Method used to enable the laser of an OAU or OBU board


All series of OAU and OBU boards can function as wide-spectrum light sources during deployment commissioning. Therefore, you need to learn the commands used to forcibly enable the lasers on the boards.
1. The commands used to forcibly enable the lasers on all series of OAU and OBU boards are the same. You can run a command on the Navigator or run a PTP command to enable the lasers. The former method cannot be used in some versions.
2. Command line settings
Run the :cfg-set-oaworkmode command to forcibly enable the lasers on the boards.
The command format is as follows: :cfg-set-oaworkmode:

  • Bid
  • ,
  • Port
  • ,
  • Path
  • ,
  • Mode
  • ,
  • Password
  • ;
  • Mode
  • indicates the board enable status and can be set to gainlock or powerlock, corresponding to the gain-locking mode and power-locking mode respectively.
  • Password
  • indicates the verification password used to enable a laser. The default value is dange.
    c. When a laser is forced to emit light, the output optical power of the optical amplifier board is always 10 dBm.
    d. This function is supported by or later NE software versions.
    3. PTP command settings
    The command is as follows:
    In the preceding command, 17 and 08 are command words, c1 and 1c are check bytes, 1 indicates secure working mode while 0 indicates normal working mode (However, the digit here must be set to 1.), and the last 4 bytes indicate the target optical power parameter (a value 10 times the actual optical power). When the optical power is a negative value, the value is expressed as two's complement. For example, the output optical power is 6 dBm by running the :nptp:bid,17,08,c1,1c,1,0,0,0,3c; command, and the output optical power is �?0 dBm by running the :nptp:bid,17,08,c1,1c,1,ff,ff,ff,9c; command. In the later command, the negative optical power value is expressed as complements.

    Other related questions:
    Method used to connect the TDC and RDC optical ports of the OAU board
    A DCM module can be connected between the two ports. If dispersion compensation is not required, the two ports can be directly connected using an optical fiber.

    Method used to set the status of the laser on the OBU board
    In the NE Explorer, select the OBU board and choose Configuration > WDM Interface from the navigation tree. In the window that is displayed, set the laser status as required.

    Method used to query the optical power of the OBU board
    Right-click the OBU board on the NMS and choose Query Optical Power from the shortcut menu that is displayed.

    Method used to shut down a board laser
    Select the desired board in the NE Explorer. Choose Configuration > WDM Interface from the navigation tree. Select By Board/Port(Channel) and choose Channel from the drop-down list. On the Basic Attributes tab, double-click Laser Status of the desired optical port, and then select Enable or Disable from the drop-down list to change the laser status.

    Whether it is feasible to replace OBU in the OSN 6800 with OAU
    OAU boards have greater gain than OBU boards. Replacing OBU with OAU will increase the line gain. Large gain, however, will introduce noises. Therefore, the replacement is not recommended. You are advised to use Huawei professional WDM network optimization service to evaluate the entire network performance before determining a replacement solution.

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