Problem Description
SSN2BPA01 veneer board, the input power of BA module is -1dbm, but the OUT output of BA has no power output.
Alarm information
None
Processing
1. Query the input power and input wavelength of the BA module of SSN2BPA single board, which are -1db and 1550NM respectively, and there is no problem.
2, the site found that the PA module of this single board is not in use, try to introduce the PA module into the input light, and found that the output of the BA module is normal, and at the same time, the PA module also works normally.
Root cause
Further confirmation of the reason that: SSN2BPA single board BA, PA module is integrated in a single optical module, when the single board to start the ALS function, if there is no optical input of any module BA and PA, it will shut down the output of the two optical ports.
Suggestions and Summary
BPA veneer boards are used together in daily applications, so the ALS function is usually turned on by default; if you use only one optical port of SSN2BPA veneer board, please use the following commands to turn the ALS function off:
:cfg-set-als:board-number,optical-port-number,disable;