EXFO FTB -5240S/5240BP Optical Spectrum Analyzer for FTB 500 (NS-1434) - Manual (Page 402)

Managing Results
394 FTB-5240S/5240BP
Managing EDFA Test Results
³
Output power offset (dB): indicates the offset value applied on
the output power. You can use an offset to adjust your unit. This
does not replace a calibration performed at EXFO, but it can help
you achieve the specifications if you have determined that, for
example, your modules are used beyond the normal allowed. The
power offset appears in the graph, on the left, above the
arrow.
To edit the power offset value in percentage, press Edit % button.
The percentage value entered in Edit percentage will be
converted to a corresponding equivalent value in dB.
5. Press OK to save the changes and close the window, or press Cancel to
exit without saving.
Press Restore Defaults to remove all the changes and apply the default
values.