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Abhiranjini B A

hello,

i'm able to collect ECG data of all channel (except channel1) from the code which i have written. Data is collected through SPI protocol. The channel 2 and 3 is giving a proper ECG data but Channel4 to 8 is not looking like ECG. please guide me on how can i get a proper ECG on all channel. please find the attachment of the channel3 ,4 and 5 data plotted on excel sheet.

thank you,

Abhiranjini

over 4 years ago

0 Alexander Smith over 4 years ago

TI__Mastermind 47595 points

Hi Abhiranjini,

Can you provide any additional information such as register settings or a schematic?

Why are not able to collect data from channel 1?

Can you provide pictures of the layout?

More than likely the RLD must be used in order to cancel out the common-mode noise.

This post may help: https://e2e.ti.com/support/data-converters/f/73/p/812233/3007929#3007929

As well as this app note: http://www.ti.com/lit/an/sbaa188/sbaa188.pdf

0 Abhiranjini B A over 4 years ago in reply to Alexander Smith

Prodigy 240 points

hello,

these are the register setting done.

thank you.

0 Abhiranjini B A over 4 years ago in reply to Abhiranjini B A

Prodigy 240 points

hello,

please find the attachment of channel 1 data plotted in excel.

thank you

0 Alexander Smith over 4 years ago in reply to Abhiranjini B A

TI__Mastermind 47595 points

Hi Abhiranjini,

From the provided picture, I don't know what register's are being written to except for the ones with comments. Can you post the register settings in a way that I can clearly interpret them?

Can you provide the other things I asked for?

Can you correctly read a known signal clearly such as a sine wave from a signal generator?

Why are you turning off all channels except for 1?

For now, I recommend turning off all extra features such as lead-off.

0 Abhiranjini B A over 4 years ago in reply to Alexander Smith

Prodigy 240 points

hello,

right now im working on respiration. i could get the output in GUI and i want to see the same on oscilloscope so can u please tell me from where i should take the output pin.

thank you.

0 Alexander Smith over 4 years ago in reply to Abhiranjini B A

TI__Mastermind 47595 points

Hi Abhiranjini,

This is not available. Please see the Pin Function: NFBGA Package section of the datasheet for reference.

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