TDC1000-TDC7200EVM: TOF value

Tai Young Yun

Prodigy 20 points

Part Number: TDC1000-TDC7200EVM
Other Parts Discussed in Thread: TDC1000, TDC7200

Hello

I'm planning to make ultrasonic flow meter based on TDC1000 TDC7200 EVM board.

and I'm trying to test with EVM Board now. but the value of TOF was hopped like pic.

I'm using 1MHz transducer, Model name is "TS-2".

Is there any other options that I have to set?.

below pic is setting of my EVM Board

Regards,

Yun

over 7 years ago

0 Scott Cummins over 7 years ago

TI__Mastermind 31655 points

Hi Yun,

To start with, please try configuring all the settings one at a time as described in the TDC1000 FAQ here: e2e.ti.com/.../3611.everything-you-need-to-know-for-ultrasonic-tof-liquid-coupled-collateral-tools-designs-faq

Also, are you certain that these transducers operate at 1Mhz? I cannot find any documentation that confirms this. You may need to experiment to find the resonant frequency of the transducers.

Regards,

0 Tai Young Yun over 7 years ago in reply to Scott Cummins

Prodigy 20 points

Hi Scott,

You can find spec. of transducer by this keyword "TTS100-TS2-NG-05"
but, some documents describes this transducer frequency 1Mhz, and some documents 1.5Mhz
so, i'd like to test at 1.5Mhz.
how can i make it that frequency? should i use ext clock?

Regards,

Yun

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TDC1000-TDC7200EVM: TOF value