Agilent Technologies 8163A Manual page 185

Return Loss Measurement
NOTE
Agilent 8163A/B, 8164A/B & 8166A/B Mainframes, Sixth Edition
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Measuring the Insertion Loss
To measure insertion loss, you measure the power transmitted through the
DUT, as shown in Figure 107 .
As you have already, in Step 2 on page 182, set the [Ref] parameter to the
power transmitted through the Reference Cable. The displayed power in
dB is equal to the insertion loss.
Set the Front Panel Delta as described on "Front Panel Delta Calibration"
on page 181.
Return Loss Measurement
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