EXFO IQS-3150 Variable Attenuator for IQS-500/600 - Manual (Page 40)

Setting Up Your Variable Attenuator
34 IQS-3150
Control Center Settings and Controls
Defining an Offset Value
The offset value is not applied to a particular wavelength. It does not affect
the filter attenuation. It can be used to compensate for the loss generated
elsewhere in the system.
To define an offset value:
1. Click the Instrument function tab.
2. Under Offset, enter de desired value in the box and click to accept
the value.
Note: The offset values must be between -99.999 dB and 99.999 dB. The
attenuation value is positive; therefore, when the offset value is positive,
the displayed attenuation increases.