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TDC1000-TDC7200EVM: Wrong DelTOF values

Part Number: TDC1000-TDC7200EVM

Hello,

Attached is the zero flow test data which is carried out for over 2 hours. Each reading is taken at 100ms. I was getting an average zero flow reading around 4 ns but this used to shoot upto directly -997 ns and 997 ns and staying there for long time. I think the previously measured STOP signals are being used to measure TOF as upstream and downstream have a 1ms difference between them. Why does this happen sometimes? How can I avoid this behaviour?

  • Hello Prudhvi,

    Is this being done with the TDC1000-TDC7200EVM GUI? At times the USB communication can cause issues with the readings. Can you please try to decrease the frequency of the measurements? Try reading every 300ms or more and see if the problem continues.

    Regards,