Precision Impedance Analyzer 40Hz-110MHz. Option: 1D5 = High-stability frequency reference. Unit sold with a valid calibration certificate. The Agilent (now Keysight) 4294A is a Precision Impedance Analyzer with a bandwidth from 40 Hz to 110 MHz and a basic impedance accuracy of +/- 0.08 %. It is an integrated solution for efficient impedance measurements and analysis of components and circuits and the optimum choice for measuring L, C, and R make up an RFID tag as well as the RF portion of a reader/writer. Excellent high Q/ low D accuracy, enables analysis of low-loss components Wide signal ranges, enables device evaluation under actual operating conditions Test signal level range: 5 mV to 1 V rms or 200 uA to 20 mA rms DC bias range: 0 V to +/- 40 V or 0 mA to +/- 100 mA Accurate measurements over wide impedance range and wide frequency range Powerful impedance analysis function Easy to use and versatile PC connectivity Advanced calibration and error compensation functions to eliminate measurement error factors