EXFO IQS-3150 Variable Attenuator for IQS-500/600 - Manual (Page 38)

Setting Up Your Variable Attenuator
32 IQS-3150
Control Center Settings and Controls
Selecting a Wavelength and a Fine-Tuning Step
The attenuator wavelength must be set as closely as possible to the
wavelength of the optical source. The IQS-3150 Variable Attenuator module
provides a wide range of wavelengths: 1250 nm to 1650 nm for singlemode
modules and 700 nm to 1350 nm for multimode modules.
The fine-tuning step can be as low as 0.002.
The lists of available values are built on the Settings tab (refer to
Customizing the Wavelength and Fine-Tuning Step Lists on page 22).
To select a wavelength and a fine-tuning step:
1. Click the Instrument function tab.
2. Under Wavelength, use the up/down arrows to select the wavelength,
and click .
3. Under Fine-Tuning Step, use the up/down arrows to select the
fine-tuning value.