EXFO FVA-3150 Variable Attenuator - Manual (Page 7)

Variable Attenuator 1
1 Introducing the FVA-3150
Variable Attenuator
Main Features
The FVA-3150 Variable Attenuator is the instrument that allows you to
perform several attenuation related tasks.
The FVA-3150 Variable Attenuator is configured for singlemode and
multimode fibers. It is built to offer a high spectral uniformity, an important
feature which allows you to maintain the attenuation value throughout the
entire WDM spectrum. Its low insertion loss allows you to minimize your
loss budget.
The FVA-3150 Variable Attenuator has a program function, which allows
you to create custom programs such as automatic attenuation scan.
The Variable Attenuator has the versatility of three display modes:

Absolute, which includes the insertion loss.

Reference, in reference to the 0.001 dB level.

Offset, relative display to any selected reference value.
The FVA-3150 Variable Attenuator is controlled by easy-to-use software,
enabling multiple-user configuration storage.
The FVA-3150 Variable Attenuator can be remotely controlled through a
GPIB or RS-232 interface.