A catheter system configured for electrode selection and signal analysis, the system comprising: a cardiac mapping catheter, the catheter including an electrode array comprising multiple electrodes (A1-H2, A2-H2), a catheter shaft and a handle; processing equipment in electrical communication with the electrode array, wherein each electrode is separately connected to insulated conductors extending proximally through the catheter shaft to terminals of a cable connector in or on the handle that is connected via a cable to the processing equipment, wherein the electrodes of the electrode array, when accordingly configured by the processing equipment, include least three bipolar electrode pairs (A1 - H1, A2-H2), each bipolar electrode pair including a first electrode (A1-H1) and a second electrode (A2-H2) at a distance from and in electrical communication with one another, the electrodes of the at least three bipolar electrode pairs (A1-H1, A2-H2) together defining a perimeter around an area, the first and second electrodes of each bipolar electrode pair being located on the perimeter such that the first and second electrodes of each bipolar electrode pair are opposed to one another across the area, wherein the electrode array comprises additional bipolar electrode pairs (A1-H1, A2-H2) that include a first additional bipolar electrode pair that is associated with one of the at least three bipolar electrode pairs, wherein the first additional bipolar electrode pair includes a positive input electrode (A1-H1) at a first location on the perimeter and a negative input electrode (A2-H2) at a second location on the perimeter, the first and second locations being opposed to one another across the area, the first electrode of the associated bipolar electrode pair being a positive input electrode and being adjacent to the negative input electrode of the first additional bipolar electrode pair, the second electrode of the associated bipolar electrode pair being a negative input electrode and being adjacent to the positive input electrode of the first additional bipolar electrode pair, such that a signal obtained from the first additional bipolar electrode pair and a signal obtained from the associated bipolar electrode pair will have an opposite initial slope. a cardiac mapping catheter, the catheter including an electrode array comprising multiple electrodes (A1-H2, A2-H2), a catheter shaft and a handle; processing equipment in electrical communication with the electrode array, wherein each electrode is separately connected to insulated conductors extending proximally through the catheter shaft to terminals of a cable connector in or on the handle that is connected via a cable to the processing equipment, wherein the electrodes of the electrode array, when accordingly configured by the processing equipment, include least three bipolar electrode pairs (A1 - H1, A2-H2), each bipolar electrode pair including a first electrode (A1-H1) and a second electrode (A2-H2) at a distance from and in electrical communication with one another, the electrodes of the at least three bipolar electrode pairs (A1-H1, A2-H2) together defining a perimeter around an area, the first and second electrodes of each bipolar electrode pair being located on the perimeter such that the first and second electrodes of each bipolar electrode pair are opposed to one another across the area, wherein the electrode array comprises additional bipolar electrode pairs (A1-H1, A2-H2) that include a first additional bipolar electrode pair that is associated with one of the at least three bipolar electrode pairs, wherein the first additional bipolar electrode pair includes a positive input electrode (A1-H1) at a first location on the perimeter and a negative input electrode (A2-H2) at a second location on the perimeter, the first and second locations being opposed to one another across the area, the first electrode of the associated bipolar electrode pair being a positive input electrode and being adjacent to the negative input electrode of the first additional bipolar electrode pair, the second electrode of the associated bipolar electrode pair being a negative input electrode and being adjacent to the positive input electrode of the first additional bipolar electrode pair, such that a signal obtained from the first additional bipolar electrode pair and a signal obtained from the associated bipolar electrode pair will have an opposite initial slope.