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FiberLabs OTM-1550L, Operating Manual

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FiberLabs OTM-1550L Operating Manual Download Page 3

 

 

Technical passport / OTM-1550 

12-2016-v4

1. Overview 

1.1 About This Manual 

This instruction manual is a complete guide to install and operate the (1RU) 

OTM-1550L optical transmitter. Please read the entire manual before beginning 
installation. 

This manual applies to OTM-1550L optical transmitter. 

• Chapter 1 gives general information about the OTM-1550L optical transmitter. 
• Chapter 2 describes the complete technical specifications of OTM-1550L. 
• Chapter 3 describes the front/rear panel interfaces and menu system. 
• Chapter 4 tells you how to install OTM-1550L optical transmitter. 
• Chapter 5 tells you the communication setting of OTM-1550L. 
• Chapter 6 describes maintenance and what to do in the event of problems. 

1.2 Product Description 

OTM-1550L intelligent directly modulated optical transmitter is mainly used in 

1550nm optical fiber transmission system. Adopt advanced electronic dispersion 
compensation technology, accurately compensate according to the actual transmission 
distance by 1km stepping. The maximum compensated distance up to 50km. 

OTM-1550L 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 signal, telephone voice 
signal and data (or compressed data) signal. By built-in WDM, multiplex the inter-cut 
optical signal and the main optical signal then output. After setting required optical 
difference, the perfect adjustable optical attenuation function can automatic control 
the inserted optical signal according to the main optical signal, realize inter-cut system 
full automatic adjustment. Provide high quality low cost

 

solution for all-optical relay 

1550 optical fiber CATV system, and local value-added services inter-cut. 
 

Characteristics: 

1.

 

Patent pre-distortion circuit. 

2.

 

The optical fiber distance is adjustable according to the actual use condition by 
1km stepping. 

3.

 

OTM-1550L

Ⅱ

: Built-in WDM, multiplex the inserted optical signal and the main 

optical signal then output. 

4.

 

OTM-1550L 

Ⅲ

: Built-in WDM and adjustable attenuator. 

 

Summary of Contents for OTM-1550L

Page 1: ...Technical passport OTM 1550L OTM 1550L Intelligent Direct Modulated Optical Transmitter Operating Manual ...

Page 2: ...al Transmitter 12 4 1 Receiving and Inspecting 12 4 2 Precautions 12 4 3 Mounting OTM 1550L 12 4 3 1 Mounting the OTM 1550L in the Rack 12 4 3 2 Connecting the RF Cables 13 4 3 3 Connecting the Optical Fiber Cables 13 4 3 4 Connecting the Ethernet Cable 13 4 3 5 Connecting Power 14 5 Communication Setup 14 5 1 RS232 Communication Interface Description 14 5 2 Set up the Hyper Terminal 14 5 3 Operat...

Page 3: ...rding to the actual transmission distance by 1km stepping The maximum compensated distance up to 50km OTM 1550L 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 signal telephone voice signal and data or compressed data signal By built in WDM multiplex th...

Page 4: ... function and built in WDM The WDM specification please specify when ordering OTM 1550L III on the base of OTM 1550L II add VOA Variable Optical Attenuator can adjust the signal optical power intensity by the menu options on the front panel Block Diagram OTM 1550L directly modulated optical transmitter block diagram OTM 1550L inter cut part block diagram 1 3 Product Applications 1550nm Optical fib...

Page 5: ...latness 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 condensation Dimension mm 483 L 380 W 44 H Special instructions The performance ...

Page 6: ...dicator 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 3 1 1 Indicator Description Power indicator 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 ...

Page 7: ...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 10Base T used for network management 9 Switching power supply Hot plug 9 8 9 5 6 7 2 3 4 1 3 3 Power Module 3 3 1 220V ...

Page 8: ... Main Menu In 0 0 Out 10 3 dBuV dBm Enter 1 Disp Parameters 2 Set Parameters 3 Alarm Status ESC 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 ...

Page 9: ...Current x xxA RF Chan NO 1 ESC 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 Input Power xx xdBm OP After ATT xx xdBm ...

Page 10: ...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 Temperature IP IP M...

Page 11: ... ATT Set AGC Ref Set Local IP Address ESC 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 YES NO Set OPT ATT Mode Auto Manu Set OPT ATT 0dB Set OPT Delta 0dB xxx xxx xxx xxx ...

Page 12: ...e 1km stepping Set Channel Number Set the channel number Set Local IP Address 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 Set the di...

Page 13: ...utions when working with the OTM 1550L Warning Read the installation 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 OTM 1550L 4 3 1 Mounting the OTM 1550L in the Rack Mounting the OTM 1550L in the standard 19 inch equipment rack 1 Place the equipment in...

Page 14: ...e OTM 1550L optical connector has not been exposed to any contamination NOTE Any contamination of optical connector can significantly degrade optical link performance This degradation will most likely manifest itself as poor signal to 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 OTM 1550L to your ...

Page 15: ... Turn on the power source It takes about 60 seconds for all systems to operate 5 Communication Setup 5 1 RS232 Communication Interface Description Adopt DB9 standard connector the pin definitions as follow 1 No Connect 2 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...

Page 16: ...and choose the serial port to connect with your equipment As follows Press the OK button shows 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 ...

Page 17: ...er using 5 3 Operating Parameters Configuration Under the condition of power off use the serial port lines to connect 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 ...

Page 18: ...t f the SNMP Trap ult values go and equipment model Log out of the application program System ollowing commands help List internal commands of the system Configure the Ethernet operating parameters Configure the aim host IP address o Configure the SNMP group name Restore the factory defa Set the serial number Set the login password Set the lo ethcfg settrap communit Restor setsn setpswd entpl E ...

Page 19: ...sion program name and the internal commands list of the system as follows help This command shows current application progr You can also use the help command to show help information of other commands such as help ethcfg ethcfg s help inform appears as follows ation ethcfg ...

Page 20: ...gin password his command is used to set the logo and equipment model his command is used to log out a settrap This command shows or modifies the aim host IP address list of the SNMP Trap IP address of 0 0 0 0 th 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...

Page 21: ...mation Base MIB is the organized hierarchical information d of manageable information ation When the transmitter initial work the IP address and gateway are in the default state you need to configure them The configuration of initial state can be achieved through the RS 232 interface or the front panel keys Other configurations see our Network management operation manual kes the management informa...

Page 22: ...re 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 cleaning paper...

Page 23: ...n the equipment breaks down immediately contact local distributor or directly call our technical support hotline 86 0571 82576002 18967160936 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 m...

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