... EPON/GPON networks and services.Functions:-Test three wavelength signal including 1490nm, 1550nm, 1310nm-1310nm wavelength upstream burst signal testing ... , pass/alarming/fail, three indicators are correspondentwith tested optical line status-Built-in 500 records and upload via ... and fracture, opticaltransceivers fault etcMake an easy evaluation for optical power in anyplace of whole network from OLT to ...