The 8901A Modulation Analyzer combines the capabilities of several RF instruments to give complete, accurate characterization of modulated signals in the 150 kHz-1300 MHz frequency range. Measures AM and FM with 1% accuracy. Measures RF frequency and RF power (1 mW to 1 W). Completely automatic. Low internal noise. Option 002 1x10E-09/day Internal Reference. Option 003 Connections for External Local Oscillator. Option 004 Operation from 48 to 440Hz power (Temp. <40°C). Option 010 AM and FM Calibrators.