Measuring Impedance Magnitude - HP 8712C User Manual

Measuring Impedance Magnitude

The impedance (Z) of a DUT can be calculated from the measured reflection
or transmission coefficient. The impedance magnitude format allows
measurement of impedance versus frequency or power. This measurement
can be useful for many types of devices, including resonators and discrete
passive components.
The analyzer measures the reflection or transmission response of the DUT,
converts it to the equivalent complex impedance, and displays the magnitude.
Two simple conversions are available, depending on the measurement
configuration.
The impedance measurement is highly dependent on the reflection coefficient,
making it important to perform a good calibration. The accuracy of the
impedance measurement is best near the analyzer's system impedance
(50 or 75 ohms). The resolution is limited (by internal math calculations) to
approximately 5 to 10 milliohms.
lb use the impedance magnitude format, press (m) More Format
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