User Manual - IRT Communications
Contents
1. or at 1 485 Gb s rate 4 sdi3G Present Signal is either an 3G SDI signal or at 2 97 Gb s rate notPresent No signal is present IRT Electronics Pty Ltd www irtelectronics com Page 18 of 22 Revision 00 DDT 4632 amp DDR 4632 dataRateSet Control of the signal data rate setting 1 sdi3G HD SD ASI Reclocker set to 3G SDI HD SDI or SD SDI ASI rates 2 sdiHD SD ASl only Reclocker set to HD SDI 1 485 Gb s and SD SDI ASI 270 Mb s rates only 3 sdiSD ASl only Reclocker set to SD SDI ASI 270 Mb s rate only 4 bypassed Reclocker bypassed to allow other signal rates through 5 na Not Applicable If selected defaults to the sdi3G HD SD ASI rate setting channelEnable An indication and control of how and whether the channel is enabled 1 notEnabled The electrical input signals are not enabled 2 enabledActive Electrical signal is both Enabled and Active Relates to IN 1 3 enabledMuted Electrical signal is Enabled but the output is Muted when no signal is present or the wrong data rate has been applied 4 enabledChangedOver Reported if autoChangeOver is enabled and signal on current input is absent or invalid with a valid signal on opposite input indicating that opposite input is being transmitted 5 na Not Applicable If selected defaults to current applicable enabled setting channelAlias A16 character maximum Alias name for the input signals can be read and set blankLine A line spacing2. Power consumption Other Temperature range Mechanical Finish Front panel Rear assembly Dimensions Optional accessories WDM option order codes NOTE 3 DDT 4632 amp DDR 4632 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 Belden 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 2 x BNC on rear panel 1 per channel 2 x BNC on rear panel monitor outputs 1 per channel data reclocked AC coupled 800 mV 10 75 Q 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 2 Ul at 270 Mb s reclocked typically lt 0 1 UI 2 x BNC on rear panel 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 1310 1550nm standard 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
3. SDI or SD SDI or ASI electrical signal The standard laser wavelengths are 1310 nm corresponding to input 1 and 1550 nm corresponding to input 2 which allow the outputs to be optically multiplexed through a wave division multiplexer WDM if required Other wavelength combinations are available on request Likewise the DDR 4632 is a dual optical to electrical receiver with two separate optical detectors on the one card Each optical detector is independent in its operation from the other and outputs its own independent single channel 3G SDI HD SDI or SD SDI or ASI electrical signal The detector types available are either dual APD standard or dual 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 also occur Both the DDT 4632 and DDR 4632 are fully operable with previous IRT single channel 3G HD or SD fibre links Two optical SC 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 two channel wave division multiplexer WDM can be directly fitted to both the DDT 4632 and DDR 46
4. changeover is disabled and only the receiver with the valid signal present will be outputted Note that BNC connectors IN 1 and IN 2 are not used Optical Connections Optical connections are made to the panel 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 of 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 4632 and DDR 4632 has separate optical connectors for the two transmitter Tx1 amp Tx2 and receiver Rx1 amp Rx2 sections The DDT 4632 Tx1 optical output connector is the upper half of the optical connector whilst the Tx2 optical output connector is the lower half Likewise the DDR 4632 Rx1 input connector is the upper half of the optical connector whilst the Rx2 optical input connector is the lower half If the DDT 4632 and DDR 4632 are fitted with the optional 1300 1550nm wave division multiplexer WDM only one common optical connector is provided with both DDT 4632 Tx1 and Tx2 functions and DDR 4632 Rx1 and Rx2 functions occurring on a single fibre When operating the DDT 4632 with the WDM option fitted Tx1 is fitted with a 1310nm laser and Tx2 with a 1550nm laser 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 th
5. failure on the DDR 4632 is indicated by orange illuminated OPTICAL LEDs In this example the OPTICAL Rx2 LED is illuminated but so is the HD Rx2 signal LED This indicates that an HD signal is being received even though the OPTICAL alarm LED is illuminated thus the OPTICAL alarm LED is likely to be indicating that the optical signal level is low or approaching the minimum signal strength allowed before signal failure takes place whence the receiver output will be muted This is because the optical alarm threshold is set for the 3G rate which has a lower optical path loss than the HD and SD rates Note however that it is still possible for the optical signal strength to be indicating low and still allow an errorred data signal to be received before signal muting takes place If operating at signal paths close to the recommended maximum specified threshold signal analysis should be performed to check the accuracy of the link if the OPTICAL Rx LED is illuminated SD only HD SD only modes Note that it is possible to set the unit 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 situa
6. level is good 2 opticalLow Optical input level has gone below its minimum input threshold AND electrical signal presence is also reported may or may not contain signal errors 3 opticalFail Optical input level has gone below its minimum input threshold waveLength Applicable to DDT 4632 only DDR 4632 always reports 16 wideband Indicates that it is a wideband receiver detectorType An indication of the detector type PIN or APD fitted to the DDR 4632 1 pin PIN detector fitted Suitable for path losses up to 18dB at 3G SDI rate 2 apd APD detector fitted Suitable for path losses up to 27dB at 3G SDI rate opticalTrapEnable 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 3 na Not Applicable If selected defaults to notEnabled setting fpgaVersion An indication of the firmware version of the microcontroller in the format x y where x is the major revision number and y the minor Unit reset control 1 normal when queried reset control returns a normal state 2 reset system reset causes sysUpTime counter to reset NOTE 9 Typically gt 20dB at HD SD SDI rates Optical attenuator required for optical input levels gt 3dBm 10 Typically gt 30dB at HD SD SDI rates Optical attenuator required for optical input
7. levels gt 9dBm IRT Electronics Pty Ltd www irtelectronics com Page 21 of 22 Revision 00 DDT 4632 amp DDR 4632 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 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
8. 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 DDT 4632 The default settings of the DDT 4632 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 DIP switch options described in the Configuration section of this manual that also allow SD only HD SD only or reclocker bypass modes of operation The two transmitter sections of the DDT 4632 act independently from each other in that the signal rates are both independently set The serial digital signal connections are made to the BNC connectors on the rear panel IN 1 is the input to the Tx1 transmitter and IN 2 is the input to the Tx2 transmitter With DIP switch SW1 6 OFF if either of the inputs IN 1 or IN 2 are absent or invalid the valid input will switch in automatically to drive both Tx1 and Tx2 optical outputs Upon restoration of
9. 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 19 of 22 Revision 00 DDR 4632 sysDescr sysObjectID sysUpTime sysName irt463xType alarms ctriMode autoChangeOver channelinfoTable channelinfoEntry channelDesignator inputStatus dataRateSet channelEnable DDT 4632 amp DDR 4632 description of the unit Dual Optical Receiver Object identifier irtDDR4632 A indication of how long the unit has been running since its last power on or reset in Days Hours Minutes and Seconds 16 character writable system name Default set name DDR 4632 An indication of the device type 2 ddr4632 Receiver An indication of the alarm type 1 2 7 noAlarm No alarms present urgent 1 Optical input is absent nonUrgent 1 Optical input is low or received electrical signal is absent or invalid The current configuration setting s source as determined by DIP switch SW1 7 position 1 2 3 pcbSwitches Configuration set locally via on board DIP switches SW1 7 OFF remoteSNMP Configuration set remotely via SNMP SW1 7 ON 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 Enable or Dis
10. 32 to allow simultaneous transmission reception of optical signals on a single fibre The default settings of the DDT 4632 and DDR 4632 are set to automatically operate at either 2 97 Gb s 3G SDI 1 485 Gb s HD SDI or 270 Mb s SD SDI or ASI However either DIP switch or SNMP settings allow the units to be independently set for SD only SD HD only or reclocker bypass modes 2 97 Gb s 3G SDI 1 485 Gb s HD SDI or 270 Mb s ASI or SDI type of signals are connected to two 75 Q BNC connectors IN 1 and IN 2 of the rear assembly of the DDT 4632 fibre optic transmitter Front panel LEDs indicates the presence and data rates of valid input signals OUT 1 and OUT 2 BNC connectors of the DDT 4632 monitor the respective IN 1 and IN 2 signals If one of the inputs is not present or if its rate does not match the preset rate of the channel the other input if valid can be automatically switched if enabled to both the optical outputs On resumption of a valid signal the optical transmitters automatically switches back to their respective inputs Front panel LEDs indicates the presence of a valid input signals 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 3G then the corresponding LED will flash and the signal to the optical driver will be muted This is also true of the DDR 4632
11. DDT 4632 amp DDR 4632 INT ELECTRONICS User Manual IRT Electronics Pty Ltd www irtelectronics com Revision 00 DUAL 3G HD SD SDI ASI FIBRE OPTIC LINK Revision History DDT 4632 amp DDR 4632 Revision Date By Change Description Applicable to 00 06 06 2013 AL Original Issue Units fitted with firmware version gt Dxx463xS1V3 IRT Electronics Pty Ltd www irtelectronics com Page 2 of 22 Revision 00 USER MANUAL Table of Contents This instruction book applies to units fitted with firmware version gt Dxx463xS1V3 Section Revision History Operational Safety General Description Technical Specifications Configuration User DIP switch settings DDT 4632 DDR 4632 Installation Signal Connections DDT 4632 DDR 4632 Optical Connections Alarm Connections DDT 4632 DDR 4632 Front and rear layouts DDT 4632 DDR 4632 Operation Front Panel LED Indicators SD only HD SD only modes SNMP What Is It DDT 4632 amp DDR 4632 SNMP Functions DDT 4632 DDR 4632 Maintenance amp Storage Warranty amp Service DDT 4632 amp DDR 4632 v ga OOO ONNN DUN BB N M NNNRPRPRPRPRPRPRPRPRPRPRPPPBP HR N N O U1i U1 R amp ND ON R h kh IRT Electronics Pty Ltd www irtelectronics com Page 3 of 22 Revision 00 DDT 4632 amp DDR 4632 OPERATIONAL SAFETY WARNING Operation of electronic equipment
12. Laser O P power Detector I P power Designed for use with 9 125 um single mode fibre 2 x SC PC standard on rear direct connection to main card 1 per channel 1 x SC PC standard with WDM option fitted 28 Vac CT 14 0 14 or 16 Vdc DDT 4632 lt 5 0 VA DDR 4632 lt 5 0 VA 0 50 C ambient For mounting in IRT 19 rack chassis with input output and power connections on the rear panel Grey 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 1310 1550nm WDM combiner DDT 4632 WDM amp DDR 4632 WDM Typical values based using DFB laser Optical attenuators supplied for DDR 4632 when optical path loss is less than 3dB for PIN detector and 9dB for APD detector With WDM option fitted for combined use on a single fibre optical path loss is reduced by approximately 2dB 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 22 Revision 00 CONFIGURATION DDT 4632 amp DDR 4632 User DIP switch settings DDT 4632 SW1 5 SW1 6 SW1 7 SW1 8 NOTE OFF ON OFF ON OFF ON OFF ON 5 SW1 DIP ossceeen 1234567 8 DIP Switch Tx1 Input Rate SW1 1 SW1 2 3G HD SD Auto detect OFF OFF SD only ON OFF HD and SD o
13. RT Electronics Pty Ltd www irtelectronics com Page 22 of 22 Revision 00
14. a valid signal to the absent invalid port the optical transmitter automatically restores back to the condition of IN 1 feeding Tx1 and IN 2 feeding Tx2 With SW1 6 ON automatic changeover is disabled and only the transmitter with the valid signal present will be outputted The OUT 1 BNC connector acts as a monitor port for IN 1 whilst the OUT 2 BNC connector acts as a monitor port for IN 2 IRT Electronics Pty Ltd www irtelectronics com Page 9 of 22 Revision 00 DDT 4632 amp DDR 4632 DDR 4632 The default settings of the DDR 4632 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 DIP switch options described in the Configuration section of this manual that also allow SD only HD SD only or reclocker bypass modes of operation The serial digital signal connections are made to the BNC connectors on the rear panel Two signal outputs OUT 1 and OUT 2 are provided OUT 1 is the signal output of receiver Rx1 whilst OUT 2 is the signal output of receiver Rx2 With DIP switch SW1 6 ON if either of the optical inputs Rx 1 or Rx 2 is absent the valid input will switch in automatically to drive both OUT 1 and OUT 2 signal outputs Upon restoration of a valid signal to the absent Rx fibre port the receiver automatically restores back to the condition of Rx1 feeding OUT 1 and Rx2 feeding OUT 2 With SW1 6 OFF automatic
15. able Automatic Changeover to allow either optical input to switch to both OUT 1 and OUT 2 signal outputs on loss of other optical input 1 2 3 disabled Automatic Changeover mode disabled enabled Automatic Changeover mode enabled na Not applicable Setting this parameter has the same effect as disabled Information and control of the DDR 4632 in table form Table data entry An indication of the channel designator 1 2 ch 1 Optical Receiver Rx1 and signal output OUT 1 settings column designator ch 2 Optical Receiver Rx2 and signal output OUT 2 settings column designator An indication of the signal rate present within the received optical signal 1 unknownPresent Signal rate is not one of the 3G HD SD SDI ASI rates sdiSD ASI Present Signal is either an SD SDI or ASI signal or at 270 Mb s rate sdiHD Present Signal is either an HD SDI signal or at 1 485 Gb s rate sdi3G Present Signal is either an 3G SDI signal or at 2 97 Gb s rate notPresent No signal is present Control of the signal data rate setting 1 2 3 4 5 sdi3G HD SD ASI Reclocker set to 3G SDI HD SDI or SD SDI ASI rates sdiHD SD ASl only Reclocker set to HD SDI 1 485 Gb s and SD SDI ASI 270 Mb s rates only sdiSD ASl only Reclocker set to SD SDI ASI 270 Mb s rate only bypassed Reclocker bypassed to allow other signal rates through na Not Applicable If selected defaults to sdi3G HD SD AS rate se
16. e DDR 4632 IRT Electronics Pty Ltd www irtelectronics com Page 10 of 22 Revision 00 DDT 4632 amp DDR 4632 Alarm Connections The external alarm contact connections are made to the 4 pin phoenix style connector on the rear 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 4632 A Major alarm is designated as a laser fail alarm of either Tx1 or Tx2 The relevant front panel LASER LED will also illuminate in a laser failure situation A Minor alarm is designated as either input is missing or invalid DDR 4632 A Major alarm is designated as an optical input fail to either detector provided the relevant channel is enabled The relevant front panel OPTICAL LED will also illuminate in an opticalFail or opticallow mode A Minor alarm is designated as the signal output is missing or invalid OR the optic input level has been deemed to be approaching or has gone below its threshold limit NOTE 7 _ Itis possible via SNMP to disable signal channels on both the DDT 4632 and DDR 4632 8 This is reported as an opticallow condition via SNMP Note that if a received electrical signal is present in this situation it may be possible that the signal may contain errors if the optical signal level has actually gone bel
17. he DDR 4632 receiver are the same signals that were originally inputted to the opposite DDT 4632 transmitter Front panel green LEDs indicate the presence of a valid locked 3G SDI HD SDI or an SD SDI type of output signal IN 1 and IN 2 BNC connectors of the DDR 4632 card are not used In the reclocker bypass mode rates other than the 3G HD SD SDI rates can be sent and received If the data rate does not match that of 3G SDI HD SDI or SD SDI all front panel signal data rate LED s will flash to indicate that an unknown data rate has been detected Likewise an unknownPresent data rate is reported via SNMP Front Panel LED Indicators If the Tx or Rx input signal rate does not match the set rate the corresponding LED will 12 flash as Dee In this example the Tx1 section has been set for HD SD only with its input IN 1 is being fed 2 with a 3G SDI source The 3G LED of Tx1 will flash indicating that its input is at the 3G SDI 3G 9 rate The input IN 2 of Tx2 is being fed with an HD SDI signal as indicated by the Tx2 HD LASER LED being illuminated In this particular case the HD LED of Tx1 is also being illuminated indicating that the automatic changeover function is enabled with IN 2 feeding both Tx1 and Tx2 outputs Laser failure on the DDT 4632 is indicated by orange illuminated LASER LEDs In the above example there is no laser failure as indicated by the non illuminated LASER LEDs Optical Low or optical input
18. 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 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 22 Revision 00 DDT 4632 amp DDR 4632 GENERAL DESCRIPTION BLOCK DIAGRAM DDT 4632 amp DDR 4632 SIGNAL PATH 3G SDI 3G SDI HD SDI pe Looped O P1 HD SDI SD SDI Looped O P 2 SD SDI 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 detecto
19. ith 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 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 wha
20. lly a 1310 1550nm WDM 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 2 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 mode fibre LED indicators and external alarm contacts Transmitter Tx and receiver Rx can be used separately with 2 independent single channel fibre Rx and Tx cards Remote monitoring via SNMP Optional on board WDM 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 WDM option fitted for combined use on a single fibre optical path loss is reduced by approximately 2dB IRT Electronics Pty Ltd www irtelectronics com Page 5 of 22 Revision 00 TECHNICAL SPECIFICATIONS DDT 4632 Input serial data signal Input impedance Input return loss Automatic cable compensation Input connector Output connector DDR 4632 Number of outputs Output level Output impedance Output return loss Output rise and fall time Intrinsic jitter Output connector Optical DDT 4632 optical output DDR 4632 optical input Available wavelengths Optical path loss Optical fibre Optical connector Power Requirements Voltage
21. 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 Es D FRU 4000 110 240 V 50 60 Hz FRAME 0 7 A max IR RS232 Y KS Alarm AS3260 approval no CS6346N Ass no 804692 O O IRT SNMP Connections IRT modules fitted CDM xxxx with SMU 4000 PSU s ee ee IRT SNMP Frame Eth l Ethernet Cable thernet Cable IRT modules fitted CDM xxxx with SMU 4000 PSU s Re IRT SNMP Frame Ethernet Cable IRT SNMP Setup IRT Electronics Pty Ltd www irtelectronics com Page 17 of 22 Revision 00 DDT 4632 amp DDR 4632 DDT 4632 amp DDR 4632 SNMP Functions When installed in an IRT frame fitted with SNMP capability the DDT 4632 and DDR 4632 can be interrogated by an SNMP Network Management System NMS The DDT 4632 and DDR 4632 belo
22. ng to a series of fibre products that share a common framework and object identifier number OID when doing an SNMP walk via the NMS the reported identifier in the slot position list is reported as being irtDxx463x where the x signifies a wildcard character in this case a D T R and 2 as in the DDT 4632 amp DDR 4632 product numbers The specific product type and details are revealed when expanding this identifier The following SNMP functions are capable of being monitored by an NMS for SNMP control DIP switch SW1 7 must be set to ON DDT 4632 sysDescr description of the unit Dual Optical Transmitter sysObjectID Object identifier irtDDT4632 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 16 character writable system name Default set name DDT 4632 irt463xType An indication of the device type 1 ddt4632 Transmitter alarms An indication of the alarm type 1 noAlarm No alarms present urgent 1 Optical laser Tx1 is faulty urgent 2 Optical laser Tx2 is faulty urgent 1 2 Both optical lasers Tx1 amp Tx2 are faulty urgent 1 nonUrg2 Optical laser Tx1 is faulty and input signal IN 2 is absent or invalid 6 urgent 2 nonUrg1 Optical laser Tx2 is faulty and input signal IN 1 is absent or invalid nonUrgent 1 Input signal IN 1 is absent or invalid 8 nonUrgent 2 In
23. nly OFF ON Bypass Reclocker ON ON DIP Switch Tx2 Input Rate SW1 3 SW1 4 3G HD SD Auto detect OFF OFF SD only ON OFF HD and SD only OFF ON Bypass Reclocker ON ON Enable Laser laser is always enabled keep link alive signal when no input signal is present Auto Laser laser is enabled only when an input signal is present Enable automatic input changeover to both Tx optical outputs on loss of either input IN 1 gt both Tx1 amp Tx2 optical outputs on loss of IN 2 or IN 2 both Tx1 amp Tx2 optical outputs on loss of IN 1 Disable automatic input changeover 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 4632 card 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 22 Revision 00 DDR 4632 SW1 5 SW1 6 SW1 7 SW1 8 NOTE OFF ON OFF ON OFF ON 6 DDT 4632 amp DDR 4632 DIP Switch Rx1 Output Rate SW1 1 SW1 2 3G HD SD Auto detect OFF OFF SD only ON OFF HD and SD only OFF ON Bypass Reclocker ON ON DIP Switch Rx2 Output Rate SW1 3 SW1 4 3G HD SD Aut
24. o detect OFF OFF SD only ON OFF HD and SD only OFF ON Bypass Reclocker ON ON Not used Disable automatic input changeover Enable automatic input changeover to both Rx outputs on loss of either optical input Rx 1 gt both OUT 1 amp OUT 2 signal outputs on loss of optical Rx 2 or Rx 2 gt both OUT 1 amp OUT 2 signal outputs on loss of optical Rx 1 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 DDR 4632 card 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 8 of 22 Revision 00 DDT 4632 amp DDR 4632 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
25. ow 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 4632 IRT Electronics Pty Ltd www irtelectronics com Page 11 of 22 Revision 00 DDT 4632 amp DDR 4632 Front amp rear panel connector diagrams DDT 4632 4 DDT 4632 IT 1 2 Tx1 Dee HD 3G LASER Tx1 Tx2 Tx2 IN 1 Mon IN 1 Mon ff IN 2 Mon IN 2 Mon f DC CAUTION Direct connections to module Separate Single Fibre Tx1 amp Tx2 Fibres WDM version Standard option IRT Electronics Pty Ltd www irtelectronics com Page 12 of 22 Revision 00 DDR 4632 DDR 4632 IT 1 2 SD HD 3G OPTICAL DC CAUTION Direct connections to module N140 DDT 4632 amp DDR 4632 Rx1 Rx2 j Not Used i Not Used Rx1 O P K gt Rx2 0 P Ie Separate Single Fibre Rx1 amp Rx2 Fibres WDM version Standard option IRT Electronics Pty Ltd www irtelectronics com Page 13 of 22 Revision 00 DDT 4632 amp DDR 4632 OPERATION The DDT 4632 is a dual electrical to optical transmitter with two separate laser drivers on the one card Each laser driver is independent in its operation from the other and is fed with its own independent single channel 3G SDI HD
26. put signal IN 2 is absent or invalid 9 nonUrgent 1 2 Both input signals IN 1 and IN 2 are absent or invalid 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 autoChangeOver Enable or Disable Automatic Changeover to allow input changeover to both Tx optical outputs on loss of either input 1 disabled Automatic Changeover mode disabled 2 enabled Automatic Changeover mode enabled 3 na Not applicable Setting this parameter has the same effect as disabled channelinfoTable Information and control of the DDT 4632 in table form channellnfoEntry Table data entry channelDesignator An indication of the channel designator 1 ch 1 Signal input IN 1 and Optical Transmitter Tx1 settings column designator 2 ch 2 Signal input IN 2 and Optical Transmitter Tx2 settings column designator inputStatus An indication of the signal rate present 1 unknownPresent Signal rate is not one of the 3G HD SD SDI ASI rates sdiSD ASI Present Signal is either an SD SDI or ASI signal or at 270 Mb s rate sdiHD Present Signal is either an HD SDI signal
27. r The IRT DDT 4632 and DDR 4632 are dual transmit and receive modules designed principally for use as two 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 an active loop through monitoring port on each input Both the transmitter and receiver modules are configurable for automatic changeover to both outputs on loss of either input if required 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 two independent fibre paths starting from or coming to a single location LED indicators are provided on both modules for digital signal presence type laser or optical failure and power A link selectable keep link alive signal is available to maintain optical link operation when no electrical input is present Relay contact outputs are also provided for external use of alarm signals on both modules Optiona
28. t 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 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 16 of 22 Revision 00 DDT 4632 amp DDR 4632 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
29. 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 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 I
30. tions 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 IRT Electronics Pty Ltd www irtelectronics com Page 15 of 22 Revision 00 DDT 4632 amp DDR 4632 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 w
31. tting An indication and control of how and whether the channel is enabled 1 2 3 4 5 notEnabled The electrical output signal is not enabled enabledActive Electrical signal is both Enabled and Active enabledMuted Electrical signal is Enabled but the output is Muted when no signal is present or the wrong data rate has been applied enabledChangedOver Reported if autoChangeOver is enabled and optical signal on current input is absent with a valid optical signal on opposite input indicating that opposite input is being received na Not Applicable If selected defaults to current applicable enabled setting IRT Electronics Pty Ltd www irtelectronics com Page 20 of 22 Revision 00 DDT 4632 amp DDR 4632 channelAlias A16 character maximum Alias name for the input signals can be read and set blankLine Aline spacing within the table to make reading the table easier channelKeepAlive Applicable to DDT 4632 only See explanation for DDT 4632 SNMP function 3 na Not Applicable chanPresTrapEnable Enable or Disable Traps to be sent when the electrical signal condition changes 1 notEnabled No Traps sent on change of electrical signal presence 2 enabled Traps automatically sent on change of electrical signal presence 3 na Not Applicable If selected defaults to notEnabled setting opticalStatus An indication of how the SFP optical component is functioning 1 opticalGood Optical input
32. when it detects a channel signal on its optical input In this example shown both input signals are present but IN 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 individually disable the channels on either the DDT 4632 and DDR 4632 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 14 of 22 Revision 00 DDT 4632 amp DDR 4632 The BNC outputs OUT 1 and OUT 2 of t
33. within the table to make reading the table easier channelKeepAlive A substitution of a 54 MHz signal in place of no input 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 If selected defaults to Off state chanPresTrapEnable Enable or Disable Traps to be sent when the electrical signal condition changes 1 notEnabled No Traps sent on change of electrical signal presence 2 enabled Traps automatically sent on change of electrical signal presence 3 na Not Applicable If selected defaults to notEnabled setting opticalStatus An indication of how the SFP optical component is functioning 1 opticalGood Laser is present 3 opticalFail Laser has failed or is not present waveLength An indication of the laser wavelength detectorType Applicable to the DDR 4632 only See explanation for DDR 4632 SNMP function 3 na Not Applicable opticalTrapEnable 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 3 na Not Applicable If selected defaults to notEnabled setting fpgaVersion An indication of the firmware version of the microcontroller in the format x y where x is the major revision number and y the minor Unit reset control
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