The Model 2251 Phase Angle Voltmeter from North Atlantic Industries is one of the most versatile AC Measurement Instruments available. It employs a microprocessor-based design, utilizing Fast-Fourier Transform techniques that combine many of the capabilities of today's network/waveform analyzers in a Digital Analyzing Voltmeter configuration. Similar to Model 2250, the 2251 incorporates the most commonly used functions, providing a more cost-effective measurement instrument with fewer features and reduced accuracy requirements. This Phase Angle Voltmeter is specifically designed for the Synchro/Resolver and LVDT/RVDT marketplace. One touch allows the 2251 to make highly accurate ratio measurements in both phase-sensitive and voltage modes; measures percent, Total Harmonic Distortion and the magnitude and phase of selected harmonic, and computes the percent deviation of a signal from a selected nominal. Isolated inputs allow null, ratio and gain measurements of key parameters.