user manual

32 Chapter 3
Test Set Cal and SelfCal
Test Set Cal: An Overview
Test Set Cal: An Overview
To perform a Test Set Cal the following steps are required and are explained in
detail in this section:
1. Set up measurement parameters, such as frequency range, power level, number
of measurements points, etc.
2. Determine the best position for the calibration reference plane.
3. Determine the type of calibration kit you will need to match the connectors at
your calibration reference plane.
4. Determine the number of test set ports to be used.
5. Perform the Test Set Cal.
The following optional steps are also explained in detail in this section:
6. Save the Test Set Cal.
7. Recall the Test Set Cal.
8. Copy the Test Set Cal.
9. Execute the SelfCal.
Setting Up the Measurement Parameters
You will need to determine the measurement parameters for your Test Set Cal by
determining all the measurements you will be making on a particular device and
setting your parameters accordingly. The analyzer will be able to accurately
interpolate between error-correction data points when most parameters are changed.
However, some special considerations are discussed below.
Frequency Range
You should set your frequency range to the narrowest span possible that will cover
all of the measurements you will be making. The analyzer uses a fixed number of
frequency points during a calibration and interpolates as the frequency span is
narrowed. Setting the analyzer to the narrowest span possible for your
measurements will ensure the most accurate calibration. For example, if you will be
measuring a device that requires three different measurements, set your start
frequency to the lowest frequency used among the measurements and your stop
frequency to the highest frequency used among the measurements. See Figure 3-1.