RLD connection status

For ECGP and ECGN in any channel there is lead status available showing whether electrode is in contact with skin or not.
In a similar way it it possible to know whether the RLD/Bias sensor is connected to my body or not?
If it is possible how to do so?


  • wjcroftwjcroft Mount Shasta, CA

    If Bias is disconnected you may see higher mains noise levels. And the 'lead-off' indications may not function. For all technical questions suggest you consult the datasheet for the ADS1299.


  • wjcroftwjcroft Mount Shasta, CA
    edited July 9

    Note that 'lead-off' detection (hardware feature, 'AC-lead-off') in the ADS1299, is essentially the same as the method used to determine per channel impedance values. A small current is injected. Normally this feature is turned off with the Cyton firmware, it is only on during impedance checks. See the data sheet.

  • wjcroftwjcroft Mount Shasta, CA

    See page 32 of the data sheet regarding Bias-off detection. This power-up feature is not currently implemented in the Cyton firmware.

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