If a BioNomadix wireless physiology signal displays dropout/flatline on both channels, radio interference is disrupting transmission.
Locating Receiver or Logger closer to the Transmitter
Charge the transmitter, eliminating interference from body or wall between transmitter and receiver
Making sure electrodes are fully adhered and leads are not pulling
Switching recording channels (both X,Y, and various channels between 1-16)
Recording via channel A or channel B
Eliminating alternate sources of electrical noise (i.e., cell phones)
Elevate the MP150 and receiver higher in the room
Maintaining line of sight to the Receiver/Logger; subject may inadvertently be blocking line of sight when they move (i.e., scrunch their head to their shoulder). If there’s enough length in the leads, mount transmitter on the shoulder or upper arm to let more of the radio energy escape the Transmitter.
If the recording environment is near a military base, it’s possible that military-grade RF equipment is interfering; a spectral scan would be required to confirm that and then frequencies could be positioned at quiet points (via BIOPAC Support Request; Current shipping Firmware can’t be used to change to fixed frequencies).
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