Chapter 4 205
Calibration
Specifying Different Standard for Each Frequency
4. Calibration
Notes on how frequency ranges are dealt when using subclasses
By using several subclasses, you can set a different standard for each frequency, but note
the following on frequency ranges. The following table shows possible cases and whether
calibration is possible.
Table 4-7 Possible cases of frequency ranges and whether calibration is possible
Possible cases of frequency ranges Execution of
calibration
Example 4-1, “When frequency ranges specified with subclasses
overlap,”
Possible
Example 4-2, “When frequency ranges specified with subclasses
do not cover a part of a measurement frequency range,”
Impossible
Example 4-3, “When a frequency range specified with a subclass
lies outside the measurement frequency range,”
Possible
Example 4-4, “When a part of a frequency range specified with a
subclass lies outside the measurement frequency range,”
Possible
Example 4-1 When frequency ranges specified with subclasses overlap
For the measurement frequency range (1 GHz - 8 GHz), if you execute calibration with a
standard of subclass 1 (1 GHz-5 GHz) and then with a standard of subclass 2 (4 GHz-8
GHz), the standard last executed is applied for the overlapping portion (4 GHz-5 GHz).
Figure 4-57 When frequency ranges overlap
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