Agilent Technologies Agilent 4396B - Manual (Page 100)

1. Press 4 Cal 5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
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
NNNNNNNNNNNNNN
OPEN is underlined when the measurement is
completed.)
3. Connect the SHORT standard to port 1. Then press
NNNNNNNNNNNNNNNNN
SHORT . (The
softkey label
NNNNNNNNNNNNNNNNN
SHORT is underlined when the measurement is
completed.)
4. Connect the LO AD standard to port 1. Then press
NNNNNNNNNNNNNN
LOAD . (The
softkey label
NNNNNNNNNNNNNN
LOAD is underlined when the measurement is
completed.)
5. Press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
DONE:1-PORT CAL . (
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
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 Re
ection Coecient
The return loss characteristics are displayed in the Log Mag format in
Figure 5-13. The value inside the passband is greater than outside
the passband. A large value for return loss corresponds to a small
re
ected signal just as a large value for insertion loss corresponds to a
small transmitted signal.
Figure 5-13. Return Loss
T o display the same data in terms of re
ection coecient, press
4 F ormat 5
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LIN MAG . This redisplays the existing measurement in a linear
5-14 Network Measurement Examples