Interference detector for patient monitor

A noninvasive monitor configured to communicate with a sensor including an optical radiation source and one or more detectors housed in a sensor housing, the sensor housing configured to position the optical radiation source and the one or more detectors proximate tissue of a patient, the noninvasive monitor comprising:

• an input configured to receive from the sensor first sensor signals responsive to detected light from the optical radiation source attenuated by the tissue and second sensor signals responsive to detected ambient electronic interference proximate the sensor;
• and
• a hardware processor configured to:
• process the first sensor signals to determine a first measurement value for a first physiological parameter of the patient and a second measurement value for a second physiological parameter of the patient without using the second sensor signals to determine the first measurement value and the second measurement value, the first physiological parameter being different from the second physiological parameter, the first physiological parameter corresponding to a first threshold and the second physiological parameter corresponding to a second threshold different from the first threshold,
• process the second sensor signals differently from the first sensor signals to determine a first level of ambient electronic interference proximate the sensor and a second level of ambient electronic interference proximate the sensor,
• determine at least one of a first audio or visual indication from a comparison of the first level of ambient electronic interference to the first threshold, the at least one of the first audio or visual indication indicating a suitability of a testing environment for patient monitoring for the first physiological parameter and indicating a degree to which relocating the sensor could reduce ambient electronic interference proximate the sensor,
• determine at least one of a second audio or visual indication from a comparison of the second level of ambient electronic interference to the second threshold, the at least one of the second audio or visual indication indicating a suitability of the testing environment for patient monitoring for the second physiological parameter and indicating a degree to which relocating the sensor could reduce ambient electronic interference proximate the sensor,
• output the at least one of the first audio or visual indication for presentation prior to outputting the first measurement value for presentation, and
• output the at least one of the second audio or visual indication for presentation prior to outputting the second measurement value for presentation.