回收工厂闲置/倒闭电子仪器，个人处理仪器，欢迎来电！！
本公司长期专业销售、租赁、维修、计量、回收高频二手仪器！
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二手仪器回收/陈卫平
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地址:广东东莞市塘厦镇塘厦
本公司长期回收/销售/维修/凭租仪器:音频仪器,视频仪器,高频仪器(如网络分析仪,频谱分析仪高频信号源,无线电综合测试仪等高频仪器,并高频承接仪器维修)!
The company long-term recovery/sales/maintenance/by renting equipment: audio equipment, video equipment, high frequency instrument (such as network analyzer, spectrum analyzer, the high frequency signal source, radio high frequency equipment, such as general tester and high frequency receiving apparatus maintenance)!
E4448A PSA 频谱分析仪，3 Hz - 50 GHz
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（E4448A回收）主要特性与技术指标
（E4448A回收）性能
（E4448A回收）+/-0.19 dB 绝对幅度精度
（E4448A回收）154 dBm 显示平均噪声电平（DANL）
（E4448A回收）10 kHz 偏置时的相噪：-118 dBc/Hz
（E4448A回收）81 dB W-CDMA ACLR 动态范围
（E4448A回收）分析带宽
（E4448A回收）10 MHz 分析带宽（用于基本模式的选件 B7J）
（E4448A回收）可选 40 或 80 MHz 分析带宽，以便捕捉和测量复杂信号。观看演示
（E4448A回收）适用于 40 或 80 MHz 分析带宽的 -78 dB（额定值）三阶互调
（E4448A回收）适用于校准后的 VSA 测量的 300 MHz 分析带宽
（E4448A回收）灵活性
（E4448A回收）灵活的平台，包含 16 个可选且易于使用的内置测量专用软件和硬件选（E4448A回收）件标配 PowerSuite 一键式功率测量
（E4448A回收）通用数据分析、可视化、计量自动化的数据分析软件 MATLAB。PSA 系（E4448A回收）列 MATLAB软件
（E4448A回收）描述
（E4448A回收）E4448A PSA 高性能频谱分析仪可测量和监测频率高达 50 GHZ的复杂射（E4448A回收）频、微波和毫米波信号。使用外混频选件可进一步扩展频率范围：使用（E4448A回收）安捷伦外混频器时可达到 110 GHz；使用其他厂商的混频器时可达到 （E4448A回收）325 GHz。
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E4400系列：
E4401A，E4401B，E4403A，E4404A，E4405A，E4406A，E4407A，E4408A，
E4402B，E4411B，E4408B，E4411A，E4403B，E4404B，E4406B，E4405B，E4407B
E4440系列：
E4443A，E4443B，E4440B，E4445A，E4445B，E4448A，E4446A，E4440A，
E4447A，
E7400系列：
E7405A，E7403A，E7404A，E7401A，E7402A
N9300系列：
N9320A，N9320B，N9340B，N9340A，N9342C，N9010A，N9020A，N9030A
R3132A，R3361C，R3261C，R3131，HM5010，HM5011，
HM5012，HM5014，HM5510，HM5511，SA970，SA-930，
MD1620C，MS2661A，PSA-3000，SA7270A，SA7270
R3265，R3267，MS2665C，MS2667C，MS2721B，R3465A，
R4131D，MS2711A，
Rapid growth in satellite and wireless communications markets has contributed to the need for improved overall system performance which, in turn, applies pressure to improve the noise figure measurement and performance of subsystems and their components.
To do this accurately, it is necessary to understand how a number of variables affect the overall measurement uncertainty. For measurements with an analyzer that measures noise figure, the measurement system contributors typically include:
the analyzer itself
the noise source
the characteristics of the device under test (DUT)
These factors interact in a complex way, but the overall measurement uncertainty can be modeled. The purpose of our 'Noise Figure Uncertainty Calculator' is to provide the measurement uncertainty associated with a particular DUT based on its characteristics and the specifications of the measurement system. For the model to be accurate in the Y-factor measurement technique case, the DUT must have reasonable reverse isolation, so that mismatch on one port does not drastically affect the impedance seen at the other port. For a more complete analysis refer to the article "Calculate the Uncertainty of NF Measurements", written by Duncan Boyd, Microwaves & RF October 1999, pp.93-102.