Abstract: An electronic apparatus of a bio-signal measurement system comprises a first electric connector arrangement that is repeatedly connectable with and releasable from a first electric counter-connector arrangement of the bio-signal data processing apparatus. The electronic apparatus comprises also a second electric connector arrangement that is connectable with a second electric counter-connector arrangement of the bio-signal electrode arrangement in a releasable manner, and a battery that provides electric power for operation of the bio-signal data processing apparatus in response to an electric connection through the first electric connector arrangement between the electronic apparatus and the bio-signal data processing apparatus. The first electric connector arrangement comprises separate electric connectors, each of the connectors with a plurality of pins, the pins of the at least two separate electric connectors being for electric power supply and data transfer.

Abstract: A holder apparatus of a bio-signal device comprises a holder, which comprises a pocket for a bio-signal processing device, an extension with a hollow, the hollow and the pocket forming a continuous cavity through the holder, a connector, and an elastic seal with a hole. A shape of the elastic seal is matched with a shape of the hollow of the extension at an interface of the pocket, and the hollow and a shape of the hole is matched with a shape of the connector for sealing an interface between the connector and the holder while the connector and the elastic seal are within the hollow and the connector is in contact with the elastic seal. Sealant filler fills the hollow of the extension and is in physical contact with the connector, which is in the hollow against the seal, the elastic seal and the sealant filler allowing the connector to mate electrically with a counter-connector moved within the cavity in a direction from the pocket toward the hollow.

Abstract: A holder apparatus of a bio-signal device comprises a holder, which comprises a pocket for a bio-signal processing device, an extension with a hollow, the hollow and the pocket forming a continuous cavity through the holder, a connector, and an elastic seal with a hole. A shape of the elastic seal is matched with a shape of the hollow of the extension at an interface of the pocket, and the hollow and a shape of the hole is matched with a shape of the connector for sealing an interface between the connector and the holder while the connector and the elastic seal are within the hollow and the connector is in contact with the elastic seal. Sealant filler fills the hollow of the extension and is in physical contact with the connector, which is in the hollow against the seal, the elastic seal and the sealant filler allowing the connector to mate electrically with a counter-connector moved within the cavity in a direction from the pocket toward the hollow.