In the PRBS test, the OTU sends out the PRBS code and monitors the PRBS code that is looped back from the remote board. After comparing the PRBS code that is sent with the code that is received, you can determine that the current link or equipment is normal or not.
Prerequisites
The corresponding OTU must be configured.
The service type must be set according to the board type.
Before enabling the PRBS test on the client side, ensure that the client-side lasers of all OTU boards are turned on.
When enabling the PRBS test, you need to enable PRBS Through of the port on the board.
Background Information
In the case of OptiX ONS 3800A/6800A/8800(NA) series, 12NS2, 11ND2, 12TQM, 12LSX, 11LQG, 12LQMS, 12LQMD, 13LQM, 11LOM, 11TOM, 11TQX, 12TDX, 12LSXL, LSQ, 51NQ2, 11LOG, 12ND2, 12LOG, 12LDX, 12ELQX, 12PTQX, 12LOM, 52NS3, 52ND2, 52NS2, 52NQ2, 52TQX, 52TDX, 52TOM, 11LEX4, 11LEM24, 53TSXL, 54ENQ2, 54NPO2, 11LEX4, 11LEM24 boards, only the WDM side supports the PRBS function of sending PRBS signals. In the case of the 12LSX, 11TMX and 12TMX boards, both the client and WDM sides support the PRBS function of sending PRBS signals.
In the case of OptiX ONS 1800(NA) series, LDE, LQPU, LQPL, ELOM, LOE, LOEU, LSX boards, only the WDM side supports the PRBS function of sending PRBS signals.
This section describes the PRBS test on the meter board. For details on how to set the PRBS Through field of the auxiliary board, refer to Configuring the PRBS Test Status of the Auxiliary Board.
Precautions
NOTICE: When the PRBS test is performed, it is not allowed to access services. A PRBS test is used only in deployment. After the deployment, set PRBS Through to OFF.
Procedure
- In the NE Explorer, select a board and choose from the Function tree.
- Select a channel or a port in the right interface, and set Test Mode, Test Duration (min) and Report Interval (s).
NOTE: - PRBS testing affect the service of the board. Before PRBS testing, configure state of the port as OOS and configure Maintenance of the port as Remove at the WDM Interface. After setting the parameters, configure Maintenance of the port as Restore and restore state of the port to IS.
- Before PRBS testing, set the Service Type of the port as OTN service or SONET service according to the need.
- Click Start to Test. A dialog box indicating that this operation may interrupt the service is displayed.
- Click OK to start the PRBS test.
- After the test is complete, view the values of Error Seconds Count Based On LSS, Error Count, Current Status and other parameters in the bottom pane of the user interface.