是德N4000A噪声源 主要特性与技术指标 Main characteristics and technical indexes 用电子方式存储超噪比（ENR）校准数据，可以降低出现人为错误的机率 Electronic storage of ultra noise ratio (ENR) calibration data, you can reduce the probability of occurrence of human error ENR 数据自动**到 NFA，可加快整体设置速度 ENR data is automatically downloaded to the NFA, can accelerate the overall set up speed 温度补偿可提高测量精度，使器件性能具有更严格的技术指标 Temperature compensation can improve the measurement accuracy, so that the performance of the device has a more stringent technical indicators 3.5 毫米连接器作为标准配置提供，N 型连接器作为选件 001 提供 3.5 mm connector as standard, N type connectors as option 001 provides 如欲了解完整信息，请参考产品概述 For complete information, please refer to the product overview 如欲了解该产品的详细技术指标，请查看操作服务指南 To understand the detailed technical specifications of the product, please see the operating service guide.