APx515B Series Audio Analyzer
Ideal for production test and entry-level R&D applicationsAPx515B Series Two-Channel Audio Analyzer
The APx515B Series 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. It 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 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
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.
APx500 software 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 capability is especially helpful to those developing smart devices (e.g., smart speakers, smartphones).
Use of the open-loop chirp capability with APx515 analyzers requires at least one software option or bundle that contain a supported chirp measurement (e.g., APX-SW-ACR, APX-SPK-RD).
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.
Common Software Platform
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.
APx515B Series Standard Measurements
(Advanced measurements available for the APx515 are listed in the Options tab or the APx515B Series datasheet.)
• DC Level
• DC Level Sweep
• DUT Delay
• Frequency Measurement
• Frequency Response
• Interchannel Phase
• Level & Gain
• Level Ratio
• Measurement Recorder
• Pass / Fail
• Q-peak Noise
• Signal Acquisition
• Signal-to-Noise Ratio
• Stepped Frequency Sweep
• Stepped Level Sweep
• TEDS Data
• Transfer Function
SPECIFICATIONS & REQUIREMENTS
- Residual THD+N (20kHz BW)
-102 DB +2.0 µV
Typical <-106 DB (1kHz, 20.V)
- Maximum Rated Input Voltage
- Maximum Bandwidth
- IMD Measurement Capability
SMPTE, MOD, DFD
- Amplitude Accuracy (1 kHz)
- Amplitude Flatness (10 Hz–20 kHz)
- Residual Input Noise (20 kHz BW)
- Individual Harmonic Analyzer
- Max FFT Length
- DC Voltage Measurement
- System performance is sensitive to processor speed; faster processors will yield faster results.
- APx500 is data intensive and it is recommended that other data-intensive applications not be run concurrently. This includes Audio Precision AP2700, APWIN or ATS.
- Sine Frequency Range
2.0 Hz to 80.1 kHz
- Frequency Accuracy
- IMD Test Signals
SMPTE, MOD, DFD
- Maximum Amplitude (balanced)
- Amplitude Accuracy
- Flatness (5 Hz–20 kHz)
- Analog Output Configurations
Unbalanced, balanced, common mode
- Digital Output Sampling Rate
27 kS/s to 200 kS/s
27 kS/s to 108 kS/s Optical
- Dolby / dts Generator
Yes (encoded file)
- Microsoft Windows 10 (64-bit) operating system
- USB 2.0 or USB 3.0 (two are required for optional switcher or DCX-127 use)
- Intel i5 or better processor running at a clock speed of at least 2.5 GHz (AMD processors with similar specifications are also supported)
- At least 8 GB RAM (16 GB is highly recommended)
- Internet connection or CD-ROM drive (to access APx500 software for installation)
- At least 1.5 GB of free hard disk space (an SSD for the operating system drive is recommended)
- A color monitor and video card with at least SXGA (1280 X 1024) video graphics support (video resolution of 1900 x 1080 or greater is recommended)
- More detailed information is available on our AP Software and Windows Compatibility chart