Tettex MIDAS 2881, Operating Instructions Manual

Page: 33 / 164

Functional Description 23
5.4 Interference Suppression
The presence of power line frequency fields induce spurious voltages and currents (interference
inductions) onto the test object and therefore cause an error on the measuring signal. These
interferences make accurate measurement more difficult. The Midas 2881 uses therefore special filter
algorithms to reduce the noise and extract the measuring signal.
These algorithms has to be selected whenever readings are not stable, or high armonics content can
be detected in the measuring signals. The selection is done by the user, selecting “Test Frequency
Detection” located in the settings menu.
The desired measuring frequency has to be introduced in the “Detect Frequency” text box.
The measurement will take a little bit longer when these algorithms are applied, please be patient and
do not release the handheld before the measurement is complete