RF Impedance/Material Analyzer 1MHz-3GHz, Opt.: 001 = DC Voltage Bias; 002 = Dielectric/ Magnetic Material Measurement; and 1D5 = High-stability Frequency Reference The Agilent (now Keysight) E4991A is a RF impedance/material analyzer and offers ultimate impedance measurement performance and powerful built in analysis function. It will provide innovations in R&D of components and circuit designers who evaluate components in the range of 3 GHz. The E4991A uses an RF-IV technique, as opposed to the reflection measurement technique, for more accurate impedance measurement over wide impedance range. Basic impedance accuracy is +/-0.8%. High Q accuracy enables low-loss component analysis. The internal synthesizer sweeps frequency from 1 MHz to 3 GHz with 1 mHz resolution. Basic accuracy: +/- 0.8 % Sweep parameters: Frequency: 1 MHz to 3 GHz Oscillator level: up to 1 dBm/0.5 Vrms/10 mArms DC bias level (option E4991A-001): +/- 40 V or +/- 50 mA Windows-styled user interface Built-in VBA programming function Data transfer through LAN Interface Measurement options available: Dielectric/magnetic material measurement (option 002) Reliable on-wafer measurement (option 010) Temperature characteristic measurement (option 007)