VeEX FX120, Руководство пользователя

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Thresholds Adhering to the Current XGS-PON Standard s
For latest revisions of GPON standards, please visit https://www.itu.int/rec/T-REC-G.984.2-201908-I
and for XGS-PON standards, please visit https://www.itu.int/rec/T-REC-G.9807.1/en
Synchronizing the FX120 with the ONU Activation Process
The FX120 will synchronize to the downstream frame (from the OLT) provided the OLT is operational and 1490/1577nm signal level is good. The
downstream frame synchronization indicator should occur almost immediately.
In order to synchronize with the ONU, the FX120 needs to see the ONU registration process. Therefore, only connect the ONU AFTER the FX120
application is already running. Otherwise, power cycle the ONU after the FX120 application is running if the ONU is already connected to the FX120.
If the OLT and an active ONU are connected to the FX120 before starting the test application, the
FX120 will not see the ONU activation and the above process will not be completed. In this instance,
LOF will be reported for the upstream side; no ONU ID or ONU S/N information on the OPM results
page will be displayed.
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