EXFO FVA-3150 Variable Attenuator - Manual (Page 26)

Setting Up Your Variable Attenuator
20 FVA-3150
Selecting the Attenuation
Selecting the Attenuation
The attenuation can be set using two methods:

By using the up and down arrows buttons, the attenuation is modified
one step (up or down) at a time.

By using the Attenuation button, you can quickly and precisely set the
attenuation to a specific value
The available step sizes are: 0.01, 0.02, 0.05, 0.1, 0.2, 0.5, 1, 2, 5, 10, 20, and
50 dB.
Note: Selecting a larger step size allows for faster attenuation scanning.
To change the step size:
1. Press the Setup button.
2. Press the left/right arrows until STEP is displayed.
3. Press ENTER. The current step size will start flashing.
4. Using the up/down arrows, select one of the available step sizes.
5. Press ENTER.
6. To exit the Setup menu, press the Setup button.