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B系列APx515是为生产测试而优化的性能音频分析仪。它是一流的仪器，将速度，性能，自动化，可靠性和易用性完美结合在一起。
B系列APx515可以在不到三秒钟的时间内完成所有关键音频测量。尽管价格低廉，APx515仍然具有出色的性能，典型的THD + N为–106 dB，120万点FFT和高达216k的数字I / O，以及一键式自动化和易用性所有APx B系列音频分析仪。与所有AP仪器一样，APx515具有ISO：17025认可的校准和三年保修，因此其结果在任何地方都值得信赖。
B系列APx515可以作为具有自己用户界面的独立测试单元运行，也可以由主.NET或LabVIEW应用程序进行控制。无论哪种情况，操作员都可以使用键盘，脚踏开关或条形码扫描仪控制APx515，或者该系统可以完全自动化。还支持切换器和外部设备，例如通过/失败灯。
多种同时输入类型
APx500软件版本6.0版为APx带来了多输入功能，允许工程师激活任何APx模块化音频分析仪或APx515分析仪上的第二种输入类型，并同时对模拟和数字信号进行测量。这项新功能与最高的通道数和最广泛的可用数字I / O相结合，为APx用户提供了至关重要的跨域洞察力，并提供了减少测试时间的机会。 观看多输入演示
转换功能
APx500软件版本5.0增加了测量电子音频和电声设备的传递函数的能力。传递函数测量可使用任何宽带信号为设备提供复杂的频率响应功能，包括幅度和相位（或实部和虚部）。此功能是对APx软件的“序列模式”的有力补充，它允许任何APx分析仪用作多通道动态信号分析仪或所谓的双通道FFT分析仪。有了传递功能和任何宽带信号，包括语音，音乐或噪声，APx用户现在就可以评估其设备或系统的复杂频率响应，相干性和脉冲响应。AP的传递功能可对多个采集进行无缝且重叠的分析。
开环线性调频
脉冲通过版本v4.6，APx500软件现在可以使用对数扫描的正弦（或线性调频）测试信号进行开环测量。该信号可在短时间内提供多个高分辨率结果，现在，APx用户可以在信号可能作为被测设备（DUT）或服务器上的文件起源或终止的测试场景中使用线性调频。连接到DUT。这项新功能对开发智能设备（例如，智能扬声器，智能手机）的人特别有用。在B系列APx515分析仪上使用开环线性调频功能需要至少一个软件选项或捆绑包，其中包含受支持的线性调频测量（例如，APX-SW-ACR，APX-SPK-RD）。
无代码自动化和完整的API
APx500测量软件是可用的最先进的音频测量接口。可以直接在GUI中创建包括用户提示，限制和对外部应用程序调用的复杂过程，从而节省了时间和金钱，同时确保了随着时间的推移轻松进行更新，因为不需要开发。
使用全面的APx API创建自定义界面和应用程序到应用程序的自动化。提供了有关Visual Basic.NET，C＃，MATLAB，LabVIEW和Python的大量文档和示例。项目和自动化可以与世界各地的其他APx单位共享。
通用软件平台
从实际角度看，APx音频分析仪使用通用软件平台，使测试和结果更易于共享。测试的所有设置都保存在一个项目文件中，从而可以轻松地在全球任何地方的R＆D和生产设施之间复制测试设置。项目文件与B系列和Legacy APx仪器兼容，并且每个项目都是独立的，因此不必担心依赖关系或断开的链接。用户甚至可以将波形文件和图像嵌入项目文件中。
为了与客户，合同制造商或管理人员共享测量结果，APx自动生成丰富的图形报告，并带有突出显示的通过/失败限制和选项，以导出为PDF，HTML，Excel，CSV，RTF或MATLAB文件。
数字协议分析
现代消费类设备（例如电视，蓝光播放器和接收器）通常使用数字接口（例如S / PDIF，Toslink，HDMI）来传输音频信号。除了数字音频数据外，这些接口还携带有关音频信号元数据的辅助信息。当从被测设备接收到元数据值时，APx元数据监视器会对其进行解码和显示。
B系列APx515标准测量 （“选项”选项卡或APx515 B系列数据表中列出了APx515可用的高级测量。）
•串扰
•直流电平
•直流电平扫描
•DUT延迟
•频率测量
•频率响应 •通道间
相位
•电平和增益
•电平比
•测量记录器
•噪声
•通过/失败
•Q峰噪声
•SINAD
•信号采集
•信号噪声比
•步进频率扫描
•步进电平扫描
•TEDS数据
•THD + N
•传递函数
The B Series APx515 is a performance audio analyzer optimized for production test. It is a best-in-class instrument, offering a powerful combination of speed, performance, automation, reliability and ease-of-use.
The B Series APx515 can make all key audio measurements in less than three seconds. Despite its low cost, APx515 still has excellent performance, with a typical THD+N of –106 dB, 1.2M point FFTs and up to 216k digital I/O, as well as the one-click automation and ease-of-use of all APx B Series audio analyzers. Like all AP instruments, APx515 comes with an ISO:17025 Accredited Calibration and three-year warranty, so its results are trusted everywhere.
The B Series APx515 operates either as a stand-alone test unit with its own user interface, or it can be controlled by a master .NET or LabVIEW application. In either case, an operator can control the APx515 with a keyboard, foot switch or barcode scanner, or the system can be totally automated. Switchers and external devices such as pass/fail lights are also supported.
Multiple Simultaneous Input Types
APx500 software release version 6.0 brings the multi-input capability to APx, allowing engineers to activate a second input type on any APx modular audio analyzer, or APx515 analyzer, and make measurements simultaneously on analog and digital signals. This new capability, paired with the highest channel count and widest range of digital I/O available, provides APx users critical cross-domain insight and the opportunity to reduce testing time. Watch a Multi-Input Demonstration
Transfer Function
APx500 software release 5.0 adds the ability to measure the transfer function of electronic audio and electroacoustic devices. The transfer function measurement provides the complex frequency response function for a device, including the magnitude and phase (or real and imaginary components), using any broadband signal. This feature, a powerful addition to APx software’s Sequence Mode, allows any APx analyzer to be used as a multichannel dynamic signal analyzer or as a so called dual-channel FFT analyzer. With transfer function and any broadband signal, including speech, music, or noise, APx users can now assess the complex frequency response, coherence, and impulse response of their device or system. AP’s transfer function provides gapless and overlapped analysis of multiple acquisitions. It also includes a ground-breaking signal-based triggering that eliminates the need for a pilot tone in open-loop test applications, making it ideal for test of “smart” audio devices.
Open-Loop Chirp
With release v4.6, APx500 software now enables open-loop measurements using the logarithmically-swept sine, or chirp, test signal. This signal provides multiple, high-resolution results in a brief period of time and now APx users can employ the chirp in test scenarios where the signal may originate, or terminate, as a file on the device under test (DUT) or on a server connected to the DUT. This new capability is especially helpful to those developing smart devices (e.g., smart speakers, smartphones). Use of the open-loop chirp capability with B Series APx515 analyzers requires at least one software option or bundle that contain a supported chirp measurement (e.g., APX-SW-ACR, APX-SPK-RD).
Code-Free Automation and a Complete API
APx500 Measurement Software is the most advanced audio measurement interface available. Complex procedures that include user prompts, limits, and calls to external applications can be created directly in the GUI, saving time and money while ensuring painless updates over time, as no development is required.
Create custom interfaces and application-to-application automation using the comprehensive APx API. Extensive documentation and examples are provided for Visual Basic.NET, C#, MATLAB, LabVIEW, and Python. Projects and automation can be shared with other APx units anywhere in the world.
Common Software Platform
From a practical perspective, APx audio analyzers use a common software platform, making tests and results easier to share. All settings for a test are saved in a single project file, making it easy to replicate test setups between R&D and production facilities anywhere in the world. Project files are compatible with both B Series and Legacy APx instruments and each project is self-contained, so there’s never any worry about dependencies or broken links. Users can even embed waveform files and images within a project file.
For sharing measurement results with customers, contract manufacturers or management, APx automatically generates rich graphic reports, with highlighted pass / fail limits and options to export as PDF, HTML, Excel, CSV, RTF or MATLAB files.
Digital Protocol Analysis
Modern consumer devices such as televisions, Blu-ray players, and receivers typically use a digital interface such as S/PDIF, Toslink, HDMI to transmit audio signals. In addition to the digital audio data, these interfaces also carry auxiliary information about the audio signal, metadata. The APx Metadata monitors decode and display metadata values as they are received from the device under test.
B Series APx515 Standard Measurements (Advanced measurements available for the APx515 are listed in the Options tab or the APx515 B Series data sheet.)
• Crosstalk
• DC Level
• DC Level Sweep
• DUT Delay
• Frequency Measurement
• Frequency Response
• Interchannel Phase
• Level & Gain
• Level Ratio
• Measurement Recorder
• Noise
• Pass / Fail
• Q-peak Noise
• SINAD
• Signal Acquisition
• Signal-to-Noise Ratio
• Stepped Frequency Sweep
• Stepped Level Sweep
• TEDS Data
• THD+N
• Transfer Function
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