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I`m using the THDB-ADA_HSMC-Card with a DE2-115 Board.
I`m able to measure an output voltage of the DAC of -1V and 1V while toggling the values of the ADC from 0 to (2^14)-1, and using the 1MOhm impedance-input of the oszilloscope. When I use the 50Ohm impedance-input, I´m able to measure -300mV and 300mV. But - the shown rectangle-signal on the oszilloscope looks a lot better, than using the 1MOhm input. Which output impedance does the Daughter-Card have and which voltages should I be able to measure ?Link Copied
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