OptoTest OP940-SW Instruction Manual page 38

OP940-SW
Example 3: Referencing and Measuring Insertion Loss
To take the reference for an insertion loss measurement, connect the reference cable
from the source directly to the detector port of the instrument.
Input
Select the desired mode screen, such as ILRL, and then select the IL Ref option.
On the proceeding screen, select the
Start IL Ref option. The instrument will
select each of the sources, measure their
absolute power, and store the reference
accordingly. The process might take a
few seconds.
After referencing insertion loss, the unit
will begin to display the relative power in
real time. After referencing insertion loss,
press the Home Button to return to the
measurement screen.
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