EXFO FVA-3150 Variable Attenuator - Manual (Page 29)

Setting Up Your Variable Attenuator
Variable Attenuator 23
Selecting the Attenuation
To set the maximum attenuation:
1. Select a wavelength by pressing  until you reach the desired
wavelength.
2. Press the Abs button.
3. Press the Attenuation button and set an attenuation of -99.999 dB.
4. Press ENTER. The Variable Attenuator will default to the maximum
attenuation.