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OT1550-DM

Intelligent Direct Modulated

Optical Transmitter Operating Manual

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Summary of Contents for OT1550-DM

Page 1: ...OT1550 DM Intelligent Direct Modulated Optical Transmitter Operating Manual 2 20 01 14 4 4 4 V Ve er rs si io on n 2 2 ...

Page 2: ...50 DM Optical Transmitter 12 4 1 Receiving and Inspecting 12 4 2 Precautions 12 4 3 Mounting OT1550 DM 12 4 3 1 Mounting the OT1550 DM in the Rack 12 4 3 2 Connecting the RF Cables 12 4 3 3 Connecting the Optical Fiber Cables 13 4 3 4 Connecting the Ethernet Cable 13 4 3 5 Connecting Power 13 5 Communication Setup 14 5 1 RS232 Communication Interface Description 14 5 2 Set up the Hyper Terminal 14...

Page 3: ...em Adopt advanced electronic dispersion compensation technology accurately compensate according to the actual transmission distance by 1km stepping The maximum compensated distance up to 50km OT1550 DM intelligent directly modulated optical transmitter is the most important equipment to construct the CATV network It mainly used for the value added services of TV image signal digital television sig...

Page 4: ...fault optical output power is 10mW and the optical output wavelength can choose ITU standard wavelength OT1550 DM II on the base of OT1550 DM I add inter cut function and built in WDM The WDM specification please specify when ordering OT1550 DM III on the base of OT1550 DM II add VOA Variable Optical Attenuator can adjust the signal optical power intensity by the menu options on the front panel Bl...

Page 5: ...FC APC or SC APC Frequency range MHz 47 862 1003 RF input level dBuV 75 85 Flatness in band dB 0 75 RF input impedance Ω 75 Input return loss dB 16 C CSO dB 60 C CTB dB 65 C N dB 51 25Km optical fiber 0dB received AGC control range dB 5 MGC control range dB 0 20 Supply voltage V AC 110V 250V 50Hz Consumption W 30 Operating temperature 0 45 Storage temperature 20 65 Relative humidity Max 95 no cond...

Page 6: ...icator POWER Power on LED green Running indicator RUN Run normally LED flash green Laser OFF LED red Laser indicator Laser ON LED green No output or exceed the normal range LED flash red RF input indicator RF Normal LED green 1 Power indicator 2 Running indicator 3 Laser indicator 4 RF input indicator 5 LCD 6 ESC key 7 UP key 8 DOWN key 9 Enter key 10 RF output test port 11 Laser switch 11 ...

Page 7: ...d stud Used for the connection of device and ground wire 5 Optical input Inserted optical signal input without inter cut function no this port 6 Optical signal output This interface is the optical signal output port of the device If select inter cut function this port is mixed output 7 RS232 interface Used for configuring the network management parameters 8 LAN interface Correspond to IEEE802 3 10...

Page 8: ...ration 3 4 1 Main Menu Displayed parameters Comments Boot display 1 Disp Parameters Menu one Display parameters 2 Set Parameters Menu two Set parameters 3 Alarm Status Menu three Alarm status In 0 0 Out 10 3 dBuV dBm Enter 1 Disp Parameters 2 Set Parameters 3 Alarm Status ES ...

Page 9: ...p xx x Tec Current x xxA RF Chan NO 1 ES IP xxx xxx xxx xxx Msk xxx xxx xxx xxx GTW xxx xxx xxx xxx Mac XX XX XX XX XX XX SofteWare Ver VX X RF Control Mode AGC AGC Ref xdB Laser RF x dBuV RF Ctrl Mode MGC MGC ATT XdB Wave Length xxxx xnm 5V Read x xxV BOX Temp xx x S N xxxx xx xx 5V Read x xxV 24V Read xx xxV OP After ATT xx xdBm Input Power xx xdBm ...

Page 10: ...n no this menu Laser Bais Laser bias current Laser Temp Laser temperature Tec Current Cooler current RF Chan NO Channel number Laser RF Laser RF power RF Ctrl Mode RF control mode MGC ATT MGC attenuation in MGC mode AGC Ref AGC deviator in AGC mode Wave Length Wavelength 5V Read 5V monitoring voltage 5V Read 5V monitoring voltage 24V Read 24V monitoring voltage S N Serial number BOX Temp Temperatu...

Page 11: ...Mode Set MGC ATT Set AGC Ref Set Local IP Address ES YES NO AGC MGC 0dB xdBm Set SubNet Mask Set GateWay xxx xxx xxx xxx Restore Factory Set LaserOutPut Unit mW dbm Set PredATT Mode Auto Manu Set FiberC Length 0Km Set Channel Number x xxx xxx xxx xxx xxx xxx xxx xxx YES NO Set OPT ATT Mode Auto Manu Set OPT ATT 0dB Set OPT Delta 0dB ...

Page 12: ... control mode 1km stepping Set Channel Number Set the channel number Set Local IPAddress Set the IP address Set SubNet Mask Set the subnet mask Set GateWay Set the gateway Restore Factory Restore factory settings Set OPT ATT Mode Set the optical power ATT mode Without inter cut function no this menu Set OPT ATT Set the optical power attenuation Without inter cut function no this menu Set OPT Delta...

Page 13: ...tallation instructions before connecting the system to the power source Warning The plug socket combination must be accessible at all times because it serves as the main disconnecting device 4 3 Mounting OT1550 DM 4 3 1 Mounting the OT1550 DM in the Rack Mounting the OT1550 DM in the standard 19 inch equipment rack 1 Place the equipment in the rack 2 Use four screws fixed the mounting lug on the O...

Page 14: ... noise SNR performance 4 Note to butt the nick of the connectors and align them accordingly 4 3 4 Connecting the Ethernet Cable You can connect the OT1550 DM to your TCP IP network in order to monitor and control the transmitter remotely After you complete the installation procedures described in this chapter you can use a network management system NMS to monitor and control the OT1550 DM To conne...

Page 15: ... TX 3 RX 4 No Connect 5 GND 6 No Connect 7 No Connect 8 No Connect 9 No Connect The serial communication uses the standard NRZ form 1 starts bit 8 data bits 1 stop bit and the baud rate is 38400 5 2 Set up the Hyper Terminal If you have not setup the Hyper Terminal in your Windows system follow the steps Click start menu program accessory communication Hyper Terminal This results in the following ...

Page 16: ...hows the configuration page of serial port As follows Change the serial port configuration to 38400 baud rate 8 data bits no parity bit 1 stop bit no data flow control press the OK button you have set up the Windows serial port Hyper Terminal You can click file save menu to save this configuration of Hyper Terminal for later using ...

Page 17: ...nnect the RS232 port with the computer port Open the Windows Hyper Terminal which you have set up Then turn on the power you will see the page as follows Enter the password to enter the configuration interface Enter the password display the following screen You can input your command in this page and then configure the operating parameter of the application program ...

Page 18: ...e internal commands list of the system as follows You can also use the help command to show help information of other commands such as help ethcfg ethcfg s help information appears as follows List internal commands of the system Configure the Ethernet operating parameters Configure the aim host IP address of the SNMP Trap Configure the SNMP group name Restore the factory default values Set the ser...

Page 19: ... addresses community This command configures the read only group name and read write group name Group name is the concept of SNMP agreement like the password Use the command community ro to configure the read only and community rw for the read write For example input community rw public public is the read write group name The group name for read only and read write are both public as the equipment...

Page 20: ...ork devices exchange easier It is part of the TCP IP protocol group SNMP enables the end users to manage network performance find and solve network problems and arrange for future network upgrades Management Information Base MIB is the organized hierarchical information set Use SNMP to visit these MIB They are composed of manageable information and identified by the object identifier SNMP Transmit...

Page 21: ...or can do more harm than good Never spray a clean air product onto the surface of an optical connector Spraying air onto an optical connector can cause condensation on the connector surface leaving water spots and trapping dust Failing to wipe a connector on dry lens paper immediately after wiping on paper wet with isopropyl alcohol can also lead to condensation on the connector Using low grade cl...

Page 22: ...nance but ask suitable material cost 2 When the equipment breaks down immediately contact service department of MONDO PLAST 3 The site maintenance of the fault equipment must be operated by professional technicians to avoid worse damage Special notice If the equipment has been maintained by users we will not responsible free maintenance We will ask suitable maintenance cost and material cost 6 4 D...

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