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STHV800 rx amplitude problem
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2017-11-06 04:47 AM
Posted on November 06, 2017 at 13:47
Hello Communnity
I use the eval board STEVAL-IME013V1
Input frequency 40kHzTransmission of a sin 40kHz signal from XDCR8 to LVOUT8 1:1When the piezoelectric element UTR-1440K is switched on to the XDCR8 connector, the level of the received signal ~ 5mVWhen the UTR-1440K piezoelectric element is switched off from the XDCR8 connector, the level of the received 30mVWhen the piezoelectric element MA40E8 is switched on to the XDCR8 connector, the level of the received signal ~ 10mVWhen the MA40E8 piezoelectric cell is switched off from the XDCR8 connector, the level of the received signal 70 mVQuestion: why the large attenuation of the received signal with switched on piezoelement?Piezoelement switched on directly to smb
All datasets and oscillograms in the attachment
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