System and method of photoaltering a material. An equivalent charge resistance is determined based on predetermined equivalent charge resistance data, and an effective no load charge voltage is determined based on predetermined effective no load charge voltage data. The base includes two opposite sidewalls each forming a fixing portion. Additionally SoP’s generated in neighboring macrocell sections may be selectively and incrementally cascaded for supplemental summing into the local SoP signal. In another embodiment, the present invention relates to a streamer cable comprising an outer skin and at least one sensor positioned within the outer skin.