Does Mid Grades（Upper Grades & Lower Grades） mean the average quality of the signal or the height of the electric eye?
what is the Last Fom and Initial FOM?
Is there a detailed introduction to this aspect?
Operational Info
State : Active
Physical state : Disabled
Speed : IB-NDR
Width : 4x
FEC : Standard_RS-FEC - (544,514)
Loopback Mode : No Loopback
Auto Negotiation : ON
Supported Info
Enabled Link Speed : 0x00000080 (NDR)
Supported Cable Speed : 0x00000080 (NDR)
Troubleshooting Info
Status Opcode : 0
Group Opcode : N/A
Recommendation : No issue was observed
Tool Information
Firmware Version : 31.2012.1024
amBER Version : 3.2
MFT Version : mft 4.28.0-92
EYE Opening Info
FOM Mode : SLRG_FOM_MODE_EYEO
Lane : 0, 1, 2, 3
Initial FOM : 85, 71, 80, 75
Last FOM : 84, 75, 81, 72
Upper Grades : 88, 70, 78, 74
Mid Grades : 100, 92, 97, 94
Lower Grades : 91, 71, 84, 79