Setting up Your IQ-3100 and/or IQ-3300
Variable Attenuator/Variable Reflector
35
Selecting a Display Mode
Absolute Mode
By default,
Absolute
mode is selected upon initial activation.
When in
Absolute
mode, the total attenuation or reflection introduced by
the module is displayed in the data display. The absolute value and the
offset value are also taken into account.
I
MPORTANT
For the IQ-3100, the total or absolute attenuation referred to in this
manual is the actual optical insertion loss between the input and
output ports, including the connectors.
In the figure below, the IQ-3100 BW Variable Attenuator is set in the
Absolute
mode.
Attenuation displayed = absolute atten offset
.
Offset
Attenuation
displayed
Absolute
attenuation
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