Patent ID: 8391975

Claim:
A method comprising: selecting a first sensing electrode configuration that includes at least one electrode operatively disposed along a first heart chamber; selecting a second sensing electrode configuration that includes at least one electrode operatively disposed along a second heart chamber; setting a first sensing window corresponding to cardiac electrical events occurring in the second heart chamber; setting a second sensing window corresponding to cardiac electrical events occurring in the first heart chamber; enabling a first sense amplifier coupled to the first sensing electrode configuration; enabling a second sense amplifier coupled to the second sensing electrode configuration; sensing a first signal corresponding to cardiac electrical events occurring in the second heart chamber during the first sensing window using the first sensing electrode configuration, wherein a signal-to-noise ratio of the first sense amplifier is adjusted to preclude sensing of the second signal and a signal-to-noise ratio of the second sense amplifier is adjusted to preclude sensing of the first signal; sensing a second signal corresponding to cardiac electrical events occurring in the first heart chamber during the second sensing window using the second sensing electrode configuration; transmitting the first signal and the second signal from an implantable medical device to an external monitor during a telemetry session; receiving, with the external monitor, the first signal and the second signal from the implantable medical device during the telemetry session; separately adjusting, at the external monitor, a gain of each of the respective first signal and the second signal received from the implantable medical device; merging the adjusted first signal and the second signal into a single merged signal; and displaying the single merged signal on a display of the external monitor to provide an ECG signal.