Omicron Lab Bode 100 - Shunt-Thru with series resistance

Typical applications
A typical application for the Shunt-Thru measurement mode is the ESR measurement of ultra-low ESR
decoupling caps.
8.4.4 Shunt-Thru with series resistance
Shunt-Thru with series resistance is very similar to the normal Shunt-Thru measurement mode. For
more details regarding the normal Shunt-Thru measurement mode, please see 8.2.3 Shunt-Thru on
page 66.
Measurement information
Bode 100 measures S21 gain and calculates impedance Z using the equation:
Compared to the normal Shunt-Thru measurement mode, the series resistors increase the maximum
measurable impedance. This is of advantage when one needs to measure from roughly 10 mΩ to
some kΩs.
The higher the series Resistors Rs are chosen, the higher the maximum recommended impedance is.
However, at the same time the lower impedance limit rises.
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OMICRON Lab