8.3 Performing an Impedance Calibration
Impedance calibration (also called Open/Short/Load calibration or OSL calibration) can be used to
compensate the parasitics of a measurement setup such as an external directional coupler or a
measurement bridge. Furthermore it can be used to shift the reference plane of a one-port reflection
measurement from the
Bode 100
output port to the end of a cable of arbitrary length. This is achieved
by measuring known Open, Short and Load elements.
To achieve maximum accuracy,
do not change
the attenuators
after
having performed an
external calibration.
Performing a Open/Short/Load calibration
In order to perform an Open/Short/Load calibration please proceed as follows:
1. Build up the calibration setup. For details on the correct calibration setup, please check the
following chapters.
2. In the
Bode Analyzer Suite
, click on an Impedance calibration icon (either User-Range or Full-
Range). To learn more about the difference between Full-Range and User-Range calibration
please see
8.3.1 Difference between Full-Range and User-Range calibration
3. In the calibration dialog, the calibration state shows
Not Performed
for all three calibration points.
Connect the Open calibrator and press
Start
.
Wait until the Open calibration has completed and the calibration state shows
Performed
.
4. Connect the Short calibrator and press Start.
5. Connect the Load calibrator and press Start.
Calibration
OMICRON Lab
75
Summary of Contents for Bode 100
Page 1: ...Smart Measurement Solutions Bode 100 User Manual...
Page 24: ...Figure 6 3 Collapsing the measurement and trace configuration areas 24 OMICRON Lab...
Page 45: ...Figure 7 3 Context menu of chart Measurement types and applications OMICRON Lab 45...
Page 83: ...Open B WIC Open B SMC Short B WIC Short B SMC Load B WIC Load B SMC Calibration OMICRON Lab 83...