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SSN1SLQ16 board reports LASER_MOD_ERR alarm due to use wrong SFP module

Publication Date:  2012-07-25 Views:  43 Downloads:  0
Issue Description
Customer found that a SSN1SLQ16 board(bom code 03052553) reported LASER_MOD_ERR alarm after it powered on.
Also, Customer could not get the optical power value in performance and SFP manufacture information of this board(see attachment).
The current OSN3500 version is R9C05SPC300(5.21.31.15). SFP optical module belongs to OPNEXT vendor.

Alarm Information
 168072      8     LASER_MOD_ERR                     MJ          end         2012-02-14 18:08:23  0x01   0x00   0x01   0xff   0xff  
  168073      8     LASER_MOD_ERR                     MJ          end         2012-02-14 18:08:23  0x02   0x00   0x01   0xff   0xff  
  168074      8     LASER_MOD_ERR                     MJ          end         2012-02-14 18:08:23  0x03   0x00   0x01   0xff   0xff  
  168075      8     LASER_MOD_ERR                     MJ          end         2012-02-14 18:08:23  0x04   0x00   0x01   0xff   0xff


Handling Process
 Ask customer to use correct SFP module (Bom:03030GGV).

SSN1SLQ16-B2 board only can support follow SFP modules:                       
 SFP module BOM   optical interface Specifications     SSN1SLQ16-B2 BOM Code
   34060484                    I-16                                                          03052551             
   34060485                   S-16.1                                                      03052552             
   03030GGV                  L-16.1                                                      03052553             
   34060488                    L-16.2                                                      03052554       
Root Cause
As the communication bus cant work between the SSN1SLQ16-B2 board and OPNEXT SFP module, so if they are used together, LASER_MOD_ERR alarm will be reported and the manufacture information cant be achieved also.
According R&D design, they should not be used together. Customer got this SFP from warehouse, then inserted it to the board.

Suggestions
None

END