Device designation | Type of interference observed | Field strength for worst-case failure (V/m) | Modulation (Hz) | Frequency range of failure (MHz) | Device's behavior (Observations from user standpoint) | Notes |
---|---|---|---|---|---|---|
AED2 | False negative | 3 | 1 Hz pulsed (square wave) | 43-46 | Verbal response after analyze mode: "Interference detected" then "No shock advised" | V-Fib applied - No shock advised Interference 8× higher amplitude than normal ECG |
AED2 | False negative | 20 | 1 Hz pulsed (square wave) | 300-322; 366-370, and 900-915 | Buzz was heard in the audio from the device. | V-Fib applied - voice prompts interfered by buzzing sound |
AED2 | False positive | 4 | 3 Hz pulsed (square wave) | 31-34 42-47 | Verbal warning after analyzing heart rhythm: "Shock advised" at 47-49 MHz | NSR applied -"shock advised" RF caused spikes in ECG. Interpreted as fibrillation. Shock canceled at 34 MHz |