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Accelerate Advanced Package & 3DIC Designs
Design, model, and validate complex 3D interconnect architectures with a powerful standalone design environment.
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Scale AI Compute. Simplify Validation.
Automate transmitter and receiver validation across next-generation I/O, memory, and fabric interfaces.
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End-to-End Validation for AI Data Center
Strengthen 1.6T network reliability for AI-scale workloads from transceivers to interconnects.
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Take On Complex MIMO Signals
Pair Keysight VSA software with the new XA5 signal analyzer for advanced visualization, demodulation, and analysis — start your 30-day trial today.
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Introducing AI-Enhanced Packet Brokers
With extra memory and storage, these enhanced NPBs run Keysight's AI security and performance monitoring software and AI stack.
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Accelerate Semiconductor Innovation
Explore end-to-end workflows spanning IC design, validation, wafer test, and photonics.
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Trade In Before You Buy New
Save up to 50% on our latest instruments with eligible Keysight or competitor trade-ins.
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448 Gb/s Waveform Generation
Achieve 200+ Gbaud multi-level modulated signals with high-speed AWGs for digital and optical standards.
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The Right Connection Makes the Measurement
Maximize accuracy and performance with precision accessories engineered for Keysight instruments.
Trade In Before You Buy NewSave up to 50% on our latest instruments with eligible Keysight or competitor trade-ins.
Scale to Hundreds of Channels. Keep Measurements in Sync.Four channels per 1U of rack space, up to 1 GHz bandwidth, and multi-oscilloscope synchronization.
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Purpose-built solutions engineered for the design and test challenges unique to your industry.
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Authoritative application notes, data sheets, reference designs, and test procedures to accelerate design and validation decisions.
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Accessories
Explore the complete portfolio of Keysight accessories designed to complement and extend your instruments. Use the filters below to quickly find compatible accessories such as modules, cables, adapters, and other system components to configure, expand, and optimize your test system for your specific measurement needs.
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Coaxial Thermistor Mount
Coaxial Thermistor Mount
478A
Provides high accuracy even in routine power measurements, with temperature compensated for low drift
Notice to EU customers: This product is no longer available due to lack of compliance with EU RoHS directive 2011/65/EU. Keysight will continue service and support to the end of worldwide support life.
- High accuracy even in routine power measurements
- Temperature compensated for low drift
- Measures microwave power as low as one microwatt
- Shows calibration factor and effective efficiency at 12 frequencies
- Frequency Range: 10 MHz to 10 GHz
- Maximum SWR: 10 MHz to 25 MHz 1.75; 25 MHz to 7GHz 1.30; 7 GHz to 10 GHz 1.50
- Available options: 478A-H75 and 478A-H76 for frequency range 1 MHz to 1 GHz (Max. SWR 1.3, 1.05 at 50 MHz). 478A-H76 provides standard lab calibration at 50 MHz
The Keysight 478A provides high efficiency and good radio frequency (RF) match. Used in conjunction with the N432A or 432A power meters, they provide high accuracy even in routine power measurements. These thermistor mounts are temperature compensated for low drift, even in the presence of thermal shocks, permitting measurement of microwave power as low as one microwatt. Each mount contains data showing calibration factor and effective efficiency at six frequencies, directly traceable to the U.S. National Institute Standards and Technology (NIST) at those frequencies where NIST provides calibration service.
Coaxial Thermistor Mount
Coaxial Thermistor Mount
8478B
Provides high accuracy even in routine power measurements, with temperature compensated for low drift
Notice to EU customers: This product is no longer available due to lack of compliance with EU RoHS directive 2011/65/EU. Keysight will continue service and support to the end of worldwide support life.
- High accuracy even in routine power measurements
- Temperature compensated for low drift
- Measures microwave power as low as one microwatt
- Shows calibration factor and effective efficiency at 16 frequencies
- Frequency Range: 10 MHz to 18 GHz
- Maximum SWR: 10 MHz to 30 MHz 1.75; 30 MHz to 100 MHz 1.35; 100 MHz to 1 GHz 1.10; 1 GHz to 12.4 GHz 1.35; 12.4 GHz to 18 GHz 1.60
- 1 year standard warranty
The Keysight 8478B provides high efficiency and good radio frequency (RF) match. Used in conjunction with the N432A or 432A power meters they provide high accuracy even in routine power measurements. These thermistor mounts are temperature compensated for low drift, even in the presence of thermal shocks, permitting measurement of microwave power as low as one microwatt. Each mount contains data showing calibration factor and effective efficiency at six frequencies, directly traceable to the U.S. National Institute Standards and Technology (NIST) at those frequencies where NIST provides calibration service.
