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发布时间: 2018 - 06 - 28
改善噪声系数测量的三个技巧是德科技KEYSIGHT 昨天『噪声系数』又称『噪声因数』是许多接收机和射频系统的关键性能参数噪声系数测量不确定度是实现高良品率和低成本的关键因素“三个技巧”将帮助您在测量低噪声放大器、混频器和变频器的噪声系数性能时,显著改善 测量不确定度提高 良品率 降低 成本   技巧(一)使用噪声系数不确定度计算器进行快速计算不确定度的计算不仅复杂,而且相当耗时。幸运的是,使用计算器可以更简单、更快速地完成此项工作。计算测量不确定度,最快的方式是使用内置有不确定度计算器的信号分析仪,在一键式噪声系数测量应用中经常会用到这种分析仪。不确定度计算器直接在仪器显示屏上报告当前测量的总体不确定度。凭借内置的不确定度计算器X系列噪声系数测量应用软件可以加速并简化测量过程▼   技巧(二)尽量选择不确定度更低的噪声源由于 ENR 不确定度是影响总体测量精度的最大因素,因此对于您的特定应用来说,应该尽量选择不确定度更低的噪声源。是德科技 SNS 系列智能噪声源不仅性能出众,而且可以简化测量设置。当连接到兼容的信号分析仪时,SNS 会自动将存储的校准数据下载到信号分析仪,并补偿温度漂移。比较总体噪声系数测量不确定度结果显示 SNS 比标准噪声源更好▼   技巧(三)使用前置放大器当噪声系数测量系统中使用了信号分析仪时,建议使用前置放大器来改善分析仪的噪声系数。如果 DUT 具有非常高的增益,那么它可以驱动信号分析仪进行压缩。在大多数应用中,包括 DUT 的噪声和增益都很低的情况下,前置放大器都有助于减少测量不确定度。在 DUT 和分析仪之间使用智能前置放大器可以提高噪声系数性能▼使用 X 系列信号分析仪进行高质量的噪声系数测量每个技巧都有助于您降低噪声系数测量的不确...
发布时间: 2018 - 06 - 28
手把手教你:如何应对发射机测试的五大挑战任何无线系统的开发都是很艰巨的任务,会受到严格的限制,并且因为要做出许多权衡而变得更加复杂。要在市场上取得成功,必须不断地提升性能、降低成本和加快上市时间。不管是面向器件、子系统还是整个无线系统,您都会在 RF 测试中遇到非常棘手的难题。为此,本应用指南提供了针对性的解决方案旨在帮您应对以下五大挑战:挑战“1”1.1~确保符合复杂的标准和规范移动数据和语音业务都在持续要求更大的通道容量而无线局域网通常也是如此在开发商们推出各种技术以便满足这些需求的同时每种技术又给发射机测试带来了更多挑战在设置分析仪进行一致性测量时这也同样成为分析仪所面临的挑战!1.2~进行通用和专用标准的测量围绕主要的无线标准信号分析仪可以配备几十种不同的测量应用如下图示例界面:▲ 测量软件可以分屏显示多项测量,从而帮助用户更全面地了解信号质量和特性。在这个 LTE 测量界面中,包括了星座图、检测到的定位信息,帧报告以及总体误差报告。为了优化和便于故障排除,还对不同通道类型的测量结果设置了不同颜色。▲ 在对现代无线系统进行 ACPR/ACLR 测量时,具体设置非常复杂。图中使用了非连续载波聚合,在配置中包含累积 ACLR 时,复杂程度尤为明显。▲ 在这个 WLAN 信号的 OFDM EVM 多项测量显示图中,涵盖了四种迹线信息:EVM 与符号、EVM 与子载波、星座图以及EVM 表格指标在所有的分析仪上:◎  这些软件都采用了一致的、且经是德科技依照相关标准进行了验证的测量算法;◎  当标准出现修订和扩展之后,这些应用软件将会得到同步更新;◎  算法和应用界面都是共享的,因此用户很容易熟悉和上手,可以有效地减少培训和编程时间。挑战“2”对复杂信号进行全面、精确的射频功率测量在开...
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产品 Products
产品名称:

7710A BER测试仪

上市日期: 2016-04-18

- 210 Mbit/s are corresponded

  • 产品概述
  • 产品规格
  • 详细参数

7710A BER测试仪

 

 

This device is an error rate tester to measure bit error from
input data in the transport stream (TS) format.
This device consists of a transmission part (Transmit)
which generates data for the measurement and a receiver
part (Receiver) which measures the data.
A MPEG TS mode and a CONTINUANCE mode are
equipped. The error rate of the TS packet format of each
digital broadcasting can be measured at the MPEG TS mode
and the general error rate by the pseudo random signal can
be measured at the CONTINUANCE mode.

 

- The measurement data up to 210 Mbit/s are corresponded.
- When connecting to Eiden’s OFDM signal generator and
when using the PRBS data generated internally by this
device, the error rate measurement in the MPEG TS format
of the terrestrial digital broadcasting can be realized.
- When connecting to Eiden’s CMMB signal generator, the
error rate measurement for the CMMB data can be realized.
- This device consists of the transmission part which
generates the signal for the measurement and the receiver
part which receives the signal.
* The measurement data in both the MPEG TS packet
format and the PRBS data format can be supplied.
- Packet Error Rate (PER) can be measured.
- Erroneous Second Ratio (ESR) can be measured.
- Null packet filtering function is equipped.
- A GPIB interface and a ETHERNET interface are
equipped for the remote control.
- A touch panel of a seven inch TFT color crystal liquid
display is equipped. Therefore, an user interface having an
excellent operability is supplied.

 

 

t2.png

- MPEG TS mode and a CONTINUANCE mode

- 210 Mbit/s are corresponded

相关产品 / Products More
  • 发布时间: 2016 - 04 - 18
    7710A BER测试仪  This device is an error rate tester to measure bit error from input data in the transport stream (TS) format.This device consists of a transmission part (Transmit) which generates data for the measurement and a receiver part (Receiver) which measures the data.A MPEG TS mode and a CONTINUANCE mode are equipped. The error rate of the TS packet format of each digital broadcasting can be measured at the MPEG TS mode and the general error rate by the pseudo random signal can be measured at the CONTINUANCE mode. - The measurement data up to 210 Mbit/s are corresponded...
  • 发布时间: 2016 - 04 - 14
    7709A BER测试仪  This device is a bit error rate tester from the input in the TS (Transport Stream) format.When this device and Eiden’s Advanced BS Digital Signal Generator 3256A are combined, the bit error rate ofstream corresponding to the frame configuration based on ARIB STD-B44 2.0 Revised version (TransmissionSystem for Advanced Wideband Digital Satellite Broadcasting) can be measured.This device provides the environment that the bit error rate measurement against the complex frame configurationcan be measured easily.In addition, this device can measure the bit error rate of the T...
  • 发布时间: 2016 - 04 - 14
    7708A BER测试仪  This unit is error rate measuring device to measure bit error rate from TSpacket of various digital broadcasting.  ・Corresponding to measuring rate of max. 90Mbits/s.・Possible to measure SPI input or serial input.・For TS packet length of SPI input, 188bytes or 204bytes is recognizedautomatically.・By using built-in PRBS of Eiden’s OFDM Modulator “3511B”, BERmeasurement in OFDM demodulator, that has no output function for TSoutput per each layer, is possible.・Switching indication of various measurement information is possible.・Null packet filtering function is e...
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