Low-Frequency Filter - UNI-T UT8806E User Manual

User's Manual UT8806E Desktop Digital Multimeter

Low-frequency Filter

The low-frequency filter is applicable to ACV, ACI measurements. The low-frequency filter will
optimize the low-frequency accuracy and minimize the AC stabilization time. The UT8806E
multimeter provides three kinds of low-frequency filters, >3Hz, >20Hz and >200Hz.
During the measurement, the user should select the AC filter according to the frequency of
the input signal. Normally, the user should select the highest frequency filter whose
frequency is less than the frequency of the measurement signal.
For example, when measuring signals in the 20Hz to 200Hz range, use a 20Hz filter. When
measurement speed is not a major consideration, choosing a lower frequency filter for
acquiring more stable measurement results, it depending on the signal to be measured.
During ACV, ACI measurements, selecting [Filter] in the menu, as shown in Figure 2-6 (taking
ACV measurement as an example). Press the menu key to realize the configuration.
Figure 0–6 Low-frequency Filter Setting
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