10 Calibration / Correction
This section explains how to compensate unwanted effects of the measurement setup and how to
improve the accuracy of your measurement results. Bode 100 offers the following possibilities to
calibrate a test setup or the device itself:
Factory calibration / adjustment
Bode 100 can be adjusted / re-calibrated at OMICRON. For details regarding this factory calibration,
please contact the OMICRON Lab support or your local OMICRON Lab contact.
Internal device calibration
In addition to the external software calibration Bode 100 features an internal device calibration that
compensates the device-internal signal path drift by performing internal measurements.
External calibration / correction
External calibration can be used to compensate e.g. the frequency response of probes, cables or the
test setup. Depending on the used measurement mode Bode 100 offers Gain calibration as well as
Impedance calibration.
Hint: To achieve maximum accuracy, do not change the attenuators after having performed
an external calibration.
10.1 Internal device calibration
Internal device calibration is required by the system and is automatically performed at the first use of a
Bode 100 on a computer. Bode 100 performs an internal path compensation based on stable
reference elements in the device. The correction data is evaluated and stored on the PC for future
measurements. In the Bode Analyzer Suite the date of the last internal device calibration is shown in
the status bar .
It is recommended to re-perform the internal device calibration on a regular basis to improve
measurement accuracy especially when no external calibration is performed. Furthermore it
is necessary to start a new internal device calibration whenever the environmental
conditions, such as temperature, change.
Manually starting a new internal device calibration
To perform a new internal device calibration, move the mouse over the calibration indicator in the
status bar . A pop-up with a button appears:
Press the button Click here to perform a new internal device calibration and the device will start a
new internal calibration. The calibration takes roughly 1 min. During the calibration you cannot perform
any measurements with Bode 100.
Calibration / Correction
OMICRON Lab
85
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