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OTOT-EM55X_&_XL_Manu.. - Olson Technology Inc.

1. Standard Operation LED green Modul LED Non Urgent Alarm warning LED yellow Urgent Alarm LED red Nominal Input Power LED green IN LED Input Power Out of Nominal Operation LED yellow Loss of Input Power LED red Nominal Output Power LED green Lack of Output Power LED yellow OUT LED Loss of Output Power LED red Standby Operation LED dark OTOT EMS55X XL Optical Transmitter Rev x1 www olsontech com 14 1 O ports of OTOT EM55X optional XL versions only The OTOT EM55XL from hardware release 2 0 is optionally equipped with two 2 general purpose I O and four 4 input only binary mode ports The ports can be configured via the Webserver HTTP interface The schematics of these ports are given below GND Figure 6 Schematic for I O Ports 16 F la 2N7002 Figure 7 Schematic for Input only Ports Notes e The maximum voltage applied to all ports should be not below GND level and should not exceed 5Vpc e The input level for input high should be gt 3V the input level for input low has to be lt 1V for NEC hardware re lease 2 0 e The input level for input high should be gt 1 6V the input level for input low has to be lt 0 8V NEC for hardware release 2 1 e The input only port and the open drain output port have a pull up resistor of about 100kOhms towards 3 3V e The active low output resistance to GND of the output port is lt 210Ohms OTOT EMS55X XL Optic
2. Controller a Reset RS485 gt interface lt gt A Liquid crystal display XA push buttons nm y pat Detector ar v ht lt w A KX N X A 44 opt Output Na J O gt gt E O a opt Output 2 Input ze ov Power Monitor ZE l Sa al RF Input RF Monitor perat PEZ D Figure 2 Transmitter Functional Block Diagram The RF input signal is fed into a preamplifier comprising an automatic gain control circuitry The AGC stabilizes the output signal of the preamplifier to maintain a stable RMS root mean square optical modulation index OMI of the optical modulator Input level variations are compensated as long as the AGC circuit is working in its nominal gain range The AGC can be turned off for a constant gain operation via the push buttons or the Ethernet interface in order to tai OTOT EM55X XL Optical Transmitter Rev x1 www olsontech com 7 lor the CNR CSO CTB performance to the used frequency plan and the requirements of the customer by using a dif ferent input level Via a high pass circuit the electrical RF signal is applied to the input of a predistortion circuit which is foreseen to lin earize the squared sine wave transmission function of the electro optical modulator The predistortion circuit is re quested to minimize 3rd order intermodulations CTB composite triple beat The output signal of the predistortion circuit is amplified to proper input level for the elec
3. nut Active low Y Evert Log Statistics P General Purpose vO Admnestration SNMP Contiguration Server Update Contig Save Config Restore Port No 5 Figure 29 Available Modes of Operation for the I O Port The options for the input ports are shown in Figure 30 OTOT EMS55X XL Optical Transmitter Rev x1 www olsontech com 2 General Purpose I O Microsoft Internet Explorer Datei Bearbeiten Ansicht Eavoriten Extras 2 4 suchen Sly Favoriten E O a SEAE lt El wechsen zu gi Que 9 nas El ntp 172 023 041 103 gpio html 1SON ECHNOLOGY me P ek es104 Port Mo 1 Devices Update Port Ho 2 Rachie Configure Stots lt a oo Logout Evert Log Statistics JP General Purpose x SNMP Configuraton Server Update coa Contig Restore General Purpose lO VO Mode VO Level LO State 1O Description hpt Active low Inactive Port No 1 ret Active low Inactive Port No Active low w Inactive Port No 3 Active low Inactive Port No 4 Active kw v Inactive Port No Change 0 intenet Figure 30 Available Modes of Operation for the Input only Ports The available modes of operation for the I O ports are given in the table below Port mode Description Application examples Input Input is notify Input signal default factory stetting Input signal creates a notify message exclama tion mark in status display Somebody entered the headend available on p
4. rent for the thermoelectric cooler At 90 of the available cooler drive current and or gt 130 of the initial laser diode operating current a B grade alarm is generated which indicates a warning At 100 cooler drive current the laser diode operating current is switched off to protect the laser diode against irregular temperature conditions and an A grade alarm is generated indicating a severe malfunction Both types of alarms are causing the corresponding LED on the front plate of the optical transmitter to emit In case of a B grade alarm the yellow LED is lighting since the unit is still working properly however close to its limits In case of an A grade alarm the red LED is emitting The messages to the network management system are of course more detailed They include the actual values of the currents and tem perature as well as alarm flags To suppress the Stimulated Brillouin Scattering SBS the wavelength spectrum of the optical signal is broadened Two technologies are used e Broadening the optical spectrum by modulating the laser diode operating current with a microwave signal e Broadening the optical spectrum by driving an optical phase modulator with a microwave signal These circuits are mandatory to avoid stimulated Brillouin scattering SBS in optical fibres and allow operation with optical amplifiers feeding at least 13dBm of optical power into standard single mode fibres For the XL version of the transmitter all microwave signa
5. In the main window a button RescanAll allows to research the network for newly connected devices Please note that new devices should be automatically detected by the server when inserted into the RS485 bus but if there are problems then this button might help the server to find all devices OTOT EMS55X XL Optical Transmitter Rev x1 www olsontech com 30 Devices Update Using this menu button an update of the selected devices firmware is possible as can be seen in Figure 23 2 Devices Update Microsoft Internet Explorer gt ay x Datei Bearbeiten Ansicht Eavorten Extras 2 tr Que O ix A G em from O Dm JOA Adresse http 172 023 041 103 upd_dev html v E wecsenzu iris GE BK Devices Software Update ECHNOLOGY me Model Sertalminber Software Release le Release E sesion oos 25 z Paesioa Devices Updete Select the binary image fe for the BK devices called devices dat and upload it fackwiew After a succesfull upload the webserver will show all devices that can be updated Please note that the device has less functionality during the sofware update process I Configure Sots Cor Logout Evert Log Upload selected fe Statistics F Generat Purpose YO Administradon SNMP Configuration Server Update Contig Save Contig Restore 2 Fertig MO internet Figure 23 Devices Update Menu OTOT EM55X XL Optical Transmitter Rev x1 www olsontech com 31 Configure Slots The menu Configure Slots can optionall
6. XL versions ONLY cesssccssesssecescseeeceecsesseeecsessessesaesesaesassceaceaeaesaesaenecnecasaeeneeeeeesetees 15 Figure 6 SchematiGfor VO Ports vitalidad iia 15 Figure 7 Schematic for Input only Ports ooocciccinnnncnicnnononnnnnnononononananononononona nn non cn ononn anar an canoa nan rn anna cian rones 15 Figure 8 Model OTOT EM55XL Rear Panel Connectors 16 Figure 9 8 Port Mint DIN Connector ksmiicncai dt ad dia didas 16 VO port oLOTOT EMISX onn e at EA N AA A AA AS ARS 17 ETE TO A A A A A OORTE 17 Figure 11 Model OTOT EM55X Rear Panel Connectors Figure 12 8 Port Mini DIN Connector presari a ina EE REREN dodo donado deidad A Interfaces A RN NMS Server Interface Ethernet 10 100Mbps XL Local Setup interface RIZZO A aaa ad Device bus interface RS485 master XL csesssccssessnecsseseeecescseeecsecsessessescesceaccesceaeeacaecaseceaeeascsecececeeeeeseceesaeeseesaeeaeataes 19 Device bus interlace RS485 slave iii a das 19 ET a A ia aR Si 19 Figure 13 Model OTOT EM55X Front Panel Drawing REP A E A OE AA sven Ed A A Figure 14 Model OTOT EM55X Rear Panel Drawing Power supply and Fan Moll o de da feb Noa Med hd eo TOS 24 ON MA A AA AA SINE RS WO as Figure 15 100 240 Volts AC Power Supply Drawing cc ccsesseccsseseeeeeecesseeeeceseeeseeasscesceaeeecnecneeeeneceseesseeeseeeaee 20 err BSR NG pre 00 60 D1 A NO Figure 16 Fan only Module OTOT EMS55X XL Optical Trans
7. a properly working backup power supply OTOT EMS55X XL Optical Transmitter Rev x1 www olsontech com 20 007314 1910 0101 Aot SV19 1HE 48V Figure 16 48 Volts DC Power Supply Drawing Fan only Module For applications where only one power supply is required Olson Technology offers a fan only module sshown in Figure 17 The fan only module can be exchanged during operation hot plug in technology without harming the equipment or having any impact on the operation of the transmitter in case of a properly working power supply Figure 17 Fan Only Module Drawing Operating the OTOT EM55X Power Up Sequence Be sure that the OTOT EMS55X is going to be put into operation under the specified environmental conditions Avoid temperature shocks after transportation of the OTOT EM55X and allow sufficient time to accommodate the environmental conditions at the operating site If not already completed install the appropriate power supply with fan modules respectively fan only modules Connect the OTOT EMS55X to one or two in case of redundant power supplies appropriate power supply lines If only one power supply cable instead of two is connected to an OTOT EM55X equipped with redundant power supplies an alarm will be generated and shown with a yellow brightening MODUL LED After startup with appropriate power line connections the MODUL LED lights green and the LCD illumina tion is on Then the LCD illumination switc
8. active Output 1 inactive 2 RF input level of OTOT EMS55XL is extremely low alarm The I Os will be Output 0 active Output 1 active 3 Optical input power level of Optical Amplifier is low warning OTOT EM55X has no warnings or alarms The I Os will be Output 0 inactive Output 1 inactive 4 Optical input power level of Optical Amplifier is low warning OTOT EM55X has no warnings or alarms The I Os will be Output 0 inactive Output 1 inactive 5 Optical input power level of Optical Amplifier is low warning OTOT EM55X has no warnings or alarms I O 2 is set to alarm on input I O 2 receives an alarm The I Os will be Output 0 inactive Output 1 active 6 Optical input power level of Optical Amplifier is very low alarm OTOT EM55X has no warnings or alarms The I Os will be Output 0 inactive Output 1 active OTOT EMS55X XL Optical Transmitter Rev x1 www olsontech com 39 Server Administration z z F Sie 2 Server Admin Microsoft Internet Explorer OX Datei Bearbelten Ansicht favoriten Extras 2 E Gare d A G Pe Prom O Drs 2 JO El htp 172 023 041 103 serv_adm html E wechseln zu Or Server Admin str ation ECHNOLOGY me IP Settings IP Address 172 23 41 103 Change Netmask 255 255 255 0 PP ok Es104 bid dh Defaultrouter 000 0 Configure Sicts Passwords technical O Change uan o ses sysadmin o Evert Log Statistics LCD Keycode O PP Cenerat Purpose w Alairen
9. instead of OID with the ENTERPRISE OID scteHmsTree scteHmsTree 1 3 6 1 4 1 5591 1 as demanded by HMS MIB 1 3 6 1 4 1 5591 1 and with Trap Type ENTERPRISE and with Trap Type COLD START SPECIFIC Specific Trap Type 0 HMS Notifications Enabled Disabled All messages of type Notification are sent as Trap and are All messages of type Notification are not sent as Trap and inserted in the SNMP SCTE HMS tables Since HMS does are not inserted in the SNMP SCTE HMS tables not recognize Notifications HMS Severity minor is re In the Webbrowser the Notifications are still shown ported hfcinventory Format T Nova E531i DKS T12 9 The SNMP variable hfcInventoryFabricData of the The SNMP variable hfcInventoryFabricData of the T NOVA HFC INVENTORY MIB is provided in the format T NOVA HFC INVENTORY MIB is provided in the format defined by Biedenbach T Nova E5311 defined by Herberg DKS T12 9 1 Default setting up to NECE Software Release 1 10 Trap Verify If traps are to be transmitted via non permanent links like dial up links e g using ISDN or standard analog modem it is important to verify that the link to the trap receiver is working before any SNMP traps are sent Otherwise the traps could get lost With NEC E software 1 10 x and later several settings have been introduced to obtain a verification of the link be tween the trap transmitter NEC and trap receiv
10. which can be e a NEC which is directly embedded in the 19 housing This is the case of an OTOT EM55XL e aNEC E 19 a network element controller in 19 1RU housing providing 12 general purpose I O ports or e anembedded NEC in other Olson Technology products such as an optical amplifier or a direct modulated transmitter DS26 The network element controller NEC allows supervising and controlling the function of the transmitter and other equipment which is connected to the RS485 master interface using the integrated Ethernet webserver HTTP inter OTOT EMS55X XL Optical Transmitter Rev x1 www olsontech com 27 face In case of the OTOT EM55XL the NEC E is embedded and a connection between NEC E and OTOT EM55X has been established internally In order to enable the communication of an OTOT EM55X XL with a NEC the RS485 slave port of the OTOT EM55X XL has to be connected with the RS485 master port of the NEC The NEC Ethernet interface has to be connected to a PC either directly via a crossed Ethernet cable or via a LAN It is important to set the IP address of the NEC in order to be compatible with the available LAN IP addresses The IP address can be changed using the pushbuttons and the LCD please refer to NEC operating manual In the example below the IP address has been set to be 172 23 41 65 Communicating with the NEC If a Webbrowser gets in touch with the NEC of the transmitter a display as shown below will appear with
11. 1 7 N A Input only No 2 3 N A Input only No 3 8 N A Input only No 4 4 N A Input only No 5 6 N A Notes e Onpin 1 there is a 5 1Vpc supply voltage available for feeding an external interface box which could contain optocouplers or relays etc the current sinked from this port should not exceed 80mA e In order to not degrade the EMI performance of the OTOT EM55X a shielded cable with the shield connected to pin 2 GND of the mini DIN comnector has to be used e 1 0 0 is directly related to the transmitter If the port is used as an output alarms related to the transmitter can be accessed on this output If the port is used as an input it enables easy redundancy switching between two re dundant OTOT EM55X EMS Service Interfaces NMS Server Interface Ethernet 10 100Mbps XL The NMS server interface is the main NMS interface of the optical transmitter It supports HTTP and SNMP protocols The NMS server firmware can be downloaded for future software upgrades via the RS232 interface Local Setup interface RS232 XL Connector Sub D9 male Configurations 115 200 baud 8 data 1 stop no parity Interface RS232 Pinning Pin 1 4 6 9 n c Pin 2 RxD Pin 3 TxD Pin 7 RTS Pin 8 CTS Pin 5 Gnd The local setup interface can be used to locally setup the NMS server s parameter like IP parameters and passwords by using the tool NmsSetup exe It is also used
12. 18 settings1 html v Ewecsenzy Ls Gr Status Parameter Voteges Seinge Lints Lits Event Mask Properties ECHNOLOGY me Settings C P BK E5104 S8S Suppression 165 dBm Channel Distance 7 MHz Devices Update OMI 1870 RF Gain 00 gB IO Oui nominel 107 Ao Configure Slots Laser Frequency 192900 GHz noc wade 132700 Fon 3 Logout 192750 Optical Output Power 2 v Evert Log 192850 Statistics VO Port Mode 192900 Jutpul PP General Purpose YO Output Port Mask All alarms no warnings Administron SIMP Configuration Server Usdate Contig Save Contig Restore Figure 44 Changing the ITU Frequency of the OTOT EM55XL OTOT EM55X XL Optical Transmitter Rev x1 www olsontech com 55 Changing the AGC Mode The transmitter can be operated in non AGC manual as well as two different AGC modes 2 Settings 1 Microsoft Internet Explorer ox Date Bearbeiten Ansicht Favoriten Extras Que O 280 Pace Jero O E 2 2 Adresse 48 ntrp 172 023 041 103 U5 DOCO29EE4E18 settings1 htmi 9 m Wa y E wechsainzu_ Ls Or Qe Porometer Votozes Seinge mts Links EvertMask Propetes Parameter Voteges Seinge Limits Lim s2 Evert Mask Properties ECHNOLOGY me Settings MIKEA SBS Suppression 165 dam Channel Distance 7 MHz Devices Update OM 1870 RF Gain 00 qa IT om 107 vis RON SR Laser Frequency 192800 GHz AGC Mode CW AGC on unmodulated carriers Logout Manual AGC OM Evert Log O
13. 4 LSON Decunoscr INC OTOT EMS55X OTOT EM55XL Optical Transmitter 1550nm OPERATING MANUAL 24926 Highway 108 Sierra Village CA 95346 Phone 800 545 1022 Fax 209 586 1022 Rev 1 E Mail sales olsontech com 12 02 07 TABLE OF CONTENTS Safety MSCONS A A is 5 Parts LAS doc iii aid dd a Ai A A dd dE di Ordering Information General Description Intr d ctio tna aa a a 2055 0s das Jeunes cob eaigescuasupaostscadedeesy i a ta wenecdeda E E Figure 1 Model OTOT EM55X Front View Principle A A EA E E EE EEE 7 Figure 2 Transmitter Functional Block Diagram sse ssssssessssestssssessstesestsststssttntntsntsestestntntnteststessntnestesenesenreneness 7 Figure 3 EMS NMS Interface s ic s6s de siess cet tdeececoneavaseasaucutaescassexess EAEE AS stuns a I te ut cutee E EE E dents aul 9 Figure 4 OTOT EM55X Interfacing with Other Equipment and a SNMP EMS 10 Technical SpecitiCatiOns avast dr ets da tab o bd O a ed 11 Applications a A a aA 11 BAM A A A AFA sus eeati eee 11 OTOTFEMSSIXEL POrOrmanCO drid SAET AIETE AAT EET R E sopas 11 LOS CONMSUTAONS Carito nE E E AA A N EN AA ER A r A GG 12 OTOTREMSIXA Perfomance aga a a a a ii i a a corde craig a 12 Test Configurations 13 General Propet eS is eiii E AAA AR AEREA ESA E e BASA 13 Figure 5 Unit Line DF win giv fcc sede ccke eds a a aape dio distance 14 Displays and Alaris a Pa A TT taagriahe ease 14 T O ports of OTOT EM55X optional
14. Other Page Reftesh 30sec v Change SNMP Contigaration Server Update cea penen Contig Save Contig Restore gl Fertig internet Figure 31 Server Administration Menu The server administration menu allows modifying the IP parameters the user names and passwords and the interval how fast the WebBrowser pages are updated The update interval has to be chosen carefully especially if the number of devices polled by the NEC is quite high in order to avoid too much communication traffic The new parameters in the different blocks are executed by clicking on the change button of the individual block There are three levels of login priorities defined Factory Default Pass pais Username ward Description technical technical In this level all parameters can be changed except the update and server administration items In this level additionally to the technical level the server and update update device update processes can be executed sysadmin sysadmin System administrator level all tasks can be done OTOT EMS55X XL Optical Transmitter Rev x1 www olsontech com 40 SNMP Configuration A SNMP configuration menu is available as shown in the picture below 2 Server Admin Microsoft Internet Explorer MS Datei Bearbelten Ansicht Favoriten Extras 2 iy Gane d A G Aann from O Z Aa dEl htp 172 023 041 103 serv_adm html a Wechseln 2u gt Or Servet Administration ECHNOLOGY me P Se
15. Rev x1 www olsontech com 21 Mode AGC on CW Unmodulated Carriers factory setting Most tests CNR CSO CTB are performed with unmodulated carriers using a Matrix generator or a CATV headend with the modulation switched off These tests should be performed in the AGC on CW unmodulated carrier mode The OMT otrms Should be set to the factory setting 0 dBr This mode is also the recommended mode for standard op eration with real picture modulation Be aware that for AM VSB TV channels the carrier levels with modulation de creases by about 4dB however depending on the picture content This decrease in input level has to be compensated by the AGC for optimum signal transmission For proper operation an appropriate input signal has to be connected to the OTOT EM55X At least 2 RF channels with a channel spacing of 24MHz software adjustable are required to obtain a stable performance The nominal channel load factory settings for the OTOT EM55X family however is given in the table below Model AM TV channels FM channels QAM64 TV channel level Total RMS OMI Total yy 0 dBr at 4dBr channels dBuV Level 10dBr dBm D84 84 0 0 80 19 4 9 5 N77 71 0 0 80 18 6 9 9 The OTOT EM55X has a built in RF power meter function which monitors the total level at the input of the transmit ter as given in the right most column of the table beyond This level depends on the number of
16. Stots Alarm 719 vw 2611 4 Warming 21 1 65 dBm Waring 117 27 wil 2501 wll Logout Hysteresis 02 8 Evert Log Hysteresis 02 de Stobsbes Note Some RF input limits are out off detectable range P General Pu pe re adjust limits please General Purpose VO een RF gain Output Power SNMP Contiguration Server Update Low High Low High Server Configuration Alarm 101 47 0B Alarm 1 40 134 w dBm Contig Save Waming 100 40 vw dB Waming 64 124 dBm Conng Restore Hysteresis 02 v 6B Hysteresis 05 v dB TEC Current Low High Laser Current Low High Alarm 1000 Waming 1300 Warning sov Hysteresis 30 v Hysteresis 30 v Module Temperature Low High Aam 00 700 C Warning 50 v 550 v C Hysteresis 40 c Change Y Bi Fertig 1 Internet Figure 52 Limits Menu of OTOT EM55X After successful log in the warning and alarm thresholds for the RF RMS input level OMI total RMS RF gain and optical output power can be set by the customer OTOT EM55X application software release 2 0 and later It is rec ommended to be very careful in setting the alarm thresholds in order to avoid meaningless alarms e g due to tem perature changes etc For the output power warning a range of at least 1dB is recommended Note The settings range for the alarms thresholds for RF input RF gain and OML os might change slightly from device to device due to production tolerances OTOT EM55X XL Optical Transmitter Rev x1 www
17. alar Logout P muo 09 41 22 BK ESIOA Te000582 RF gral low adorn Sonte P muo 08412 BK ESIOA 18000582 Power suppty right taire Statistics Po ie x 034405 084121 BK ESIOA TEDOOS82 Tredeveciesiotngee General Purpose VO RT I oaos 0241 02 BKES10A 1E000582 The device is starting up SNAP Configuration muo 09 41 02 BK ESIOA 16000582 New device detected Server Update ouo 09 4037 NECEE TEDOOSS2 Server started Contig Save Config Restore El Fertig intenet Figure 26 Event Log Page There are several marks filled or unfilled used to show all events e Green exclamation marks show events which occur during normal operation If the exclamation mark is filled with green colour which means that the event is still present If the exclamation mark is empty filled with white colour it means that the event has passed At the same time the previous shown event with filled excla mation mark is scratched out e Red flags show urgent alarms The meaning of filled or unfilled flags is the same as with the exclamation mark e Orange flags show warnings The meaning of filled or unfilled flags is the same as with the exclamation mark All events are shown with time stamps the equipment causing the event the serial number of the equipment and a de scription of the event Since one NEC Server might supervise many different equipment transmitter optical switches optical amplifiers optical receivers the events of all the supervised equipment wi
18. aliasname if further devices are communicating with the NMS server Device No Device s aliasname is shown NMS Server menu s OTOT EM55XL only NMS Server IP Settings Set the IP parameters of the server Keycode Change the LCD keycode Properties Show server properties like software and hardware releases Date amp Time Adjust the server s real time clock Reset Server Software reset the server Rescan RS485 Re Search for RS485 devices on the bus Logout Logout from LCD and return to Root Screen NMS Server gt IP Settings NOTE Dont forget to Save Settings after a change Save Settings Save the changed IP parameters The server gets reset after saving the new data IP address Change or show the IP address Netmask Change or show the netmask Default router Set or show the default router DHCP Set or show DHCP usage OTOT EMS55X XL Optical Transmitter Rev x1 www olsontech com 26 Optical Transmitter Device Menu s Alarms Warnings Infos Show device s alarm warning or info messages Settings AGC Mode Change or show the AGC mode OMI total RMS Change the OMI total RMS for AGC mode related to the nominal OMI total RMS RF Gain Change RF Gain for Manual mode related to the nominal gain for nominal OMI total RMS and nominal RF Input power SBS Suppression Change or show the SBS Suppression OTOT EM55XXLa only Channel Distance Change or show the Channel Distance for the CSO control loop ITU Frequency Change or show the lasers I
19. higher than the warning limit 24 12V_LOW_WARNING Supply 12V is lower than the warning limit 25 12V_HIGH_ WARNING Supply 12V is higher than the warning limit 26 N A N A 27 N A N A 28 LASER_TEMP_ DIFF LOW_WARNING Laser temperature difference from nominal value is lower than the warning limit 29 LASER _TEMP_DIFF_ HIGH WARNING Laser temperature difference from nominal value is higher than the warning limit 30 MODULE_TEMP_LOW_WARNING Module temperature is lower than the warning limit 31 MODULE_TEMP_HIGH_ WARNING Module temperature is higher than the warning limit Situations triggering a warning flag in the OTOT EM55X Flags in bold letters can be controlled via the limits menu OTOT EM55X XL Optical Transmitter Rev x1 www olsontech com 64 Limits Menus The two limits menus of the OTOT EM55X determine what deviations from the nominal values of some of the oper ating conditions of the transmitter lead to either warning or alarm messages In order to avoid inadequate changes some settings are factory settings only 2 Limits 1 Microsoft Internet Explorer g x ar Datei Bearbeiten Arsicht Eavoriten Extras 2 Gana i BO Ps fron O Dry mA sd x 8 http 172 023 041 103 U5 00C020EE4E18 limits1 htmml v E wechseln zu Link Or Status Parameter VoRages Settings Limts 4 ECHNOLOGY me Limits ua AF pad fetal rma BK ESIOA Devices Update Low High Omi total rms Low High A tv stv com Configure
20. lower mode field fiber diameter e higher quality lower loss fiber e fewer lower loss splices Olson Technology tests the SBS and SPM performance of the OTOT EMSSXL with a standard IEC rec G652 fiber under worst case conditions link containing no splices and providing a fiber loss of only 0 19dB km For this test ar OTOT EMS5X XL Optical Transmitter Rev x1 www olsontech com 24 rangement the SBS suppression is specified keeping in mind the SPM problems SBS suppressions between 13 and 16 5dBm are recommended for fiber links with lengths of 65km or more It is rec ommended to use the high SBS threshold settings gt 16 5dBm for distances below 65km and the lower SBS thresh olds for longer distances The SBS threshold can be selected in 0 5dB steps between 13 0 and 19 0dBm for optimisa tion of the SBS performance in individual applications and link characteristics LED Display The OTOT EM55X XL has a LED display 3 LED s for MODUL INPUT and OUTPUT and a LCD in combination with six menu buttons on the front panel for read and set parameters For normal operation all LED s should light green In case of warnings and alarms the responsible LED s turn into yellow or red and the LCD shows further ex planations Module Status Normal operation MODUL LED green Non urgent alarms MODUL LED yellow e fan 1 or fan 2 failure e Power supply 1 or power supply 2 failure e Laser cooler current gt 90 In this case the temperatu
21. modules for 100 240 Vac and 48 Vpc Web and SNMP Interface XL Version RS232 RS485 control interface X Version Built in Network Element Controller to poll slave devices like Olson Technology Optical Switches and Olson Technology Optical Amplifiers via RS485 a version only LC display and LED status indication General purpose I O interface for remote functions Very thin only 1RU design for mounting into 19 ETSI or JIS racks OTOT EM55XL Performance Parameter Units Specification Optical Properties Wavelength ITU Grid CH2 CH37 Wavelength Adjustment Range GHz 100 In Steps of 50 Optical Output Power dBm 2x 6 0dBm SBS Suppression dBm Threshold Adjustable Between 13 and 19dBm Laser Linewidth MHz 0 3 typical Electrical Properties RF Frequency Range MHz 47 1000 Flatness dB lt 0 75 47 860 MHz lt 1 5 860 MHz 1 GHz Version xxx D84 N77 Channel plan PAL D 84 NTSC 77 of Channels TV FM 4dB 84 0 0 77 0 0 QAM64 10dB Noise Bandwidth MHz 5 4 CNR Tx Rx dB 52 5 53 5 CNR Link 1 dB 52 0 53 0 CNR Link 2 dB 50 5 52 0 CNR Link 3 dB 49 0 50 0 CSO Tx Rx and Link 1 dBc 65 65 OTOT EM55X XL Optical Transmitter Rev x1 www olsontech com 11 Parameter Units Specification CSO Link 2 dBc 65 65 CSO Link 3 at Output 1 dBc 63 65 CTB dBc 65
22. shown or suppressed on I O port 0 The menu is shown in the picture below OTOT EMS55X XL Optical Transmitter Rev x1 www olsontech com 59 2 Settings 1 Microsoft Internet Explorer Datei Bearbelten Ansicht Eavoriten Extras 2 Qua O d A G Poem ferran O SS a LW DS Adresse E htrp 172 023 041 103 U5 00CO29 E4E 18 settings1 htm Or Status Parameter Voteges Setings Limis Lm s2 Evert Mask Properties ECHNOLOGY me Settings P BK EStOA SBS Suppression 165 dam Channel Distance 7 MHz Devices Update OMI 18704 4 RF Gain 00 gB OMi nominal 187 Configure Stots Laser Frequency 192800 GHz E AGC Mode Manual AGC om y A Optical Q Pi ON Evert Log ptical Output Power Statistics WO Port Mode Active high output v PP General Purpose VO Output Port Mask All alarms no warnings y Admiristrabico All ala wa Special alarmiwarning mask Server Update hoe Contig Save Config Restore El Fertg D Internet Figure 48 Setting the Alarm Warning Mask of the OTOT EM55X With this feature all warnings alarms of the OTOT EM55X can be either enabled or disabled by the user in relation to the output 0 port If the output mask is applied a notify message will be shown on the status menu screen OTOT EM55X XL Optical Transmitter Rev x1 www olsontech com 60 Setting the Channel Spacing of the Transmitted CATV Signal The OTOT EM55X provides a unique technology to minimize CSO distortions without requesting p
23. standard input level range is therefore 77 to 86dBuV per channel or 12 5 to 3 5dBm total input power In reality however the non guaranteed AGC range will be significantly larger typically about 5 8dB allowing total input level powers of about 14 5 to 1 5dBm to be accepted without input power alarms Example 2 If the transmitter is only operated with 60 unmodulated channels all with 80dByV the total input power level can be determined to be 11dBm therefore 1 5dB below the specified total RMS input power This level is still well within the AGC range of the transmitter If the modulation of the carriers is switched on however the power of each modulated carrier drops by about 4dB In this case the total power also drops by 4dB to 15dBm This 15dBm is even below the extended AGC range and an input level alarm will be generated In order to get back into the AGC range an increase of the input level to at least 9 5dBm unmodulated carriers is recommended which corresponds to 81 5dBuV in this example It would even be beneficial to compensate also for the drop of the total in put power due to the AM modulation which in most cases is about 4dB In this case an input level of 85 5dBuV is re quested per carrier If the input power is lower or higher than required the input LED lights yellow and a warning is generated If the in put power is missing the input LED lights red and an alarm is generated The AGC always tries to
24. transmitter with optical output power off This allows turning on the transmitter within less than 10 seconds in situations when a fast switching to a redundant transmitter is requested The optical power on off switching can be performed via the buttons on the front panel or via the Ethernet interface SBS suppression setting OTOT EM55XXL only The OTOT EMS5XL enables theuser to change the SBS suppression of the transmitter SBS Stimulated Brillouin Scattering is a well known problem in long distance high power transmission For extremely coherent optical light SBS occurs already at optical powers of around 6dBm 4mW in standard single mode fibers With electronic meas ures the coherency of the light can be degraded which increases the SBS threshold that means the optical power which leads to strongly perturbing SBS effects destroying the CNR and CSO performance especially in the lower transmis sion frequency band If the SBS threshold is increased another effect the SPM self phase modulation arises This effect degrades the CSO performance in the higher frequency band SPM depends on the total dispersion which is present in the transmission system SBS and SPM are both nonlinear effects in optical fibers and depend on e the launched optical power e the fiber properties especially fiber loss and mode field diameter e the link properties number of splices and total splice loss Both effects are worse with e higher optical power e
25. 65 Control Interface RS485 232 Interface Test Configurations Booster 1 Fiber In Line 2 Fiber Rx EDFA Length EDFA Length Tx Rx no no No no 0dBm Link 1 no 35km No no 0dBm Link 2 16dBm 65km No no 0dBm Link 3 13dBm 52km 13dBm 52km 0dBm RX with 7 pA VHz input noise current density EDFA s with 5dB noise figure RF input level at 80dBuV TV channel OTOT EM55X Performance Parameter Units Specification Optical Properties Wavelength nm 1548 1560 Optical Output Power dBm 2 x 6 0 SBS Suppression dBm Fixed threshold 16 5dBm Laser Linewidth MHz 0 65 typical Electrical Properties RF Frequency Range MHz 47 862 Flatness dB lt 0 75 Version xxx D84 N77 Channel Plan PAL D 84 NTSC 77 of Channels TV FM 4dB 84 0 0 77 0 0 QAM64 10dB Noise Bandwidth MHz 5 4 CNR Tx Rx dB 52 5 53 5 CNR Link 1 dB 51 5 525 CNR Link 2 dB 49 0 51 0 CNR Link 3 dB 46 5 48 5 CSO Tx Rx and Link 1 dBc 65 65 CSO Link 2 dBc 65 65 CSO Link 3 at Output 1 dBc 63 65 CTB dBc 65 65 Control Interface Ethernet 10 100 Interface OTOT EM55X XL Optical Transmitter Rev x1 www olsontech com 12 Test Configurations Booster 1 Fiber In Line 2 Fiber Rx EDFA Length EDFA Length Tx Rx no no no no 0dBm Link 1 no 35km no no 0dBm Link 2 16dBm 65km no no 0dBm Link 3 13dBm 52km 13dBm 52km 0dBm RX with 7 pA VHz input noise current density EDFA s
26. 70 RF Gain 00 Y da OMI nominal Configure Siots Laser Frequency GHz ae mm AGC Mode on unmodulated carriers pee Optical Output Power v Sietistice VO Port Mode output v F General Purpose YO Output Port Mask no warnings Y Administrabon SNMP Contigurabon Server Update Contig Save Config Restore Figure 42 Setting the OMI Total RMS on the OTOT EM55X With software release 2 0 the OMItotrms OMI ms in the figure beyond is shown in In previous software releases OMliotrms Was shown relative in dB to a nominal value The display in enables an easy comparison with the graphs as shown in Figure 18 For that reason OTOT EM55X application software release 1 12 and later supports this fea ture Notes e OMI nominal refers to a factory setting and cannot be changed by the user e OMlorms Setting is only relevant in AGC on mode e The setting range for OMLotrms might change slightly from device to device due to production tolerances OTOT EM55X XL Optical Transmitter Rev x1 www olsontech com 53 Setting the RF Gain AGC off mode only The picture below shows how to adjust the RF gain in order to optimize the transmission performance in terms of CNR CSO CTB and BER 3 Settings 1 Microsoft Internet Explorer E x Datei Bearbelten Ansicht Eavoriten Extras 2 az 8 2 a 5 P Gan 220 Pam from O BS 2 10 3 dress 4 ntyp 172 023 041 103 U5 OOCO29EE4E18 settings1 html v E wechsenzu r s 1SON Len
27. 8 angle default FC APC optical connector JDS standard default Ordering Information Base Model Version Freq Plan Optical Conn RF Conn Power Supply N77 NTSC 2 SC APC F Front of Unit 230 1x 100 240V 4c OTOT EM55 PAL84 PAL 3 FC APC R Rear of Unit 48 1x 36 72Vpc N77 NTSC P P trontoruni PUR 7200024040 A ae PAL84 PAL 3 FC APC R Rear of Unit a 230 48 Mixed 230V ac 48Vpc General Description Introduction The optical transmitter OTOT EM55X represents a family of externally modulated 1550nm DFB laser transmitters These products have been developed to fulfil the requirements of modern Hybrid Fibre Coax networks for the trans mission of CATV cable phone and cable data signals Two base versions are available The Model OTOT EM55X version is intended for applications with a fiber length lt 50km and features a SBS threshold of 16 5dBm a narrow line width laser 0 65MHz dual 6dBm optical outputs and a RS485 interface for EMS ele ment management systems The Model OTOT EMS5XL should be used in applications with a fiber length exceeding 50km This version offers a SBS threshold which can be adjusted between 13 and 19dBm a very narrow line width laser 0 3MHz dual 6 0dBm optical outputs ITU grid compatible wavelength which can be adjusted by 100GHz a 10 100 Ethernet Webserver and SNMP interface for EMS NMS element network manage
28. E SE A a ia 67 Figure 54 Properties Menu of OTOT EM55X cccccicccccconocononnnnnanononononononnnononon oro nnnnnnon one naar nen non one aran an nn non one aran an nana 67 OTOT EMS55X XL Optical Transmitter Rev x1 www olsontech com 3 Control of Other Devices with the Ethernet Webserver HTTP Interface oooconconicnncnncnoonoonconconcnnnonnonconncononnononcn non non ronnrnnnos MAINE 1 El AE AE EA EE tasadores Tro bleshooting di T I TEE n E TAE OTOT EM55X XL Optical Transmitter Rev x1 www olsontech com 4 Safety Instructions Attention Please read the instructions completely and carefully before installing or operating the unit All operation steps should be carried out in the prescribed sequence Using the equipment improperly can cause serious danger for persons or damage the devices INVISIBLE LASER RADIATION DO NOT STARE INTO BEAM OR VIEW DIRECTLY WITH OPTICAL INSTRUMENTS CLASS 1M LASER PRODUCT MAXIMUM OUTPUT POWER 15 6 mW WAVELENGTH 1550nm IEC 60825 1 08 2001 OTOT EMS5X XL Optical Transmitter Rev x1 www olsontech com Parts List This document contains the description for the following units Transmitter Unit Modular internally modulated 1550nm optical trans mitter 1 0 Ports Optional Power Supply and Fan Module power supply fan module 100 Vac 240 Vac power supply fan module 36 Vpc 60 Voc fan only module Optical Interface SC APC optical connector
29. FC networks and should not be used in normal operations of HFC networks In CXMA measurements with AGC on the RF signal is increased by about 3dB due to the typical 100 duty cycle in cross modulation measurements This leads however to rather poor CXMA values measured In order to compensate for the increased gain the AGC on mode for modulated carriers has been implemented Compared to the AGC on mode for unmodulated CW carriers the gain is decreased by about 3dB for measurement purposes only Mode AGC off user adjustable In this mode which is for experienced users only the user has the flexibility to change the gain of the internal RF am plifier by 3 6dB according to his individual requirements This adjustment however changes the RF input sensi tivity The OMLotrms is measured for the applied input signal and selected gain and can be monitored on the LCD or via the Ethernet interface This mode should only be used with great care since the automatic protection against over modulation as given in the AGC on mode is lost ITU frequency adjustments in DWDM applications OTOT EM55XL only The OTOT EM55XL offers the feature to tune the optical frequency respectively wavelength of the transmitter by 100 GHz in steps of 50GHz in order to enable DWDM applications The tuning can be performed via the buttons on the front panel or via the Ethernet interface Optical Power On Off The transmitter can be configured as a back up
30. M55X does not show any alarm the slave OTOT EM55X should be sleeping in stand by operation since the I O port No 0 level will be in low state e Ifthe master alarm faces an alarm situation it will set the I O port No 0 level to high state therefore awakening the slave transmitter from sleeping stand by mode e Ifthe cable between the master OTOT EM55X and the slave is cut or removed the slave device will go from sleeping stand by mode into normal operation due to the internal 100kOhms pull up resistor e Ifthe power supply from the master OTOT EM55X is removed completely the slave device will go from sleeping stand by mode into normal operation immediately This situation requires a 10kOhms pull up at the side of the slave OTOT EM55X in hardware release 2 0 as described beyond Note The slave transmitter might need up to five 5 seconds to provide a high performance output signal when starting from stand by For that reason the master transmitter will after an alarm situation create an I O port high signal to start the slave transmitter and will however operate in normal mode as far as possible for five seconds until it switches into stand by mode The purpose of this method is to make the interruption of the signal as short as possible Setting an Alarm Warning Mask for I O Port 0 The OTOT EM55X from NEC appl SW rel 1 9 1 allows the user to set an alarm warning mask which determines whether an warning or alarm is
31. Notifies Bootloader running no Appl firmware Alarm enabled v see Note 2 Connection lost no response from device Alarm enabled see Note RF signal loss Alarm enabled Power supply left failure Warning enabled Power supply right failure Warning enabled vw Fan left failure Warning enabled iv Fan right failure Warning enabled vw Laser temperature high warning Warning enabled vw Laser temperature low warning Warning enabled v Optical power is off Notify enabled The device is starting up Notify enabled w Redundant device has been activated Notify enabled AGC is off Notify enabled v see Note D SBS is off Notify enabled see Note D Event mask set for this device Notify enabled v see Note 92 Notes 1 This event does not produce an SNMP trap 2 This event is not maskable _change Y E Fertig Internet Figure 51 Setting the Event Mask for the Webserver and SNMP Interface of OTOT EM55X With this feature all warnings alarms of the OTOT EM55X can be either enabled or disabled by the user in relation to the LED s on the front panel the Webserver status screen and SNMP interface If the alarm warning mask is applied a notify message will be shown on the status menu screen Note If the NEC software of a transmitter is upgraded to Rev 1 9 or later the OTOT EM55X firmware might not sup port the alarm warning flag mask which means that the LED s on the front panel might not reflect the alarm warning masks A
32. Optical Amplifier moso 4 mr 5 OTOT EMSSXL ases R545 ii E LAN WAN TCPAP Subrack 4 i je E a E HTML Browser SNMP EMS Server Figure 4 OTOT EM55X Interfacing with Other Equipment and a SNMP EMS In this figure the OTOT EMS5XL with embedded NEC upper right corner is connected to other Olson Technology devices via the RS485 interface In the example there is an optical amplifier without embedded NEC in 19 1RU housing similar to the OTOT EM55X and in total four sub racks interfacing to the RS485 bus A variety of Olson Technology devices such as EDFA s optical switches optical transmitters and receivers can be mounted on these subracks All of these connected devices only provide RS485 slave interfaces since the NEC of the OTOT EM55XL is the dedicated RS485 bus master polling all other devices The NEC SNMP Proxy Agent polls all devices and trans lates this information to Ethernet HTTP and Ethernet SNMP In the example there is a PC e g notebook with a HTML Browser such as Microsoft Internet Explorer Netscape or Opera is connected If the Browser accesses the IP address of the NEC which can be set in order to fit to the require ments of a LAN the Webserver within the NEC responds and displays information of all polled devices on the Browser screen Using the PC it is possible to get access to data of all devices as well as to change settings of all de v
33. SNMP Configuration Server Update max 100 chars contaran iii Contig Save Miscellaneous Contig Restore Change ql Fersg Internet Figure 54 Properties Menu of OTOT EM55X The miscellaneous button can be used to request either a e reset to factory settings and cold start e reset of the transmitter cold start Note Be very careful in executing these reset commands since they force cold start situation where the transmitter might need about 30 seconds to get back to full performance properties Control of Other Devices with the Ethernet Webserver HTTP Interface One of the nice features of the OTOT EM55X transmitters with embedded SNMP proxy agent and Webserver NEC is that also additional Olson Technology equipment can be managed or monitored through this circuitry either e via the push buttons LCD field of the OTOT EM55X e the Webserver HTTP e SNMP interface In order to use this function additional Olson Technology equipment has to be connected to the RS485 master inter face of the NEC by using a standard RJ 45 patch cable All Olson Technology subracks provide two RJ 45 sockets lo cated on the interface card on the right hand side of the sub rack Other Olson Technology 19 1RU devices EDFA s OTOT EM55X XL Optical Transmitter Rev x1 www olsontech com 67 and optical switches provide two RS485 slave interfaces on the rear side of the equipment The two RS 485 interfaces are typically used for daisy chaining
34. TU wavelength OTOT EM55XXLa only Standby Change or show the Standby mode Parameters Output power Shows the optical Output power RF Input power totalRMS Shows the el total RMS input power If the el input power is out of range for the selected OMI or Gain settings an input warning will be generated and the showed value is not valid RF Input power nominal Shows the nominal el total RMS input power for specified operation RF Gain AGC mode Shows in AGC mode the actual Gain of preamplifier related to nominal If the el input power is out of range for the required OMI setting a input Warning will be generated and the showed value is not valid OMI total RMS Man mode Shows for Manual mode the OMI total RMS related to nominal If the el input power or the selected gain is out of range for a measurable OMI value an input warning will be generated and the showed value is not valid Laser Current Shows the Laser Current related to BOL Cooler Current Shows the Cooler Current related to maximum Module Temperature Shows the internal temperature for actualization of values just go back to the OVTX menu and enter again Voltages Show the device s internal voltages Properties Show device properties like software and hardware releases and dates Miscellaneous Generating a reset or a reset to default settings Aliasname Change device s aliasname Controlling the OTOT EM55X XL via a NEC In general the OTOT EM55X XL is connected to a NEC
35. XL is equipped with 4 data interfaces at the rear side e RS232 fora local set up of the NMS Interface e RS485 master for polling other Olson Technology equipment like EDFA s or optical switches and translating this information to the Ethernet interface HTTP and SNMP e Ethernet 10 100Mb s supporting SNMP and Webserver HTTP protocols for interfacing to a EMS or NMS e Optionally General purpose I O interface The OTOT EM55X XL is equipped with two RS485 slave interfaces for interfacing to an EMS or NMS Additionally there are two output ports available for simple alarm or warning messaging Plug in power supply fan modules for different input voltages are available for 100 240 Vac and 36 60 Vpc Each module can be simply removed during operation without disturbing the operation of the transmitter by removing two screws The interface configuration for Element Management or Network Management systems is shown in the next two fig ures for the OTOT EM55XL with embedded NEC network element controller SNMP Proxy Agent and the OTOT EM55X RS485 Vo vo RS485 RS485 vo Kaier RS232 Ethernet 45 0 RS232 dius lavo 0 Level converter RS485 master RS232 Ethernet vo NEC SNMP Proxy Agent Webserver RS485 slave Model OTOT EM55XL Model OTOT EM55X Figure 3 EMS NMS Interface The OTOT EM55XL versions ref to Figure 3 left contain an embedded network element controller NEC which works as a SNMP Proxy Agent All eq
36. al Transmitter Rev x1 www olsontech com 15 The OTOT EM55XL uses an 8 pin Mini DIN connector for external Input Output handling The connector is located on the backside of the device near to the NMS RS485 Master connector 2 3 gf gt O ome OO O G A ra N S A O JO of ey J O nata In Out RS485 M aste RS232 Ether et 10 100 Mbps Figure 8 Model OTOT EM55XL Rear Panel Connectors Figure 9 shows the view on the 8 port mini DIN connector Figure 9 8 Port Mini DIN Connector The mini DIN connector pins are used as described in the following table Pin Number Function in TOT EM55X of mini DIN Comments connector GND 2 Ground 5 1Voc 5 Max 80mA protected by a serial voltage tider no load condition 1 PTC lt 50Ohms in NEC hardware release 2 1 Fuse lt 6Ohms from NEC hardware release 2 2 Input Outp t No 0 Used for redundancy switching feature input port or as alarm output from hardware release 2 0 and 5 software release 2 0 por Input Output No 1 Y Either Input or Output configurable by Software Input only No 2 3 Input mode configurable by Software Input only No 3 8 Input mode configurable by Software Input only No 4 4 Input mode configurable by Software Input only No 5 6 Input mode configurable by Software Notes On pin 1 there is a 5 1Vpc G ES supply voltage available for feeding an external interface box which could contain o
37. bf and upload it After a succesfull upload the restorable devices are shown above IMPORTANT NOTE Dont use comma and percent characters in pathnames II Durcheuchen Upload Config File 0 o O and allasname too Figure 36 Config Restore Menu In case configuration settings of a device should be transferred to another device e g in a different system the mark has to be deselected Only the configuration settings are then applied the aliasname and slotnumber of the device is not altered Using the Upload Config file button a local file can be loaded into the NEC memory and further on be used for restoring configuration settings as described OTOT EMS55X XL Optical Transmitter Rev x1 www olsontech com 47 Status Menu The figure below shows the status menus of the OTOT EM55X 2 Status Microsoft Internet Explorer Datei Bearbeiten Ansicht Eaworiten Extras 2 Quo O i AG Aann fran O S 2 LB BS este B http 172 023 041 103 U5 DOCOZ9EE4E18 statas html 1SON Status Parameter Voteges Sefing Limts Lints 2 Evert Mask Properties T Status Description E oa Everything ok no errors or warnings P oresma Devices Update IA Contipae Slots Logout Evert Log Statistics General Purpose vO Adreristrabon 1 aj ald v E wedsanzu urs SNMP Contigs ston Server Update Contig Save Contig Restore Figure 37 Status Menu of OTOT EM55X The actual status of the transmitter is
38. ctive low In case of any alarm which arises in case any of the Output active low alarm thresholds has been reached or due to an internal error the 1 O port becomes low Active high In case of any alarm which arises in case any of the Output active high Default factory setting alarm thresholds has been reached or due to an internal error the I O port becomes high Redundant master irre versible In case of any alarm which arises in case any of the alarm thresholds has been reached or due to an internal error the I O port becomes high In case the alarm con dition disappears the transmitter will remain in the alarm state until it is reset manually This mode is im plemented to prevent a frequent switching into ac tive stand by mode of two redundant transmitters Output active high This port should be connected to the cor responding I O port No 0 of the redun dant transmitter which is set into redun dant slave mode OTOT EMS55X XL Optical Transmitter Rev x1 www olsontech com 58 Mode of operation Description I O port No 0 Redundant master fallback In case of any alarm which arises in case any of the Output active high alarm thresholds has been reached or due to an internal This port should be connected to the cor error the I O port becomes high responding I O port No 0 of the redun In case the alarm condition disappears the transmitter dant transmitter which is set int
39. e on rear side 2 RF monitor output 3 Status LED s 4 Liquid Crystal Display 5 Push button field for local set up of transmitter 6 7 Optical connectors optionally available on rear side Rear Panel The rear panel provides several field replaceable units Y my i 5 212115 ol_ Riy O TE Y Y as ls u e s Figure 14 Model OTOT EM55X Rear Panel Drawing Item Function 1 RF input optional located on front panel OTOT EMS55X XL Optical Transmitter Rev x1 www olsontech com 19 2 3 optical fibre outputs optional located on front panel Not used in OTOT EM55X cover T O ports RS485 interface RJ 45 female a versions master b versions slave RS232 interface SUB D9 male a versions Ethernet interface b versions RS485 slave interface RJ 45 female Sol uial A 2 green LED s Ethernet link amp data a versions only 10 11 power supply fan modules field replaceable Power Supply and Fan Modules There are two different types of power supply and fan modules available for the OTOT EM55X and OTOT EMS55XL All of them can be either mounted on the left hand or right hand side It is possible to replace or exchange all of the modules during operation This offers a big flexibility to the end user in order to customise the OTOT EM55X XL ex actly to the actual needs The necessary outlets for the power supply modules have to be di
40. e warning limit 2 TEC_HIGH_WARNING The Peltier current of one laser is higher than the warning limit 3 RF_INPUT_LOW_WARNING RF signal is lower than the warning limit 4 POWER_SUPPLY_WARNING One of two power supplies fails obsolete 5 FAN_LEFT_WARNING The left fan looking from device s front side fails 6 FAN_RIGHT_WARNING The right fan looking from device s front side fails 7 OUTPUT_PWR_HIGH_WARNING Optical output power is higher than the warning limit 8 RF_INPUT_HIGH_WARNING RF signal is higher than the warning limit 12 POWER_SUPPLY_LEFT_WARNING The left power supplies looking from device s front side fails 13 POWER_SUPPLY_RIGHT_WARNING The right power supplies looking from device s front side fails 14 OMI_OR_RFGAIN_LOW_WARNING The calculated RF gain if AGC on or the calculated OMI if AGC off is lower than the warning limit 15 OMI_OR_RFGAIN_HIGH_WARNING The calculated RF gain AGC on or the calculated OMI AGC off is higher than the warning limit 16 3 3V_LOW_WARNING Supply 3 3V is lower than the warning limit 17 3 3V_HIGH_WARNING Supply 3 3V is higher than the warning limit 18 5V_LOW_WARNING Supply 5V is lower than the warning limit 19 5V_HIGH_WARNING Supply 5V is higher than the warning limit 20 5V_LOW_WARNING Supply 5V is lower than the warning limit 21 5V_HIGH_WARNING Supply 5V is higher than the warning limit 22 12V_LOW_WARNING Supply 12V is lower than the warning limit 23 12V_HIGH_WARNING Supply 12V is
41. ei Bearbeiten Anskht Eavoriten Extras 2 J y r L xs Qu AO Asam roo O 8 2 a VAs Adresse 4g htp 172 023 041 103 US DOCO2SEE4E18 settings 1 htm E wedsenzu Like Or ECHNOLOGY me Settings P ex esoa SBS Suppression 16 5 dBm Channel Distance 7 MHz Devices Update OMI 1870 RF Gain 00 g8 Rackview OMI nominal 187 9 Configure Sits Laser Frequency 192800 GHz AGC Mode CW AGC on unmodulated carriers Logout Evert Log Optical Output Power ON pa Statistics VO Port Mode Active high output PF General Purpose vO Output Port Mask All alarms no warnings Y Administration SNMP Contiguration Server Update _Change Config Save Contig Restore 8 Fersg O internet Figure 40 Settings Menu of OTOT EM55X OTOT EM55X XL Optical Transmitter Rev x1 www olsontech com 51 Changing the SBS Threshold The picture below shows how to change the SBS suppression threshold between 13 0 and 19 0dBm for the OTOT EMS55XL be aware that the OTOT EM55X has a fixed SBS threshold of 16dBm It is important to understand that the SBS setting has a major impact on the transmission performance especially for very long fiber transmission e g 100km and high frequencies 860MHz The SBS suppression can be adjusted in 0 5dB steps calibrated From NEC application software release 1 11 the adjustment can be carried out in 0 1dB steps which are in this case inter polated the 0 5dB steps are still calibrated 2 Setting
42. er e Verify before trap If enabled via SNMP Get Request the sysDescr OID of the host having the Trap Verify Receiver IP address see below is executed before the pending traps are sent Only after successful reply all OTOT EMS5X XL Optical Transmitter Rev x1 www olsontech com 42 pending traps are sent For permanent on links e g LANs disabled is the recommended setting For other links enabled is the recommended setting e Trap verify receiver Here the IP address of the receiver verifying the link can be entered In many cases it might be one of the trap receiver addresses as entered in 0 However in dial up links optionally the IP address of a receiving modem e g ISDN router could be used instead of the IP address of a real trap receiver e Timeout A timeout time between 30 and 600 seconds might be specified in order to detect a link error The NEC E is waiting the specified time for replies on the sysDescr SNMP Get Requests After this time all pending traps are sent regardless of a reply has arrived or not Important In this case of timeout the traps sent and the traps discarded counter see below are incremented e Trap Accumulation Time It is possible to collect traps during the Trap accumulation time which can be set between 0 and 60 seconds until they are transmitted all together This feature helps to reduce connection fees in dial up connections In the following case
43. figuration Contig Save Contig Restore dEl Fertig internet Figure 27 Statistics Page OTOT EM55X XL Optical Transmitter Rev x1 www olsontech com 35 General Purpose l O ports of Server NEC optional THE NEC E provides optionally general purpose I O ports for remote control functions By selecting this item in the Server Menu a display as shown below will appear J Statistics Microsoft Internet Explorer Datei Bearbeiten Ansicht Favoriten Extras 2 a Gane a AO Posten fran O 2 a a l htp 172 023 041 103 serv_stats html Traps Sent P wesioa Traps Pending o AER Traps Discarded o Reset Counters Logout Evert Log abstcs PP General Purpose LO Administration SIMS Configuration Server Update Contig Save Config Restore Figure 28 I O Ports Menu In the I O mode column the mode of both the I O port and all 4 input only ports can be set Figure 29 shows the available options for the I O port OTOT EMS55X XL Optical Transmitter Rev x1 www olsontech com 36 3 General Purpose I O Microsoft Internet Explorer x Datei Bearbeiten Ansicht Eavoriten Extras 2 r Qua DOH Aa ferron O Dr a aa Adresse 8 http 172 023 041 103 gpio htm Gr General Purpose VO ECHNOLOGY me VO Level P aesioa Port Ho 4 Devices Update Port to 2 10 Description Port No 1 pret bie 2 Port Mo 3 Port No 3 Configure Shots Server Port Ho 4 Por No 4 PEEEE seat Portes
44. green and yellow fields might be different in order to obtain a good reading especially of the green field OTOT EM55X XL Optical Transmitter Rev x1 www olsontech com 49 Internal Voltages The voltages menu displays all internal supply voltages like shown below 3 Parameters 2 Microsoft Internet Explorer Datei Bearbeiten Ansicht Favoriten Extras 2 Ora ix a Pon frre O 3 am JAS Adresse 8 ntp 172 023 041 103 U5 DOCO29EE4E 18 parameters2 html E wechsen zu Links Or Status Parameter Vokeges Settings Lats Lms Evert Mask Pr ECHNOLOGY me Votages BKESIOA Oy alk P Devices Update wv a v Av A mm Configure Slots ov DN y anv Ry Logout ln ee Evert Log eS i PP General Purpose tO Adirerestration SNMP Configuration Server Update Contig Save Contig Restore Figure 39 Internal Voltages Menu of OTOT EM55X For proper operation the black vertical bars should meet the green fields Note the thresholds for alarms are not ad justable by the user but are factory settings only OTOT EM55X XL Optical Transmitter Rev x1 www olsontech com 50 Settings Menu This menu allows changing some basic adjustments of the OTOT EM55X Note Some of the settings require certain hardware and software releases Please refer to the manual supplied with the transmitter if some options are different or missing compared to this picture 2 Settings 1 Microsoft Internet Explorer O X Dat
45. h CABLEwatch NMS pendent from CABLEwatch NMS Rem A slot number must be assigned to all moduls without automatic slot detection e g all 19 inch components This has to carried out by Rackview Configuration The slot number acts as a reference number for all SNMP accesses Of all modules without slot assignment only one will be dis All modules without slot assignment are dispayed in SNMP played in SNMP with slotnumber 50 All others are not with the slot numbers 51 52 shown until they get a slotnumber assigned available from NEC E Software Release 1 11 Variables in the RFC1213 system group are write protected Variables in the RFC1213 system group are writeable it is possible to write sysLocation and sysContact indirectly however with restricted length not 256 Byte via the variables neLocationCity und NeLocationStreet of the OLSON TECHNOLOGY HFC862 HMSNE MIB ahmsne mib HMS Traps Compliance see also SCTE HMS ALARMS MIB und SCTE HMS COMMON MIB Minor Compliant 1 Full Compliant hmsAlarmEvent Trap is sent with ENTERPRISE OID alarm As demanded by HMS MIB hmsAlarmEvent Trap is sent sIdent 1 3 6 1 4 1 5591 1 2 instead of OID scteHmsTree with ENTERPRISE OID scteHmsTree 1 3 6 1 4 1 5591 1 1 3 6 1 4 1 5591 1 as demanded by HMS MIB hmsColdStart Trap is sent to RFC1215 with ENTERPRISE As demanded by HMS MIB the hmsColdStart Trap is sent OID commonldent 1 3 6 1 4 1 5591 1 3
46. hes off and all front side LED s light yellow for a short time in order to enable an LED test Afterwards all LED s should be green and the microcontroller should begin to test the laser and optical modulator During this test which takes about 70 seconds the optical output power on both outputs varies between zero power and about twice the nominal power Poutnom 3dB Afterwards with no RF input signal applied the output power may vary about 1 dB on both outputs since the CSO control loop which fixes the bias point of the modulator and consequently the output power only works precisely with a RF input signal applied After this procedure the LED s should monitor the status of the transmitter Setting appropriate operating conditions for the OTOT EM55XL XL Applying an Appropriate RF Input Signal With an appropriate input signal the transmitter starts to search for the optimum bias point of the LiNbO modulator After about 30 seconds the optical output levels of both outputs are stabilized Connect a fiber optic cable with an ap propriate cleaned connector to one of the optical outputs in order to feed a HFC network Keep in mind that the OTOT EM55xX is according to IEC EN 60825 a laser class 1M product which requires adequate safety precautions to avoid hazards to people working with the OTOT EM55X There are 3 AGC on off RF modes that can be selected in order to operate the OTOT EM55X OTOT EMS55X XL Optical Transmitter
47. hold of the OTOT EMSSXL cocccociccococononnnnonnnnononnnnnnonncnonnnnon nano ncnonnnnnnononc cn cnnnnn 52 Changing the OMTiotims AGC on modes only oo eeeeescssessseceeceeeececsecsessesaesceaceceacessecenecnscesueenscseseceeceececseceessesaeaaeateateeeeeetees 53 Figure 42 Setting the OMI Total RMS on the OTOT EMSSX cococciicinccnoninononnnncnnononononannnnnonononn on on nn non cnn nn oran can cnnnnns 53 Setting the RF Gain AGC off mode only oo eceeeeccecesesesseesesceseesescenecnseccnecneceeecsecsesseeessesaeeaceasaceaeeeeescneceeeeceesseeceesseeaeeataes 54 Figure 43 Setting the RF Gain on the OTOT EMSSX coocaicicnccononinonocnnncnnononononnnnnnnononono nano nen on ono na rn anne nono n narran canon 54 Changing the ITU frequency of the OTOTREMSSX LL ococccococonononononononononnnnnononononannnnncnonononn nn ono rn onnno nana on nan onana nena anna anaa narran ninas 55 Figure 44 Changing the ITU Frequency of the OTOT EMSSXL ccococnccccccoconcononnnnconononnccncononnononannnonnnnnn non nonnnnanncnnns 55 Changing the AGC Modest did a 56 Figure 45 Selecting the AGC Mode of the OTOT EMS55X docccococonoinnonononononannnnnonononona nooo cn nononona nana nn non onanaonan annonces 56 Changing the Optical Output Power Mode ou cece aE T T AELE RE OAE OSORA 57 Figure 46 Changing the Optical Output Power Mode of the OTOT EM55X oo cceeesscceseeeseeeeeeeseeeeeaeeeeaeeaeeeenees 57 Changing the VOP Mod cir seiecsesactscsssnsgceisss spssnans ensue s
48. ia a NEC enaa n r eaa A SE E KE o EER EEEE EREA a EERE OE EREE 27 Communicating with the NEC ta di AA A we Suna cntedonss 28 Figure 20 Display of Webbrowser Microsoft LE cc cccccscseesssseeceecsesenseessesecseseeeesseessnsesecessesaeanseseseseesanan 28 Figure 21 Log in to the NEC Server Figure 22 Display of Login Menu Devices Updater id e ad ath e dd da dad odo e deh Wee bot Menthe SA Figure 23 CAS a ORE Be Figure 24 Server Properties Figure 25 Event LOL eet Figure 26 Trap StatiStiCs TAN NON Figure 27 Statistics Page ninia ease aeons bit aan ena 35 General Purpose I O ports of Server NEC optional ccecssssesscesseceeecsseseneceeceeececsessesaesessesaesaesceaceaeaeenesaeneenseneesetees 36 Figure 28 N O Ports Men intacta tidad bd 36 Figure 29 Available Modes of Operation for the I O Port ooonnicnininnicnoncnonannnnnnconanonononon ocn ononnononon ocn onnananonon cra cucinn 37 Figure 30 Available Modes of Operation for the Input only Ports oooonocncncncnnnononnnnnnncnnccanacnn canon nnnonnnnnnnanconnns 38 Examples of 1 O port Status la tas 38 Server Administrations iaieineea s e E A A A A A Mn AAA A tee aens 40 Figure 31 Server Administration Menu sesssesesssesesesssesesesesesesesesessseeesesosecesssseeesessseesssenesesesesenenesesenessseseneseseses 40 SNMP Configuration ati isis 41 Figure 32 SNMP Configuration Menu ocicoccononiconononnnanononononnnnnn
49. ices Simultaneously a SNMP EMS Element Management System such as Cablewatch from Olson Technology is option ally connected to the Ethernet interface This connection can be realized using a LAN or a WAN between the EMS and the OTOT EMS55XL This EMS corresponds with the OTOT EM55X using SNMP simply network management pro tocol The OTOT EM55XL supports at the same time HTTP and SNMP on the Ethernet interface The EMS can be imple mented to enable a more sophisticated alarm management with alarm filtering alarm acknowledgement and automatic messaging through Emails or SMS etc OTOT EMS55X XL Optical Transmitter Rev x1 www olsontech com 10 Technical Specifications Applications Leo mi Electrical to optical conversion of multichannel CATV signals like AM VSB FM and QAM signals uP Enables the usage of optical amplifiers EDFA s as boosters or repeaters in order to realize large scale HFC J A sini networks LA e pure Excellent performance in order to realize links exceeding 100km XL Version Features Low noise narrow linewidth CW DFB laser ITU Grid wavelength XL Version Wavelength adjustable 100 GHz XL Version Electro optical modulator with 2 optical outputs Automatic RF gain control CW video manual mode 2 6dBm optical outputs Adjustable SBS threshold up to 19dBm to increase transmission distance XL Version Front panel RF test point 20 dB Dual hot plug in power supply
50. igh optical power and microwave signals it is not admitted to open the transmitter for personal safety and EMC reasons Do not open the transmitter In case of other than fan power supply failures the transmitter has to be sent to Olson Technology for maintenance End of Manual OTOT EMS55X XL Optical Transmitter Rev x1 www olsontech com 68
51. ilot tones By set ting the channel spacing to the correct value the CSO control loop will operate with utmost performance The picture below shows how to set the channel spacing 2 Settings 1 Microsoft Internet Explorer Datei Bearbelten Ansicht Eavoriten Extras 2 Gan ix 2 ahn feron E 2 2 w JO LD rege E tp 172 023 041 103 45 00CO29EE4E 18 settings1 html v E wedeenzu tr s Links 2 Evert Mask Properties presion SBS Suppression 165 Y dam Channel Distance 7 MHz Devices Update OMI 1870 RF Gain 5 a de Rackview OMinominal 187 e Contigure Skts Laser Frequency 192600 GHz AGC Mode Manual AGC om y ER Optical Output Power ON e Statistics VO Port Mode Active high output v P General Purpose VO Output Port Mask All alarms no warnings v Admsrestraton SNMP Contguraton cove y s orange Contig Save Contig Restore 2 Fervg internet Figure 49 Setting the Channel Spacing of the OTOT EM55X NTSC channel plans in general provide a 6MHz spacing PAL D channel plans in general show an 8MHz spacing In Europe also 7 MHz spacing is used in some channel plans OTOT EM55X XL Optical Transmitter Rev x1 www olsontech com 61 Setting an Event Mask for the Webserver and SNMP Interface The OTOT EM55X from NEC appl SW rel 1 9 1 allows setting an event mask which determines whether a warning or alarm or a notification is shown or suppressed in the Webserver status screen as well as
52. in the Web browser e g MS Internet Explorer 2 Status Microsoft Internet Explorer E Ex Datei Bearbelten Ansicht Eavoriten Extras 2 r Qaia 7 x ae 7 Suchen Fi Favoriten Osos pami i 3 dEl htrp 172 023 041 103 U5 DOCO29EE4E18 status html v E wechsein zu ECHNOLOGY nc Status Desctiption devices or Everything ok no errors or warnings PoEsia Devices Update E Configure Skts Logat Evert Log Stotietecs PP General Purpose LO arren ton SNMP Configuration Server Update Configuration Contig Save Contig Restore Figure 20 Display of Webbrowser Microsoft I E Selecting Devices all devices are shown which are connected to and recognized by the NEC In the example above only one device is connected to the NEC the OTOT EM55X which is in the case an OTOT EM55XL This equipment is currently displayed in the main window of the browser At the same time Status is highlighted in the main window That means the main window currently displays the status of the OTOT EM55XL By selecting a different menu in the main window Parameters Voltages Settings Limits Limits 2 and Properties of the OTOT EM55XL can be selected For location of a device connected to the NEC the flag in front of the devices name can be used Pressing this flag ini OTOT EM55X XL Optical Transmitter Rev x1 www olsontech com 28 tiates the module LED to blink for 10 seconds 3 http 172 023 041 103 US 00C029EE4E18 setmark ht
53. larm Flags Index Flag Description 0 TEC_HIGH_ALARM Peltier current is higher than the alarm limit Laser switched off 1 OUTPUT_PWR_LOW_ALARM Optical output power is lower than the alarm limit 2 RF_INPUT_LOW_ALARM RF signal is lower than the alarm limit 3 OUTPUT_PWR_HIGH_ALARM Optical output power is higher than the alarm limit 4 RF_INPUT_HIGH_ALARM RF signal is higher than the alarm limit 5 OMI OR RFGAIN LOW_ALARM The calculated RF gain if AGC on or the calculated OMI if AGC off is lower than the alarm limit 6 OMI OR RFGAIN HIGH ALARM The calculated RF gain AGC on or the calculated OMI AGC off is higher than the alarm limit 28 MODULE_TEMP_LOW_ALARM Module temperature is lower than the alarm limit 29 MODULE_TEMP_HIGH_ALARM Module temperature is higher than the alarm limit 30 RESERVED Reserved for the NMS Controller Do not use these bits OTOT EMS55X XL Optical Transmitter Rev x1 www olsontech com 63 Index Flag Description 31 RESERVED Reserved for the NMS Controller Do not use these bits Flags in bold letters can be controlled via the limits menu Warning Flags Index Flag Description 0 OUTPUT_PWR_LOW_WARNING Optical output power is lower than the warning limit 1 LASER_HIGH_WARNING The laser current of one laser is higher than th
54. ll be shown in the main window Up to 64 entries in the event log page are displayed If this number is reached the oldest entry is deleted in order to provide space for a new entry OTOT EM55X XL Optical Transmitter Rev x1 www olsontech com 34 Trap Statistics The statistics of sent pending and discarded traps is shown in these fields and allows to check whether the SNMP trap settings are set correctly and or the communication with the trap receiver works properly e Traps sent The number of trap packets which have been sent by the NEC Rem Trap packets are counted example In case of 4 registered trap receivers the counter is increased by 4 for each trap event e Traps pending The number of trap packets which the NEC E has still to send e Traps discarded The number of trap packets the NEC E has discarded The counter is incremented in case of any discarded trap that means in any case of NEC E trap memory overflow or not in advance via SNMP Get Request verified traps Qatei Bearbeiten Ansicht Favoriten Extras 2 Statistics Microsoft Internet Explorer E fay Eg 0d Gan O i AO Perm ferron O Dry a a a htrp 172 023 041 103 serv_stats htmi Or ps ECHNOLOGY me Ethernet Traps Sent P eK Est0a Traps Pending 0 Traps Discarded 0 Devices Update Rackview Reset Counters Configure Stots Logout Evert Log Statistics PP General Purpose vO Administron SAWE Configuration Server Update Con
55. ls can be adjusted in amplitude via the push buttons on the front panel to optimize the SBS and SPM self phase modulation performance The coupling of light from the laser diode into the modulator is performed by using a polarization maintaining optical fiber The optical modulator provides two optical outputs The signal of one of these outputs is tapped to an InGaAs photodiode The electrical signal of this photodiode is evaluated for two reasons 1 To supervise a proper working of the CW laser diode In case of optical output power drop of 2dB of nominal power a B grade alarm warning alarm is generated in case of optical output power 0dBm an A grade alarm urgent alarm is generated 2 A detector circuit measures CSO and CTB distortions to optimise the bias point of the electro optical modulator For a proper operation of the detection circuit at least two TV carriers with a frequency spacing of 24MHz have to be pre sent Using this standard software setting of the detection scheme all known European and Chinese frequency plans OTOT EMS55X XL Optical Transmitter Rev x1 www olsontech com 8 are supported CENELEC frequency plan all regular 8MHz spacing frequency plans as well as the German 7 8MHz frequency plan Additionally it is possible to change the standard software setting to work with regular 6MHz fre quency plans NTSC or pure 7MHz frequency plans via push buttons on the front panel or via the NMS interface The OTOT EM55
56. lsontech com 25 Push button LCD interface Security Items When changing a parameter using the LCD interface in unlocked state you have to enter a four digit numeric keycode to login The LCD login times out after 5 minutes with no key pressed The factory default keycode is 1111 This key code can be changed within the NMS server LCD menu or within the server administration web page NOTE Changing the keycode to 0000 disables the code and the parameters can be changed without entering a code Keys Default Usage ESC key The ESC key is used mainly to cancel operations or to switch back a menu level ENTER key The ENTER key is used mainly to execute operations or to enter into a new menu level The Y A Cursor keys are used to select a menu entry or to toggle between possible parameters The lt P Cursor keys are used to select the letter to be changed in a number or a string or to scroll in text screens Menu Structure Press ENTER at the Root Screen to get a menu that contains the NMS Server menu entry first followed by a list of aliasnames of all detected RS485 bus devices Please note that if the NMS Server does not run stand alone but em bedded in a device then this device is treated like one of many RS485 bus devices Root Screen NMS Server OTOT EM55XXLa only This menu contains all NMS Server specifics Device No 1 Device s aliasname is shown This menu contains all items that are specific to the device with the shown
57. maintain the requested optical modulation index The modulation index determines the amount of bit errors which come up due to overmodulation clipping of the transmitter The subsequent diagram shows the relationship between OMT otrms and the bit error rate BER measured for QAM64 transmission Obviously OMI otrms Should be below about 20 in order to obtain BERs better than 10 The BER also depends on the mix of AM FM and QAM channels If the QAM load is very small compared to the AM and FM load the OMIotrms might be chosen about 1 dB higher while still obtaining the BER as given in the diagram below 1 00E 00 1 00E 02 1 00E 04 1 00E 06 1 00E 08 1 00E 10 15 0 LES 20 0 225 25 0 OMbiotrms in direct modulated externally modulated Figure 19 BER of Signals The OTOT EM55X is typically factory adjusted to achieve a BER of 10 with most frequency plans using the built in AGC function Experienced users are free to change the factory preadjusted OMIiot ms by up to 3 3dB in steps of 0 2dB and or to use the OTOT EM55X in non AGC mode This gives the flexibility to optimize the total system CNR or CSO CTB performance OTOT EMS55X XL Optical Transmitter Rev x1 www olsontech com 23 Mode AGC on modulated carriers user adjustable There is an alternative AGC mode available for measurement purposes only AGC on for modulated carriers This mode is only required when measuring CXMA cross modulation distortions in H
58. ment systems Network server and transmitter firmware updates are available for downloading via the Internet future proofing the unit Both transmitters offer two different standard frequency plans Specifications for other frequency plans are available on request The optical transmitter comes in a 6ne unit high 19 housing Figure 1 shows the view of an OTOT EM55X with RF in socket RF monitor socket and optical connectors on the front panel Optionally these connectors can be located on the rear panel Figure 1 Model OTOT EM55X Front View A Liquid Crystal Display LCD provides information about actual settings and properties Six push buttons are used to enter data locally The background light of the LCD switches on automatically when a push button is pressed OTOT EMS55X XL Optical Transmitter Rev x1 www olsontech com 6 The OTOT EM55X provides plug in power supply modules The minimum configuration is one power supply with fan module together with a redundant fan only module Optionally two power supply with fan modules can be used for improved reliability The power supply modules can be ordered for 100 240 Vac and 36 60 Vpc The OTOT EM55X accommodates one power supply and Model OTOT EM55XL accommodates two power supplies which can be specified with mixed AC and DC power supplies Optical connectors are SC APC standard with FC APC optional For an EMS element management system or a NMS
59. mitter Rev x1 www olsontech com 1 Figure 17 Fan Only Module Drawing 0 cc cessecsscsseccnecseseeeecsecsesesaesessesaesceseassceseeaeeecnecneceeeseeseeeeeeeseesateaeeeeneea 21 Operating the OTOTAEMS SX cer dbdes E ties atest chndecuatekacaanash dcadgereostiheshagsndadd ove daddies ee EER AES aat 21 Power Up Sequences 2 46 sie A A wat aban teasers 21 Setting appropriate operating conditions for the OTOT EM55XL XL Applying an Appropriate RF Input Signal Figure 18 Total RMS Input Power for N Unmodulated Channels with 80dBuV Figure 19 BER OL Signals vis cionninsiiii sida ni e Edda dado baila cada cane 23 ITU frequency adjustments in DWDM applications OTOT EMSSXL only oocoocccoccccononananononnnnnononconcononccncononnnnnnncnncncnnnono 24 Optical Power A RRA 24 SBS suppression setting OTOT EMSSXXL only cescecseesscesseesseeesesseeccneesceceeeceececeeesaeseesesaesecneeaeeecaeesessesseeaeeeeaeeaeeeente 24 LED Display A chou eddie bave ctu ea Sea dnoe aM cued teat EE E E S EI E Module Status INPUT Status OUTPUT Hall trio o AA A AR EA enna AS AAA 25 Push button LODO A 26 AN SN ASS 26 Keys Default Usage ida aaa Aaa a E SR ounaligh ii Ia 26 MENO ieai i EE ia e iia Root Screen NMS Server menu s OTOT EM55XL only Optical Transmitter Device Menu s seccscssesesecessseseceecsessesecsessessescsesaescesceaescesceaceaeaecatcaesecasececeseeesecesseceesaeeeseesseeaeeataes 27 Controlling the OTOT EMS5X XL v
60. ml Microsoft Internet Explorer Datei Bearbeiten Ansicht Favoriten Extras 2 Q zur ck Q x a CA JO suchen she Favoriten 2 amp w Ly a 3 Adresse http 172 023 041 103 U5 00C029EE4E18 setmark html v E wechseln zu Links Selected device s module LED should blink green for 10 seconds now Back E Fertig MD Internet Figure 21 Log in to the NEC Server In order to change values within the equipment recognized by the NEC it is necessary to login to the NEC Server Otherwise it will only be possible to view all the values however not to change them OTOT EM55X XL Optical Transmitter Rev x1 www olsontech com 29 2 Devices Overview Microsoft Internet Explorer a Qaa x A GH Pscten frrr O S A a Adresse 8 http 172 023 041 103 v E wechseln zu ir s Or Devices Overview ECHNOLOGY me Status Model Name Sertalnumber Sit SwRel Hw Rel Devices P Normal B ESIOA BRESIOA 16000502 so 25 23 PP BK ES104 a Logn Event Log Stabstes PP General Purpose vO Verbindung zu 172 023 0 2 X lhep 172 023 041 103 egn html z internet Figure 22 Display of Login Menu If login is selected it is required to enter the user name and the appropriate password Note The buttons occur in different languages depending on the actual Windows language setting After login two additional menu buttons appear in the menu Devices Devices update and Configure Slots
61. nd percent characters in pathnames II SNMP Configuration Server Update Contig Save Upload Config File Config Restore dl Fertg internet Figure 35 Config Restore Menu In the column Restore from the available configurations can be selected by model name alias name serial number and slot number The Restore button starts the restoration In the last column it can be selected if the equipment should also take over the aliasname and slotnumber In this way the device can be completely recovered in its settings In this manner it is easy to configure a replacement unit or re store the configuration of an entire group of devices e g after a system crash OTOT EM55X XL Optical Transmitter Rev x1 www olsontech com 46 2 Configuration Restore Microsoft Internet Explorer Datei pearbeiten Ansicht Eaworiten Extras 2 Qara 011 Aann frr O Dm JO DB Adresse El http 172 023 041 103 pae m_restore html E ESTA Devices Update Rackwiew Configure Slots Logos Evert Log Statistics P General Purpose VO Admerastration SNMP Configuration Server Update Configuration Contig Save Contig Restore 2 Fervg Configuration Restore MEA est Altasname Soriaiminber Slot Restore trom TE000582 49 NO RESTORE BK ESIOA BK ESIOA TE000582 S0 NO RESTORE BK ES10A TE000582 Siot 50 172 23 41 103 03 Jul 05 09 41 Select a configuration binary fle c
62. network management system an Ethernet 10 100 Mbps inter face is available at the rear side of the OTOT EMS55XL This Ethernet interface supports SNMP and HTTP protocols The IP address for the Webserver interface can be set using the push buttons at the front panel or the RS232 local set up port at the rear side An additional RS485 master interface has been implemented at the OTOT EMS5XL to poll other equipment like EDFA s or optical switches which are connected to the local RS485 management bus The units may be ordered with one general purpose I O port and four input only ports for additional alarm or remote func tions These 1 O ports are accessible via the Webserver interface The OTOT EM55XL offers two RS485 slave interfaces for EMS or NMS An external level converter from RS485 to RS232 can be offered on request to connect the OTOT EM55X XL to standard PC COM1 or COM2 interfaces Furthermore there is one alarm output which can be used for simple alarm messaging functions Principle of Operation The transmitter is based on five functional blocks RF path CW DFB laser diode integrated optical modulator con trol electronics and power supply The functional diagram is given in Figure 2 RS 232 Tn wv P Interface lt gt _ Dy Ethernet interface 4 Pm Mero j Power on mE el
63. nfiguration Server Update Contig Save Contig Restore Figure 33 Server Update Menu A Server software update might be required if new equipment has to be supervised by the NEC connected to the RS485 master interface or if the changes to the WebBrowser or SNMP Ethernet interfaces have to be imple mented Note The buttons occur in different languages depending on the actual Windows language setting OTOT EM55X XL Optical Transmitter Rev x1 www olsontech com 44 Config Save From NEC appl SW release 1 11 x a configuration menu is optionally available The menu allows the user to save and or to restore the configuration settings of the equipment controlled by the NEC Pushing the Config Save button the following picture appears 3 Configuration Save Microsoft Internet Explorer Datei Bearbeiten Ansicht Eavoriten Extras 2 a Quo d 2 G Oan feron O Z A a dEl htp 172 023 041 103 parm_save htm v Ed wechseln zu L Gr Configuration Save ECHNOLOGY me Model Aliasnanve Sertalnumbor slot Save mal Tao E P okesioa BRESIOA BK ESIOA 16000582 so a Devices Update ET Description Configure Siots 172 23 41 103 03 Jul 05 0941 Generate Config File Logout Event Log Statistics P General Purpose VO Admerestr ation SNMP Configuration Server Update Contig Save Contig Restore Figure 34 Config Save Menu A table of the controlled devices with model name alias name serial number and slo
64. nononono nana nnnen on one rn en nn non ona nn anar an non oa narran nen en ana nn aran ancnninns 41 OTOT EMS5X XL Optical Transmitter Rev x1 www olsontech com 2 AN AO 41 Special SEMIN SS cristaleria needed as tubos A N N d tonstaesnes UPN DO anta E S 42 Trap VTA A AAA AAA AA AAA AAA AAA 42 Server Un dd 44 Figure 33 Server Update Meni incre tio nada da leia iii 44 COMPS aaa 45 Figure 34 Config Save Menth cccicccssscearecncassevssnsuocnseescdececedetueguawcesy n sav earduducos a a a 45 Contig REStorel vis ie ei Seat rosa 46 Elgure 35 Contig Restore Menu ics css a A A A rules a E E 46 Figure 36 Contig Restore Menus 3 30 dsdsiacsndncsbesson chen sede hsebsedabueneded cossntoasdades debes lado 47 Status Meneziad Dio 48 Figure 37 Status Menu of OTOT EM55X oriin i o AEE GIESE NAE TOTAA 48 Parameters Meni it a iii datada G 49 Figure 38 Parameters Menu of OTOT EM55X eesssseseressesesesseseresrsserirerrirtssestnisturestsetessittssesesteessesessesistedsisssesese 49 Internal VOS A A AA dt OERI 50 Figure 39 Internal Voltages Menu of OTOT EM55X coccccconcononononononnnnnnnononononnnnnnnonono nn nn onnnnon ona nn oran nen on ona nn aran can caninos 50 Settings ON NN 51 Figure 40 Settings Menu of OTOT EMSSX dococicnonococononnonnnncnnnnononononorncnnonon ono ro nana naar one nn anne nn nono ne anna aan an ana a anar nn nana 51 Changing the SBS Threshold cit tr its A e cis 52 Figure 41 Changing the SBS Thres
65. nzu Lis GE Server Properties ECHNOLOGY me Server Model NECE E embedded in BK ES 104 E Hoare Release 3 0 Percesion Seriainumber TE000582 Devices Update Processor ReviD 1 Rackview SNMP MIB Type BKTEL HFC862 MIB Configure Stots Sofware Release Applicaton 4 12 2 Bootoader 14 uos 22 Apr 05 13 May 04 Event Log sa Date Time 3 Vis 2005 9 Sos F General Purpose VO Adtrerestration NTP Server 0000 Timezone GMT 1 v SNMP Contigurabon Server Update Change ae Config Save Contig Restore El Fertig MD Internet Figure 25 Server Properties OTOT EMS55X XL Optical Transmitter Rev x1 www olsontech com 33 Event Log After login the Event Log of the Server NEC can be displayed Depending on the operating conditions the event log looks similar to what is shown in the picture below 2 Event Log Microsoft Internet Explorer fax a Datei Beabeiten Anscht Eavorten Extras 2 y aj Qars d A sem feron O B S JOA El http 172 023 041 103 eventiog htm v E wecsenay Le Gr Event Log ECHNOLOGY me Date Time Model Name Sertalmanber Event Description devices os 09 41 33 BK ESIOA TE000582 Feet eee tee PeKeston P muo 0841 05 BK ESIOA 1000582 Carer FE ur reo cm Devices Update P muo 09 40 56 BK ESIOA TE000582 rm AI 034405 09 40 56 BK ESIOA TEDOOS82 RF anal low aterm Configure Sins P muo 09 4052 BK ESIOA 16000582 eye ee em server 034405 nn BK ESIOA Te000582 Omi or RF gain high
66. o redun will go back into normal operation which will set the dant slave mode connected redundant slave mode into stand by opera tion Redundant slave In case that the input port is low the transmitter will go Input active high into stand by operation This port should be connected to the cor In case that the I O port No 0 input will become high responding I O No 0 port of the redun the transmitter will go into normal nominal mode dant transmitter which is set into redun dant master mode Notes The alarm I O port alarm mask determines whether e only alarms but no warnings default factory setting or e alarms and warnings trigger the I O port No 0 in output mode Application Automatic redundancy switching of 2 OTOT EM55X located side by side e Connect a cable between the master and the slave OTOT EM55X connecting both I O No 0 ports and GND e Use a pull up of 10kOhms between the I O port No 0 and 5Vpc of the slave device This is only necessary in hardware rel 2 0 in order to make sure that the slave OTOT EM55X will start working if the both supply voltage s of the master OTOT EM55X fail In hardware release 2 1 and later this pull up will not be necessary any more e Set the master OTOT EM55X in one of the two Redundant master modes e Set the master OTOT EM55X I O port mask to the desired mode Set the slave OTOT EM55X into the Redun dant Slave mode Observance e As long as the master OTOT E
67. off However the laser temperature is still kept at the operating temperature by driving the Peltier cooler enabling a fast switching on time Additionally the RF input monitor is operating Note In future software releases it is in tended not to completely switch off the optical power but to decrease the optical power below a certain thresh old e g 3dBm in order to enable the supervision of the laser in standby mode and in order to enable the su pervision of the fiber link between the OTOT EM55X and the subsequent EDFA or RX e ON The transmitter output power is always on default factory setting e ON Standby on alarm The transmitter output power is on as long as there is no internal alarm In case that an alarm condition occurs the output power is switched into standby mode This operating mode has been designed especially for redundant transmitter operation If e g an RF input alarm occurs the optical output power is switched to standby mode This consequently should also disable the subsequent EDFA If a pair of two OTOT EM55X with subsequent EDFA are intended to be used for redundant operation master slave mode this feature will automatically switch from the master TX EDFA to the slave TX EDFA In this case the I O No 0 ports of both OTOT EM55X have to be connected and the master slave settings have to be chosen Note The requirements for an alarm condition can be set by adjusting the alarms thresholds This feature request
68. ohol Reinstall the connector into the bulkhead ensuring that the cables fibers are not stressed Caution Do not extend the connector by more than 1 cm from the body of the OTOT EM55X Troubleshooting To avoid problems with the OTOT EM55X and 1550nm transmission follow these general rules Use only carefully cleaned angled connectors like SC APC FC APC E2000 and similar ones for the whole transmission system between optical transmitter and receiver A mix of angled and non angled connectors will result in high insertion loss and a degradation of the CSO and CNR performance Avoid bending losses of fibre optic cables Since optical transmission on 1550 nm significantly more sensitive to bending losses it is very important to avoid narrow curvatures Use a proper levelled flat RF input signal The flatness of the input signal e g 1 dB will directly result in the same variation of CNR CSO and CTB in this example 1 dB Be careful to understand all nonlinearities in optical fibres with 1550 nm transmission long distances and high optical powers CNR and CSO can easily degraded due to self phase modulation and Brillouin scattering In doubts check the performance of the link by using an optical attenuator instead of using optical fibre to see whether the performance is limited due to impacts from the fibre In case of technical questions please ask our sales representative Note Since the transmitter is working internally with very h
69. olsontech com 65 3 Limits 2 Microsoft Internet Explorer Qatei Bearbeiten Ansicht Eavoriten Extras 2 Gans OX A G Pace rrom O Dry a WBS Adresse E http 172 023 041 103 US 00C029 E4 18 fimits2 html Contig Save Contig Restore E Fervg Note All settings of the limits 2 menu are factory settings only OTOT EMS55X XL Optical Transmitter Rev x1 Warming Hysteresis Warning Hysteresis Hysteresis Warning Hysteresis Warning Hysteresis Warning Hysteresis Figure 53 Limits 2 Menu of OTOT EM55X www olsontech com Properties Menu The properties menu of the OTOT EM55X provides on overview of the appearance of the transmitter such as hard ware model hardware release serial number and the software releases Optionally an aliasname and some user data may be edited The aliasname occurs in the Devices tree of all Webbrowser displays as well as in the LCD 2 Properties Microsoft Internet Explorer x Qatei Bearbeiten Ansicht Eavoriten Extras 2 br Gans d A G ot ferron O Z a WBS El hp 172 023 041 103 05 0CO29EE4E18 properties htm E wectsen zu Or ECHNOLOGY nc Properties Devices Hardware Mode BK ES10A Poesia Hardware Release 23 devices Update oren Seriainumber TE000582 Configure Sicts Allasname ECC Customercode BKT Logout ali Software Release Application 25 Bootloader 13 e 30 Sep 04 19 Nov03 General Purpose YO a Userdata
70. orts 1 5 Somebody entered the headend available on ports 1 5 Input is warning Input signal creates a warning flag in status display message orange Temperature in room is too high available on ports 1 5 Input is alarm Input signal creates an alarm flag in status display message red Headend failure available on ports 1 5 Output on any alarm Output will become active with any alarm Alarm limits for the OTOT EM55XL can be set in limit menus of OTOT EM55XL available for port 1 Output on any warning Output will become active with any warning Warning limits can be set in limit menus of OTOT EM55XL available for port 1 All ports can be set to be either active low or active high A description of the I O port function can be added to each port optionally Examples of I O port status information An OTOT EMS55XL polls also an EDFA via the RS 485 interface Please note that the I O port 0 is directly related to the transmitter unit whereas all other I O ports 1 5 are related to the NEC OTOT EMS55X XL Optical Transmitter Rev x1 www olsontech com 38 e Let s guess that I O 0 is set to output on any warning and alarm e Let s guess that I O 1 is set to output on any alarm no warnings Now let s assume some alarm situations 1 RF input of OTOT EM55X is low warning Optical Amplifier has no warnings or alarms The I Os will be Output 0
71. os Svea EEEE EE EE TAG 58 Figure 47 Setting the I O Port Mode of the OTOT EMS5X woo c scenes eeceecseseeeessessnsenesesaesssaesesenesaaaeeseseee 58 Setting an Alarm Warning Mask for I O Port 0 ooo cseecseeecseeseecseeecaesesseececseaesssesessecseasssesseseeansesesesseseeanassesesaesanana 59 Figure 48 Setting the Alarm Warning Mask of the OTOTEMSS XX coociccocicononncncononononoronnnonononono nn nono nonononarnon nro canino 60 Setting the Channel Spacing of the Transmitted CATV Signal oconicicnonocicocononnncnononononanncononononona nono nro cnnanan oran can cn naar anar racininos 61 Figure 49 Setting the Channel Spacing of the OTOT EM55X coocciccononononnnnnnonncncncononononnoncnnononono nana nn nn ona narran nan cnc 61 Setting an Event Mask for the Webserver and SNMP Interface ooooooconionocononononncnnoncnnnnnannnn non onnnnon nooo nro cana anar an canon nan anar rncininos 62 Figure 50 Setting the Event Mask for the Webserver and SNMP Interface of OTOT EM55X uo eee 62 Figure 51 Setting the Event Mask for the Webserver and SNMP Interface of OTOT EM55X oococcccocononnononnnoncnnos 63 Alarma A o AE as 63 Warnes Elo dd dede dd o dead OO Da e to dd a asa das do DA A a sak AO 64 Fimis MENUS rr A A A A AS 65 Figure 52 Limits Men of OTOT EMSS X ascitis ia AR az 65 Figure 53 Limits 2 Menu of OTOT EMSSX oononcnccaconononunnonenannonarannonoranonanannonerncnonannononennonanannononernananannonenassonorconanona 66 Properties ME A
72. ptical Output Power Statistics VO Port Mode Video AGC on modulated camiers modulated camers F General Purpose VO Output Port Mask All alarms no warnings Administration SNMP Configuration Server Update enanos Contig Save Contig Restore 2 0 Internet Figure 45 Selecting the AGC Mode of the OTOT EM55X OTOT EMS55X XL Optical Transmitter Rev x1 www olsontech com 56 Changing the Optical Output Power Mode There are three different output power modes available for the OTOT EM55X as shown in the picture below 2 Settings 1 Microsoft Internet Explorer O x Qatei Bearbeiten Ansicht Favoriten Extras 2 gt Qara d DOH Pacer frrr E 2 3 am JA http 172 023 041 103 U5 00C029EE4E 18 settings 1 htm EJ wechseln zu j LSON Status ve 3 3 Lints 2 Evert Mask Properties E Settings x Q_PEr PP Bresta SBS Suppression 165 dBm Channel Distance 7 MHz Devices Update OMi 1870 RF Gain 0 0 ga A OM nominal 197 w Contigure Slots Laser Frequency 192800 GHz AGC Mode Manual AGC off y Le pa Optical Output Power ON Y aretes VO Port Mode F General Purpose 1 Output Port Mask ON Standby on error Achraresty bon SNMP Configuration Server Update Change Contig Save Contig Restore Fetg internet Figure 46 Changing the Optical Output Power Mode of the OTOT EM55X e OFF Standby By selecting this mode the OTOT EM55X will operate with optical output power switched
73. ptocouplers or relays external sensors etc the current sinked from this port should not exceed 80mA 1 O 0 is directly related to the transmitter If the port is used as an output alarms related to the transmitter can be accessed on this output If the port is used as an input it enables easy redundancy switching between two re dundant OTOT EM55XL T O 1 to 5 are directly related to the NEC The output port I O No 1 can therefore be used to display a warning or an alarm if 1 one of the up to 50 RS485 polled devices or 2 the OTOT EM55X or 3 at least one of the input ports I O 2 5 which has been set to indicate a warning or an alarm exhibits a warning or an alarm All I O ports can be addressed and configured via the Ethernet Webserver HTML interface or via SNMP In order to not degrade the EMI performance of the OTOT EM55XL a shielded cable with the shield connected to pin 2 GND of the mini DIN connector has to be used OTOT EMS55X XL Optical Transmitter Rev x1 www olsontech com 16 1 O port of OTOT EM55X The OTOT EM55X from hardware release 2 0 is equipped with one I O port The figure below shows the schematic of this port T6 gt 2N7002 GND GPU TY gt CPU_OUT lt 2N7002 GND Figure 10 Notes e The maximum voltage applied to this port should be not below GND level and should not exceed 5Vpc e The input level for input high should be gt 3V the input level for in
74. put low has to be lt 1V for NEC hardware re lease 2 0 e The input level for input high should be gt 1 6V the input level for input low has to be lt 0 8V for NEC hardware release 2 1 e The input only port and the open drain output port have a pull up resistor of about 100kOhms towards 3 3V e The active low output resistance to GND of the output port is lt 210Ohms The OTOT EM55X uses an 8 pin Mini DIN connector for external Input Output handling The connector is located on the backside of the device near to the NMS RS485 Master connector E a e O O O O o ol O 7 O Es O O UU o j EN NG X UY Output RS485 Slave RS232 RS485 Slave Figure 11 Model OTOT EM55X Rear Panel Connectors OTOT EMS55X XL Optical Transmitter Rev x1 www olsontech com 17 Figure 12 shows the view on the 8 port mini DIN connector Figure 12 8 Port Mini DIN Connector The mini DIN connector pins are used as described in the following table Pin Number Function in OTOT EM55X of mini DIN Comments connector GND 2 Ground 5 1V pe 45 Max 80mA protected by a serial a 1 PTC lt 50Ohms in NEC hardware release 2 1 voltage under no load condition Fuse lt 6Ohms from NEC hardware release 2 2 Input Output No 0 A SUPUT ANG Used for redundancy switching feature input port or as alarm out from hardware release 2 0 and software 5 put port release 2 0 or later Input Output No
75. r o Warning enabled w Laser temperature high warning Waming enabled Laser temper ature tow warning Warning enabled Optical power is off Notify enabled The device is starting up Notityenabled Redundant device has been activated Notify enabled w AGC is off Notify enabled w see Note Y SBS is off Notify enabled see Note Event mask set for this device Notify enabled w see Note 92 Y fl Ferto Internet Figure 50 Setting the Event Mask for the Webserver and SNMP Interface of OTOT EM55X OTOT EM55X XL Optical Transmitter Rev x1 www olsontech com 62 Datei Bearbeiten Ansicht Favoriten Extras 2 2 Mask Microsoft Internet Explorer EX K ay gt 72 Q Zur ck 7 x EJ Y p gt Suchen A Favoriten 4 ra Hr la rel 3 Adresse ES http 172 023 041 103 U5 00C029EE4E18 masks htrnl v Wechseln zu Links A Configure Slots Omi RFgain enabled vw enabled vw enabled vw enabled vw r server Output Power enabled vw enabled w enabled v enabled vw Logout TEC Current enabled v enabled Event Log Laser Current enabled vw Statistics j 1 Module Temperature enabled v enabled vw enabled vw enabled w General Purpose 1 0 Adrinistralion 3 3V enabled enabled v SNMP Configuration 5V enabled v enabled v Server Updete 5V enabled enabled v sev enabled 4 enabled v Contig Save r 12V enabled w enabled vw Config Restore a 24V enabled enabled v Discrete Alarms Warnings
76. re of the trans mitter is too high Improve thermal heat flow in order to decrease the operating temperature e Laser bias current gt 130 The laser has degraded In case of a fan or power supply failure the power supply fan unit has to be replaced by the customer Olson Technology offers fans as regular spare parts Urgent alarms MODUL LED red e Laser cooler current 100 In this case the temperature of the trans mitter is too high Improve thermal heat flow in order to decrease the operating temperature In case of an urgent alarm the transmitter is switched off internally and can only be re started with a power on reset by disconnecting the power supply or via the NMS system INPUT Status Normal operation INPUT LED green Non urgent alarm INPUT LED yellow e RF input low or high e In AGC mode AGC is out of range e In Manual mode OMI total RMS is out of range e Laser bias current gt 130 The laser has degraded Urgent alarm INPUT LED red e RF input is missing OUTPUT Status Normal operation OUTPUT LED green Non urgent alarm OUTPUT LED yellow e The output power drops below 5dBm The transmitter is still working but with reduced performance It must be sent to Olson Technology for maintenance Urgent alarm OUTPUT LED red e The output power drops below 4dBm The transmitter is not working Send the unit to Olson Technology for maintenance OTOT EMS55X XL Optical Transmitter Rev x1 www o
77. rectly located in the rear of the device and have to be easily accessible 100 240V ac module Figure 15 provides a view on the 100 240V c power supply and fan module The module includes an AC main input One LED indicates the status of the power supply module The power unit O K LED lights green when the power supply module is working properly The power supply and fan modules can be exchanged during operation hot plug in technology without harming the equipment or having any impact on the operation of the transmitter in case of a properly working backup power supply Figure 15 100 240 Volts AC Power Supply Drawing 48 Voc module Figure 16 shows the 48Vpc power supply and fan module The module includes a 48Vpc cable terminal in order to connect the supply voltage It is important to take care of the right polarity of the DC supply voltage either 0 or 48Vpc connected to the and terminals respectively or O and 48Vpc connected to the and terminals respec tively A fuse and a spare fuse are implemented inside the power supply and fan module and can be replaced if required One LED gives the status of the power supply module The power unit O K LED lights green indicating that the power supply module is working properly The power supply and fan modules can be exchanged during operation hot plug in technology without harming the equipment or having any impact on the operation of the transmitter in case of
78. s 1 Microsoft Internet Explorer Datel Bearbeiten Ansicht Eavoriten Extras 2 i Gans O d AG Aar fern O Dry A a yese 48 htip 172 023 041 103 45 DOCO29EE4E 18 settings1 html Ejwetsenzu Lr 1SON Status Parameter Voteges Setlings Umt Limts 2 Evert Mask Properties ECHNOLOGY me Settings P aresta SBS Suppression 16 5 dBm Channel Distance 7 MHz Devices Update OMI RF Gain 00 gB rc cm nominal Configure Sicts Laser Frequency Y GH AGC Mode on unmodulated camers Y Logout cal Pi v Sitios Optical Output Power Statistics VO Port Mode ph output v P Genera Purpose LO Output Port Mask fs no warnings v Administration SNMP Configuration Serve sane Config Save Contig Restore 2 internet Figure 41 Changing the SBS Threshold of the OTOT EM55XL OTOT EM55X XL Optical Transmitter Rev x1 www olsontech com 52 Changing the OMltotrms AGC on modes only The picture below shows how to adjust the OMI total RMS in order to optimize the transmission performance in terms of CNR CSO CTB and BER 2 Settings 1 Microsoft Internet Explorer E fay x Ar Datei Pearbelten Ansicht Eavoriten Extras 2 Gans Ma Aann frn O 3 2 m WB 3 tesse 8 htp 172 023 041 109 U5 DOCO29 E4E 18 settings 1 htm Gr Stetus Parameter Voteges Setings Limits Limts2 Ever Mask Properties ECHNOLOGY me Settings El wecwenzu Ln Devers P Bresta SBS Suppression 165 dBm Channel Distance 7 MHz Devices Update OMI 18
79. s the accumulated traps are in any case released for sending e The internal trap memory is 3 4 filled e The SNMP agent of the NEC E is polled by any kind of manager e Test trap verify receiver response This function is very useful to set up and test the communication in modem links By clicking this link it can be tested whether the Trap Verify Receiver is answering correctly on the SNMP Get Request Timeout after 30 seconds This link is only visible when Verify before Trap is enabled OTOT EMS5X XL Optical Transmitter Rev x1 www olsontech com 43 Server Update It is possible to update the Server NEC firmware by uploading it to the optical transmitter using the Webserver software upload menu as shown below 2 Webserver Update Microsoft Internet Explorer E D x Qatei gesbeiten Ansicht Eavoriten Extras 2 a Ora aAA Dann frrr E 3 am JO Adresse E http 172 023 041 103 upd_webs html v EJwehenz irks Gr Webserver Software Update ECHNOLOGY me Select the webserver s binary image file called image dal and upload itto the device After a succesfull upload ine webserver gets automatically updated with the new binary image P ekesioa The webserver restants executing a reset after the update is finished Devices Update The webservers actual Sofware Release is 1 12 2 from 22 Apr 05 Configure Sicts Server Logos Ubica selectos ne Evert Log Statistics F General Purpose vO Administradon SNMP Co
80. shown using a mark and a description There are several marks filled or unfilled used to show all events e A green flag indicates that the transmitter is working properly e An orange flag shows a warning A certain parameter is out of the nominal range The reason for that should be checked and solved as soon as possible e A red flags show an urgent alarms An immediate action is required to fix the failure e Anexclamation mark provides a message about a certain mode of operation or change OTOT EM55X XL Optical Transmitter Rev x1 www olsontech com 48 Parameters Menu The parameters menu displays the most important values of the transmitter for operation 2 Parameters 1 Microsoft Internet Explorer Datei Bearbelten Ansicht Eavoriten Extas 2 4 Gant x AG Pon fermon O S d m A SB regse 48 ntp 172 023 041 103 U5 00C029EE4E 18 parameters 1 htmi 150N Status Parameter Voteges Settings Lts Lists 2 Evert Mask Properties ECHNOLOGY me Parameter i aj alka v E wectson au tris Devices ekesta RF Input Qotal rms 179 dBm RF gain 14 48 Devices Update Rackview Output Power 9 7 dam Module Temperature 43 0 c Contigure Sots Laser Current 100 0 TEC Current 10 0 Logout ea Evert Log Statistics F Genera Purpose vO Adrerestraton El Fertg Figure 38 Parameters Menu of OTOT EM55X For proper operation the black vertical bars should meet the green fields Note The scaling of the
81. software release 2 0 or later OTOT EM55X XL Optical Transmitter Rev x1 www olsontech com 57 Changing the I O Port Mode J Settings 1 Microsoft Internet Explorer Datei Bearbelten Ansicht Favoriten Extras 2 LJ Qars Y ia A O son frr O Dm JHB El htip 172 023 041 103 45 DOCO29EE4E 18 settings1 html 1SON us Voltages s s2 Evert Mack Properties co Settings Devices P okesma Devices Update OMI 1870 E wechseln zu SBS Suppression 165 dBm Channel Distance 7 MHz RFGain 00 da OMI nominal 187 i Configure Sits Laser Frequency 192800 GHz a AGC Mode Manual AGC off y Logout Optical Output Power ON v Evert Log VO Pon Mode x Output Port Mask Statistics F General Purpose w All alarms no warnings v Adiresi abon SNMP Contigua sbon Serves Update Change Contig Restore internet Figure 47 Setting the I O Port Mode of the OTOT EM55X This feature is only available from hardware release 2 0 and OTOT EMS55X application software release 2 0 The I O port No 0 can be set either to be an output port where 4 modes of operation are available e active low e active high default factory setting e redundant master irreversible or e redundant master fallback or being an input port which implies the redundant slave mode The table below shows the mode of operation and the impact on I O port No 0 Mode of operation Description 1 O port No 0 A
82. t number is displayed Devices can be marked for configuration saving using last column of the table Pressing the Generate Config file button a file with the settings of the selected devices is generated and stored in the flash memory of the NEC To save the file lo cally the button Save generated Config file can be used The default file name is displayed below the button Also this link can be used to initiate the file storage OTOT EM55X XL Optical Transmitter Rev x1 www olsontech com 45 Config Restore Pushing the Config Restore button the file saved in the NEC memory is available for restoring as shown in the pic ture below 2 Configuration Restore Microsoft Internet Explorer IX Qatei Bearbelten Ansicht Eavorfen Extras 2 r X gt e 4 4 Gam 120 Pst dream O DJ fesse 8 htp 172 023 041 103 paem_restore html E wedsenzy ir s GE Configuration Restore ECHNOLOGY ne Devices Model Aliasname Sertalmenber Slot Restore from P akesioa NECEE NECE E 1E000582 49 NO RESTORE X o Devices Update BK ESIOA EMESIDA TEOOOS82 SO NORESTORE o Rackview Restore IP parameters NEC only position and aliasname too Configure Slots cn 172 23 41 103 03 Jul 05 09 41 Logout Restore Evert Log Statistics P General Purpose vO Select a configuration binary file cbf and upload it After a succesfull upload the restorable devices are shown above Administ don IMPORTANT NOTE Dont use comma a
83. the RS485 interface bus There are some limitations to be considered for a proper functioning of the EMS server Physical limitations For the RJ 45 cable a CAT6 or better data cable is recommended The length of the cable should be chosen as short as possible A distance of 10 m should not be exceeded anyway General limitations A maximum of 48 devices can be managed by one NEC In order to get a correct display of the rackview function of the NEC there are two more limitations required All devices to be managed by one NEC have to be positioned in one rack and on one side of the rack if the rack is equipped with equipment from both sides A maximum of four subracks can be used The address of all subracks have to be set correctly by adjusting the decimal switches located on the interface panel of the subracks Address 1 has to be used for the upper sub rack the next following sub rack will obtain address 2 and so on After powering up the NEC will poll all equipment connected to the RS485 interface automatically It might take up to about 2 minutes until all equipment have been identified This is also true if equipment is removed or added during normal operation of the NEC Maintenance Clean connector ends with a lint free tissue and alcohol before every mating Loose screws fixing the optical connector plate Remove the connector from the connector bulkhead Clean the connector ends with a lint free tissue and alc
84. to download software for the NMS server firmware in case the NMS server crashes during software updates when reprogramming application flash software over Ethernet OTOT EMS55X XL Optical Transmitter Rev xl www olsontech com 18 Note The local setup process can only be executed when the device starts up After startup this interface has no func tion yet but in the future will be used for modem connections Device bus interface RS485 master XL The RS485 interface can be used to connect more devices to be managed by the Ethernet NMS server interface in stalled in the optical transmitter The OTOT EM55XL in this case works as a network element controller RS485 master which polls all equipment that is connected to the RS485 port Device bus interface RS485 slave X The RS485 slave interfaces can be used to manage the OTOT EM55X which reads data and changes the settings Ad ditionally on a SUB D9 male connector beside the RJ 45 a RS485 to RS232 level converter is included Using this port software on any WINDOWS based PC can communicate with the OTOT EM55X by using the COM1 or COM2 ports Front Panel Figure 13 shows an example of the front panel view of the OTOT EM55X The RF input and the optical connectors are optionally available on the rear panel The handles can be omitted on request Figure 13 Model OTOT EM55X Front Panel Drawing Item Function 1 RF input optionally availabl
85. transmitted via the SNMP interface The menu is shown in the two following figures 2 Mask Microsoft Internet Explorer Datei Bearbelten Ansicht Eavoriten Extras 2 Qu DOG Pte fermon O Dry JA Adregse dEl http 172 023 041 103 S 00C029EE4E 18 masks html x EJ wachsen zu irks ison Status Parameter Voltages Settings Lim s Limts2 Everit Mask Properties a E Alarm Warning Motity Mask E Analog Alarms Warnings P okesma Alarm high Warning high Warninglow Alarm tow Devices Update DAA PF input total rms enabled w enabled enabled w enabled Omi RF gain enabled v enabled v enabled enabled Configure Shots Output Power enabled v enabled w enabled enabled Logout TEC Current enabled v enabled v lt lt ox Event Log Laser Current enabled 1 o 0 Module Temperature enabled Y enabled v enabled enabled Administration aw enabled v enabled oor SNMP Contiguraten sv enabled v enabled Server Updete Sy e enabled wi enabled oo Configuration Aw enabled v enabled v oo Contig Save ae aw enabled vw enabled v aw enabled vw enabled Discrete Alarms Warnings Notifies Bootloader running no Appl firmware Alarm enabled w see Note 2 Connection lost no response from device Alarm enabled see Note D PF signal loss Alarm enabled Power supply left faire Waming enabled Power supply right falls e Warning enabled Fan betty faihu e Warning enabled w Fan right fai
86. tro optical modulator to establish a sufficient modulation depth of the optical output signal The central core of the transmitter is the electro optical modulator working as a Mach Zehnder interferometer The light from the laser diode is coupled into an optical strip waveguide An integrated optical splitter divides the light into two identical portions which are phase modulated by an RF signal applied to the electrodes of the modulator The concept of the electrodes results in a push pull phase modulation of both branches Following the modulating section the signals of both arms are combined and interfere The interference of the phase modulated signals results in an am plitude modulation of the output light signal which is available on both outputs of the combiner The necessary CW input light for the modulator is produced by a DFB laser diode working with a wavelength between 1550 and 1560nm There are two control loops for operating the laser diode at constant optical output power as well as at constant temperature by means of a thermoelectric cooler The OTOT EM55XL has been designed for DWDM ap plications and allows tuning the operation frequency wavelength by 100GHz in steps of 50GHz The laser diode operating current is monitored in order to detect an increase of the initial value due to ageing of the laser diode The increase should not exceed 30 The temperature of the laser diode is controlled by measuring the required drive cur
87. ts Limts2 Evert Mask Properties E Mb JP BK ES10A SBS Suppression 165 dam Channel Distance 7 vw MHz Devices Update OMI 1870 RF Gain 00 da CO OMi nominal 187 9 Configure Stats Laser Frequency 192800 GHz AGC Mode Manual AGC om y Logout een tag Optical Output Power ON w States VO Port Mode Active high output v P General Purpose vo Output Port Mask All alarms no warnings Acreract DON SNMP Contiguraton Server Update Change Contig Save Config Restore Fetg internet Figure 43 Setting the RF Gain on the OTOT EM55X OTOT EM55X application software release 2 0 and later supports this feature Notes e The RF gain setting is only relevant in AGC on mode e The setting range for RF gain might change slightly from device to device due to production tolerances e Changing the RF gain changes the input sensitivity of the OTOT EM55X in AGC off mode 0dB is the nominal RF gain Setting the RF gain to e g 2dB improves the input sensitivity of the OTOT EM55X from 80dBiV to 78dBuV OTOT EM55X XL Optical Transmitter Rev x1 www olsontech com 54 Changing the ITU frequency of the OTOT EM55XL The figure below shows how to change the ITU frequency optical wavelength of the transmitter in steps of 5 0GHz up to 100GHz not available for OTOT EM55X 2 Settings 1 Microsoft Internet Explorer x Datei Gearbeiten Ansicht Eavorten Extras 2 he Gans Oi AG Poem fren O DY mA Adresse http 172 023 041 103U5 DOCO29EE4E
88. ttings IPAddress 17223 41 103 Change Dees Netmask 255 255 2550 PP B Es104 bide tind Defauitrouter 0000 a Configure Slots Passwords technical o _Change unn O Logout sysadmin o Evert Log Statistics LCD Keycode O P Genera Purpose vO Aderat sbon Other Page Reftesh 30sec v Change SNMP Contigs ation Pani nl aliada Server Reset Configuration Contig Save Conny Restore Fet Internet Figure 32 SNMP Configuration Menu Traps The SNMP configuration menu allows entering the IP trap receiver addresses for up to 4 trap receivers and to change the trap community strings for trap receiver 1 and trap receivers 2 to 4 Additionally all traps can be dis abled enabled Furthermore the inventory traps might be disabled or enabled A further button allows selecting the SCTE HMS alarm generation e Disable all traps e Enable all traps Enable and resend all traps this function is helpful for testing SNMP communication with the trap receiver s Communities Separate strings can be allocated to the get community and the set get community OTOT EM55X XL Optical Transmitter Rev x1 www olsontech com 41 Special Settings CABLEwatch NMS Used Not Used SNMP Get Set Community Names cannot be modified Web SNMP Get Set Community Names can be modified Web and SNMP und SNMP Web Rackview and Rackview Configuration Pages Handling Web Rackview and Rackview Configuration Pages are inde are directly linked wit
89. uipment EDFA s optical switches receivers and power supplies that are con nected to the RS485 master interface and support the RS485 protocol are polled The received data is then translated into SNMP and HTTP and can be accessed via the Ethernet interface The NEC is able to poll up to 48 devices on the RS485 bus On the optional I O ports 1 through 5 warnings alarms collected from all polled devices can be accessed The application software of the NEC can be updated easily in order to support new devices Olson Technology offers the MIB files for easy implementation of the SNMP interface into element network management systems EMS NMS such as Cablewatch Olson Technology HP Open View or Rosa SA former Barco Networks The OTOT EM55X ref to Figure 3 right does not contain an embedded NEC The RS485 slave interface of the OTOT EM55X can be accessed directly An element management system which polls this RS485 interface using the OTOT EMS55X XL Optical Transmitter Rev x1 www olsontech com 9 protocol can collect data from the transmitter and adjust the transmitter settings Since the RS485 protocol is quite complex this option is only recommended for very advanced software engineers Details on the protocol are given in a separate document Olson Technology device specific messages which can be obtained from Olson Technology on request The Figure 4 below explains how the OTOT EM55XL interfaces to other devices and a SNMP EMS
90. unmodulated and modulated AM TV FM radio and QAM channels The input monitor controls the INPUT LED As long as the input level is within the AGC range of the transmitter to obtain the specified total RMS modulation index the input LED is lightening in green colour If the number of channels to be transmitted is different from the specified number of channels the total input power level can be calculated using the following expression Pinto dBm 10 log n Uj dBuV 108 7 Where e Pintor is the total RMS input power level e nis the number of channels e Unis the input voltage per channel nominal 80dBuV for unmodulated carriers If the input level voltage of all channels is 80dBuV the diagram below can be used to determine the total input power level Total rms input power for n unmodulated channels with 80 dBuV 10 00 15 00 20 00 total rms power in dBm 25 00 0 10 20 30 40 50 60 70 80 90 100 channel count n Figure 18 Total RMS Input Power for N Unmodulated Channels with 80dBuV OTOT EMS55X XL Optical Transmitter Rev x1 www olsontech com 22 Example 1 The OTOT EM55XL PALD84 is specified for 84 TV channels The nominal input level voltage per carrier is 80dBuV which corresponds to an input level power of 28 7dBm for one unmodulated channel only For 84 un modulated channels the total input level will be 9 5dBm The specified guaranteed AGC range of the OTOT EM55X is 3 6dB The recommended
91. with 5dB noise figure RF input level at 80dBuV TV channel General Properties Parameter Units Specifications Side Mode Suppression dB gt 30 Relative Intensity Noise dBc Hz lt 158 Opt Return Loss lt 40 dB typ lt 160 Optical Connector SC APC standard FC APC optional Optical Fiber Standard Single Mode 9 125 um Nom Input level per TV channel dBuV 80 RF Monitor Output Level dB 20 dB 0 2 to 0 8 dB 862 MHz 1 3 dB 1 GHz Dynamic Range of AGC dB 3 to 6 RF Comnector Impedance IEC 169 2 75Q or F female 750 front or rear side mounted Return Loss dB gt 20 47 MHz 1 5 dB oct min gt 15 Climatic Specification Operation ETS 300 019 class 3 1 Storage ETS 300 019 class 1 2 EMI EN50083 2 April 1996 EN50083 2 A1 February 1998 Power Supply 100 240 Vac Dual redundant hot pluggable 36 72 Voc Power Consumption W lt 60 Enclosure 19 1 RU optionally compatible to ETSI or JIS standards Weight kg 9 7 Weight Ibs 21 4 OTOT EM55X XL Optical Transmitter Rev x1 www olsontech com 13 DE Figure 5 Unit Line Drawing Displays and Alarms The tables below show the conditions that trigger the LED s on the front panel The Modul LED summarizes the condition of the transmitter The IN and Out LED s provide detailed information of the input and output status of the transmitter
92. y provide the possibility to assign a slot number to the specific device The number range is from 1 to 48 Number 49 is reserved In case no numbers are assigned number 50 and above are automatically used In case the device is an Olson Technology product mounted in a BBT00x subrack the slot number is detected and assigned automatically For details see the operational manual of the BBT00x 2 Slot Configuration Microsoft Internet Explorer Qatei Bearbeiten Ansicht Eavoriten Extras 2 Que O ix A G er Heron O Drs mm JOA Adresse E http 172 023 041 103 rackconf htm E wechselnzu Links GE Slot contiguration ECHNOLOGY me Model Name Serial Number Slot Position SNMP NESIot NECE E NECE E TE000582 49 ESTA Di BK ES10A BK ESIOA 1E000582 o a Configure Sits Rack assembly Default rack assembly v en nge Event Log Stotestcs PP General Purpose vO Admerestration SNMP Configuration Server Update Configuration Contig Save Contig Restore Module Identify 150 Module identity i Figure 24 Configure Slots Menu OTOT EM55X XL Optical Transmitter Rev x1 www olsontech com 32 Server Properties Selecting the menu Server the sever properties are displayed as shown in the following figure 3 Server Properties Microsoft Internet Explorer e x Datei Bearbeiten Ansicht Eavoriten Extras 2 a Qu 9 120 Pace from O S 4 H B Adresse dEl http 172 023 041 103 serv_prop html v E wechsei

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OTOT-EM55X_&_XL_Manu.. - Olson Technology Inc.