User Manual - IRT Communications
Contents
1. besides the module identification parameters such as alarm states inputs and controls etc are communicated to the CDM xxxx agent via a data bus on the rear of the frame Thus the CDM xxxx collects information on what is loaded within the frame what positions they occupy and their current status for communication to the NMS when the NMS sends a request for information In the event of a major alarm from any of the SNMP compatible modules or power supplies a trap is automatically sent by the CDM xxxx agent to the NMS without any prompting by the NMS This alerts the operator to any fault conditions that may exist that need immediate attention D FRU 4000 110 240 V 50 60 Hz FRAME 0 7 A max IRT RS232 Ethernet AS3260 approval no CS6346N Ass no 804692 O Oo IRT SNMP Connections IRT modules fitted f CDM xxxx with SMU 4000 PSU s IRT SNMP Frame Ethemet Cable Ethernet Cable IRT modules fitted with SMU 4000 IRT SNMP Frame Ethernet Cable IRT SNMP Setup www irtelectronics com Page 12 of 14 4440 DAC_ib Revi doc DAC 4440 Instruction Book Revision 1 DAC 4440 SNMP Functions With the DAC 4440 installed in an IRT 4000 series frame with SNMP capability the DAC 4440 can be configured and interrogated by an SNMP Network Management System NMS The following SNMP functions are capable of being configured and monitored by an NMS aesinput An indication2. and when it is not present notEnabled 1 enabled 2 irt4440presE1TrapEnable If enabled traps will be sent when a G 703 E1 input is present and when it is not present notEnabled 1 enabled 2 www irtelectronics com Page 13 of 14 4440 DAC_ib Revi doc DAC 4440 Instruction Book Revision 1 Maintenance amp Storage Maintenance No regular maintenance is required Care however should be taken to ensure that all connectors are kept clean and free from contamination of any kind This is especially important in fibre optic equipment where cleanliness of optical connections is critical to performance Storage If the equipment is not to be used for an extended period it is recommended the whole unit be placed in a sealed plastic bag to prevent dust contamination In areas of high humidity a suitably sized bag of silica gel should be included to deter corrosion Where individual circuit cards are stored they should be placed in antistatic bags Proper antistatic procedures should be followed when inserting or removing cards from these bags Warranty amp Service Equipment is covered by a limited warranty period of three years from date of first delivery unless contrary conditions apply under a particular contract of supply For situations when No Fault Found for repairs a minimum charge of 1 hour s labour at IRT s current labour charge rate will apply whether the equipment is within the warranty period or n
3. converts an AES EBU digital audio signal into a non framed 2 Mb G 703 E1 compatible signal The DAC 4440 combines the 20 bit audio data with either C data U data or RS232 data into an output stream at 2 048 Mb s This stream is then output as a standard G 703 HDB3 encoded 750 unframed signal The DAC 4440 also converts a G 703 signal whose content is formatted as per the output of another DAC 4440 to an AES EBU data stream The receiver obtains synchronism with the incoming stream and then separates the audio data from the combined C U or RS232 data The DAC 4440 allows a local reference AES EBU signal to be input for rate synchronization of the output With no reference signal present output rate is automatically set to 48 kHz The system can handle mono or stereo 20 bit AES EBU audio at any rate from 25 KHz to 55 kHz although it is designed for a nominal 48 kHz The system also allows either the Channel C User U or RS232 data to be conveyed Front panel LEDs indicate when an AES EBU signal and RS232 data is present on the transmit side of the DAC 4440 and when a valid 2 048 Mb s G 703 input signal and RS232 data is present and when a valid AES EBU reference signal is applied to the receive side of the DAC 4440 Relay outputs are provided on the rear assembly for remote status indication for when a valid AES EBU or E1 signal is present or invalid SNMP Simple Network Management Protocol remote monitoring is possible when u
4. that the AES input signal is present notPresent 1 present 2 aes48K An indication if the AES input signal is at 48kHz frame rate notPresent 1 present 2 controlSource An indication that auxiliary data is controlled by DIP switch or via SNMP dipSwitch 1 remoteSNMP 2 NOTE DIP switch SW1 6 on DAC 4440 controls this setting auxSource An indication and control of the auxiliary data that is packed in the G 703 E1 userData 1 channelStatus 2 rs232 3 NOTE If DIP switch SW1 6 is OFF DIP switches SW1 1 and SW1 2 on DAC 4440 controls these settings eOne An indication that the G 703 E1 input is present notPresent 1 present 2 aesRef An indication that the AES reference input signal is present notPresent 1 present 2 auxData An indication of the auxiliary data that is received from the input G 703 E1 userData 1 channelStatus 2 rs232 3 irt4440fpgaVersion An indication of the firmware version of the main FPGA in the format x y where x is the major revision number and y is the minor revision number irt4440SoftwareVersion An indication of the software version of the NIOS in the format x z where x is the major revision number and z is the minor revision number irt4440reset Aset with a value of 2 sent to this OID will cause a system reset to occur When queried returns null irt4440presAESTrapEnable If enabled traps will be sent when an AES input is present
5. 03 E1 Input Alarm Outputs RS 232 Data Port Front and rear layouts SNMP What Is It DAC 4440 SNMP Functions Maintenance amp Storage Warranty amp Service Equipment return ODODWMOUOWWAWAWAAN MAU AWN Kab b RR BE bBUW MH O This instruction book applies to units fitted with firmware version gt DAC4440F5VOS5VO Operational Safety WARNING Operation of electronic equipment involves the use of voltages and currents that may be dangerous to human life Note that under certain conditions dangerous potentials may exist in some circuits when power controls are in the OFF position Maintenance personnel should observe all safety regulations Do not make any adjustments inside equipment with power ON unless proper precautions are observed All internal adjustments should only be made by suitably qualified personnel All operational adjustments are available externally without the need for removing covers or use of extender cards www irtelectronics com Page 3 of 14 4440 DAC_ib Revi doc DAC 4440 Instruction Book Revision 1 IRT Eurocard Type DAC 4440 AES 2Mb E1 G 703 Network Interface Adapter General Description DAC 4440 Block Diagram AES gt AES 759 or 1109 75Q or 1109 E1 I P 759 REFERENCE AES gt 75Q or 1400 The DAC 4440 forms a transmitter receiver system which is designed to allow an AES EBU digital audio signal to be distributed via a 2Mb G 703 E1 network The DAC 4440
6. DAC 4440 Instruction Book Revision 1 IR T Electronics Pty Ltd A B N 35 000 832 575 26 Hotham Parade ARTARMON N S W 2064 AUSTRALIA National Phone 02 94393744 Fax 02 9439 7439 International 61 2 9439 3744 61 2 9439 7439 Email sales irtelectronics com Web _www irtelectronics com IRT Eurocard Type DAC 4440 AES 2Mb E1 G 703 Network Interface Adapter Designed and manufactured in Australia IRT can be found on the Internet at http www irtelectronics com www irtelectronics com Page 1 of 14 4440 DAC_ib Revi doc DAC 4440 Instruction Book Revision 1 IRT Eurocard Type DAC 4440 AES 2Mb E1 G 703 Network Interface Adapter Revision History Revision Date By Change Description Applicable to 0 13 10 2010 AL Original Issue Firmware version gt DAC4440F4V0S4V0 1 02 06 2011 AL DIP Switch configuration updated to include alarm Firmware version settings DAC4440F5V0S5VO0O www irtelectronics com Page 2 of 14 4440 DAC_ib_Revi doc DAC 4440 Instruction Book Revision 1 IRT Eurocard Type DAC 4440 AES 2Mb E1 G 703 Network Interface Adapter Instruction Book Table of Contents Section V w va D Revision History Operational Safety General Description Technical Specifications Configuration Link Settings DIP Switch Settings Installation Connections AES Input AES Output AES Reference Input G 703 E1 Output G 7
7. EF DC gt Alarm Output 750 AES f Input 1100 750 Reference r RS232 AES Data Port 1100 RSZOAIRSAES G 703 E1 Input 750 AES ar G 703 E1 Output Output 1100 Page 10 of 14 4440 DAC_ib Revi doc DAC 4440 Instruction Book Revision 1 SNMP What Is It SNMP stands for Simple Network Management Protocol It is an application layer protocol for managing IP Internet Protocol based systems SNMP enables system administrators to manage system performance and to find and solve system problems SNMP runs over UDP User Datagram Protocol which in turn runs over IP Three types of SNMP exist SNMP version 1 SNMPv1 SNMP version 2 SNMPv2 and SNMP version 3 SNMPv3 It is not the intention here to discuss the differences between various versions only to bring attention to the fact that IRT Electronics modules fitted with SNMP capability use SNMPv1 An SNMP managed network consists of three key components Network Management Systems NMS agents and managed devices An NMS is the console through which the network administrator performs network management functions such as monitoring status e g alarm states and remote controlling of a set of managed devices One or more NMSs must exist on any managed network Generally the NMS is a computer running third party SNMP control software There are a number of third party SNMP software applications currently available on the market An NMS polls or commun
8. S digital high quality shielded pair RS 232 9600 baud 2 048 Mb s G 703 75Q unbalanced terminating CCITT G 703 compliant 2 048 Mb s G 703 75Q unbalanced terminating CCITT G 703 compliant AES EBU 750 unbalanced or 1100 balanced 200 mVp p minimum AES3 1992 standard 25kHz to 55kHz gt 500m 750 Belden 8281 gt 200m 1100 AES digital high quality shielded pair AES EBU 750 unbalanced or 1100 balanced AES3 1992 standard Settable for either loss of AES or E1 Open circuit on alarm Settable for either loss of AES or E1 Open circuit on alarm 120 dB lt 88 dB 20Hz to 20kHz 60dB input 20Hz to 20kHz full scale input Fint amp Fout between 25 and 55kHz lt 100 dB 1kHz full scale input Fint amp Fout between 34 and 55kHz 10kHz full scale input Fint amp Fout between 34 and 55kHz lt 94 dB lt 20 ns 0 05 dB 20Hz to 20kHz sample rate of AES EBU input to DAC 4440 sample rate of AES EBU output from DAC 4440 28 Vac CT 14 0 14 or 16 Vdc lt 2 VA 0 50 C ambient BNC Removable screw terminal blocks Suitable for mounting in IRT 19 rack chassis with input output and power connections on the rear panel Grey background silk screened black lettering amp red IRT logo Detachable silk screened PCB with direct mount connectors to Eurocard and external signals 30 mm x 3 Ux 220 mm IRT Eurocard Rear connector Due to our policy of con
9. ible to IRT direct as follows Equipment Service IRT Electronics Pty Ltd 26 Hotham Parade ARTARMON N S W 2064 AUSTRALIA Phone 6129439 3744 Fax 6129439 7439 Email service irtelectronics com www irtelectronics com Page 14 of 14 4440 DAC_ib Revi doc
10. icates with an agent An agent is a network management software module that resides in a managed device An agent has local knowledge of management information and translates that information into a form compatible with SNMP The agent therefore acts as an interface between the NMS and the managed devices The NMS sends a request message and control commands for the managed devices to the agent which in turn sends a response message containing information about the managed devices back to the NMS A managed device contains an SNMP agent and resides on a managed network Managed devices collect and store management information and make this information available to NMSs using SNMP Managed device agent variables are organised in a tree structure known as a Management Information Base MIB Within the MIB are parameters pertaining to the managed device An Object Identifier OID number within the MIB defines the managed device type This is a unique number specific to the model of managed device Other information relating to the device is also stored information such as alarm states controllable settings etc The MIB tree is organised in such a way that there will be no two MIB files with conflicting placements Normally an NMS polls an agent for information relating to the MIB in a managed device to be sent back to the NMS When certain conditions are met within the MIB such as major alarm conditions for example the agent automatically se
11. nds what is known as a trap to the NMS without any prompting from the NMS This allows automatic notification of a predetermined event SNMP Block Diagram SNMP Agent __ p SNMP Agent Protocol Engine IP SNMP Agent gt SNMP Agent Network Protocol Engine SNMP Agent _ gt SNMP Agent Protocol Engine www irtelectronics com Page 11 of 14 4440 DAC_ib Revi doc DAC 4440 Instruction Book Revision 1 SNMP with IRT Products IRT Electronics currently employs SNMPv1 with its SNMP capable frames The frame acts as an agent when fitted with a CDM xxxx module This module has its own designated slot next to the power supply so as to not affect the number of modules that the frame will take Communication between the NMS the frame and its loaded modules are via this CDM xxxx module Note that the NMS software is third party and not supplied by IRT Electronics Ethernet connection for SNMP operation is via an RJ45 connector on the rear of the frame below the mains inlet Ethernet rate runs at either 10 baseT or 100 baseT Frame parameters such as Name Address and Location are set via an RS232 interface a D9 connector on the rear of the frame below the mains inlet A software terminal emulator such as Tera Term or HyperTerminal is used for setting and reading the parameters of the frame IRT modules that are SNMP compatible need a plug in SMU 4000 module with a program relevant to the module that it is plugged into Depending on the module
12. nput When operating the DAC 4440 as an E1 to AES network interface adapter the default output rate is automatically set at 48 kHz If a different AES rate is required it is possible to input a reference AES signal at the desired rate The AES reference input connectors marked AES IN can either be either a 75 Q unbalanced terminating or 110 Q balanced terminating as determined by the links LK5 and LK6 settings as described in the Configuration section of this handbook The unbalanced 75 Q AES connection is via a BNC connector and requires good quality 75 Q coaxial cable such as Belden 8281 The balanced 110 0 AES connection is via a 3 pin Phoenix style connector and requires good quality twisted pair audio cable www irtelectronics com Page 8 of 14 4440 DAC_ib Revi doc DAC 4440 Instruction Book Revision 1 G 703 E1 Output When operating the DAC 4440 as an AES to E1 network interface adapter the G 703 E1 output connector marked G 703 OUT is via a 75 0 unbalanced terminating BNC connector and requires the use of good quality 75 0 coaxial cable such as Belden 8281 G 703 E1 Input When operating the DAC 4440 as an E1 to AES network interface adapter the G 703 E1 input connector marked G 703 IN is via a 75 0 unbalanced terminating BNC connector and requires the use of good quality 75 0 coaxial cable such as Belden 8281 NOTE The DAC 4440 can be used as an AES to E1 network interface adapter Transmitter or an E1 to AES netw
13. ol SW1 7 Not used SW1 8 OFF Enable major and minor SNMP alarms to the frame Agent CDM card ON Disable major and minor SNMP alarms to the frame Agent CDM card SW2 1 to SW2 8 Not used NOTE 3 U data is User application data C data is Channel Status Information 5 When using TRAPS via SNMP depending on how system is set up in order to avoid double reporting of alarms via the DAC 4440 card itself and the CDM card SNMP Agent of the frame major and minor SNMP alarms that are reported to the CDM card of the frame can be disabled IN www irtelectronics com Page 7 of 14 4440 DAC_ib Revi doc DAC 4440 Instruction Book Revision 1 Installation Pre installation Handling This equipment may contain or be connected to static sensitive devices and proper static free handling precautions should be observed Where individual circuit cards are stored they should be placed in antistatic bags Proper antistatic procedures should be followed when inserting or removing cards from these bags Power AC mains supply Ensure that operating voltage of unit and local supply voltage match and that correct rating fuse is installed for local supply DC supply Ensure that the correct polarity is observed and that DC supply voltage is maintained within the operating range specified Earthing The earth path is dependent on the type of frame selected In every case particular care should be taken to ensure that the frame i
14. ork interface adapter Receiver in a uni directional link arrangement or as both an AES to E1 and E1 to AES network interface adapter at the same time Transceiver in a bi directional link arrangement Alarm Outputs Major and Minor rear assembly alarm outputs are via a 4 pin phoenix style connector and switch from ground to open circuit on alarm See Configuration section of this manual for setting of alarm conditions Alarm connections are as follows 1 om Ground o Ground o MAJOR 4 o MINOR RS 232 Data Port The RS 232 data port is via a 10 pin HE14 style of header Pins 1 2 and 7 are connected together on the PCB Pins 9 and 10 are both earthed Pin 3 is the RS 232 receive data RXD connection Pin 5 is the RS 232 transmit data TXD connection Data rates may be up to 9600 baud Note that unless the DAC 4440 is being run in a bi directional link arrangement data transfer is uni directional only i e there is no direct data return path Ww N For connection to a standard RS 232 9 pin D connector wire as per the diagram below Ribbon Cable www irtelectronics com Page 9 of 14 4440 DAC_ib Revi doc DAC 4440 Instruction Book Front amp rear panel connector diagrams Revision 1 The following front panel and rear assembly drawings are not to scale and are intended to show connection order and approximate layout only www irtelectronics com DAC 4440 IRT AES IN DATA G 703 6 DATA AES R
15. ot Equipment warranty is limited to faults attributable to defects in original design or manufacture Warranty on components shall be extended by IRT only to the extent obtainable from the component supplier Equipment return Before arranging service ensure that the fault is in the unit to be serviced and not in associated equipment If possible confirm this by substitution Before returning equipment contact should be made with IRT or your local agent to determine whether the equipment can be serviced in the field or should be returned for repair The equipment should be properly packed for return observing antistatic procedures The following information should accompany the unit to be returned A fault report should be included indicating the nature of the fault The operating conditions under which the fault initially occurred Any additional information which may be of assistance in fault location and remedy A contact name and telephone and fax numbers Details of payment method for items not covered by warranty Full return address For situations when No Fault Found for repairs a minimum charge of 1 hour s labour will apply whether the equipment is within the warranty period or not Contact IRT for current hourly rate So WB NS Please note that all freight charges are the responsibility of the customer The equipment should be returned to the agent who originally supplied the equipment or where this is not poss
16. s connected to earth for safety reasons See frame manual for details Signal earth For safety reasons a connection is made between signal earth and chassis earth No attempt should be made to break this connection Installation in frame or chassis See details in separate manual for selected frame type Connections AES Input When operating the DAC 4440 as an AES to E1 network interface adapter the AES input connectors marked AES I O can either be either a 75 Q unbalanced terminating or 110 Q balanced terminating as determined by the links LK1 and LK2 settings as described in the Configuration section of this handbook The unbalanced 75 Q AES connection is via a BNC connector and requires good quality 75 Q coaxial cable such as Belden 8281 The balanced 110 0 AES connection is via a 3 pin Phoenix style connector and requires good quality twisted pair audio cable AES Output When operating the DAC 4440 as an E1 to AES network interface adapter the AES output connectors marked AES OUT can either be either a 75 Q unbalanced terminating or 110 Q balanced terminating as determined by the links LK5 and LK6 settings as described in the Configuration section of this handbook The unbalanced 75 Q AES connection is via a BNC connector and requires good quality 75 0 coaxial cable such as Belden 8281 The balanced 110 AES connection is via a 3 pin Phoenix style connector and requires good quality twisted pair audio cable AES Reference I
17. sed in conjunction with an IRT frame fitted with SNMP capability Standard features Conversion of AES EBU audio to 2Mb s G 703 for transport via telecom circuits Choice of 750 unbalanced or 1100 balanced AES EBU line connections 48 kHz 20 bit default sample rate 25 55 kHz rates supported Optional external AES EBU reference input for rates other than 48 kHz Allows Channel C User U or RS232 data to be conveyed Bi direction operation possible with independent transmit and receive functions on the one card www irtelectronics com Page 4 of 14 4440 DAC_ib Revi doc DAC 4440 Instruction Book AES Input Input Level Format Sample Rate Input Cable Length Data Input Type Rate G 703 Output Impedance Format G 703 Input Impedance Format AES Reference Input Input Level Format Sample Rate Input Cable Length AES Output Format Alarms MAJOR MINOR System Performance End to End Dynamic Range THD N Output signal rise and fall times Frequency Response 1 Fin 2 Fout Note Other Power requirement per unit Temperature range Connectors Unbalanced Balanced Mechanical Finish Front panel Rear assembly Dimensions Accessories supplied with module Revision 1 Technical Specifications IRT Eurocard module Type DAC 4440 AES EBU 750 unbalanced or 1100 balanced 200 mVp p minimum AES3 1992 standard 25kHz to 55kHz gt 500m 750 Belden 8281 gt 200 1100 AE
18. tinuing development these specifications are subject to change without notice www irtelectronics com Page 5 of 14 4440 DAC_ib_Revi doc DAC 4440 Instruction Book Revision 1 Configuration Link Settings AES Input Unbalanced 75 Q AES Input Balanced 110 Q LK1 LK1 N N c0 gt 0 0 AES Reference Input Unbalanced 75 Q AES Reference Input Balanced 110 Q AES Output Unbalanced 75 Q AES Output Balanced 110 Q 6 66 ee 6 LK4 LK3 LK4 LK3 LK6 LK5 LK6 LK5 www irtelectronics com Page 6 of 14 4440 DAC_ib Revi doc DAC 4440 Instruction Book Revision 1 DIP Switch Settings DIP penne DIP sungana SW2 SWI 1234567 8 1234567 8 SW1 1 OFF Transmit U data dependent on SW1 2 setting ON Transmit C data dependent on SW1 2 setting SW1 2 OFF Transmit either C or U data dependent on SW1 1 setting ON Transmit RS232 data SW1 3 SW1 4 SW1 5 Alarm Setting OFF OFF X No AES alarm amp no E1 alarm OFF ON OFF No AES alarm amp E1 as Major urgent alarm OFF ON ON No AES alarm amp E1 as Minor non urgent alarm ON ON ON AES as Major urgent alarm amp E1 as Minor non urgent alarm ON ON OFF AES as Minor non urgent alarm amp E1 as Major urgent alarm ON OFF ON AES as Major urgent alarm amp no E1 alarm ON OFF OFF AES as Minor non urgent alarm amp no E1 alarm SW1 6 OFF DIP switch control ON SNMP contr
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