BNC 2110 keeps outputing 10.9V

[himn]

Hello. I have a BNC 2110 block connected to a photo diode from the dev1/ai0 port.the output of the photo diode itself is varying over a new hundred mV, which is confirmed with an oscilloscope. However, when I connect it to BNC 2110, the output from BNC 2110 is always at 10.9V no matter how the light intensity on photo diode changes ( seen from the output in the test panel from NI MAX sofware). Is there a reason why the output might always be at 10.9 V?

[Oli_Wachno]

You might want to ask your question here : https://forums.ni.com/t5/Multifunction-DAQ/bd-p/250

and provide some more information like the settings you are using..... and how you power the photo diode

[santo_13]

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@himn wrote:

Hello. I have a BNC 2110 block connected to a photo diode from the dev1/ai0 port.the output of the photo diode itself is varying over a new hundred mV, which is confirmed with an oscilloscope. However, when I connect it to BNC 2110, the output from BNC 2110 is always at 10.9V no matter how the light intensity on photo diode changes ( seen from the output in the test panel from NI MAX sofware). Is there a reason why the output might always be at 10.9 V?

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Please share all details on the electrical connection and components involved. You shouldn't be seeing anything above +/-10V at the outputs.