DDT-4624 & DDR-4624 User Manual
Contents
1. DDT 4624 amp DDR 4624 Thee ELECTRONICS User Manual IRT Electronics Pty Ltd www irtelectronics com Revision 00 QUAD 3G HD SD SDI ASI FIBRE OPTIC LINK Revision History DDT 4624 amp DDR 4624 Revision Date By Change Description Applicable to 00 12 06 2012 AL Original Issue Serial numbers gt 1201001 IRT Electronics Pty Ltd www irtelectronics com Page 2 of 15 Revision 00 USER MANUAL Table of Contents DDT 4624 amp DDR 4624 Section Revision History Operational Safety General Description Technical Specifications Configuration Installation Signal Connections Front and rear layouts Operation SNMP What Is It SNMP Functions DDT 4624 DDR 4624 Maintenance amp Storage Warranty amp Service Equipment return This instruction book applies to serial numbers gt 1201001 IRT Electronics Pty Ltd www irtelectronics com Page 3 of 15 v w ga o WO COON DU BN PRPRPRPRPRPP RB uUuununBbBwWwrRo Revision 00 DDT 4624 amp DDR 4624 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 equip2. al alarm connector IRT Electronics Pty Ltd www irtelectronics com Page 8 of 15 Revision 00 DDT 4624 amp DDR 4624 Front amp rear panel connector diagrams Q DDT 4624 DDR 4624 IRT IRT IRT Electronics Pty Ltd www irtelectronics com Page 9 of 15 Revision 00 DDT 4624 amp DDR 4624 OPERATION The DDT 4624 and DDR 4624 are set up to operate either automatically or at fixed rates corresponding to 3G SDI HD SDI or SD SDI or ASI rates Up to four independent 3G SDI HD SDI SD SDI or ASI signals are connected to the four 75 Q BNC connectors on the rear assembly of the DDT 4624 fibre optic transmitter Front panel LEDs indicates the presence of valid input signals On loss of an input signal a 54MHz oscillator can be switched into the optical output so that the DDR 4624 still recognizes the optical link as being valid This 54MHz signal does not affect the signal reclocking detect circuitry of the DDR 4624 which is used in signal presence alarm indication on detection or absence of a valid 3G HD or SD signals Single mode optical cable is directly connected to the rear assembly of the units This connector is separate from the main module allowing the card to be hot pluggable in the field without the need of first disconnecting the optical connections The system will operate with an optical path loss from 9dB to a maximum of 27dB for 3G SDI signals Typically gt 30dB for HD SD SDI signals when fitted w
3. and lt 1 5 ns at 270 Mb s lt 0 3 UI at 2 97 Gb s reclocked lt 0 2 UI at 1 485 Gb s reclocked lt 0 2 UI at 270 Mb s reclocked typically lt 0 1 UI 4 1 per channel BNC on rear assembly 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 CWDM DFB laser 1270nm 1290nm 1310nm 1330nm 1350nm 1410nm 1430nm 1450nm 1470nm 1490nm 1510nm 1530nm 1550nm 1570nm 1590nm amp 1610nm 9 to 27 dB at 3G SDI typically gt 30 dB at HD SD SDI APD detector 3 to 18 dB PIN detector Optical path loss Laser O P power Detector I P power Designed for use with 9 125 um single mode fibre 4 1 per channel LC PC on rear assembly 28 Vac CT 14 0 14 or 16 Vdc DDT 4624 lt 6 0 VA DDR 4624 lt 6 5 VA 0 50 C ambient For mounting in IRT 19 rack chassis with input output and power connections on the rear panel 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 SMU 4000 SNMP plug in module for use with 4000 series frame fitted with SNMP Agent Typical values based using DFB laser Optical attenuator required for DDR 4624 when optical path loss is less than 3dB for PIN detector and 9dB for APD detector Due to our policy of continuing development these specific
4. ations are subject to change without notice IRT Electronics Pty Ltd www irtelectronics com Page 6 of 15 Revision 00 CONFIGURATION DDT 4624 amp DDR 4624 DIP switch settings DDT 4624 ON DIP SW ge 1234567 8 SW1 1 OFF Disable Keep Alive signal on Channel 1 ON Enable Keep Alive signal on Channel 1 SW1 2 OFF Disable Keep Alive signal on Channel 2 ON Enable Keep Alive signal on Channel 2 Requires SW1 7 ON to be active SW1 3 OFF Disable Keep Alive signal on Channel 3 ON Enable Keep Alive signal on Channel 3 SW1 4 OFF Disable Keep Alive signal on Channel 4 ON Enable Keep Alive signal on Channel 4 SW1 5 Not Used SW1 6 Not Used SW1 7 OFF Enable SNMP control ON Enable DIP switch control 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 DDR 4624 SWw1 SW2 ON DIP ON DIP 1234567 8 1234567 8 CHANNEL 1 CHANNEL 2 CHANNEL 3 CHANNEL 4 DATA RATE swi 1 SW1 2 SW1 3 SW1 4 SW1 5 SW1 6 SW1 7 SW1 8 Auto Detect OFF OFF OFF OFF OFF OFF OFF OFF SD SDI ASI ON OFF ON OFF ON OFF ON OFF HD SDI OFF ON OFF ON OFF ON OFF ON 3G SDI ON ON ON ON ON ON ON ON CHANNEL 1 CHANNEL 2 CHANNEL 3 CHANNEL 4 RECLOCKER SW2 1 SW2 2 SW2 3 SW2 4 Enabled OFF OFF OFF OFF Bypassed ON ON ON ON SW1 5 Not Used SW1 6 Not Used SW1 7 OFF Enable SNMP co
5. el data rate reclocker 1 2 3 4 autoDetect The reclocker is automatically set to what the signal data rate is 3G HD or SD data rate mbps270 The reclocker is set to lock at 270Mb s rate to suit SD SDI or ASI types of signals sdi HD The reclocker is set to lock at the HD SDI rate sdi 3G The reclocker is set to lock at the 3D SDI rate An indication and setting of whether the reclocker is enabled or not 1 2 enabled The reclocker is enabled so as to lock to 3G HD or SD data rates dependent on the dataRate setting bypassed The reclocker is bypassed A15 byte maximum Alias name for the channel can be read and set Trap automatically sent if enabled when a channel status changes 1 2 disEnabled enabled The firmware version of the main FPGA in the format x y where x is the major revision number and y the minor The software version of the main FPGA in the format x y where x is the major revision number and y the minor Unit reset control A set with a value of 2 sent to this OID will cause a system reset to occur When queried returns a 1 IRT Electronics Pty Ltd www irtelectronics com Page 14 of 15 Revision 00 DDT 4624 amp DDR 4624 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 especial
6. equipped with four independent wavelengths 1510nm 1530nm 1550nm and 1570nm as standard allowing the unit to be interfaced with IRT s 4 or 8 way CWDM Fibre Muxes allowing four independent signals to be multiplexed on a single fibre Other wavelength combinations are available upon request Both the DDT 4624 and DDR 4624 are compatible with IRT s single channel digital fibre links IRT Electronics Pty Ltd www irtelectronics com Page 10 of 15 Revision 00 DDT 4624 amp DDR 4624 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 mus
7. 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 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 O O L D FRU 4000 110 240 V 50 60 Hz FRAME 0 7 A max im RS232 2 oye D Alarm AS3260 approval no CS6346N Ass no 804692 7 O O IRT SNMP Connections IRT modules fitted CDM xxxx with SMU 4000 PSU s Se SS IRT SNMP Frame Ethernet Cable Ethernet Cable IRT modules fitted CDM with SMU 4000 oe el IRT SNMP Frame Ethernet Cable IRT SNMP Setup IRT Electronics Pty Ltd www irtelectronics com Page 12 of 15 Revision 00 DDT 4624 amp DDR 4624 DDT 4624 am
8. ith an APD detectors and from 3dB to a maximum of 18dB when fitted with a PIN detectors For path lengths lt 9dB optical loss when using an APD detector or lt 3dB optical loss when using a PIN detector an optical attenuator is required The length of fibre that this corresponds to depends on the fibre loss characteristics at the relevant wavelength of the laser module chosen For example if the fibre loss characteristic of the chosen fibre is 0 2dB per kilometre at 1550 nm say then the maximum distance that can be run is 125 km 25dB 0 2dBkm although connector losses such as through patch leads etc should also be taken into consideration when calculating maximum distances Actual attenuation versus wavelength characteristics depends upon optic fibre manufacturer s own specifications The DDR 4624 receiver module accepts an input optical signal with a power level in the range of 9 dBm to 27 dBm for 3G SDI signals Typically lt 30dBm for HD SD SDI signals when fitted with an APD detector and 3 dB to 18 dB when fitted with a PIN detector A relay alarm accessible by the rear assembly indicates when the optical path loss is approaching or has exceeded the maximum allowed The output of the DDR 4624 receiver is the same signal that was originally inputted to the DDT 4624 transmitter A front panel green LED and a relay alarm accessible by the rear assembly indicates the presence of a valid locked output signal The DDT 4624 is
9. ld 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 a 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 equipment 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 15 of 15 Revision 00
10. lly 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 a predetermined event SNMP Block Diagram SNMP Agent SNMP Agent Protocol Engine SNMP Agent SNMP Agent Protocol Engine SNMP Agent SNMP Agent Protocol Engine IRT Electronics Pty Ltd www irtelectronics com Page 11 of 15 Revision 00 DDT 4624 amp DDR 4624 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
11. ly 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 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 fie
12. ment 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 15 Revision 00 DDT 4624 amp DDR 4624 GENERAL DESCRIPTION BLOCK DIAGRAM DDT 4624 amp DDR 4624 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 4624 and DDR 4624 are quad transmit and receive modules designed 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 using 9 125 um single mode fibre In addition the link may be used for ASI trans
13. nal 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 DDT 4624 and DDR 4625 are set up to automatically or manually operate at either 3G SDI HD SDI or SD SDI ASI signal rates and do not require any adjustment prior to use with the exception the DIP switch options described in the Configuration section of this manual There are no external controls on the front panel of the units Optical connections are made via LC PC optical connectors mounted on the rear of the modules 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 serial digital signal connections are made to the BNC connectors on the rear panels External alarm contact connections to the DDR 4624 are made to the 5 pin phoenix style connector at the bottom of the rear assembly On an alarm condition relay contacts go open circuit that is switch open with respect to ground when the input optical signal level is low or not present The connections being OPTICAL I P 1 ALARM OPTICAL I P 2 ALARM OPTICAL I P 3 ALARM OPTICAL I P 4 ALARM GND oe Note that the DDT 4624 is not equipped with an extern
14. ndent wavelength options available for use with a CWDM system Transmitter Tx and receiver Rx can be used separately with 4 independent single channel fibre Rx and Tx cards IRT Electronics Pty Ltd www irtelectronics com Page 5 of 15 Revision 00 TECHNICAL SPECIFICATIONS DDT 4624 Input serial data signal Input impedance Input return loss Automatic Cable compensation Input Connector DDR 4624 Number of outputs Output level Output impedance Output return loss Output Rise and Fall Time Intrinsic Jitter Output Connector Optical DDT 4624 optical output DDR 4624 optical input Available wavelengths Optical path loss Optical fibre Optical connectors Power Requirements Voltage Power consumption Other Temperature range Mechanical Finish Front panel Rear assembly Dimensions Optional accessories NOTE 1 DDT 4624 amp DDR 4624 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 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 with Belden 1694A typ 130m gt 100 m at 1 485 Gb s with Belden 1694A typ 170m gt 250 m at 270 Mb s with Belden 8281 typ gt 300m 4 1 per channel BNC on rear panel 1 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 4ns
15. ntrol ON Enable DIP switch control 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 NOTE 2 When using TRAPS via SNMP depending on how system is set up in order to avoid double reporting of alarms via the DDT 4620 and DDR 4620 cards themselves 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 15 Revision 00 DDT 4624 amp DDR 4624 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 Sig
16. ormat x y where x is the major revision number and y the minor The software version of the main FPGA in the format x y where x is the major revision number and y the minor Unit reset control A set with a value of 2 sent to this OID will cause a system reset to occur When queried returns a 1 NOTE 3 For SNMP control DIP switch SW1 7 of the relevant card must be in the OFF position IRT Electronics Pty Ltd www irtelectronics com Page 13 of 15 Revision 00 DDR 4620 ctriMode channelTable channelNumber status opticalRx dataRate reclocker channelAlias statusTrapEnable fpgaVersion softwareVersion reset DDT 4624 amp DDR 4624 An indication of the source for board control settings 1 2 remoteSNMP SNMP control SW1 7 OFF pcbSwitches DIP switch control SW1 7 ON Information on each input in table form Input channel number 1 2 3 and 4 An indication of the channel status 1 2 3 4 unlocked Reclocker cannot lock to the channel signal data rate or no signal actually exists on the channel locked270Mbps Signal present on channel is locked to the 270Mb s rate such as SD SDI or ASI lockedSDI HD Signal present on channel is locked to the HD SDI rate lockedSDI 3G Signal present on channel is locked to the 3G SDI rate An indication of the received optical input power 3dBm accuracy An indication and setting of the chann
17. p DDR 46240 SNMP Functions With the DDT 4624 and DDR 4624 installed in an IRT frame with SNMP capability these can be interrogated by an SNMP Network Management System NMS The following SNMP functions are capable of being monitored and controlled by an NMS DDT 4620 alarms controlSource channellnfoTable channelNumber channelPresent channelWavelength channelKeepAlive channelAlias channelTrapEnable fpgaVersion softwareVersion reset Anindication of the state of alarm 1 noAlarms No alarms present 2 UrgentAlarm Corresponds to a laser failure Anindication of the source for board control settings 1 localDIPsw DIP switch control SW1 7 ON 2 remoteSNMP SNMP control SW1 7 OFF Information on each input in table form Input channel number 1 2 3 and 4 An indication that the channel input signal is present or not 1 notPresent No input signal present on channel 2 present Input signal is present on channel An indication of the channel laser wavelength An indication and setting whether the channel has a Keep Alive signal present or not 1 off Keep Alive signal not active 2 on Keep Alive signal is active A15 byte maximum Alias name for the channel can be read and set Trap automatically sent if enabled when a channel is first present and when it is first absent 1 notEnabled 2 enabled The firmware version of the main FPGA in the f
18. port streams for use with MPEG compressed video streams or other 270 Mb s type data The transmitter features automatic input cable equalisation The unit can be configured at time of order with lasers of various wavelengths for use with a CWDM system 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 Both the DDT 4624 and DDR 4624 are fully hot pluggable with the fibre connections being independent of the main card being connected solely to the modules rear assembly SNMP Simple Network Management Protocol is available for monitoring and control when used in an IRT frame fitted with SNMP capability The DDT 4624 and DDR 4624 are Eurocard modules designed to fit IRT s current range of standard Eurocard frames and may be used alongside any other of IRT s analogue or digital Eurocards Standard features 4independent fibre links Transports 2 97 Gb s 3G SDI 1 485 Mb s HD SDI or 270 Mb s SD SDI amp ASI signals Hot pluggable fibre connections Various indepe
19. t 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 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 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 Norma
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