Agilent Technologies 4395A, Manual Change

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Reection Measurement (NA)
1. Press 4 Cal 5
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CALIBRATE MENU
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S11 1-PORT .
2.
Connect the OPEN standard to port 1. Then press
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[S11]: OPEN . (The softkey label
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OPEN
is underlined when the measurement is complete .)
3.
Connect the SHORT standard to port 1. Then press
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SHORT . (The softkey label
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SHORT is
underlined when the measurement is complete .)
4.
Connect the LO AD standard to port 1. Then press
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LOAD . (The softkey label
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LOAD is
underlined when the measurement is complete .)
5.
Press
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DONE: 1-PORT CAL . (
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CORRECTION on OFF is automatically set to
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ON off .)
Note
The next example \S-P arameters Measurement" uses the calibration corrections
you just completed. Do not change the calibration settings before doing the
example .
Measurement
Connect the DUT to the test set. Press 4 Scale Ref 5
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AUTO SCALE if the trace needs to be rescaled.
Return Loss and Reection Coecient
The return loss characteristics are displayed in the Log Mag format in Figure 10-9. The
value inside the passband is greater than outside the passband. A large value for return loss
corresponds to a small reected signal just as a large value for insertion loss corresponds to a
small transmitted signal.
Figure 10-9. Return Loss
T o display the same data in terms of reection coecient, press 4
F ormat
5
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MORE
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FORMAT: LIN MAG . This redisplays the existing measurement in a linear magnitude format
that varies from 0=1.00 at the top of the display (100% reection) to 0.00 at the bottom of the
display (perfect match).
Examples of Applications 10-9