APx 520/521/525/526 Two and Four Channel Audio Analyzers

APx520/521/525/526 combines an award-winning user interface with AP’s legendary commitment to performance. APx is high speed, high performance, and user friendly. Innovations include one-click measurements, the automated measurement sequencer and continuous sweep technology that can derive 14 measurements in as few as 7 seconds.

APx offers fast, one-click measurements with on-screen results and graphic pass/fail limits indicators. Simple dialogs allow for easy configuration of filters and advanced settings. Repetitive bench tests across multiple signal paths can be automated with the measurement sequencer; level, scope, and FFT signal monitors can be pulled up for real-time analysis. APx can play custom waveforms (square waves, pink noise, etc.) and external source mode allows the testing of playback-only devices such as CD, DVD and MP3 players.

Downloads

• APx520/521/525/526 datasheet

The APx520 and APx525 are for both R&D engineers and production technicians who want fast and easy audio test, but who may not need the ultra-high performance of AP’s 2700 Series or require the simultaneous multiple channel capability of APx585 and APx586.

The APx521 and APx526 four channel analyzers are ideal for testing automotive audio systems, which typically have two analog inputs and four outputs. With a 192 kHz native sample rate, APx analyzers can generate and analyze signals with frequency content in the bandwidth from DC to over 90 kHz. Furthermore, APx analyzers have a generator buffer size of 32 mega-samples - enough to hold almost 3 minutes of waveform data sampled at 192 kHz. This makes APx a great choice for testing FM receivers with or without RDS. The ability to generate the composite FM signal delivered to an FM RF modulator, and analyze the received signal, is a tremendous advantage.

New breakthroughs allow APx to generate signals all the way down to 0.1 Hz. Maximum input voltage is rated at 300 Vrms (160 Vrms for unbalanced) and typical THD+N is −108 dB (at 1 kHz, 2.5 V). No other analyzer in the mid-range class offers this level of performance.

In addition to conventional balanced common mode rejection measurements, APx525 is also the only audio analyzer in the world to enable CMRR measurements in accordance with IEC60268 section 14.15.1.

All settings for a test are saved in a single project file that’s small enough to email, making it easy to replicate test setups between R&D and production facilities anywhere in the world. Project files are compatible with all APx instruments and each project is self-contained, so there’s never any worry about dependencies or broken links.

For customers, contract manufacturers or management, APx automatically generates rich graphic reports, with highlighted pass / fail limits and options to export as PDF, HTML, Excel or text.