Let us assume both that our system is already calibrated and that we
have equalized the system for the test port in use. We would then
1. Connect the Short: A Short always appears as a dot at the left-most
edge of the Smith chart’s horizontal axis.
2. Connect a Termination: Now you will see another dot located at the
center (1+j0) of the chart (this assumes a 50-ohm load).
3. Connect the Open: An Open appears as an arc on the chart’s right
edge. This is due to the fringing capacitance of the Open standard
(Figure 8-6).

37xxxE OM 8-9

MEASUREMENTS TRANSMISSION AND REFLECTION
SMIT H CHART
SHORT OPEN
ARC
TERMINATION
Figure 8-6. Smith Chart Display 2