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The HP 4291B RF impedance/material analyzer provides a total solution for high-accuracy and easy measurement of surface-mount components and dielectric/magnetic materials. The HP 4291B uses a direct current-voltage measurement technique, opposing 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. An internal synthesizer sweeps frequency from 1 MHz to 1.8 GHz with 1 mHz resolution. A 1.8-m error-less cable connects the analyzer to a test station so you can extend your test point away from the analyzer without losing accuracy. Advanced calibration and error compensation function eliminate measurement error factors in fixtures and assure high accuracy and repeatability at DUT/MUT. The HP 4291B also provides automatic level control and monitor of test signals by using IBASIC programming function; devices can be measured under a constant voltage or current. Measure bias-dependent impedance characteristics with optional dc bias (up to 40 V and 100 mA). At the push of a button, the built-in Equivalent Circuit Analysis Function automatically calculates the circuit constant values of five circuit models. The HP 4291B has two measurement channels; each channel can be set to measure a single (e.g. Z) or dual (e.g. Z-theta) impedance parameter. The color TFT with split-display can show both active traces and memory traces (stored in RAM). Specifications. Measurement Impedance Parameters: |Z|, |Y|, theta, R, X, G, B, Cp, Cs, Lp, Ls, Rp, Rs, D, Q. Measurement Operating Frequency: 1 MHz to 1.8 GHz. Frequency Resolution: 1 mHz. Frequency Reference Accuracy: < ± 10 ppm/year @ ± 5° C. Options. Opt 1D5 Add High-Stability Frequency Reference. Opt 001 Add DC Bias. Opt 002 Add Material Measurement Software. Opt 011 Delete High-Impedance Test Head. Opt 012 Add Low-Impedance Test Head. Opt 013 Add High-Temperature High-Impedance Test Head. Opt 014 Add High-Temperature Low-Impedance Test Head.
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