Optical Signal Status
Overview
Use this screen to view the PON (Passive Optical Network) transceiver’s TX power and RX power level and temperature.
The Optical Signal Status Screen
Click System Monitor > Optical Signal Status to open the Optical Signal Status screen to see the real-time DDMI (Digital Diagnostics Monitoring Interface) parameters.
The PON transceiver’s support for the DDMI function lets you monitor the PON transceiver’s parameters to perform component monitoring, fault isolation, and failure prediction tasks. This allows proactive, preventative network maintenance to help ensure service continuity.
System Monitor > Optical Signal Status
The following table describes the labels in this screen.
LABEL | Description |
|---|---|
Optical Signal Information | |
SFP presence | This displays whether the SFP transceiver is inserted. |
SFP vendor | This displays the vendor name of the inserted SFP transceiver. |
SFP model | This displays the model name of the inserted SFP transceiver. |
SFP serial | This displays the serial number of the inserted SFP transceiver. |
RX power signal | This displays the PON transceiver’s receiving power in dBm. |
TX power signal | This displays the PON transceiver’s transmitting power in dBm. |
Temperature | This displays the PON transceiver’s temperature in degrees Celsius. |
Make sure the fiber optic cable is well connected to the PON port.The following table shows the normal range of optical signal information.
LABEL | normal range |
|---|---|
RX power signal | -9 to -28 dBm The higher the value, the stronger the signal as there is less background noise. For example, -9 dBm is a stronger signal than -28 dBm. |
TX power signal | 4 to 9 dBm |
Temperature | 0 to 85 degrees Celsius (185 degrees Fahrenheit) |
If the TX and RX power signals of the DDMI are out of range, inspect the fiber optic cable for dirt, any fiber optic cable bends or excessive curves. If the fiber optic cable is clean and undamaged, use the power meter to measure whether the actual RX power signal of the Zyxel Device falls within the normal range.