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Prevail-Catv WT-1550-EM10 Operating Manual

1550nm external modulated optical transmitter
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WT-1550-EM10
1550nm External Modulated
Optical Transmitter
Operating Manual
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Summary of Contents for Prevail-Catv WT-1550-EM10

  • Page 1 WT-1550-EM10 1550nm External Modulated Optical Transmitter Operating Manual...

  • Page 2: Table Of Contents

    3.4.5 AGC Mode ..................- 12 - 3.4.6 MGC Mode ..................- 12 - 3.4.7 SBS Suppression Adjustment ............- 12 - 4. Installing the WT-1550-EM10 Optical Transmitter ..........- 13 - 4.1 Receiving and Inspecting ................- 13 - 4.2 Precautions ....................- 13 - 4.3 Mounting WT-1550-EM10 ................

  • Page 3: Safety Instruction

    WT-1550-EM10 1550nm external modulated optical transmitter operating manual 6. Maintenance and Troubleshooting ..............- 24 - 6.1 Cleaning Fiber Optic Connectors............... - 24 - 6.1.1 Cleaning Patch Cord or Pigtail Fiber Optical Connectors ....- 24 - 6.2 Troubleshooting ..................- 25 - 6.3 After-sales Service Description ..............

  • Page 4: Overview

    • Chapter 2 describes the complete technical specifications of WT-1550-EM10. • Chapter 3 describes the front/rear panel interfaces and menu system. • Chapter 4 tells you how to install WT-1550-EM10 series external modulated optical transmitter. • Chapter 5 tells you the communication setting of WT-1550-EM10.

  • Page 5: Product Applications

    WT-1550-EM10 1550nm external modulated optical transmitter operating manual Stimulated Brillouin Scattering (SBS) occurs, when the optical input power is greater than a certain threshold value. SBS generate the lower frequency backscattered light which will attenuate the transmission light and return to the laser while destroying its performance.

  • Page 6: Technique Parameters

    WT-1550-EM10 1550nm external modulated optical transmitter operating manual 2. Technique Parameters 2.1 Optical Parameters Item Unit Value Optical Wavelength 1545～1560 (or specified by the user) Side-mode Suppression ratio >30 Relative Intensity Noise dB/Hz <-155 Optical Power 1*3, 1*5,1*6 SBS Threshold Value +13～+16.5 (Continuously adjustable)

  • Page 7: Test Condition

    WT-1550-EM10 1550nm external modulated optical transmitter operating manual 2.3 Test Condition First Second Second First stage paragraph stage paragraph EDFA (dBm) fiber length EDFA fiber length Tx/Rx 0dBm 13.5 Link 1 35km 0dBm 13.5 Link 2 16dBm 65km 0dBm Link 3...

  • Page 8: Panel Interface And Menu System Description

    WT-1550-EM10 1550nm external modulated optical transmitter operating manual 3. Panel Interface and Menu System Description 3.1 Front Panel RF modulation degree Power indicator AGC indicator indicator Laser indicator ESC key UP key DOWN key Enter key RF input port (or on the...

  • Page 9: Rear Panel

    WT-1550-EM10 1550nm external modulated optical transmitter operating manual 3.2 Rear Panel Ground stud Power module RF input port (or on the front RS232 interface LAN interface panel, optional) Optical output interface (or on the front panel, optional) 3.3 Power Module 3.3.1 220V Power Module...

  • Page 10: Power Module

    WT-1550-EM10 1550nm external modulated optical transmitter operating manual 3.3.2 48V Power Module Mounting screws + Positive terminal block - Negative terminal block 3.4 Menu Operation 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...

  • Page 11: Display Menu

    WT-1550-EM10 1550nm external modulated optical transmitter operating manual 3.4.2 Display Menu Displayed Displayed Comments Comments parameters parameters Laser Output Output optical power +24V Read: +24V monitor voltage Laser Bias Laser current +12V Read: +12V monitor voltage CSO monitor voltage -12V monitor voltage...

  • Page 12: Set Menu

    WT-1550-EM10 1550nm external modulated optical transmitter operating manual 3.4.3 Set Menu Displayed parameters Comments Remarks MODE Set RF control mode MGC and AGC two modes selectable Adjustable range 0~15dB with MGC mode Set RF adjusted value Set AGC Set MGC...

  • Page 13: Alarm Menu

    WT-1550-EM10 1550nm external modulated optical transmitter operating manual 3.4.4 Alarm Menu The displayed alarm content Comment RF IN Status HIGH（LOW） The RF input signal is high (low) Laser Bais HIGH（LOW） The laser bias current is high (low) Laser TEC HIGH...

  • Page 14: Installing The Wt-1550-Em10 Optical Transmitter

    4.2 Precautions Heed the following precautions when working with the WT-1550-EM10. Read the installation instructions before connecting the system to the power source.

  • Page 15: Mounting Wt-1550-Em10

    Mounting the EM10 in the standard 19 inch equipment rack: 1. Place the equipment in the rack. 2. Use four screws fixed the mounting lug on the WT-1550-EM10 front panel to the rack. 3. Reliably ground the equipment. The ground terminal is on the rear panel.

  • Page 16: Connecting The Ethernet Cable

    WT-1550-EM10 1550nm external modulated optical transmitter operating manual 4.3.4 Connecting the Ethernet Cable You can connect the WT-1550-EM10 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 WT-1550-EM10.

  • Page 17: Communication Setup

    WT-1550-EM10 1550nm external modulated optical transmitter operating manual 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...
  • Page 18 WT-1550-EM10 1550nm external modulated optical transmitter operating manual Then you input your connection name, such as “SNMP38400”，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”...

  • Page 19: Operating Parameters Configuration

    WT-1550-EM10 1550nm external modulated optical transmitter operating manual 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.
  • Page 20 WT-1550-EM10 1550nm external modulated optical transmitter operating manual System supports the following commands: help List internal commands of the system; ethcfg Configure the Ethernet operating parameters; settrap Configure the aim host IP address of the SNMP Trap; community Configure the SNMP group name;...
  • Page 21 WT-1550-EM10 1550nm external modulated optical transmitter operating manual and gateway. You can refer to the help information for its using. settrap This command shows or modifies the aim host IP address list of the SNMP Trap, IP address of 0.0.0.0 and 255.255.255.255 don’t exist. SNMP Trap does not send to these two addresses.

  • Page 22: Remote Monitoring: Snmp

    WT-1550-EM10 1550nm external modulated optical transmitter operating manual 5.4 Remote Monitoring: SNMP LAN communication interface Adopt RJ45 standard connector, the pin definitions as follow: 1: TX+ 2: TX- 3: RX+ 4: No Connect 5: No Connect 6: RX- 7: No Connect 8: No Connect A: Green indicator flashing means that the LAN port is sending data.

  • Page 23: Web Network Management

    WT-1550-EM10 1550nm external modulated optical transmitter operating manual 5.5 WEB Network Management Open the IE browser, type the IP address and enter the interface as follows: Type the user name admin and the password 123456 (factory default), enter the following interface:...
  • Page 24 WT-1550-EM10 1550nm external modulated optical transmitter operating manual Click Set Paraments to enter Set Paraments interface as follows: The Item and Items columns list the parameters that can be changed, the Current column lists the present parameter values, the New column can select or type the new parameter values, and the Update column can update the parameters.

  • Page 25: Maintenance And Troubleshooting

    We recommend that you clean all mating fiber connectors before connecting them to an optical transmitter. In addition, if you suspect that the optical connector of WT-1550-EM10 may have been exposed to contamination (by a dirty fiber cable connector, for example), you should properly clean the WT-1550-EM10 optical connector before connecting the optical fiber.

  • Page 26: Troubleshooting

    WT-1550-EM10 1550nm external modulated optical transmitter operating manual 6.2 Troubleshooting Should a problem occur, see if the symptoms are listed in Table 6-1. Table 6-1: Troubleshooting Solutions Indicator Fault Alarm menu content Solution status phenomenon The left (right) Plug in the left (right) power...

  • Page 27: After-Sales Service Description

    WT-1550-EM10 1550nm external modulated optical transmitter operating manual Reboot the equipment. If that OutPutPower Status HIGH The laser is off does not correct the problem, (LOW) contact Customer Service. Check the fiber connector. The optical output Follow the connector cleaning power is lower procedure (see Section 6.1).

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