Short-Open-Load-Thru Method

To implement the Short-Open-Load-Thru method (SOLT), select Tools > Calibration Wizard to open the wizard window. Then select "Short-Open-Load-Thru" on the Type drop-down menu. The "Short-Open-Load-Thru" calibration method removes the effect of the probe discontinuities from a device under test and does not assume the port 1 and port 2 are equal.

The required input is:

1. One Touchstone file (*.s2p) of a thru-line of any length.
2. Three Touchstone files for each port corresponding to each measurement configuration: shorted, open and loaded. Each file can either be a single-ended (*.s1p) or a combined measurement (*.s2p) file. When a *.s2p file is specified, Port 1 uses the S11 values and Port2 uses the S22 values:

• For a short or matched measurement, the surplus inductance needs to be specified.
• For an open circuit reflection, the excess capacitance needs to be specified.
• If no value is given, an ideal reflect is assumed.

3. A Touchstone file (*.s2p) of the chosen device under test with fixture effects.

The output is:

• Touchstone files for the fixtures corresponding to Port1 and Port2.
• A Touchstone file of the device under test with effect of the fixtures removed.
• If "Export Zo" is selected, the frequency dependent Zo of the calibration lines are written to the designated file.