4291A HP Agilent Impedance Analyzer

Additional Features:

• Basic accuracy: ±0.8%
• Advanced calibration and error compensation
• Internal generator sweeps from 1 MHz to 1.8 GHz with 1 mHz resolution
• Independent parameter selection in 2 channels
• Direct read-out permittivity, permeability
• Versatile analysis (temperature, cole-cole plot, relaxation time)
• Sweep parameters (frequency, ac level, dc bias, temperature)
• Gain-Phase measurements include amplitude, phase, and group delay
• Impedance measurements include |Z|, |Y|, phase, R, X, G, B, Cp, Cs, Lp, Ls, Rp, Rs, D, Q
• DC bias to ±35 V
• GPIB

The HP 4291A RF impedance/material analyzer provides a total solution for high-accuracy and easy measurement of surface-mount components and dielectric/magnetic materials. The HP 4291A 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 1.8m 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 4291A 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 (similar to HP 419A's Equivalent Circuit Analysis Function).

The HP 4291A has two measurement channels; each channel can be set to measure a single (e.g. 2) or dual (e.g. Z-theta) impedance parameter. The color CRT with split-display can show both active traces and memory traces (stored in RAM). A built-in floppy disk drive stores programs and test data in either LIF or MS-DOS format.

With optional IBASIC (Option 1C2), you can control external test equipment such as a temperature chamber or wafer prober directly from the HP 4291A. You do not need a separate instrument controller. Option 1C2 gives you a keyboard and the HP IBASIC programming language for test automation and integration.

Material Evaluation
The HP 4291A enables easy and sophisticated material evaluation and improves material evaluation quality and efficiency. The HP 4291A provides the total dielectric/magnetic material measurement solutions in wide frequency range (1 MHz to 1.8 GHz).

Test Fixtures
Select from four types of component test fixtures: HP 16191A, HP 16192A, HP 16193A, and HP 16194A. These test fixtures directly connect to the test station's APC-7 connector. Each fixture is designed for a different component size range, from 0.5 mm to 20 mm, and can handle different types of termination. These adjustable fixtures simplify device connection. For temperature coefficient testing, the HP 16194A high-temperature component test fixture can be used in a temperature oven from -55° to +200° C.

Together with the HP 4291A's built-in compensation software, the fixtures ensure impedance accuracy and measurement repeatability. The HP 16453A dielectric material test fixture and HP 16454A magnetic material test fixture improve the accuracy and ease of use for permittivity or permeability measurements. These material fixtures have wide operating temperature of-55° to +200° C.