A device configured for use with a plurality of signal paths providing capacitive isolation between devices communicating over the signal paths and comprising: a receiver circuit (118, 144) configured and arranged to receive signal data over a first path (134, 130) of the plurality of signal paths (130, 132, 134); the receiver circuit (118, 144) is configured further to subtract a transient voltage on the third path from the signal received on the first path (134, 130), a transmitter circuit (114, 146) configured and arranged to transmit signal data over a second path (130, 134) of the plurality of signal paths (130, 132, 134); a compensation circuit (120, 150) configured and arranged to, in response to detecting ground transient on a third signal path: generate a compensation signal configured to compensate for ground transient voltage from signal data carried on the third signal path; and transmit the compensation signal over the first path (134, 130) of the plurality of signal paths (130, 132, 134) to compensate for ground transient voltage from signal data carried on the first path, wherein the signal data received on the first signal path (134, 130) and the signal data transmitted on the second signal path (130, 134) are non-differential signals, and a biasing circuit (560, 562) connected to an input of the receiver circuit (118 144), and configured and arranged to bias the input of the receiver circuit (118, 144) at a DC voltage a receiver circuit (118, 144) configured and arranged to receive signal data over a first path (134, 130) of the plurality of signal paths (130, 132, 134); the receiver circuit (118, 144) is configured further to subtract a transient voltage on the third path from the signal received on the first path (134, 130), a transmitter circuit (114, 146) configured and arranged to transmit signal data over a second path (130, 134) of the plurality of signal paths (130, 132, 134); a compensation circuit (120, 150) configured and arranged to, in response to detecting ground transient on a third signal path: generate a compensation signal configured to compensate for ground transient voltage from signal data carried on the third signal path; and transmit the compensation signal over the first path (134, 130) of the plurality of signal paths (130, 132, 134) to compensate for ground transient voltage from signal data carried on the first path, wherein the signal data received on the first signal path (134, 130) and the signal data transmitted on the second signal path (130, 134) are non-differential signals, and a biasing circuit (560, 562) connected to an input of the receiver circuit (118 144), and configured and arranged to bias the input of the receiver circuit (118, 144) at a DC voltage generate a compensation signal configured to compensate for ground transient voltage from signal data carried on the third signal path; and transmit the compensation signal over the first path (134, 130) of the plurality of signal paths (130, 132, 134) to compensate for ground transient voltage from signal data carried on the first path, wherein the signal data received on the first signal path (134, 130) and the signal data transmitted on the second signal path (130, 134) are non-differential signals, and