Keysight Technologies 8163A - Measuring the Reflections from the DUT; Measuring the Power Transmitted through the DUT

206 8163A/B, 8164A/B, 8166A/B User’s Guide
7 Return Loss Measurement
Measuring the Reflections from the DUT
Now detach the measurement patchcord from the Power Meter and attach
it to the DUT. The DUT should be terminated.
Figure 129 Measuring the Reflections from the Device Under Test
The instrument measures the power reflected from the DUT. This power is
called P
DUT
.
Measuring the Power Transmitted Through the DUT
Remove the termination from the DUT and connect the DUT to a Power
Meter so that the power that is transmitted through the DUT can be
measured. This power is called E
il
Figure 130 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 211.
M
dut
P
dut
DUT
Keysight 81610A
Reflection-free
Termination
measurement
patchcord
M
il
measurement
patchcord
DUT
Power Meter
E
il
Keysight 81610A
Reflectivity
R
DUT