TDC1000-GASEVM: EVM test problems

Sherry Liang

Part Number: TDC1000-GASEVM

Hi team,

During the TDC1000-GASEVM test, when set to HV, there are signals on U2-pin5 and U3-pin5 on the green board, but there is no signal after the connected resistors R12 and R22. Why? In this case, RX will also have a pulse output about 3V. Is this normal?

Thanks a lot!

Sherry

over 6 years ago

0 Bharat Aravamudhan over 6 years ago

TI__Genius 11015 points

Sherry,

i will check on this and get back with you early next week.

0 Sherry Liang over 6 years ago in reply to Bharat Aravamudhan

TI__Genius 10255 points

Hi Bharat,

Thank you very much!
Looking forward to your reply!

Sherry

0 Bharat Aravamudhan over 6 years ago

TI__Genius 11015 points

Sherry,

In case you have setup the EVM & GUI in the HV mode, then you should see a pulse of 30V at the R12 & R22. This is the voltage that should drive your transducer.
The Rx will have a small signal which reaches the Rx pin.

0 Sherry Liang over 6 years ago in reply to Bharat Aravamudhan

TI__Genius 10255 points

Hi Bharat,

Thanks for your reply!

Best regards,

Sherry

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TDC1000-GASEVM: EVM test problems