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TDC1000-TDC7200EVM: Ringdown effect

Part Number: TDC1000-TDC7200EVM

Hi everyone,

I'm using a TDC1000-TDC7200EVM board in order to evaluate the distance between two transducers (one as trasmitter and the other as receiver). I have connected the transmitter to channel 2 and the receiver to channel 1. I have also select channel 2 for trasmission (CH_SEL=CH2 (TX2)) and channel 1 for receiving (Mode 1). I correctly stimulate the transmitter and it shows the ringdown effect. I don't understand why the ringing affect the minimum measurable distance even if the receiver channel is the one connected to the other transducer. I'm using short TOF mode because i have to measure short distances and i have to wait until the ringing has stopped in order to have good measures. Could someone explain me why the ringodwn effect still influences the measurement even if the receiver channel is the one not connected to the ringing transducer? Thank you very much

Regards,

Luigi