EXFO FTB-800 Series for FTB-1 - Manual (Page 146)

Test Setup - Test Configurator, Timer, and System
136 FTB-700G/800 Series
Interface (Ethernet)
Physical Interface

Laser indicates the status of the laser: ON with the laser pictogram
(emitting an optical laser signal) or OFF.

TX Power (dBm) indicates, when supported, the transmit power level
of the optical laser in dBm.

Wavelength (nm) indicates the detected SFP/SFP+ wavelength.
Unknown is displayed if the transceiver is missing or not recognized.

RX Power (dBm) indicates, when supported, the current received
power level of the optical laser in dBm.
Green: Power level in range.
Yellow: Power level out-of-range.
Red: Loss of signal or power level is close to damage.
Gray: Invalid operational range value.

Min RX Power (dBm) indicates, when supported, the minimum
received power level of the optical laser in dBm.

Max RX Power (dBm) indicates, when supported, the maximum
received power level of the optical laser in dBm.

Lasers OFF at Start-Up allows to automatically turn off all lasers when
starting the module or when switching from one test application of the
same group (Ethernet or Transport) to another.