Exfo FVA-600 Manual de usuario descargar pdf (Pagina 16)

Operating the FVA-600 Variable Attenuator 10

Using the Absolute Mode

The absolute mode displays the current wavelength and attenuation settings.

Note: The attenuation value is the actual insertion loss between the input and

output ports, including connectors.

Using the Relative Mode

The relative mode displays the current wavelength, the total attenuation, and the

relative attenuation. You need to set a reference before using the relative mode.

Note: The reference used is the one that was stored for the current

wavelength.

If you vary the attenuation, the total attenuation introduced by the FVA-600 is

displayed in the top right corner, while the relative loss (or gain) with respect to the

selected reference is displayed in dB.

Current

wavelength

Attenuation

Relative

attenuation

loss/gain

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 214 215

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Exfo FVA-600 Manual de usuario Pagina 16