User`s guide

What is Insertion Loss? Getting Started with Return Loss
Agilent 81610A/11A/12A/13A/14A Return Loss Module, Fifth Edition 17
What is Insertion Loss?
Light that is absorbed, scattered, or reflected by a component also
affects how much light a component transmits.
The transmission factor for a component is a measure of how much
light the component transmits. It is a ratio of the power transmitted by
the device to the power incident on the device. More normally we talk
about the Insertion Loss of a component. The insertion loss has units
of dB. Insertion Loss is given by:
Insertion Loss can be measured in several ways.
A typical setup using the Agilent 81610A Return Loss module, where
the DUT is a connector pair, is described in Figure 7
Figure 7 Measuring the Power transmitted through the Device Under Test
You can use E
il
to calculate the insertion loss, see “Calculating the
Insertion Loss of the DUT” on page 43
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Agilent 81113PC