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3D Interconnect Designer
3D Interconnect Designer provides a flexible modeling and optimization environment for any advanced interconnect structure, including chiplets, stacked die, packages, and PCBs.
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Save up to 50% on an XR8 Oscilloscope
Get faster digital validation for less with a trade-in.
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Discover Keysight AI Data Center Builder
Emulate every part of your data center infrastructure. Emulate Anything. Optimize Everything.
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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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Precision In-Circuit Testing for Production
Achieve fast, accurate board-level testing with robust inline and offline ICT designed for modern manufacturing.
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Accelerate Your Innovation Engine
Explore curated support plans, prioritized to keep you innovating at speed.
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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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Stream 120 MHz I/Q Data to Your Laptop in the FieldPinpoint interference with post-processing spectrum management software in the lab.
Find the Right ATE Power SolutionUse this selector tool to quickly identify the best power supply for your aerospace and defense ATE requirements.
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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.
