Spike provides real-time spectrum analysis for all Signal Hound Analyzers and improved stability and high dynamic range for the TG tracking generators. It turns a Signal Hound spectrum analyzer into a vector signal analyzer with its new digital modulation analysis capabilities. The software can perform EVM measurements and view complex plots for a number of PSK/QAM digital modulations. It has an intutive interface with graphics that now include color persistence and a 2D waterfall display. Developers can customize the Spike software by changing, adding, and deleting functions, layouts, and utilities in the SA and TG devices.