Exfo FTB -5240S/5240BP Optical Spectrum Analyzer for FT Instrukcja Użytkownika Pobierz pdf (Strona 138)

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101

Setting Up the Instrument in Drift Mode

130 FTB-5240S/5240BP

Setting Up Drift Analysis Parameters

³ Power offset (dB): indicates the offset value applied on the 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 use. 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.

³ Bandwidth at (dB): Set the power level used, relative to the

channel peak power, to compute the bandwidth.

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.

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Exfo FTB -5240S/5240BP Optical Spectrum Analyzer for FT Instrukcja Użytkownika Strona 138

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