Method used to connect the TDC and RDC optical ports of the OAU board

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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.

Other related questions:
Functions of the VI and VO optical ports of the OAU board
A VOA is configured between the two optical ports. A multiplexed signal is input through the VI port, processed for optical power adjustment, and then output through the VO port. Then the IN port receives the multiplexed signal sent through the VO port.

Method used to enable the laser of an OAU or OBU board
Question: 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. None Answer: 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
  • ; Note: a.
  • 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. b.
  • 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 5.08.02.21 or later NE software versions. 3. PTP command settings The command is as follows: :nptp:bid,17,08,c1,1c,1,0,0,0,0; 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.

    Fiber connections on the optical ports of the WMU board
    The IN1 and IN2 optical ports on the WMU board separately connect to the MON port on two OA or FIU/ITL boards configured in two different transmit directions for centralized wavelength monitoring.

    Split ratio calculation for the MON port of the OAU board on OSN 6800
    The split ratio between the MON port and the OUT port is 1:99. In other words, the optical power of the MON port is 20 dB lower than that of the OUT port, which is calculated using the following formula: Pout (dBm) �?Pmon (dBm) = 10 x lg(99/1) = 20 dB.

    Optical ports of an FIU board
    An FIU board has a total of seven optical ports. The IN/OUT optical port is used to receive and transmit line optical signals. The RC/TC optical port is used to receive and transmit optical signals of the main optical channel. The RM/TM optical port is used to receive and transmit optical signals of the supervisory channel. The MON optical port is used to output optical signals to the spectrum analyzer board for online optical performance monitoring.

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