劳斯莱斯公司，新的MA254是一个紧凑的D类立体声放大器，内置4声道立体声混音器。每通道5瓦，4欧姆或20W\/Ch，可选24V电源。D级低热设计使MA254能够安装在非常紧凑的应用场合。它可以在投影仪的天花板上工作，或者任何需要小型和无热放大的地方工作。MA254采用全金属底盘，重1磅。外形尺寸为6.75英寸X 3.5英寸X 1.5英寸。MA254有一个12伏交流电的外部电源。4声道混音部分包括4个独立的RCA立体声输入和一个3.5毫米（1/8英寸）立体声输入，非常适合ipod或笔记本电脑类型的输入

dScope系列III音频分析仪是一个工业强度音频测试和测量系统，包括一个Windows PC软件应用程序和一个用于被测设备（EUT）连接的外部高精度音频接口处理器。 dScope Series III体系结构充分利用了Windows平台不断增加的处理和多任务处理能力，允许系统同时测量许多参数，这意味着速度更快。外部接口处理器通过一个标准的USB连接连接到PC，使其易于与包括笔记本电脑在内的各种PC机一起使用。外部接口处理器包括精确的模拟和数字输出以及为测量应用而高度优化的输入。精确和自动增益范围允许高分辨率测量范围从几微伏到超过150伏均方根，从小于1赫兹到超过90千赫。dScope系列III接口处理器使用专用的DSP提供广泛的实时测量，dScope系列III软件使用主机PC进行几乎无限的数字处理和分析选项，例如快速傅立叶变换（FFT）、功率谱分析、扫频正弦和多音测试。dScope接口处理器还提供AES3和S\/PDIF数字音频载波的受控降级和分析。该软件还允许dScope使用已安装的Windows声音设备（如声卡或蓝牙音频耳机）作为发电机输出或使用WDM或ASIO驱动程序的分析仪源。这也使得dScope能够使用外部设备作为额外的输入或输出，或者测试这些输入或输出本身。 dScope系列III高度可编程-非常适合生产测试自动化和专业定制音频分析。它也可以使用ActiveX控件从广泛的第三方软件中实现自动化—使用dScope所能做的几乎任何事情都可以实现自动化和远程控制。此外，dScope系列III的丰富功能集意味着它可以完成许多传统仪器的工作，这反过来意味着节约成本，特别是在需要重新校准时！

High measurement speed, parallel signal processing in multichannel applications, and high reliability in continuous operation are vital requirements to be met by audio analyzers for use in production. If, on top of that, a cost-efficient instrument for system use is what you need, the solution is the R&S®UPP audio analyzer.","The R&S®UPV audio analyzer – the high-end instrument from Rohde & Schwarz – has held a solid position in all audio T&M applications for years. Measurement accuracy and dynamic range at the limits of what is possible, combined with unique measurement capabilities, make the R&S®UPV ideal primarily for research, development and quality assurance tasks.","Many audio applications do not place such high requirements on dynamic range and versatility. The emphasis in production is often on high throughput, and the cost of production test assemblies also plays a major role. When testing consumer audio equipment, multichannel devices of surround-sound systems must also be measured using state-of-the-art interfaces such as HDMI. This is where the R&S®UPP audio analyzer family comes into its own. Depending on the model, two, four or eight channels are processed in parallel; and by cascading multiple instruments, users can simultaneously trigger up to 48 measurement channels, which cuts down on measurement time.","The compact cost-efficient R&S®UPP audio analyzer is designed for system applications. It features low height, and comes without front-panel control elements or integrated display. The instrument can be remote-controlled via LAN, USB or IEC\/IEEE bus. In combination with an external monitor, mouse and keyboard, it becomes a manually operable measuring instrument for a lab bench. It has an integrated control PC, and the required software is already installed. Users can start taking measurements right away.","Featuring the same operating philosophy and remote control, the R&S®UPV and R&S®UPP audio analyzers are a strong team: They provide the optimal solution for both R & D and production, respectively, and harmonize well together, for example when instrument settings or measurement routines have to be exchanged.","Key Facts