Dataman 520 Series - Manual (Page 76)

DATAMAN oscilloscope
User’s Guide
Fig. 6.9.2.1. – Complex filter window
The filter graph is displayed in the left part of the window. Cut frequencies are
marked by a cross or square. The software composes a real filter from RC filters with
specified cut frequencies. The real filter is displayed in green.
Cut frequency marked by a cross has its level fixed. Other frequencies‘ levels (marked
by square) are calculated from a fixed frequency level.
Click the cross or square to select the cut frequency. The selected cut frequency is
displayed in red.
The selected frequency controls are located on the right of the window.
Fig. 6.9.2.2. – Selected frequency controls
Click the „left“ combobox to change the filter steepness below the selected frequency,
click the „right“ combobox to change the filter steepness above the selected
frequency.
It is possible to set attenuation at a specified frequency in the „level“ edit box. The
frequency’s level becomes fixed after this operation.
Frequencies controls are located in the bottom left corner of the window.
Fig. 6.9.2.3. – Frequencies controls
Click the „Remove freq“ button to delete the selected frequency.
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