User`s manual

Moxa E Series Managed Ethernet Switch Featured Functions
3-68
SFP DDM
Optical fiber is commonly used for long distance data transmission. However, when link issues occur, it is very
costly to trouble shoot the fiber cable and fiber transceiver at remote sites. To solve this problem, Moxa
industrial Ethernet switches provide digital diagnostic and monitoring functions on Moxa SFP optical fiber links
and allow users to measure optical parameters and its performance from center site. This function can greatly
facilitate the trouble shooting process for optical fiber links and reduce costs for onsite debug.
Parameter Description
Port No. Switch port number with SFP plugged in
Model Name Moxa SFP model name
Temperature (°C) SFP casing temperature
Voltage (V) Voltage supply to the SFP
Tx power (dBm) The amount of light being transmitted into the fiber optic cable
Rx power (dBm) The amount of light being received from the fiber optic cable
NOTE
Certain tolerances exist between real data and measured data
Parameters Tolerance
Temperature (°C) ± 3°C
Voltage (V) ± 0.1V
Tx power (dBm) ± 3dB
Rx power (dBm) ± 3dB