AC coupling

User Question

Posted on 04.06.2015 09:14

Can you clarify the high-pass frequency characteristics of the AC coupling circuit (is cut-off at 1Hz, 3 Hz, or 10 Hz), and how is it defined (+/- 3dB?)

DEWESoft Support
Technical support
Posted on 04.06.2015 09:17

Hi,

the filer cutoff is defined as the-3 dB point. So with 10 Hz high pass the 10 hz signal will be cut by sqrt(2).

The lowest one (1 Hz) is the hardware filter and the higher ones are software filters on top of the hardware ones.

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