User Manual - IRT Communications
Contents
1. HD SD only or reclocker bypass modes of operation The serial digital signal connections are made to the BNC connectors on the relevant rear assembly of the DDT 4634 and DDR 4634 labelled IN 1 to IN 4 and OUT 1 to OUT 4 respectively Optical Connections Optical connections are made to the quad optical adapter mounted on a bracket at the rear of the module Care must be taken to provide a clean surface on the optical connectors and in inserting the plug on the external fibre to prevent damage to the alignment ferrule of the panel adapter Type of fibre used must be single mode type The standard configuration for the DDT 4634 and DDR 4634 have four separate optical LC PC type of connectors The order of which corresponds to the same order from top to bottom of the signal connections If the DDT 4634 and DDR 4634 are fitted with the optional four channel course wave division multiplexer CWDM only one common optical connector is provided with all four transmit or receive functions occurring on a single fibre The standard optical connector type is SC PC Note that for path lengths lt 9 dB for APD detectors or lt 3 dB for PIN detectors an optical attenuator must be used to avoid over driving the DDR 4634 optical receivers IRT Electronics Pty Ltd www irtelectronics com Page 8 of 18 Revision 00 DDT 4634 amp DDR 4634 Alarm Connections External alarm contact connections are made to the 4 pin phoenix style connector on the re2. walk via the NMS the reported identifier in the slot position list is reported as being irtDDx4634 for both the DDT 4634 and DDR 4634 where the x signifies either the T or the R in the DDT or DDR part of the product number The specific product type and details are revealed when expanding this identifier As both the DDT 4634 and DDR 4634 SNMP functions are the same in structure a combined explanation of the SNMP functions for both are given below Note that for SNMP control DIP switch SW1 7 must be set to ON on either the DDT 4634 or DDR 4634 being controlled sysDescr A description of the unit DDT 4634 4 Channel Optical Transmitter DDR 4634 4 Channel Optical Receiver sysObjectID irtDDT4634 irtDDR4634 sysUpTime A indication of how long the unit has been running since its last power on or reset in Days Hours Minutes and Seconds sysName A 16 character writable system name Default set name DDT 4634 DDR 4634 irt463xType An indication of the device type 1 ddt4634 Transmitter 2 ddr 4634 Receiver alarms An indication of the alarm type 1 noAlarms No alarms present 2 nonUrgentAlarms All four DDT 4634 signal inputs are missing invalid or not enabled All four DDR 4634 signal outputs are missing invalid or not enabled OR an at least one opticallow condition has been detected 3 urgentAlarms At least one optical laser of DDT 4634 is faulty At least one optical detector of D
3. 75 Q BNC connectors IN 1 to IN 4 on the rear assembly of the DDT 4634 fibre optic transmitter Front panel LEDs indicates the presence of a valid input signal that corresponds to the channel s set data rate If the input does not match that of the set data rate for example if the channel s data rate has been set to SD only and it is being fed with another rated signal such as HD then the corresponding LED will flash and the signal to the optical driver will be muted This is also true of the DDR 4634 when it detects a channel signal on its optical input In this example all four signals are present but CH 1 does not match the channel s set data rate or has been disabled via SNMP see below With the data rate set for bypassed mode the reclocker is bypassed allowing signals other than 3G SDI HD SDI or SD SDI to pass through If the laser is set for permanent operation on loss of a valid input signal a 54MHz oscillator is switched into the optical output so that the optical receiver still recognizes the optical link as being valid This 54MHz signal does not affect the signal reclocking detector circuitry of the receiver which is used in signal presence alarm indication on detection or absence of a valid 3G HD or SD signal Through the use of SNMP see separate section of manual it is possible to remotely monitor and control various functions not available via the local DIP switch control Such as for example it is possible to indiv
4. a predetermined event SNMP Block Diagram SNMP Agent Protocol Engine SNMP Agent IP SNMP Agent SNMP Agent Protocol Engine Network SNMP Agent Protocol Engine SNMP Agent IRT Electronics Pty Ltd www irtelectronics com Page 14 of 18 Revision 00 DDT 4634 8 DDR 4634 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 may need an optional plug in SNMP module with a program relevant to the module that it is plugged into Depending on the module besides the module identification parameters such as alarm states inputs and controls etc are com
5. allows all four channels to be independently controlled IRT Electronics Pty Ltd www irtelectronics com Page 13 of 18 Revision 00 DDT 4634 8 DDR 4634 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 NMS s 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 communicates with an agent An agent is a network management software module that resides in a managed device An agen
6. principally for use as four independent serial data fibre optic transmission links for 3G SDI HD SDI or SD SDI applications conforming to SMPTE standards 424M 292M and 259M C using 9 125 um single mode fibre In addition the link may be used for ASI transport streams for use with MPEG compressed video streams or other 270 Mb s type data The transmitter features automatic input cable equalisation and comes standard with 1510nm 1530nm 1550nm and 1570nm lasers Other wavelength combinations are available on request The receiver uses a choice of either a PIN photodiode or APD detectors with signal conditioning and reclocking circuits The data rates are automatically set to match the 3G SDI HD SDI or SD SDI ASI rates dependent on the actual input data rates to the transmitter The transmitter and receiver modules are compatible with IRT s single channel fibre cards for use as four independent fibre paths starting from or coming to a single location LED indicators are provided on both modules for digital signal presence and power Optionally a CWDM optical combiner can be fitted to allow for combined use on a single fibre SNMP Simple Network Management Protocol is available for remote monitoring when used in conjunction with an IRT frame fitted with SNMP capability Standard features 4 independent fibre links Transports 3G SDI HD SDI SD SDI or ASI signal rates Path lengths up to 30 dB optical path loss using 9 125um single
7. set to 3G SDI HD SDI or SD SDI ASI rates 2 sdiHD SD ASI only Reclocker set to HD SDI 1 485 Gb s and SD SDI ASI 270 Mb s rates only 3 sdiSD ASI only Reclocker set to SD SDI ASI 270 Mb s rate only 4 bypassed Reclocker bypassed to allow other signal rates through channelEnable An indication of how and whether the channel is enabled Relates to inputs of DDT 4634 and outputs of the DDR 4634 1 notEnabled Disable the DDT 4634 input DDR 4634 output electrical signal To enable select either 2 or 3 2 enabledActive Input output electrical signal is both Enabled and Active 3 enabledMuted Electrical signal is Enabled but the input to the laser is Muted when no signal or an invalid signal is present to the DDT 4634 Electrical signal is Enabled but the output is Muted when no signal or an invalid signal is present within the received optical input to the DDR 4634 channelAlias A16 character maximum Alias name for the signal can be read and set blankLine A line spacing within the table to make reading the table easier channelKeepAlive Relates to the DDT 4634 only A substitution of a 54 MHz signal in place of no input or invalid signal to keep the optical link active at the receiver end 1 on Keep Alive signal active 2 off Keep Alive signal not active 3 na Not Applicable as reported by the DDR 4634 chanPresTrapEnable Enable or Disable Traps to be sent when the electrical signal conditi
8. 4 Front amp rear panel connector diagrams DDT 4634 4 DDT 4634 IT CH1 CH2 CH3 CH4 Fibre O P 1 Fibre O P 2 Optically Muxed Fibre O P 3 Fibre O P Fibre O P 4 Quad Single SC PC Fibre LC PC Fibres CWDM Version Standard Option IRT Electronics Pty Ltd www irtelectronics com Page 10 of 18 Revision 00 DDT 4634 amp DDR 4634 DDR 4634 Q DDR 4634 IRT Fibre I P 1 E Fibre I P 2 Optically Muxed Fibre I P 4 Quad Single SC PC Fibre LC PC Fibres CWDM Version Standard Option IRT Electronics Pty Ltd www irtelectronics com Page 11 of 18 Revision 00 DDT 4634 8 DDR 4634 OPERATION The DDT 4634 is a quad electrical to optical transmitter with four separate laser drivers on the one card Each laser driver is independent in its operation from the other three and is fed with its own independent single channel 3G SDI HD SDI or SD SDI or ASI electrical signal The standard laser wavelengths are 1510 nm corresponding to input 1 1530 nm corresponding to input 2 1550 nm corresponding to input 3 and 1570 nm corresponding to input 4 which allow the outputs to be optically multiplexed through a course wave division multiplexer CWDM if required Likewise the DDR 4634 is a quad optical to electrical receiver with four separate optical detectors on the one card Each optical detector is independent in its operation from the other three and outputs its own independent singl
9. DDT 4634 amp DDR 4634 Int ELECTRONICS User Manual IRT Electronics Pty Ltd www irtelectronics com Revision 00 QUAD 3G HD SD SDI ASI FIBRE OPTIC LINK Revision History DDT 4634 8 DDR 4634 Revision Date By Change Description Applicable to 00 03 06 2013 AL Original Issue Both units fitted with firmware version gt 1 1 IRT Electronics Pty Ltd www irtelectronics com Page 2 of 18 Revision 00 USER MANUAL Table of Contents Section Revision History Operational Safety General Description Technical Specifications Configuration User DIP switch settings DDT 4634 DDR 4634 Installation Signal Connections Optical Connections Alarm Connections DDT 4634 DDR 4634 Front and rear layouts DDT 4634 DDR 4634 Operation Figure 1 Attenuation versus wavelength SD only HD SD only modes SNMP What Is It DDT 4634 and DDR 4634 SNMP Functions Maintenance amp Storage Warranty amp Service DDT 4634 amp DDR 4634 v w ga o W6wW0000 Y Y Y Y DU PN PBbBRreRRBR PR PR bp 0 0D0pwwUNnR aOO This instruction book applies to both units fitted with firmware version gt 1 1 IRT Electronics Pty Ltd www irtelectronics com Page 3 of 18 Revision 00 DDT 4634 8 DDR 4634 OPERATIONAL SAFETY WARNING Operation of electronic equipment involves the use of voltages and currents th
10. DR 4634 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 is 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 Signal Connections The default settings of the DDT 4634 and DDR 4634 are to automatically operate at either 2 97 Gb s 3G SDI 1 485 Gb s HD SDI or 270 Mb s SD SDI ASI signals and do not require any adjustment prior to use with the exception of the DIP switch options described in the Configuration section of this manual that also allow SD only
11. DR 4634 has lost its optical input 4 urgAndNonUrgentAlarms Both urgent alarm conditions are present ctriMode The current configuration setting s source as determined by DIP switch SW1 7 position 1 pcbSwitches Configuration set locally via on board DIP switches SW1 7 OFF 2 remoteSNMP Configuration set remotely via SNMP SW1 7 ON 3 lockToRemoteSNMP Lock module to SNMP control overrides SW1 7 position Note that SW1 7 must be initially ON to be able to set to Lock to SNMP mode To release send either a 1 or 2 channellnfoTable Information and control of the DDT 4634 and DDR 4634 in table form channellnfoEntry Information and control of the individual channels in the table channelNumber An indication of the individual channel number corresponding to the inputs of the DDT 4634 and outputs of the DDR 4634 1 2 3 and 4 inputStatus An indication of the signal rate present 1 unknownPresent Signal rate is not one of the 3G HD SD SDI ASI rates 2 sdiSD ASI Present Signal is either an SD SDI or ASI signal or at 270 Mb s rate 3 sdiHD Present Signal is either an HD SDI signal or at 1 485 Gb s rate 4 sdi3G Present Signal is either a 3G SDI signal or at 2 97 Gb s rate 5 notPresent No signal is present IRT Electronics Pty Ltd www irtelectronics com Page 16 of 18 Revision 00 DDT 4634 8 DDR 4634 dataRateSet Control of the signal data rate setting 1 sdi3G HD SD ASI Reclocker
12. ar assembly On an alarm condition relay contacts go open circuit that is switch open with respect to ground The connections being 1 GND 2 GND 3 Major Alarm 4 Minor Alarm The alarms reported are designated as either Major or Minor DDT 4634 A Major alarm is designated as a laser fail alarm on any of the four fitted lasers A Minor alarm is designated as all four signal inputs are missing invalid or not enabled DDR 4634 A Major alarm is designated as an optical input fail on any of the four fitted detectors A Minor alarm is designated as all four signal outputs are missing invalid or not enabled OR at least one optic input level has been deemed to be approaching or has gone below its threshold limit NOTE 6 Itis possible via SNMP to disable individual channels on both the DDT 4634 and DDR 4634 7 This is reported as an opticallow condition via SNMP Note that if a received electrical signal is present on this channel in this situation it may be possible that the signal may contain errors if the optical signal level has actually gone below its minimum reliable input level before the output is muted whence an opticalFail situation would be reported Therefore accuracy of the received electrical signal should be confirmed if a Minor alarm or opticalLow condition is reported by the DDR 4634 IRT Electronics Pty Ltd www irtelectronics com Page 9 of 18 Revision 00 DDT 4634 amp DDR 463
13. at 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 Optical Safety The light emitted from the LASER diode used in this system is invisible and may be harmful to the human eye Avoid looking directly into the fibre optic cable or connectors or into the collimated beam along their axis when the device is in operation Operating the LASER diode outside of its maximum ratings may cause device failure or a safety hazard Invisible LASER radiation Avoid direct exposure to beam Peak power 2 mW Wavelength 1270 1610nm Class 1 LASER Product IRT Electronics Pty Ltd www irtelectronics com Page 4 of 18 Revision 00 DDT 4634 8 DDR 4634 GENERAL DESCRIPTION BLOCK DIAGRAM DDT 4634 DDR 4634 SIGNAL PATH 3G SDI 3G SDI HD SDI HD SDI SD SDI SD SDI ASI ASI Fibre Link 9 27 dB path loss at 3G gt 30dB at HD and SD NOTE Fitted with APD detector 3 18dB when fitted with PIN detector The IRT DDT 4634 and DDR 4634 are quad transmit and receive modules designed
14. e channel 3G SDI HD SDI or SD SDI or ASI electrical signal The detector types available are either APD standard or PIN The APD detector allows a greater optical path loss which allows a farther distance optical path compared to PIN detectors However for optical path lengths less than 9dB for APD detectors or 3dB for PIN detectors optical attenuators are required so as to not overload the detectors else damage to the detectors themselves may occur Both the DDT 4634 and DDR 4634 are fully operable with previous IRT single channel 3G HD or SD fibre links Four optical LC PC connectors standard are directly connected to the main card via the rear of the unit The order of the optical connectors correspond to the same order as the electrical BNC connectors as labelled on the rear assembly Optionally a four channel course wave division multiplexer CWDM can be directly fitted to both the DDT 4634 and DDR 4634 to allow simultaneous transmission reception of optical signals on a single fibre The default settings of the DDT 4634 and DDR 4634 are automatically set to operate at either 2 97 Gb s 3G SDI 1 485 Gb s HD SDI or 270 Mb s SD SDI or ASI and do not require any adjustments prior to use However either DIP switch or SNMP settings allow the units to be set for SD only SD HD only or reclocker bypass modes Up to four 2 97 Gb s 3G SDI signal 1 485 Gb s HD SDI signal or 270 Mb s type of signals such as ASI or SDI are connected to
15. e warranty period or not 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 pol OOP BP GaN gt Please note that all freight charges are the responsibility of the customer The equipment should be returned to the agent who originally supplied the equip
16. idually disable the channels on either the DDT 4634 and DDR 4634 locking out an end user s functionality should this be desired When a channel has been disabled should an electrical signal be present the corresponding channel LED will flash not to be confused with situation where the data rate does not match the set data rate as described above IRT Electronics Pty Ltd www irtelectronics com Page 12 of 18 Revision 00 DDT 4634 amp DDR 4634 gt IR absorption Attenuation dB km Rayleigh scattering 1 N 800 1000 1200 1400 1600 Wavelength nm gt Figure 1 Attenuation versus wavelength Attenuation in the fibre is due to Absorption and Scattering SD only HD SD only modes Note that it is possible to set the units channels to operate as an SD rate only or HD SD rate only mode by use of the DIP switch configuration controls However in situations where it is desired that the end user does not have control over the intended setup it is possible to set the unit to the desired rate via SNMP control and to lock it to SNMP only control so that the end user cannot override the setup parameters by use of the DIP switches This is intended for situations where a link has been leased to a customer who is only paying for a certain data rate path such as SD only or HD SD only as opposed to the full 3G rate The same is true for disabling of channels Note that DIP switch control sets all channel data rates the same whereas SNMP
17. is kept alive when no valid signal is present Disable Keep Alive signal on Channel 2 Laser only active when a valid signal is present Enable Keep Alive signal on Channel 3 Laser is kept alive when no valid signal is present Disable Keep Alive signal on Channel 3 Laser only active when a valid signal is present Enable Keep Alive signal on Channel 4 Laser is kept alive when no valid signal is present Disable Keep Alive signal on Channel 4 Laser only active when a valid signal is present DIP switch control SNMP control Enable major and minor SNMP alarms to the frame Agent CDM card Disable major and minor SNMP alarms to the frame Agent CDM card DIP Switch Tx Input Rate Sw1 1 swi 2 3G HD SD Auto detect OFF OFF SD only ON OFF HD and SD only OFF ON Bypass Reclocker ON ON Not Used Not Used Not Used Not Used DIP switch control SNMP control Enable major and minor SNMP alarms to the frame Agent CDM card Disable major and minor SNMP alarms to the frame Agent CDM card When using TRAPS via SNMP depending on how system is set up in order to avoid double reporting of alarms via the DDT 4634 or DDR 4634 cards 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 IRT Electronics Pty Ltd www irtelectronics com Page 7 of 18 Revision 00 DDT 4634 8 D
18. mat x y where x is the major revision number and y the minor reset Unit reset control 1 normal when queried reset control returns a normal state 2 reset system reset causes sysUpTime counter to reset IRT Electronics Pty Ltd www irtelectronics com Page 17 of 18 Revision 00 DDT 4634 8 DDR 4634 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 th
19. ment or where this is not possible to IRT directly Details of IRT s direct address can be found at IRT Electronics website Web address www irtelectronics com Email sales irtelectronics com IRT Electronics Pty Ltd www irtelectronics com Page 18 of 18 Revision 00
20. mode fibre LED indicators and external alarm contacts Transmitter Tx and receiver Rx can be used separately with 4 independent single channel fibre Rx and Tx cards Remote monitoring via SNMP Optional on board CWDM optical combiner for use on a single common fibre NOTE 1 27dB path loss at 3G Typically gt 30dB at HD and SD Fitted with APD detector 2 With CWDM option fitted for combined use on a single fibre optical path loss is reduced by approximately 2 5dB IRT Electronics Pty Ltd www irtelectronics com Page 5 of 18 Revision 00 TECHNICAL SPECIFICATIONS DDT 4634 Input serial data signal Input impedance Input return loss Automatic cable compensation Input connector DDR 4634 Number of outputs Output level Output impedance Output return loss Output rise and fall time Intrinsic jitter Output connector Optical DDT 4634 optical output DDR 4634 optical input Available wavelengths Optical path loss Optical fibre Optical connector Power Requirements Voltage Power consumption Other Temperature range Mechanical Finish Front panel Rear assembly Dimensions Optional accessories CWDM option order codes NOTE 3 DDT 4634 amp DDR 4634 2 97 Gb s 3G SDI to SMPTE 424M 1 485 Gb s HD SDI to SMPTE 292M 270 Mb s SD SDI to SMPTE 259M C and DVB ASI 750 gt 15 dB 5 MHz to 1 5 GHz gt 10 dB 1 5 GHz to 2 97 GHz gt 100 m at 2 97 Gb s 3G SDI with Belde
21. municated 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 O O SS D FRU 4000 110 240 V 50 60 Hz FRAME 0 7 A max IR RS232 NY KS Alarm AS3260 approval no CS6346N Ass no 804692 O O IRT SNMP Connections IRT modules fitted CDM xxxx with SMU 4000 PSU s 5 IRT SNMP Frame Eth l Ethernet Cable thernet Cable IRT modules fitted CDM xxxx with SMU 4000 PSU s 22M IRT SNMP Frame Ethernet Cable IRT SNMP Setup IRT Electronics Pty Ltd www irtelectronics com Page 15 of 18 Revision 00 DDT 4634 8 DDR 4634 DDT 4634 and DDR 4634 SNMP Functions With the DDT 4634 and DDR 4634 installed in an IRT frame fitted with SNMP capability these can be interrogated by an SNMP Network Management System NMS Due to the DDT 4634 and DDR 4634 sharing a common object identifier number OID within their respective firmwares when doing an SNMP
22. n 1694A typ 110m gt 100 m at 1 485 Gb s HD SDI with Belden 1694A typ 160m gt 250 m at 270 Mb s SD SDI ASI with Belden 8281 typ gt 300m 4 x BNC on rear panel 1 per channel 1 per channel data reclocked AC coupled 800 mV 10 750 gt 15 dB 5 MHz to 1 5 GHz gt 10 dB 1 5 GHz to 2 97 GHz lt 135 ps at 2 97 Gb s and 1 485 Gb s gt 0 4 ns and lt 1 5 ns at 270 Mb s lt 0 3 Ul at 2 97 Gb s reclocked lt 0 2 Ul at 1 485 Gb s reclocked lt 0 1 Ul at 270 Mb s reclocked 4 x BNC on rear assembly 1 per channel 0 dBm 4 5 0 dB CWDM DFB laser APD detector 9 to 27 dBm input level at 3G SDI typically lt 30 dBm at HD SD SDI PIN detector 3 to 18 dBm input level at 3G SDI typically lt 20 dBm at HD SD SDI CWDM DFB laser 1510nm 1530nm 1550nm 1570nm standard Other wavelength combinations available on request 9 to 27 dB at 3G SDI typically gt 30 dB at HD SD SDI APD detector 3 to 18 dB at 3G SDI typically gt 20 dB at HD SD SDI PIN detector Optical path loss Laser O P power Detector I P power Designed for use with 9 125 um single mode fibre 4 x LC PC standard on rear direct connection to main card 1 per channel 1 x SC PC standard with CWDM option fitted 28 Vac CT 14 0 14 or 16 Vdc DDT 4634 lt 6 0 VA DDR 4634 lt 6 5 VA 0 50 C ambient For mounting in IRT 19 rack chassis with input output and power connections on the rear pa
23. nel Grey background black lettering amp red IRT logo Detachable silk screened PCB with direct mount connectors to Eurocard and external signals 6 HP x 3 Ux 220 mm IRT Eurocard On board 1510 1530 1550 1570nm CWDM combiner SC PC optical connector standard DDT 4634 CWDM amp DDR 4634 CWDM Optical attenuator required for DDR 4634 when detector input is greater than 3dBm for PIN detector and 9dBm for APD detector With CWDM option fitted for combined use on a single fibre optical path loss is reduced by approximately 2 5dB Due to our policy of continuing development these specifications are subject to change without notice IRT Electronics Pty Ltd www irtelectronics com Page 6 of 18 Revision 00 CONFIGURATION DDT 4634 8 DDR 4634 User DIP switch settings DDT 4634 Sw1 3 Sw1 4 SW1 5 SW1 6 SW1 7 SW1 8 DDR 4634 SW1 3 SW1 4 SW1 5 SW1 6 SW1 7 SW1 8 NOTE OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON DIP kauaka SWi 1234567 8 DIP Switch Tx Input Rate swi 1 swi 2 3G HD SD Auto detect OFF OFF SD only ON OFF HD and SD only OFF ON Bypass Reclocker ON ON Enable Keep Alive signal on Channel 1 Laser is kept alive when no valid signal is present Disable Keep Alive signal on Channel 1 Laser only active when a valid signal is present Enable Keep Alive signal on Channel 2 Laser
24. on changes 1 notEnabled No Traps sent on change of electrical signal presence 2 enabled Traps automatically sent on change of electrical signal presence opticalStatus An indication of how the SFP optical component is functioning 1 opticalGood DDT 4634 channel laser is present DDR 4634 channel optical input level is good 2 opticallow Relates to DDR 4634 only Channel optical input level is approaching or has gone below its minimum input threshold AND electrical signal presence is also reported may or may not contain signal errors 3 opticalFail DDT 4634 channel laser has failed or is not present DDR 4634 channel optical input level is approaching or has exceeded its limit AND no electrical signal is present waveLength An indication of the DDT 4634 channel laser wavelength DDR 4634 always reports wideband indicating that it is a wideband receiver Relates to the DDR 4634 only An indication of the detector type 1 pin PIN detector installed on DDR 4634 channel 2 apd APD detector installed on DDR 4634 channel 3 na Not Applicable as reported by the DDT 4634 detectorType Enable or Disable Traps to be sent when the optical signal condition changes 1 notEnabled No Traps sent on change of optical signal presence 2 enabled Traps automatically sent on change of optical signal presence opticalTrapEnable fpgaVersion An indication of the firmware version of the microcontroller in the for
25. t 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 NMS s 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 M B 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 sends what is known as a trap to the NMS without any prompting from the NMS This allows automatic notification of
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