Keysight Technologies，Inc。宣布了U8903B性能音频分析仪，这是U8903A的下一代模型。U8903B具有可配置的选项，例如语音和语音质量测量，可扩展的带宽和数字音频接口，使工程师能够准确测试无线通信，组件和集成电路（IC）音频应用程序。
The U8903B offers the ITU-T standard perceptual objective listening quality assessment (POLQA) and its predecessor, perceptual evaluation of speech quality (PESQ), supporting measurements in the common audio bandwidth carried by telephone networks, and with POLQA, super-wideband speech signals up to 14000 Hz. With POLQA and PESQ, the U8903B is suited for testing 3G, 4G/LTE and voice-over-internet-protocol (VoIP) phone and network equipment as well as high-definition voice test applications.
For component and IC testing, the U8903B comes with a wide-bandwidth option, expanding the upper limit of the measurement bandwidth to 1.5 MHz with 24-bit resolution and one million point FFT. This expanded bandwidth allows the audio analyzer to maintain high accuracy, even when monitoring Class D amplifiers or switching supplies, which often produce signal spikes far outside the bandwidth limit of conventional audio analyzers (100 kHz or less). The U8903B also comes with AES3/ SPDIF and DSI formats to test and validate consumer electronics and digital audio ICs.
U8903B为测试工程师提供了选择两个，四个或八个通道的选择，并且可以通过改进的低剩余THD+N小于-110 dB进行准确的失真测量，这是所有八个通道可用的性能。测试序列控制功能通过允许用户设置测量类型并为每个测试参数定义通行/失败决策来自动测试。此新功能节省了时间，并消除了在产品开发过程中编写复杂代码的需求。
“The U8903B is accurate, configurable and feature-rich,” said Ee Huei Sin, vice president, Keysight’s General-Purpose Electronic Measurement Division. “With this audio analyzer, Keysight continues to provide high-performance tools to engineers and technicians.”
Keysight
www.keysight.com
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