4: Port configuration
Transmit power
Measured coupled TX output power. Accuracy is vendor specific but must be better than 3dB over specified operating
temperature and voltage. Data is assumed to be based on measurement of a laser monitor photodiode current. Data is
not valid when the transmitter is disabled.
Receive power
Measured received optical power. Absolute accuracy is dependent upon the exact optical wavelength. For the vendor
specified wavelength, accuracy should be better than 3dB over specified temperature and voltage. This accuracy should
be maintained for input power levels up to the lesser of maximum transmitted or maximum received optical power per the
appropriate standard. It should be maintained down to the minimum transmitted power minus cable plant loss (insertion
loss or passive loss) per the appropriate standard. Absolute accuracy beyond this minimum required received input optical
power range is vendor specific.
Supply voltage
Internally measured transceiver supply voltage. Note that in some transceivers, transmitter supply voltage and receiver
supply voltage are isolated. In that case, only one supply is monitored. Refer to the device specification for more detail.
SFP thresholds
Temperature
High alarm
High Alarm transceiver temperature.
Low alarm
Low Alarm transceiver temperature.
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