Nexo NXtension Expander Board Manual
Contents
1. cl MASTER box r Master P dB Delay m G Delay Unt meters C mec C feet Mad amp 4 Mute C Solo Sense e DdB C 18dB Sense alam C Op Security box Security NXTENSION USER MANUAL NX242 REMOTE CONTROL PAGE This part of the GUI provides information and global control settings Global Gain Master From 6 to 6dB in 0 5dB step Gain can be typed into text box or the slider can be moved with the mouse Global Mute Mutes all channels This button stays Mute regardless of the Mute Solo option Global Delay same as interchannel delay but affect all channels Delay Units Allows choice between meters feet or milliseconds Changes the label near the Delay textboxes Mute Solo option Toggles the channel Mute buttons into Solo buttons Changes the label on those buttons and the way they change color Does not affect global mute button Sense alarm Enables or disables the Sense alarm when user gains are different than read gains Reset Measurement Double click on the Meas box to reset the reading Restore default values NX242 user adjusted values will all return to default state gain and delay to zero Restore default Freeze local Na controls Hard Lock command on the 242 itself read only Freeze Unfreeze ALL Hard Lock Prevent any changes to be made loc2. i signals before the AD converter In an analogue m d 43 analogue mode this setting does not affect the overall gain the inverse gain is performed after the DA GE Tm conversion The scale to the right of the slider shows IO maximum level that the input can take 73 uc Wu before clipping ee Ge d En Ge Made Array gain These Analogue In bar graphs behave as above in the SE Digital In function C3 Digital WA INFO box rljo H gt Name This box displays useful information for the user EE Sety NX242 Name By default the MAC address It can be selected and changed in the text edit box to have a more user friendly name The change is updated in the EtherSound network column left Reciprocally double clicking in the left column will open a dialogue box in which the name can be changed Na Version Current Setup Displays the cabinet family setup name as it is written in the Load loade 301 NX242 2x16 letters DSF rev ETH 1 Serial number 1234 Change setup SET This button changes the setup within the same family Changing cabinet family from a PS10 to a GEOT implies physical changes and can be dangerous if not done intentionally To avoid any mistake the keys 8 F must be held on the keyboard while clicking on the Set button to be able to Tools Refresh all parameters access setups from a different cabinet family
3. Version Displays the different version of the LOAD concatenation of DSP software and cabinet parameter setup DSP software If the DSP software version is different within the NX242 connected to the network a small warning sign appears near older revision numbers If the DSP software needs a newer control software second digit of the revision the EScontrol software sends a warning prompt in red in the Version box Please update the control software Serial number Kept in non volatile memory this allows a simpler identification than the MAC address and may be useful to physically identify the NX242 location within the racks NXTENSION USER MANUAL DOCUMENT REVISION 150305 PAGE 11 NX242 REMOTE CONTROL PAGE OUTPUT box From top to bottom Channellabel This duplicate the channel name displayed in the NX242 Interchannel Gain range from 6 to 6dB in step of 0 5dB The value of the gain can be entered directly in the text box Bargraph Represents the output level in dBu absolute The red zone corresponds to amplifier clipping 6dB zone is orange Mute Solo button Mute or solo the channel according to the setting in the master box so the label is changing with that option These buttons change from grey to red when muted In solo mode all other buttons become red when the solo is pressed Interchannel Delay The delay can be set either by typing it in the edit box or by pressing or button In any case the va
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5. cables Level 5 cable supports transmission rates of up to 100Mbps 200Mbps in full duplex CAT5e even 1Gbps is the most common today Category 6 supports up to 10Gbps for CAT6 and CAT7 new standards are under development Horizontal solid cable and patch stranded cable Both UTP and STP come in stranded and solid wire varieties The stranded wire is the most common and is also very flexible for bending around corners Solid wire cable has less attenuation and can span longer distances but is less flexible than stranded wire and cannot be repeatedly bent and therefore not suitable for live applications Following are the twisted pair categories NXTENSION USER MANUAL DOCUMENT REVISION 150305 PAGE 20 Ether Sound BUILDING ETHERSOUND NETWORKS Horizontal cable also called solid cable is made of plain copper conductors and has a low characteristics shift with aging lt must be used for long runs of steady cabling typically the cables inside walls and ceiling Patch cable also called stranded cable more flexible is made of stranded copper conductors and has larger losses and characteristics shifts than horizontal cable It can be used for versatile termination between wall outlet and device or between devices These cables are explicitly labeled PATCH The TIA EIA 568A wiring standard allows the use of horizontal cable up to 90m 295ft lengths with a maximum amount of 10m of patch cable for both e
6. guarantee the maximum bandwidth available and prevent network overload by limiting broadcast messages this function can not be used with EtherSound There are different types of switches using different protocols that interact with other protocols to provide all the necessary transmission services The outline for implementing protocols in altogether seven layers is defined in a worldwide ISO standard called OSI Open System Interconnection Layer 2 Data Link Layer switches Layer 2 is the communication protocol that contains the physical address of a network device It is called the data link layer or MAC Media Access Control layer and contains the address inspected by a bridge or switch Layer 2 processing is faster than layer 3 processing because less analysis of the frame is required As the EtherSound protocol contains exclusively layer 2 information switches other than layer two must not be used These layer 2 switches can be either managed or unmanaged Managed switches are necessary to set up VLAN networks so that EtherSound can co exist on a larger network with other applications Layer 3 Network Layer and Layer 4 Transport Layer switches Routers As opposed to Layer 2 switches the switching decision of these devices is based on the IP header of each frame The more intensely a frame is examined the more forwarding decisions can be made based upon type of traffic quality of service etc In order to get to thi
7. view of each NX242s under control In this mode each command is duplicated on every NX242 belonging to the group You can command the NX242 individually by click choosing the particular unit In that situation the settings will no longer remain locked to the rest of the group This is shown by turning the setting color to orange or displaying a small orange spot near NXTENSION USER MANUAL DOCUMENT REVISION 150305 PAGE 14 NX242 REMOTE CONTROL PAGE the command in both the group view and individual view Remember that changing this command again in Group view will reset according to the group value The universal group mode view shows always the maximum value within all NX242 grouped i maximum bar graph max delay etc When the notion of maximum is Irrelevant an orange X is displayed for the patch number for instance Any NX242 can belong to several groups NXTENSION USER MANUAL DOCUMENT REVISION 150305 PAGE 15 BUILDING ETHERSOUND NETWORKS Building EtherSound Networks Preface Ether Sound Large segments of this chapter are taken from building ES Networks V1 0 Courtesy of DIGIGRAM EtherSound uses standardized and well proven technology from the world of digital networks in order to cost effectively convey high quality audio The EtherSound protocol provides fully deterministic very low latency transmission of synchronized audio channels over standard Ethernet Up to 64 bi directional ch
8. ENT REVISION 150305 PAGE 21 BUILDING ETHERSOUND NETWORKS Fiber Optic Fiber Optic is similar to twisted pair but does not conduct electricity It is used in situations where a network may suffer from environmental conditions e g lightning such as in LAN connections between buildings Fiber optic is also very valuable where electronic emissions or electro magnetic interferences may have an impact on Sound the network e g on particular factory floors Furthermore fiber optic cables and Ethernet standard allow for segments up to two km 1 24mi long cf thin coaxial 185m 607ft UTP 100m 328ft and thus permit to connect remote nodes and buildings that otherwise would not be accessible Ether To use Fiber Optic cable in EtherSound networks Media Converters must be used ETHERNET CONNECTORS The Ethernet connector equipping your cable shall ensure a good metallic coupling with the metal box of the NX242 digital TDcontroller NEXO recommends NEUTRIK ETHERCON connectors Ether Sound NXTENSION USER MANUAL DOCUMENT REVISION 150305 PAGE 22 USER NOTES User notes NXTENSION USER MANUAL DOCUMENT REVISION 150305 PAGE 23 France Nexo S A 154 all e des Erables ZAC des PARIS NORD II B P 50107 F 95950 Roissy CDG Cedex Tel 33 1 48 63 19 14 Fax 33 1 48 63 24 61 e mail info nexo fr LatAM T Far East Nexo Latin America Nexo Far East Pte Ltd Nexo USA Inc Hualfin 1054 No 10 Ubi Crescent
9. MPORTANT SAFETY INSTRUCTIONS EE 2 KNOWN BUGS amp SOFTWARE ISSUES 15 MAR 05 eere eere erret nunt 3 ESMONIFTOR SORT WARE EE 3 FOREWQORD eebe 5 NXTENSION ES4 EXPANDER BOARD AT A GLANCE ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccoes 5 LINP EE 5 ISES2RANEHTAKKOKSESSRLS IR 6 ESMONITOR SOP DAW REIEQ2Szo 2 5 D a up Poo uwa sua sa pa asa 9 NX242 REMOTE CONTROL PAGE sssssssssssssssssssss 9 VIRTUAL NX242 TDCONTROLLER DIRECT ACCESS 10 INPUT BOX dues TT 10 INFO DOY S 5 a u 11 OUTPUT IOS EE 12 NIASTER BOX 12 EENEG 13 SECURELY BOX EEN 13 SAVE RECALE Te EE 14 ROU LEE EE 14 BUILDING ETHERSOUND NETWORKN K NS 16 PREFACE REN 16 ETHERSOUND NETWORK TOPOLOGIES 6 023 55 boe eae Cen eae oaa io Cot eu Ceo eee t 17 ETHERNET ADDITIONNAL HARDWARE cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccecceess 18 ETHERNET CADBILES eeesececee 2 eeecvecasusce utu sec se eoeuxcevu aon seva edo Cu l eva cao uuo wa Ca vtae eov 20 ELIHERNETCONNECIUIORS lu oo eco Scu de u i l erae seb eaux
10. NEXO INNOVATE NXtension Expander Board NXtension ES ES Monitor Software User Ether Sound IMPORTANT SAFETY INSTRUCTIONS Declaration of conformity This equipment has been tested and found to comply with the safety objectives and essential requirements of European 73 23 EEC and 89 336 EEC directives and international Standards by fulfilling the requirements of the following harmonized standards Electrical Safety EU IEC 60065 12 2001 Audio video and similar electronic apparatus Electrical Safety US UL60065 Seventh Edition dated June 30 2003 category AZSQ E241312 Electrical Safety CAN CSA C22 2 N 60065 03 Edition dated April 2003 category 2507 E241312 Electrical Safety Rest of the World CB test certificate DK 8371 based on IEC60065 2001 7nd ed with all national deviations Radiated Emission EU EN55103 1 1996 Electromagnetic compatibility Product family standard for audio video audio visual and entertainment lighting control apparatus for professional use Radiated Emission US FFC part15 class Radiated Emission CAN This Class B digital apparatus complies with Canadian ICES 003 HF Immunity EU EN55103 2 1996 Electromagnetic compatibility Product family standard for audio video audio visual and entertainment lighting control apparatus for professional use Note EMC conformance testing is based on the use of recommended cable types The use of othe
11. Page The Graphical User Interface GUI is divided in to several boxes containing commands that are related together INPUT OUTPUT INFO e EtherSound Monitor by Auvilran Beta Version File Command Help Ethersound Networks gl Properties E 1 0 Patch 8 Control 3 NET 00 0E 55 01 01 3B GS YAMAHA PM5D g DS NX242 monitor e e Input Info N Channels Analog Name 1 B Input Gain 242 monitor gt ae ae SE Setup 3 wie 0 36 JL 55 2 48 6 60 9 Version 17 12 Load rev LOADESO5 Hs 415 renge E EL Bares SES aog ood ona oam rani 1088 I Analog O Digital Tools 00 0 0 0 0 m m m 5 ds Refresh all parameters Group Delay Unit Patch E O msec ne Oe OI OG WLI Mode Protection monitoring Mute Solo Sense Gain 0dB 18dB Sense Alarm T D Security Amplifier gain Restore default 26 0 26 0 Freeze local NX controls Meas Hard Lock Amplifier power 1300 1300 Delay Group view ID NX242 monitor Type NX242 by NEXO p Service v2 0 20 Monitor v2 0 20 NXTENSION USER MANUAL DOCUMENT REVISION 150305 PAGE 9 NX242 REMOTE CONTROL PAGE Virtual NX242 TDcontroller direct access At the top of the GUI a virtual NX242 front panel allows real time control of all NX242
12. acce bove e Guau beau a 22 NXTENSION USER MANUAL DOCUMENT REVISION 150305 PAGE 4 FOREWORD Foreword This manual is intended to help you to install and operate the NXtension ES4 Expander Board Please have a look the page devoted to NXtension ES4 NEXO website http www nexo sa com asp catalogue products asp linkid 284 amp prodcode NXtension ES4 before installing your product to check if the release enclosed in the enclosed CDROM is the latest This product is intended for use with the NX242 digital TDcontroller Do not try to install itin an NX241 as damage could result NXtension ES4 Expander Board at a glance o Double DSP resources amp Setup memory of the NX242 TDcontrollers o Remote Control potentials via WLAN and Internet 10096 Ethernet and TCP IP compatible o NX242 TDcontroller full remote control including Input Output meters amp protection monitoring o 4x Digital audio inputs from 64 uncompressed channels of 24bit 48kHz of audio transmission over Ethernet EtherSound protocol 4x NX242 s processed digital audio outputs to 64x uncompressed 24bit 48kKHz channels of audio transmission over Ethernet Unpacking The NXtension Expander Board package should contain NXtension ES4 Expander Board 2 M3x4 screws for replacing blank panel rear of the NX242 M3x5 screws for fastening the NXtension Expander Board in the NX242 1x CD ROM containing this manual the LOAD needed for upda
13. ally on the NX242 and on the PC A password is asked and sent to the NX242 DOCUMENT REVISION 150305 PAGE 13 Freeze and Unfreeze local NX controls Enable or disable the NX242 REMOTE CONTROL PAGE Save recall box The Save and recall buttons store NX242 memory parameters This allows them to be recalled without PC control Group Creating removing groups Group management is achieved by right clicking in the Group view window in the left frame and selecting the GE desired menu function Each time a new group is created a corresponding Remove all groups button is inserted in the group box of each NX242 Kepname group Remove group control page and in the group box properties tab of each EtherSound device Affecting NX242 to groups Once a button corresponding to the group has been created push this button to link the corresponding NX242 to the Group Group view The button will change color and the selected NX242 will appear in the left group frame However the following restrictions prevent change of an NX grouping D Another EtherSound element belongs already to the group as a patch panel or YGDAI Group NX242s with diferent setups cant be put into the same group Group buttons that cant be accessed are grayed Group mode When the group is selected in the Group view frame group mode is enabled The Control window displayed is then a global
14. annels of 24 bit digital audio may be transported at 44 1 or 48kHz among a virtually infinite number of connected devices along with status and control data This document is a short introduction to the characteristics of Ethernet the conception of EtherSound and to EtherSound s interplay with Ethernet components and the Ethernet protocol It also gives some recommendations for equipment that has been tested at Digigram and found to comply with the EtherSound requirements Watch out for these symbols beside the corresponding text indicates that this technology is suitable for EtherSound networks designates that the technology or material described is to be avoided in the context of EtherSound networks indicates that the chapter or paragraph in question contains important additional information or differentiations READ WITH CARE ETHERSOUND TO KEEP IN MIND The EtherSound protocol by Digigram is based on true Ethernet frames It is fully compliant to Ethernet IEEE 802 3 frame format It is full duplex data is sent and received simultaneously and requires a dedicated Fast Ethernet network as it cannot share data with other elements on a network Data is typically transported via Local Area Networks LANs with a minimum bandwidth of 100Mbps 100BaseT X full duplex EtherSound allows real time transmission of 64 high quality audio channels 24 bits 48 or 44 1 KHz with a very low latency The EtherSound protocol provides comm
15. ar panel of the NX242 back panel until there is enough room to place the upper right corner inside the NX242 Supposing that you are facing the front panel of the NX242 NXTENSION USER MANUAL DOCUMENT REVISION 150305 PAGE 7 HARDWARE INSTALLATION 5 Align the NXtension Expander Board on the axis of the spacer 004 MEO006 and 008 push gently to insert the board rx ru 6 Screw the NXtension Expander Board into the spacers 3 screws M3x5 Use the screws provided with the NXtension package 7 Screw the rear panel of the NXtension Expander Board to the rear panel of the NX242 2 self taping screws M3x4 Use the screws provided with the NXtension package 8 Replace the top panel Pay special attention to the screws above the aluminum heat sink Only apply a light torque to avoid damaging the thread in the aluminum 9 Update the NX242 firmware to allow the NXtension Expander Board to be activated Follow the standard updating instructions given in the NX242 user manual or documentation provided with the LOAD NXTENSION USER MANUAL DOCUMENT REVISION 150305 PAGE 8 ESMONITOR SOFTAWRE ESmonitor Softawre Please refer to AUVITRAN AVS ESMonitor USER MANUAL that can be downloaded on AUVITRAN website http www auvitran com This contains any information about software installation and use Specific information about the NX242 control page is given below NX242 remote Control
16. articular 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 Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help The user may find the following booklet prepared by the Federal Communications Commission helpful How to identify and Resolve Radio TV Interference Problems This booklet is available from the U S Government Printing Office Washington D C 20402 Stock No 004 000 00345 4 Use of a shielded cable is required to comply within Class B limits of Part 15 of FCC Rules Pursuant to Part 15 21 of the FCC Rules any changes or modifications to this equipment not expressly approved by NEXO S A may cause harmful interference and void the FCC authorization to operate this equipment CAUTION DO NOT OPEN The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance servicing instructions in the literature accompanying the appliance PAGE 2 KNOWN BUGS amp SOFTWARE ISSUES 15 MAR 05 Known bugs amp software issue
17. function s The screen identically emulates a real NX242 screen every buttons is functional and the jog wheel can be controlled by clicking on the left right arrows INPUT box A radio button selects between 4 digital inputs and 2 digital inputs plus 2x analogue inputs Dependent on this choice the Input box will differ slightly In both cases an array EQ gain is present The value of the gain can be typed directly into the text box Digital IN Input The four input bar graphs display on a logarithmic scale ES Channels the input signal OdB is the digital full scale value where T D the AD converter clips When clipping occurs the whole EA bar graph becomes red 12dB zone is orange The ae dynamic of the bar graph is 96dB Above the bar graph 24 the EtherSound channel is displayed also visible in the Case routing tab of the ESmonitor BEEN Headroom settings have no meaning in digital IN and are not present The goal of the headroom is to adjust CUP the Analogue Gain in drive the AD converter full scale D i Mode TT Aray EQ gain C3 Analog L poe l gt Digital Je NXTENSION USER MANUAL DOCUMENT REVISION 150305 PAGE 10 NX242 REMOTE CONTROL PAGE Analogue IN Two analogue input channels A amp B and two digital Analog inputs channel corresponding to the ES routing are WE B Input Gain visible Las p 3 The headroom setting allows the scaling of the analogue o
18. lled or objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons NXTENSION USER MANUAL DOCUMENT REVISION 150305 WARNING To reduce the risk of fire or electric shock do not expose this apparatus to rain or moisture To avoid electrical shock do not remove covers Dangerous voltages exist inside Refer all servicing to qualified personnel only Information about products that generate electrical noise NOTE The United States Federal Communications Commission in 47 CFR 15 105 has specified that the following notice be brought to the attention of users of this product This equipment has been tested and found to comply with the limits for a Class B digital device 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 p
19. lue is rounded according to the NX step A clear unit label m ms ft is shown near the edit box according to the unit option selected in the master box Patch The patch allows change the outputs input matrix According to the analogue digital choice in the input box an unused channel is faded Pressing a button changes its color Several buttons can be pressed to sum the inputs Number shown on the digital buttons are relative to EtherSound routing Protection monitoring Two bar graphs are displayed by channel Temperature and displacement The top of the scale is 3dB OdB is the place where protection takes place Bottom is 20dB Log scale Red zone from 0 to 3dB orange zone from 6 to 0 Peaks are hold according to the master box option In case of a passive cabinet so two driver are using the same channel a max of both temperature or displacement is taken Physio control is not taken into account Amplifier gain and power Four text boxes display the user gain and the read gain plus the user gain and power These last values are used in the formula that determines the red zone of the output VU meter The read values are seen only in the text box and user editable by typing a desired value NXTENSION USER MANUAL DOCUMENT REVISION 150305 PAGE 12 r Outputs 5 3 D dB Delay 30 m Patch Be Protection m T D Amplifier gait 26 0 Ampifir po 1500 rI xx I i I IR
20. nds added together UTP FTP ScTP STP SFTP cables o UTP stands for Unshielded Twisted Pair It is a cable type with one or more pairs of twisted insulated copper conductors contained in a single sheath It is the most common type of cabling used in desktop communications applications For performance sake and electromagnetism behavior the UTP cables shall NOT be used o FTP stands for Overall Foil Shielded Twisted Pair ScTP for Screened Twisted Pair Cable is wrapped with an aluminized plastic foil That kind of cabling is not recommended for applications where the cable is repeatedly bent The foil tends to break leading to severe loss of performance over the distance Do not use FTP cabling for live application o STP stands for Shielded Twisted Pair Screen is made of copper braid o SFTP stands for Overall Braid Foil Shielded Twisted Pair Foil screen and braid shield For all these cables transmission characteristics are the same The difference is the behavior with respect to electromagnetic interference We recommend cabling that has a superior quality sleeve in order to protect the cable Ideally this sleeve should halogen free in order to comply for the installation standards Typical cable characteristics approximate values for your information Characteristics 100 Attenuation dB 100 Near end cross talk MHz m N E X T dB Horizontal cable CAT6 Horizontal cable CAT7 NXTENSION USER MANUAL DOCUM
21. ort devices that are able to filter and forward frames at nearly the speed of Ethernet wire speed The two most common methods used for routing the traffic are e Cut through These switches read the MAC Media Access Control address as soon as a frame is detected by the switch and immediately begin sending the frame to the destination node even as the rest of the frame is coming into the switch Store and forward a switch using store and forward saves the entire frame to the buffer and checks it for CRC errors or other problems before sending If the frame has an error it is discarded Otherwise the switch looks up the MAC address and sends the frame on to the destination node A switch is a multi port device that filters and NXTENSION USER MANUAL DOCUMENT REVISION 150305 PAGE 18 Ether LS Sound BUILDING ETHERSOUND NETWORKS forwards data between network devices Unlike a standard repeater hub a switch is able to read the destination address of each frame and then forward it to the correct port This intelligence in the switch means that a device receives only those frames addressed to it Many switches combine the two methods using cut through until a certain error level is reached and then changing over to store and forward Error free Cut through Very few switches are strictly cut through since this provides no error correction Some switches provide a function called broadcast storm in order to
22. r cable types may US LISTED Audio Equipment 10 FC degrade EMC performances IMPORTANT SAFETY INSTRUCTIONS 1 Read these instructions 2 Keep these instructions 3 Heed all warnings 4 Follow all instructions 5 Do not use this apparatus near water 6 Clean only with dry cloth 7 Do not block any ventilation openings Install in accordance with the manufacturer s instructions 8 Do not install near any heat sources such as radiators heat registers stoves or other apparatus including amplifiers that produce heat 9 Do not defeat the safety purpose of the polarized or grounding type plug A polarized plug has two blades with one wider than the other A grounding type plug has two blades and a third grounding prong The wide blade or the third prong are provided for your safety If the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet US market 10 Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparatus 11 Only use attachments accessories specified by the manufacturer 13 Unplug this apparatus during lightning storms or when unused for long periods of time 14 Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way such as power supply cord or plug is damaged liquid has been spi
23. s 15 mar 05 The software that you are going to install is the result of two months of field optimization However it s status is still a PRE release status and it contains still some minor bugs amp features that have not been fixed yet and which may be described as working in the following pages Please check our website www nexo sa com periodically for updates Please report bugs and feature requests to technical nexo fr ESmonitor Software Input VU meters don t indicate red when clipping The orange zone of the vu meter is not at 12dB but earlier Amplifier clipping is not represented on output VU meter Changing setup C amp F key combination for accessing different cabinet families is not yet implemented The software will issue a warning that you are changing family instead Protection monitoring is not implemented Firmware update the network is not implemented Global MUTE does not un mute Restore default button does not work lock button does not work SAVE RECALL function is not implemented We are sorry for any inconvenient the above list may cause We are expecting to solve those points in the very near future Note THE ETHERSOUND DIGITAL OUTPUTS OF THE NX242 ARE CURRENTLY DISABLED AS PROPERLY CONFIGURED ETHERSOUND AMPLIFIERS DO NOT YET EXIST NXTENSION USER MANUAL DOCUMENT REVISION 150305 PAGE 3 KNOWN BUGS amp SOFTWARE ISSUES 15 MAR 05 TABLE OF CONTENT I
24. s information though the frames headers have to be investigated in detail and need an IP header which is not the case when EtherSound is based on the Ethernet Layer 2 protocol Some switches provide functionalities of the so called SPANNING TREE PROTOCOL for inter switch communication and network management The EtherSound protocol is NOT COMPATIBLE with the Spanning Tree Protocol Wireless LAN A local area network that transmits over the air typically but not exclusively in an unlicensed frequency or among others infrared line of sight Wireless access points base stations are connected to an Ethernet hub or server and transmit a radio frequency that can penetrate walls and other non metal barriers Roaming users can be handed off from one access point to another like for example in a cellular phone system Wireless LANs are not suitable for EtherSound networks due to significant bandwidth limitations NXTENSION USER MANUAL DOCUMENT REVISION 150305 PAGE 19 BUILDING ETHERSOUND NETWORKS ETHERNET CABLES Ether Sound WE Cables used within the EtherSound network are straight cables The cable used to connect the PC to the primary master is a crossover cable The following paragraphs describe the main cable types used Among them you will find descriptions of cables listed for reasons of completeness but that are not suited for EtherSound networks ThickNet ThickWire ThickNet 10Base5 E
25. thernet is a thick bulky coaxial cable It is generally used to create large backbones A network backbone connects many smaller network segments into one large LAN ThickNet can support many nodes in a bus topology the segment can be quite long Thin Coax Thin coax 10Base2 Ethernet offers many of ThickNet s advantages for bus topology but it is less expensive and easier to install Thin coax coaxial cable is significantly thinner and more flexible than ThickWire but it supports only 30 nodes With these restrictions thin coax can still be used to create backbones but is rather used to design small networks Twisted Pair Unshielded twisted pair UTP is similar to the telephone cable that may already be installed in your building and available for network use There are several grades of UTP cables each higher grade offering better performance Level 1 and Level 2 cables are the lowest grades and least expensive ones designed primarily for low speed and voice transmissions less than 5Mbps They should not be used in the design of 10BaseT networks Level 3 and Level 4 cables are very common for current 10BaseT configurations Level 3 cable can support speeds of up to 16Mbps 32Mbps in full duplex Level 4 up to 20Mbps 40Mbps in full duplex All these cables use RJ45 connectors In order to maintain the electromagnetic performance and diminish the number of possible errors DO NOT USE unshielded twisted paris CAT5 5e 6 7
26. ting the firmware of the NX242 and the ESmonitor software to control the NX242 this manual NXTENSION USER MANUAL DOCUMENT REVISION 150305 PAGE 5 HARDWARE INSTALLATION Hardware Installation The card contains sensitive electric components which can be easily damaged by static electricity so the card should be left in its original packing until it is installed Before touching the card make sure that you discharge yourself of static electricity Ideally you should wear a grounded anti static wrist strap when servicing electronic units As a minimum make sure your body is touching the metal frame of the NX242 before removing the NXtension ES4 from its anti static package NOTE the NXtension Expander Board with the EtherSound extension MUST only be installed in a NX242 Digital TDcontroller 1 Remove the top panel of the NX242 11 screws 2 Remove the blank panel located on the back panel 2 screws DO NOT USE THESE SCREWS WITH THE NXtension card AS THEY ARE TOO LONG AND WILL DAMAGE THE PCB 3 Remove the 7 jumpers located on the header CN5001 The positions of the jumpers are illustrated below in case you need to remove the board and run the NX242 without the expander board fitted s le e a 3 j NXTENSION USER MANUAL DOCUMENT REVISION 150305 PAGE 6 HARDWARE INSTALLATION 4 Insert the NXtension Expander Board in the NX242 by sliding the upper left corner of the NXtension Expander Board under the corner of the re
27. unication between devices by inserting formatted EtherSound sub packets into standard Ethernet frames Audio channel synchronization is based on valid EtherSound frame arrival Each frame is transmitted at a defined sampling frequency 44 1 or 48kHz NXTENSION USER MANUAL DOCUMENT REVISION 150305 PAGE 16 BUILDING ETHERSOUND NETWORKS Analog and digital filters ensure clock recovery and a minimum of jitter Nevertheless network equipment can introduce jitter that inhibits filter operation and sample extraction from the EtherSound frame causes sample loss and degrades audio performance EtherSound network topologies EtherSound devices may be daisy chained or use a Star architecture in this case switches must be used or a combination of both Daisy Chain NXTENSION USER MANUAL DOCUMENT REVISION 150305 PAGE 17 BUILDING ETHERSOUND NETWORKS Mixed Daisy Chain amp Star Configuration Ethernet Additionnal hardware Ether Sound Hubs A hub also known as repeater is a central connection point for computers on a star topology based network Any data it receives is broadcasted to all ports and then only the computer that is listening for the data actually receives and processes the transmission Hubs are the unintelligent relatives of switches Due to their internal architecture repeater hubs MUST NOT be used in EtherSound networks Switches The term Ethernet Switch is now used for multiple p
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