Impedance Analyzers
This page provides product support information for discontinued and obsolete impedance analyzers.
For more information about replacement products: Next Generation of Impedance Analyzer
For more information on current LCR Meters & Impedance Measurement products, visit Keysight’s LCR Meter & Impedance Measurement products.
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4294A Precision Impedance Analyzer, 40 Hz to 110 MHz [Discontinued]
4294A Precision Impedance Analyzer, 40 Hz to 110 MHz [Discontinued]
- Frequency: 40 Hz to 110 MHz
- +/- 0.8 % basic accuracy
- Test Signal Level: 5m V to 1 Vrms or 200 uA to 20m Arms
- DC Bias: 0 V to +/-40 V or 0m A to +/-100m A
- Powerful impedance analysis function
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E4991A RF Impedance/Material Analyzer [Discontinued]
E4991A RF Impedance/Material Analyzer [Discontinued]
- Frequency: 1 MHz to 3 GHz
- +/- 0.8 % basic accuracy
- Dielectric/magnetic material measurement (Option E4991A-002)
- Reliable on-wafer measurement (Option E4991A-010)
- Temperature characteristic measurement (Option E4991A-007)
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4396B Network/Spectrum/Impedance Analyzer [Obsolete]
4396B Network/Spectrum/Impedance Analyzer [Obsolete]
The 4396B provides excellent RF vector network, spectrum, and optional impedance measurements for lab and production applications.
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4291B RF Impedance/Material Analyzer [Obsolete]
4291B RF Impedance/Material Analyzer [Obsolete]
The Keysight 4291B has been replaced by the E4991A RF Impedance/Material Analyzer.
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4195A Network/Spectrum Analyzer [Obsolete]
4195A Network/Spectrum Analyzer [Obsolete]
The Keysight 4195A has been replaced by the Keysight E5061B ENA Series Network Analyzer.
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4194A Impedance/Gain-Phase Analyzer [Obsolete]
4194A Impedance/Gain-Phase Analyzer [Obsolete]
The 4194A has been replaced by the 4294A Precision Impedance Analyzer or E5061B ENA Series Network Analyzer.
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4192A LF Impedance Analyzer, 5 Hz to 13 MHz [Obsolete]
4192A LF Impedance Analyzer, 5 Hz to 13 MHz [Obsolete]
The 4192A has been replaced by the 4294A Precision Impedance Analyzer or E5061B ENA Series Network Analyzer.
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4395A-1D5 High Stability Frequency Reference [Discontinued]
4395A-1D5 High Stability Frequency Reference [Discontinued]
High Stability Frequency Reference
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4396B-1D5 High Stability Frequency Reference [Discontinued]
4396B-1D5 High Stability Frequency Reference [Discontinued]
High Stability Frequency Reference
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E4991A-001 DC Bias [Discontinued]
E4991A-001 DC Bias [Discontinued]
The E4991A-001 is no longer available, the replacement product is E4991B Impedance Analyzer, 1MHz to 500 MHz/1 GHz/3 GHz
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E4991A-002 Material Measurement Firmware [Discontinued]
E4991A-002 Material Measurement Firmware [Discontinued]
The E4991A-002 is no longer available, the replacement product is E4991B Impedance Analyzer, 1MHz to 500 MHz/1 GHz/3 GHz
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E4991A-007 Temperature Characteristic Test Kit [Discontinued]
E4991A-007 Temperature Characteristic Test Kit [Discontinued]
The E4991A-007 is no longer available, the replacement product is E4991B Impedance Analyzer, 1MHz to 500 MHz/1 GHz/3 GHz
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E4991A-010 Probe Station Connection Kit [Discontinued]
E4991A-010 Probe Station Connection Kit [Discontinued]
The E4991A-010 is no longer available, the replacement product is E4991B Impedance Analyzer, 1MHz to 500 MHz/1 GHz/3 GHz
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E4991A-1D5 High Stability Frequency Reference [Discontinued]
E4991A-1D5 High Stability Frequency Reference [Discontinued]
E4991A-1D5 is no longer available, the replcaement product is E4991B Impedance Analyzer, 1MHz to 500 MHz/1 GHz/3 GHz
![4294A Precision Impedance Analyzer, 40 Hz to 110 MHz [Discontinued]](https://s7.images.keysight.com/is/image/Keysight/PROD-1000000858.epsg.pro-IS?$ThumbnailPreset$&defaultImage=no-product-image)
![E4991A RF Impedance/Material Analyzer [Discontinued]](https://s7.images.keysight.com/is/image/Keysight/PROD-1000003705.epsg.pro-IS?$ThumbnailPreset$&defaultImage=no-product-image)
![4396B Network/Spectrum/Impedance Analyzer [Obsolete]](https://s7.images.keysight.com/is/image/Keysight/PROD-1000000865.epsg.pro-IS?$ThumbnailPreset$&defaultImage=no-product-image)
![4291B RF Impedance/Material Analyzer [Obsolete]](https://s7.images.keysight.com/is/image/Keysight/PROD-1000000857.epsg.pro-IS?$ThumbnailPreset$&defaultImage=no-product-image)
![4195A Network/Spectrum Analyzer [Obsolete]](https://s7.images.keysight.com/is/image/Keysight/PROD-334101-IS?$ThumbnailPreset$&defaultImage=no-product-image)
![4194A Impedance/Gain-Phase Analyzer [Obsolete]](https://s7.images.keysight.com/is/image/Keysight/PROD-1000003398.epsg.pro-IS?$ThumbnailPreset$&defaultImage=no-product-image)
![4192A LF Impedance Analyzer, 5 Hz to 13 MHz [Obsolete]](https://s7.images.keysight.com/is/image/Keysight/PROD-330690-IS?$ThumbnailPreset$&defaultImage=no-product-image)
![4294A-1D5 High Stability Frequency Reference [Discontinued]](https://s7.images.keysight.com/is/image/Keysight/PROD-1154806-IS?$ChildPreset$&defaultImage=no-product-image)
![4294A-1D5 High Stability Frequency Reference [Discontinued]](https://s7.images.keysight.com/is/image/Keysight/PROD-1154806-IS?$ThumbnailPreset$&defaultImage=no-product-image)
![4395A-001 Add DC Source [Discontinued]](https://s7.images.keysight.com/is/image/Keysight/PROD-1154812-IS?$ChildPreset$&defaultImage=no-product-image)
![4395A-001 Add DC Source [Discontinued]](https://s7.images.keysight.com/is/image/Keysight/PROD-1154812-IS?$ThumbnailPreset$&defaultImage=no-product-image)
![4395A-010 Impedance Measurement Function [Discontinued]](https://s7.images.keysight.com/is/image/Keysight/PROD-1163718-IS?$ChildPreset$&defaultImage=no-product-image)
![4395A-010 Impedance Measurement Function [Discontinued]](https://s7.images.keysight.com/is/image/Keysight/PROD-1163718-IS?$ThumbnailPreset$&defaultImage=no-product-image)
![4395A-1D5 High Stability Frequency Reference [Discontinued]](https://s7.images.keysight.com/is/image/Keysight/PROD-1163887-IS?$ThumbnailPreset$&defaultImage=no-product-image)
![4395A-1D6 Time-Gated Spectrum Analysis [Discontinued]](https://s7.images.keysight.com/is/image/Keysight/PROD-1163889-IS?$ChildPreset$&defaultImage=no-product-image)
![4395A-1D6 Time-Gated Spectrum Analysis [Discontinued]](https://s7.images.keysight.com/is/image/Keysight/PROD-1163889-IS?$ThumbnailPreset$&defaultImage=no-product-image)
![4395A-1D7 50 - 75 ohm minimum Loss Pad [Discontinued]](https://s7.images.keysight.com/is/image/Keysight/PROD-1163892-IS?$ChildPreset$&defaultImage=no-product-image)
![4395A-1D7 50 - 75 ohm minimum Loss Pad [Discontinued]](https://s7.images.keysight.com/is/image/Keysight/PROD-1163892-IS?$ThumbnailPreset$&defaultImage=no-product-image)
![4396B-010 Impedance Measurement Function [Discontinued]](https://s7.images.keysight.com/is/image/Keysight/PROD-1159310-IS?$ChildPreset$&defaultImage=no-product-image)
![4396B-010 Impedance Measurement Function [Discontinued]](https://s7.images.keysight.com/is/image/Keysight/PROD-1159310-IS?$ThumbnailPreset$&defaultImage=no-product-image)
![4396B-1D5 High Stability Frequency Reference [Discontinued]](https://s7.images.keysight.com/is/image/Keysight/PROD-1167681-IS?$ThumbnailPreset$&defaultImage=no-product-image)
![4396B-1D6 Time-Gated Spectrum Analysis [Discontinued]](https://s7.images.keysight.com/is/image/Keysight/PROD-1167683-IS?$ChildPreset$&defaultImage=no-product-image)
![4396B-1D6 Time-Gated Spectrum Analysis [Discontinued]](https://s7.images.keysight.com/is/image/Keysight/PROD-1167683-IS?$ThumbnailPreset$&defaultImage=no-product-image)
![4396B-1D7 50 - 75 ohm minimum Loss Pad [Discontinued]](https://s7.images.keysight.com/is/image/Keysight/PROD-1167685-IS?$ChildPreset$&defaultImage=no-product-image)
![4396B-1D7 50 - 75 ohm minimum Loss Pad [Discontinued]](https://s7.images.keysight.com/is/image/Keysight/PROD-1167685-IS?$ThumbnailPreset$&defaultImage=no-product-image)
![E4991A-001 DC Bias [Discontinued]](https://s7.images.keysight.com/is/image/Keysight/PROD-1154776-IS?$ThumbnailPreset$&defaultImage=no-product-image)
![E4991A-002 Material Measurement Firmware [Discontinued]](https://s7.images.keysight.com/is/image/Keysight/PROD-1163709-IS?$ThumbnailPreset$&defaultImage=no-product-image)
![E4991A-007 Temperature Characteristic Test Kit [Discontinued]](https://s7.images.keysight.com/is/image/Keysight/PROD-1163711-IS?$ThumbnailPreset$&defaultImage=no-product-image)
![E4991A-010 Probe Station Connection Kit [Discontinued]](https://s7.images.keysight.com/is/image/Keysight/PROD-1163714-IS?$ThumbnailPreset$&defaultImage=no-product-image)
![E4991A-1D5 High Stability Frequency Reference [Discontinued]](https://s7.images.keysight.com/is/image/Keysight/PROD-1163716-IS?$ThumbnailPreset$&defaultImage=no-product-image)
