Keysight 478A Coaxial Thermistor Mount 10MHz to 10GHz
Keysight 478A resolves microwave power measurement drift through temperature-compensated thermistors and NIST-traceability, enabling precision monitoring as low as 1 microwatt across a 10 GHz bandwidth.
- Display Spec: Coaxial thermistor mount interface
- Precision Metric: 1 microwatt minimum power measurement
- Digital Interface: 10 MHz to 10 GHz wideband
- Power Range: 1.30 to 1.50 Max SWR
- Field Usage: Wideband RF microwave power measurement
Compliance: NIST Calibration Factor traceable.
| Brand | Keysight Technologies |
| MPN | 478A |
| Model SKU | Keysight 478A Coaxial Thermistor Mount (10MHz to 10GHz) |
| Frequency Range | 10 MHz to 10 GHz wideband RF support |
| Power Range | Measures microwave power as low as 1 microwatt (1 µW) |
| Max SWR | 1.30 (25 MHz to 7GHz); 1.50 (7 GHz to 10 GHz) |
| Traceability | Traceable to U.S. NIST Calibration Factor data |
| Stability | Temperature compensated for extremely low drift |
| Compatibility | Optimized for Keysight N432A or 432A power meters |
| Warranty | 3-Year Manufacturer Warranty (USA Standard) |
| Each Unit Includes | 478A Thermistor Mount and NIST Calibration Data |
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