New AP Interface Allows Multichannel, Chip-Level Analysis

Created on 2008-11-11 15:48:00

Summary: APx Digital Serial I/O Option Enables Component-level Testing & Design

Electronica, Munich, November 11, 2008: AudioPrecision, the recognized standard in audio test and measurement, isintroducing a new digital serial I/O module for its respected range ofAPx audio analyzers. The multichannel APx Digital Serial I/O optionallows engineers to test audio devices at the level of individual IC’srather than being limited to evaluating only the external inputs andoutputs of a device. The digital serial option will be of particularinterest to HDMI chip developers. When used with AP’s existing HDMIinterface option, an APx analyzer — already the only product capablemeasuring audio embedded in HDMI — becomes a simple but unrivalled HDMIchip debugging tool.

Aside from its applications in HDMI chip design, the Digital Serialoption allows all normal audio measurements to be carried out on A/Dand D/A converters, codecs, DSP’s, and sample rate converters.  There’sbuilt-in support for the most widespread serial interface formats,including left justified, right justified, DSP and I2S, and theinterface can generate and measure up to eight audio channelssimultaneously using TDM or multiple data lines.  Other innovationsinclude independent input and output clocks, dedicated, bufferedoscilloscope monitors, and presets for testing popular audio devices.

“A multichannel world needs multichannel connectivity at everylevel,” says Tom Kite, Audio Precision’s Vice President of Engineering,“An engineer armed with an eight-channel APx585 and the Digital SerialI/O is ready for anything from the circuit board to the speakeroutputs.”