HP 8712C User Manual

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Making Measurements
Measuring Impedance Using the Smith Chart
Constant
A
Reactance
-jl O
cap?tive
-j25
-jlOO
\
System
-j50
ltipedance
po645b-c
Figure 3-23. Interpreting the Smith Chart
d. The magnitude, and phase of the reflection coefficient, p, can be
determined by reading the Smith chart as follows:
IpI = the distance from the measurement point to the center point on
the chart. See Figure 3-24.
3-59
L p = 0 = the angle between the horizontal axis of the Smith chart
and a line from the center point to the measurement point.
See Figure 3-24.
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HP 8712C Specifications

General

Brand	HP
Model	8712C
Category	Measuring Instruments
Language	English