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Keysight / Agilent 4294A Precision Impedance Analyzer, 40 Hz to 110 MHz

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The Keysight/Agilent 4294A Precision Impedance Analyzer is a versatile instrument for accurate impedance measurements. Covering a frequency range of 40 Hz to 110 MHz, it is suitable for characterizing electronic components, circuits, and materials. The 4294A offers high precision and reliability, making it ideal for research, development, and quality control applications.

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Equipment info

The Keysight/Agilent 4294A Precision Impedance Analyzer measures impedance across 40 Hz to 110 MHz with ±0.08% basic accuracy. This auto-balancing bridge instrument characterizes components, circuits, and materials in R&D, qualification, quality control, and production environments.

– Technical Specifications

Frequency Range: 40 Hz to 110 MHz

Impedance Measurement:
• Range: 3 mΩ to 500 MΩ (typical)
• Basic Accuracy: ±0.08%
• Q Accuracy: ±3% @ Q = 100, ≤10 MHz

Test Signal Levels:
• Voltage: 5 mVrms to 1 Vrms, 1 mV resolution
• Current: 200 µArms to 20 mArms, 20 µA resolution

DC Bias:
• Voltage: 0 V to ±40 V, 1 mV resolution
• Current: 0 mA to ±100 mA, 40 µA resolution

Measurement Parameters: |Z|-θ, R-X, Ls-Rs, Ls-Q, Cs-Rs, Cs-Q, Cs-D, |Y|-θ, G-B, Lp-G, Lp-Q, Cp-G, Cp-Q, Cp-D, Complex Z-Y, |Z|-Ls, |Z|-Cs, |Z|-Lp, |Z|-Cp, |Z|-Rs, |Z|-Q, |Z|-D, Lp-Rp, Cp-Rp, plus basic parameters: |Z|, |Y|, θ, R, X, G, B, L, C, D, Q

Sweep Capabilities:
• Parameters: Frequency, OSC level (V/I), DC bias (V/I)
• Modes: Linear, Log, List; Manual Up/Down; Segment sweep
• Points: 2 to 801 per sweep
• Speed: 3 msec/point @ f ≥ 500 kHz, BW = 1

Display & Interface:
• 8.5-inch TFT color display with VGA monitor output
• LAN (10 Base-T), Centronics printer, two programmable digital I/O (24-bit and 8-bit)

Environment:
• Operating Temperature: 0 °C to 40 °C
• Warm-up: ≥30 minutes

– Key Features

• Four-terminal pair configuration (standard)
• High Q/low D accuracy for low-loss component analysis
• DC voltage bias to ±40 V or DC current bias to ±100 mA
• Advanced calibration and error compensation
• Equivalent circuit analysis function

– Measurement Configurations

• Four-terminal pair (standard)
• 7-mm one-port (with 42942A Terminal Adapter)
• Impedance probe (with 42941A Impedance Probe)

– Typical Applications

Component and circuit characterization, DC bias dependency evaluation, fixture-based in-situ testing, and production quality control across wide impedance and frequency ranges.

MPN

4294A

Frequency Range

40 Hz to 110 MHz

Voltage / Current Range

DC Bias: 0 mA to ±100 mA, DC Bias: 0 V to ±40 V; Current: 200 µArms to 20 mArms, Voltage: 5 mVrms to 1 Vrms

Brand Name

Keysight / Agilent

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Product Condition & Availability
Keysight / Agilent 4294A Precision Impedance Analyzer, 40 Hz to 110 MHz is in excellent working condition and has been thoroughly tested for performance and reliability. We offer both new and professionally refurbished options, depending on availability and customer preference.

 

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Beyond individual products, Aumictech provides end-to-end solutions for manufacturing line deployment and test station setup. Our team can assist with system integration, configuration, and equipment selection tailored to your production requirements.

Trusted Industry Experience
With over a decade of experience, Aumictech is a recognized leader in RF and optical test equipment sales and services. All units are supported by our in-house calibration and repair facility based in Downingtown, PA, ensuring technical reliability and long-term value.

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We’re committed to exceptional customer service, offering a 15-day return or replacement (ROR) policy for peace of mind. Our team is always available to assist with pre- and post-sale support.

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We offer rapid global shipping through FedEx, UPS, and DHL, with most orders dispatched within 1–3 business days. Multiple secure payment options are available, including PayPal, ACH, wire transfers, and major credit cards.

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