Peak atlas it network cable analyser peak utp05 the peak atlas it is a fast comprehensive tool for testing rj45 based network cabling such as cat5 cat6 etc plug one end of your cabling into the atlas it and the other end into one of the supplied miniature terminators and let the atlas it analyse the cable runit will identify the connection configuration straight through crossover token ring and many other types it will also tell you if there are any faults such as open short or