Constellation full contact mapping catheters allow the physician to efficiently and comprehensively map focal arrhythmias in real-time. Pacing capabilities facilitate the assessment of entrainment, conduction velocity studies, and refractory period. Provides simultaneous longitudinal and circumferential signals for more accurate 3-D mapping and features a super-elastic alloy spline construction. The unique, flexible basket design conforms to atrial anatomy to facilitate accurate placement and to save repositioning time. 64 electrodes provide comprehensive, real-time 3-D information with high resoution electrograms for identification of earliest activationsites. A remote display allows precise orientation of the ablation catheter. Comes complete with a switching/locating remote display. Provides comprehensive, real-time visual feedback and efficient 3-D mapping, facilitates ablation catheter positioning, and enables more accurate ablation.