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ADS1298 Respiration test signal

Ian McCullough
Prodigy 10 points
Other Parts Discussed in Thread: ADS1298R

Hi all,

I am currently trying to work with the ADS1298R evaluation module. I am very new to this, but I couldn't find an answer to my question in the community so far.  

The ADS1298RECG-FE EVM is in its default jumper configuration for the internal test signal and I didn't add anything to the circuitry. However, I am not able to see a respiration signal. I also use a Rigel 333 patient simulator to simulate a three lead signal and respiration the ECG signal looks fine, but I have problems to see any respiration signal at all even though I changed the jumper configuration of JP35/34 as described in the manual. Did I understand correctly that the on-board respiration circuitry should simulate a test-signal without any external output? And how will I be able to see the signal of the Rigel simulator?


I would be very grateful for any comments or tips, I'm starting to become a little bit desperate here. :)
Thank you very much in advance!

Clara  

  • 0
    TI__Guru 57336 points

    Hi Clara, 

    Thanks for your interest in ADS1298R! Did you get the Respiration feature working?

    To use the patient simulator, the RA and LA electrodes are connected to pins 9 and 10, respectively, on the DB15 connector. JP34 and JP35 should be configured as [2-3] to connect these signals to the Respiration signal path. Alternatively, you can change these jumpers to [1-2] and use the on-board "simulated respiration" signal (the User's Guide explains how this is generated).

    Once you have the EVM hardware setup, you will have to set the appropriate Respiration registers in the GUI. This includes enabling the modulation and demodulation signals, choosing the modulation frequency and the phase delay. Please refer to Section 5 of the User's Guide for further explanation and examples.

    Let us know if you have any more questions!

    Best Regards,