At any customer location after the OLT and splitter, the FX120 will display 1490nm and 1310nm signal level values for GPON, 1577nm and 1270nm for
XGS-PON, and 1550nm for RF/CATV. ODN Loss is the difference between the transmitting signal from the OLT (TX) and the DS signal level measured at
the FX120 location.
If the OLT is not broadcasting its output power, the span loss value cannot be calculated.
Green, yellow, and red table colors indicate whether signal levels pass or fail against ITU-T G.984 standard threshold values configured in Setup. Refer to
Test and Profile Settings
for information on test profile setup.
Green:
The measured signal is above the critical threshold.
Yellow:
The measured signal is below marginal and above critical.
Red:
The measured signal level is below the critical threshold and does not meet the specification.
Upstream/Downstream/TC-Sync Signal Status
For more information, refer to
Signal and Synchronization Status
.
Test and Profile Settings
Setup:
Setup Test profile
Advanced:
Leads to the Advanced Setup, Results, PLOAM and OMCI Decoder, and Active ONU
list.
6.0.2 Signal and Synchronization Status
The Status table displays detected 1490nm/1577nm downstream, 1310nm/1270nm upstream, and TC-Sync status.
GPON Signal and Synchronization Status Table
XGS-PON Signal and Synchronization Status Table
Status Table
1490nm/1310nm:
If OK is displayed, light in the downstream 1490nm or upstream 1310nm direction is detected.
1577nm/1270nm:
If OK is displayed, light in the downstream 1577nm or upstream 1270nm direction is detected.
Transmission Connectivity Sync (TC-Sync):
OK UL/DL indicates that the FX120 is properly synchronized with the OLT and ONU/ONT traffic. No
UL/DL indicates the OLT and ONU/ONT are not synchronized properly. Consult VeEX technical support if unable to achieve TC-Sync.
OK indicates US or DS light is detected, but does not indicate whether ITU-T Threshold values are
met or if the OLT and ONU/ONT are properly synchronized.
LED Status
Upstream/Downstream LED Status
FX120_User_Manual_RevA02
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