Keysight U8489A USB热电偶功率传感器是一款高性能的测量设备，广泛应用于高频功率测量领域。
主要特性
频率范围：支持从直流至120 GHz的超宽频率范围，适用于毫米波应用。
测量速度：在自由运行/快速缓冲模式下，测量速度超过900个读数/秒，确保快速而精确的测量。
功率线性度：小于0.6%，在同类型产品中表现出色。
动态范围：宽广的功率测量范围，从-35 dBm至+20 dBm。
实时计算测量不确定度：能够实时计算测量不确定度，无需手动计算，提高测试效率并确保高精度。
S参数和伽马校正功能：校正阻抗失配误差及插入误差，进一步提升测量精度。
软件支持：内置BenchVue软件许可证（BV0007B），帮助用户轻松连接和控制仪器，自动执行测试序列。
Keysight U8489A基于热电偶原理工作。热电偶利用塞贝克效应，通过两种不同材质的金属导体构成，当接点温度不同时产生热电动势。该电动势与温度差相关，传感器通过测量热电动势来计算吸收的功率。测量到的功率被转化为数字信号，通过USB接口传输到计算机或其他设备，进行进一步处理和显示。
The Keysight U8489A USB thermocouple power sensor is a high-performance measurement device, widely used in high-frequency power measurement fields.
Main features
Frequency range: Supports an ultra-wide frequency range from DC to 120 GHz, suitable for millimeter-wave applications.
Measurement speed: In free-run/fast-buffer mode, the measurement speed exceeds 900 readings per second, ensuring fast and accurate measurements.
Power linearity: Less than 0.6%, performing well among similar products.
Dynamic range: A wide power measurement range from -35 dBm to +20 dBm.
Real-time calculation of measurement uncertainty: Capable of calculating measurement uncertainty in real time, eliminating the need for manual calculation, improving test efficiency and ensuring high accuracy.
S-parameter and gamma correction functions: Corrects impedance mismatch errors and insertion errors, further enhancing measurement accuracy.
Software support: Built-in BenchVue software license (BV0007B) helps users easily connect and control the instrument, and automatically execute test sequences.
The Keysight U8489A operates based on the thermocouple principle. The thermocouple utilizes the Seebeck effect, composed of two different metal conductors. When the junction temperatures are different, a thermoelectric potential is generated. This potential is related to the temperature difference, and the sensor calculates the absorbed power by measuring the thermoelectric potential. The measured power is converted into a digital signal and transmitted to a computer or other devices via the USB interface for further processing and display.
