AP - The Recognized Standard In Audio Test

The APx Bluetooth® option is the best solution in the world for testing Bluetooth audio. No other analyzer combines integrated Bluetooth controls with APx’s best in class speed, ease-of-use and performance.

Today, engineers are limited to subjective listening tests, or to connection through components or systems that may subject the signal to unspecified and uncontrollable gain, distortion or sample rate conversion. APx’s built-in Bluetooth radio and Bluetooth stack allow engineers to measure their Bluetooth devices directly, eliminating the uncertainty and inconvenience of adapters and making Bluetooth audio test faster, easier and more reliable.

Integrated Bluetooth control for reliable wireless connectivity

With APx, all Bluetooth controls are integrated into the analyzer software. In addition to standard commands like pairing or opening a connection, it’s easy to switch between profiles and roles on the fly, specify a custom device class, connect with a preferred sample rate or codec, or force open a SCO without ringing. For deeper protocol analysis, a link key is available to cut and paste into a Bluetooth packet sniffer.

Comprehensive audio test from the recognized standard

Once connected, every audio characteristic can be measured. Key features include 30+ one-click audio measurements (including all standard weighting filters), one-million-point FFTs, real-time oscilloscope monitoring, custom reports, statistical calculations, and quasi-anechoic acoustic measurements. With 21 measurements in one second, the APx multitone analyzer is ideal for Bluetooth production test.

Isolation of audio stages

With APx, nearly any combination of input and output can be measured directly: Bluetooth, analog (2, 4, or 8 channels), AES3 or S/PDIF digital, I²S digital serial, and HDMI are all available.

Quasi-anechoic acoustic test

Most Bluetooth devices have Bluetooth at one end of the audio chain and a transducer at the other. APx’s Acoustic Response measurement makes 14 key acoustic measurements in 3 seconds and uses an energy time curve to find the ideal time gate quickly and easily.

Perceptual audio tests

APx facilitates perceptual audio testing by being able to play and record vocal reference .WAV files over Bluetooth. Because APx adds no vocal impairment of its own, it can serve as an ideal Bluetooth transmitter or receiver, allowing the device under test to be accurately assessed.

Recommended models

APx520: Handsfree & headsets APx’s quasi-anechoic acoustic measurements and built-in SCO and AVRCP commands are ideal for testing handsfree devices and wireless speakers.	APx525: Smartphones APx switches between A2DP and HFP seamlessly, and supports streaming over a SCO or .wav file playback for testing smartphones. APx525-DSIO-HDMI-BT features two channels of analog and digital, digital serial, HDMI, and Bluetooth I/O.
APx521: Automotive audio 4 channels of high performance analog with a 300 Vrms max input (bal), plus Bluetooth, makes the APx521-BT ideal for automotive head units.	APx585: A/V Receivers & Bluetooth chips Ultimate connectivity. Test Bluetooth-to-HDMI, Bluetooth-to-surround speaker outputs, Bluetooth-to-S/PDIF, Bluetooth-to-I2S. Ideal for multichannel receivers or Bluetooth chips.