AnthonyP Posted January 12, 2022 Share Posted January 12, 2022 Hi Digilent : I am facing the difficulty to using AD2 , let along it reconnect frequently the time. I tried to have a loop back test to ensure it works properly or not . what I test as below : (ALL in AD2 as selftest ) 1. Wavegen toi generate 20KHz clock 2.measure from its scope , it shows correct 3.Beasure it from logic interface, ensure it is the logic function is in RUN status , but I can not see AD2 digital interface capture the clock . I tried each "mode" like repeated,screen,record.... and set trigger type on the digital input pin like D01 . attach the set up . Please help ! Anthony Link to comment Share on other sites More sharing options...
0 attila Posted January 12, 2022 Share Posted January 12, 2022 Hi @AnthonyP The logic threshold of digital inputs is at about 1.5V but the generated signal does not cross this level. Generate signal with 1.5V offset. In the 5th and 7th AD2 configuration the digital input threshold is at 0.5V. Link to comment Share on other sites More sharing options...
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AnthonyP
Hi Digilent :
I am facing the difficulty to using AD2 , let along it reconnect frequently the time.
I tried to have a loop back test to ensure it works properly or not .
what I test as below : (ALL in AD2 as selftest )
1. Wavegen toi generate 20KHz clock
2.measure from its scope , it shows correct
3.Beasure it from logic interface, ensure it is the logic function is in RUN status , but I can not see AD2 digital interface capture the clock .
I tried each "mode" like repeated,screen,record.... and set trigger type on the digital input pin like D01 .
attach the set up .
Please help ! Anthony
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