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APx58x系列音频分析仪

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  •       APx585是一个真正的多通道音频分析仪,8通道同时模拟输出和输入。它是理想的设计和测试消费类设备如家庭影院接收器或专业调音台等设备。APx586添加第二个输入模块16 模拟通道。

          APx582提供相同的8通道的模拟输入APx582结合2通道的模拟输出。APx582包括AG52方波选件。

          所有型号都有192 k数字输入和输出通过AES /EBU,TOSLINK SPDIF。此外,I / O可以与可选的数字串行I2S,HDMI,PDM和蓝牙模块。

    The APx585 is a true multichannel audio analyzer, with 8 simultaneous analog outputs and inputs. It is ideal for designing and testing consumer devices such as home theatre receivers or pro devices such as mixing consoles. The APx586 adds a second input module for 16 simulaneous analog channels in.

    The APx582 offers the same 8 channels of analog input as the APx585 in combination with 2 channels of analog output. The APx582 includes the AG52 option for perfect square waves.

    All models have 192K digital inputs and outputs via AES/EBU, TOSLINK and SPDIF. Additionally, I/O may be expanded with optional Digital SerialHDMI with ARCPDM and Bluetooth modules.

    No other audio analyzer is faster or easier to use for multichannel audio.

    • Super fast testing of a wide range of multichannel devices

    • Measure one-to-many or many-to-one crosstalk & phase across all channels

    • Measure maximum power across all channels over time

    • Supports switchers for 192 maximum channel capacity

    Multichannel audio requires multichannel analysis

    A true multichannel analyzer allows not just faster testing, but also a complete picture of the performance of all of a device’s input and output channels simultaneously.

    Today, the majority of A/V receivers, disc players, TVs, PCs and automotive audio devices have more than two channels, from six channels (5.1) in surround sound applications to 16 or more channels in many cars. The conventional solution for testing multiple channels with a two channel analyzer has been to use switchers.

    Such an approach has two major problems. First, even when automated, switching between channels is slow. Second, because only one or two channels are being observed at a time, designers and manufacturers are often blind to interactions between channels. Problems which may go unobserved include output sag in channels during full power output tests as well as phase and crosstalk interactions, particularly the combinatorial complexity of all the output channels interacting with each other. 

    Multichannel Dolby / dts Confidence Testing

    APx585 has special tests to help you evaluate readiness for Dolby/dts certification quickly and easily before committing time and resources to the official certification procedure. APx configures itself for all the required tests in the Dolby or dts Certification Requirement using the Dolby Autotest 2.0 DVD or the dts test DVD. All you have to do is follow the on-screen prompts, then compare your results to the Certification Requirement. Results are ready for export in the format specified by Dolby or dts.

    The APx HDMI option (HDMI+ARC) for the APx555APx525 and APx585allows engineers to measure HDMI audio quality and audio format compatibility on devices such as surround sound receivers, set-top boxes, HD TVs, smartphones and tablets, and DVD or Blu-ray Disc™ players. Connections are provided for source and sink devices, as well as additional HDMI connections for auxiliary video input and a monitor output.

    Support for the Audio Return Channel (ARC), a part of the HDMI 1.4 spec, adds the ability to test both ARC audio quality and connectivity on receivers and TVs that support it.

    All standard audio measurements are available including level, SNR, distortion, phase, crosstalk, group delay, and others. The APx500 software is capable of taking 14 measurements in only 7 seconds, automatically generating a report of results, and saving all test settings in a single, sharable project file. Real-time signal monitors include residual THD+N in oscilloscope view and a 1.248M point FFT.

    Verifying Dolby & dts encoded audio

    In addition to generating linear / PCM audio streams, APx can stream lossless formats (such as Dolby TrueHD™ and dts-HD Master Audio™) and compressed formats (such as Dolby Digital™ and dts Digital Surround™) from pre-encoded audio test files.

    This feature makes it easy to troubleshoot component compatibility and downsampling / downmixing / transcoding issues.

    Streaming of .wav, .ac3, .dts, and .cpt over the SPDIF, TOSLINK, and AES/EBU digital outputs is also supported.

    HDMI ARC

    An additional set of HDMI connectors (also utilized for AUX In and Monitor Out) are provided for Audio Return Channel transmit and receive. In addition to full audio and metadata analysis capabilities, APx500 can send and receive CEC commands, allowing observation and troubleshooting of ARC connection negotiations. The regular HDMI connectors may also be used simultaneously, making it possible to send a test signal to a device over HDMI and to receive it back over ARC for analysis.

    Smartphones and tablets

    The APx520 with HDMI and Bluetooth, or the APx525 with DSIO, HDMI, and Bluetooth options are the perfect analyzer for testing every input and output on a smartphone or tablet. It provides two analog channels, which is all that’s needed for these devices, plus it supports up to eight channels across HDMI.

    Blu-ray audio

    Because Blu-ray and other disc players cannot accept an incoming audio stream, test signals must be played from disc. Every APx with the HDMI option includes a Blu-ray Disc with high-resolution versions of a wide selection of audio test signals.

    Viewing and editing HDMI E-EDID data

    An EDID is a ROM inside a piece of HDMI sink equipment such as a TV that informs the HDMI source of what audio and video formats the sink supports. For audio, that includes the number of channels, types of codecs, and sample rates.

    EDID must be set up correctly or the source may send formats that the sink can’t handle. If the sink doesn’t report its capabilities properly, the unit is likely to have interoperability problems.

    APx provides the ability to view and save the E-EDID of a device connected to the instrument’s source connector. In addition users can arbitrarily edit the E-EDID that the instrument’s HDMI sink presents to a source device under test.

    APx HDMI EDID configuration files 
    APx with HDMI supports multiple EDID configurations. These .edid files are pre-configured for various audio formats, including encoded audio such as DTS.  

    Video and third party support

    The APx HDMI option has a basic video generator. The user can generate a single color video test signal and control the resolution (up to 1080p), the color of the image, and the color depth (including deep color).

    Use of third party video pattern generators is supported by the “Pass External Video Through” option. When an external video signal is provided, APx combines it with the audio stream from the APx’s generator and outputs a single audio/video stream.

    The system also forwards E-EDID and CEC data transparently between the device under test and any device connected to AUX IN.

    The APx itself does not analyze video; however, all signals delivered to the sink are mirrored to the AUX OUT monitor connector. This allows the user to send the video signal to an external video analyzer or monitor the signal on a display.

    APX585 应用与DANTE 的测试。下面是部分测试框图




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