主要特性与技术指标
综合解决方案提供 10 MHz 至 40 GHz 的频率范围
多点触控界面
包括频谱分析仪和 IQ 分析仪（基础）模式
内置标配选件包括 P03、PFR、FSA、NFE 和 B25
2.4 mm（阳头）输入连接器
描述
N8976B 高性能噪声系数分析仪可以进行快速、准确且可重复的噪声系数测量。与 SNS 系列噪声源和 U7227 系列 USB 前置放大器配合使用时，来自 SNS 的 ENR 数据和 USB 前置放大器数据自动下载到 N8976B。
N8976B 拥有多点触控界面，支持放大、缩小和拖动手势。只需手指一点，即可访问大多数菜单，无需改变屏幕。
通过一步完成多达 12 种被测器件设置的综合校准，显著简化了 Y 因数测量的噪声源校准。使用内部校准功能，无需执行用户校准，可以为许多类型的被测器件节省宝贵的测试时间。
内置噪声系数不确定度计算器可以预先填写来自 SNS 噪声源、USB 前置放大器的数据，以及所有必要的仪器参数，例如分析仪噪声系数、增益、噪声系数不确定度以及匹配等。默认噪声系数设置提供了同时的噪声系数和增益测量。使用表格（Table）视图，可以以表格形式同时查看多种测量结果，包括噪声系数、噪声因数、Y 因数、增益、Phot、Pcold 和 Teffective。
N8976B 的频谱分析仪模式和 IQ 分析仪（基础）模式提供了额外的灵活性，使客户除了能够测量噪声系数之外，还能根据需要更深入地分析被测器件特性。
44 GHz 内置前置放大器（选件 P44）、25 MHz 分析带宽（选件 B25）、精密频率参考（选件 PFR）、精细步进衰减器（选件 FSA）和本底噪声扩展（选件 NFE）作为标配选件提供。
通过经 LAN、USB 或 GPIB 接口连接到是德科技信号发生器，可以实现外部仿真本振与频率转换器件输入的连接。本振控制可从 N8973B 进行调整。
describe
The N8976B high performance noise coefficient analyzer can measure the noise coefficient quickly, accurately and repeatably. When used in conjunction with SNS series noise sources and U7227 series USB preamplifiers, ENR data and USB preamplifier data from SNS are automatically downloaded to N8976B.
The N8976B has a multitouch interface that allows you to zoom in, out and drag gestures. Most menus can be accessed with a single finger, without changing the screen.
The noise source calibration of Y factor measurement is significantly simplified by performing a comprehensive calibration of up to 12 device Settings in one step. The use of internal calibration functions, without the need for user calibration, can save valuable test time for many types of devices under test.
The built-in noise factor uncertainty calculator can pre-fill in data from SNS noise sources, USB preamplifiers, and all necessary instrument parameters such as analyzer noise factor, gain, noise factor uncertainty, and matching. The default noise factor setting provides simultaneous noise factor and gain measurements. Using a Table view, you can view several measurements at the same time in a Table, including noise coefficient, noise factor, Y factor, gain, Phot, Pcold, and Teffective.
The N8976B spectrum analyzer mode and the IQ analyzer (foundation) mode provide additional flexibility to allow customers to measure noise coefficients in addition to more in-depth analysis of device characteristics as needed.
The 44 GHz built-in preamplifier (option P44), 25 MHz analysis bandwidth (option B25), precision frequency reference (option PFR), fine step attenuator (option FSA), and background noise expansion (option NFE) are provided as standard options.
Through LAN, USB or GPIB interface connected to the technology signal generator, the external simulation of local vibration and frequency conversion device input connection can be achieved. The local vibration control can be adjusted from N8973B.
