• State TI Thinks Resolved
  • Locked Locked
  • Replies 6 replies
  • Answers 2 answers
  • Subscribers 47 subscribers
  • Views 1690 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

ADS1293EVM: ADS1293 GUI Stop and get wrong waveform

Kami Huang60
Genius 3830 points

Part Number: ADS1293EVM

Dear Sir/Ms.

I get 2 question from my customer.

There are 2 questions need help.

 

1. they can not get correct ECG data under 3 lead configuration

 

they connect the probes to my LA, RA, LL, RL as below

 

And theyhave checked probes pin connection with EVM, it seems to be correct.

Is there anything we miss?

 

 

 

 

2. SW error after stopping record ECG data

 

After entering the cancel button of the dialog 

 

Customer get difference waveform with user guide. There seems a lot of noise even connect ECG sensor to someone's body.

BTW, customer get same noise waveform when JP2 and JP3 short.

Did they do something wrong?

  • 0
    Genius 3830 points
    Dear Sir/Ms.
    We solve the issue "PC disconnect to ADS1293EVM". Due We change a PC to an old NB with Windows XP OS.
    Currently, I on side support my customer and ADS1293EVM seems got a lot of noise.
    The waveform showing following hyerlink.
    www.youtube.com/watch
  • 0 in reply to Kami Huang60
    Genius 3830 points

    Here is the 3Lead Resistor setting dump. Would you please help me to fine is there some thing wrong?

    address,value

    0x00,0x00

    0x01,0x11

    0x02,0x19

    0x03,0x00

    0x04,0x00

    0x05,0x00

    0x06,0x00

    0x07,0x0f

    0x08,0xff

    0x09,0x00

    0x0a,0x07

    0x0b,0x00

    0x0c,0x04

    0x0d,0x00

    0x0e,0x00

    0x0f,0x00

    0x10,0x00

    0x11,0x00

    0x12,0x04

    0x13,0x00

    0x14,0x00

    0x15,0x00

    0x16,0x00

    0x17,0x05

    0x18,0x00

    0x19,0x00

    0x1a,0x00

    0x1b,0x00

    0x1c,0x00

    0x1d,0x00

    0x21,0x02

    0x22,0x02

    0x23,0x02

    0x24,0x02

    0x25,0x00

    0x26,0x00

    0x27,0x08

    0x28,0x00

    0x29,0x00

    0x2a,0x00

    0x2b,0x00

    0x2c,0x00

    0x2d,0x00

    0x2e,0x33

    0x2f,0x30

    0x30,0x00

    0x31,0x00

    0x32,0x00

    0x33,0x00

    0x34,0x00

    0x35,0x00

    0x36,0x00

    0x37,0x00

    0x38,0x00

    0x39,0x00

    0x3a,0x00

    0x3b,0x00

    0x3c,0x00

    0x3d,0x00

    0x3e,0x00

    0x3f,0x00

    0x40,0xff

    0x50,0x00

    0x60,0x00

    0x62,0x00

    ADS1293EVM 3Lead setting is different with  datasheet. What will be happend if don't disable not used channels?

  • 0 in reply to Kami Huang60
    TI__Guru 68936 points
    Hi Kami,

    Thank you for your post. Please excuse our delay.

    Were you able to solve the issue?

    Before evaluating the EVM with human ECG inputs, I would suggest using a function generator with a 100mVp sine wave with a mid-supply offset as a known test signal. Tie the negative channel input to mid-supply also and verify that you can measure the sine wave cleanly at the ADC output. Remember to share the ground connection with the function generator and the EVM.

    Best Regards,
  • 0 in reply to Ryan Andrews
    Genius 3830 points
    Hello Ryan,
    Function Gen was ok but human body seem not good. BTW, don't need connect function Gen's ground with EVM's.
    www.youtube.com/watch
  • 0 in reply to Ryan Andrews
    Genius 3830 points

    My customer use PAD and wire to his body.  2 PAD on left shoulder and right shoulder and the other 2 pad on Left kidney and right kidney.  Did they paste on right place?

  • 0 in reply to Kami Huang60
    TI__Guru 68936 points

    Hello Kami,

    Sorry, but we are not the medical experts and cannot answer that question. Electrode placement is completely up to the end user depending on what they are trying to measure.

    Best Regards,