ES User’s Guide 3-41
Making Measurements
Measuring S21 Forward Transmission using an Enhanced Response Calibration
Measuring S
21
Forward
Transmission using an Enhanced
Response Calibration
This section uses an example measurement to describe how to calibrate
for and make an S
21
measurement. The same general concepts apply for
an S
12
measurement. This example uses an enhanced response
calibration, but other calibration choices are also available. For example,
a two-port calibration, explained earlier in this chapter, could be used for
this measurement. Although the two-port calibration is the most
accurate form of error correction, it results in a slower measurement
speed than when using other calibrations. See the table below for a list of
all possible calibration choices for S
21
or S
12
measurements.
TIP An optimum calibration is critical for achieving best measurement
accuracy. Refer to Chapter 6, “Calibrating for Increased Measurement
Accuracy,” for detailed information about all of the various aspects of
calibration.
Table 3-3 Calibration Choices for S
21
and S
12
Measurements
In this example, an insertable bandpass filter like the one that was
supplied with your network analyzer is used.
Measurement Type Calibration Choices
S
21
Fwd Trans or
S
12
Rev Trans
Default Response
Default 2-Port
User Response:
Response
Response & Isolation
Enhanced Response
User 2-Port
Normalize
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