11 0 Chapter 4
Calibration
THRU Response Calibration (transmission test)
THRU Response Calibration (transmission test)
In THRU response calibration, calibration data are measured by connecting a THRU
standard to the desired test port. This calibration effectively eliminates the frequency
response transmission tracking error from the test setup in a transmission test using that
port (
Figure 4-7). It is also possible to carry out an isolation calibration using a LOAD
standard in the process of THRU response calibration. An isolation calibration will
eliminate isolation error (crosstalk error) from the test setup in a transmission test using
that port.
Figure 4-7 2-Port error model (THRU response)
Figure 4-8 2-Port Error model (THRU response + isolation)
Procedure
Step 1. Press or to select the channel for which you want to perform the
calibration.
Step 2. Press .
Step 3. Press Calibrate.
Step 4. Press Response (Thru).
Step 5. Press Select Ports.
Step 6. Select the test ports (and corresponding S parameters) upon which a THRU response
calibration is to be performed.
Softkey Function
2-1 (S21) Selects test port 2 (input) and test port 1 (output); Corresponds to the
determination of S21
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