mix of multichannel and 2 channel input streams is expected and a constant multichannel output is desired enable Auto Mode To adjust the upmixer parameters navigate to Instance ...

Page 61: ... Program 1 loudness meter is on target Typically 24 dB LKFS or 23 dB LUFS 5 3 3 DRC Program 2 and DRC Program 3 These are set similarly to DRC Program 1 listed above 5 3 4 Video Delay Video delay of up to one full second 1000 ms is included in order to maintain A V sync through the SDI I O To adjust the video compensating delay navigate to System I O Setup SDI Video Delay Simply grab the slider ba...

Page 62: ...62 Instance 1 Output Output Delay Simply grab the slider bar and move it to the desired delay setting ...

Page 63: ...s included Unit rated at 100 240 VAC 50 60 Hz 100 W maximum 38 W typical Power Cords IEC power cords match country of delivery Processing Structure specified at time of order 5 1 2 2 local voiceover EAS input with downmix output and dual path upmixing 2 2 2 local voiceover EAS input Algorithms AEROMAX ITU R compliant loudness control via fully adjustable wideband and multiband processing UPMAX II ...

Page 64: ...al 24dBu maximum into 600 Ohms Connector DB9 connector Digital I O HD SD SDI Auto Sensing I O Connections are unbalanced 75 Ω with internal termination via BNC F connectors De embed up to 16 audio channels from SDI monitor measure and re embed up to 16 channels Signal levels per SMPTE 292M 259M Supports up to 1080i 60 59 94 50 Hz Digital Audio I O Connections are unbalanced 75 Ω with internal term...

Page 65: ...North America Designed to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC rules CFR Power supplies are UL tested and approved Europe Designed to comply with the limits of harmonised Low Voltage Directive 2006 95 EC and EMC Directive 2004 108 EC as indicated by the affixed CE marking RoHS and WEEE compliant ...

Page 66: ...e appropriate for ingest live or network transmission applications where content is pre normalized Music 5B Hvy Music 5 Band Heavy is an aggressive preset for TV music channels that effectively delivers music programming to small televisions and portable receivers MVPD 5B Gen MVPD 5B Gen is intended for Multiple Video Program Distributors who may not have full control of all programs interstitials...

Page 67: ...5 Band General provides medium processing that features quick response with minimal background pumping It keeps dialogue present and audible even in rich surround mixes TV 4B Gen Television 4 Band General is essentially the same as TV 5B Gen below with four audio bands This keeps all other settings the same lessens the density and impact on dialogue and results in more open sounding audio albeit w...

Page 68: ...ision 5 Band Light is similar to TV 5B Gen its multiband compression ratio is lower 2 1 for more subtle action This is an excellent preset for content known to be consistent that needs just a bit of spectral polish Note that this preset allows more variations without correction but for already consistent content this is not an issue TV 5B Loud Television 5 Band Loud is similar to TV 5B Hvy but lou...

Page 69: ... balanced with a 4 dBu nominal level The pin definition of the connector is as follows Pin Function 1 In Left 2 In Right 3 Out Left 4 Out Right 5 GND Shield 6 In Left 7 In Right 8 Out Left 9 Out Right The location of the pins in the connector is as follows Figure 40 Analog I O Connector Pinout Rear Panel View ...

Page 70: ...nused 3 GPI B Active Low 16 GPO B currently unused 4 GPI C Active Low 17 GPO C currently unused 5 GPI D Active Low 18 GPO D currently unused 6 GPI E Active Low 19 GPO E currently unused 7 GPI F Active Low 20 GPO F currently unused 8 GPI G Active Low 21 GPO G currently unused 9 GPI H Active Low 22 GPO H currently unused 10 No Connection 23 Ground 11 Status OK 24 No Connection 12 No Connection 25 Gr...

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Linear Acoustic AERO.10, User Manual

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