U8903A Audio Analyzer

Data Sheets

Make an audible difference

Whether listening to mono, stereo or surround, the human ear knows what sounds good. Measuring “how good,” however, can be a challenge. Now, with a two-in-one digital audio interface card that provides AES3/SPDIF and Digital Serial Interface digital audio formats, Keysight Technologies, Inc. U8903A offers you the flexibility to measure and quantify both analog and digital audio performance in applications such as analog and digital IC components and module design, wireless audio and consumer audio.

The U8903A contains the full functions of analog domain and digital domain audio measurement in one box, allowing you to perform quick and convenient complex cross-domain measurements.

The U8903A audio analyzer combines the functionality of a distortion meter, SINAD meter, frequency counter, AC voltmeter, DC voltmeter and FFT analyzer with a low-distortion audio source. On the bench or in a test system, its accuracy and versatility helps you make an audible difference in your end product.

U8903A audio analyzer key features

Customize your unit with flexible digital audio interface options, offering AES3/SPDIF or DSI standard digital audio formats, or both in a convenient two-in-one card.

Test a variety of current components and applications with a logic level input range of 1.2 V to 3.3 V (DSI).

Analyze a wide range of applications with multiple DSI formats: I2S, Left Justified, Right Justified and DSP.

Select generator, analyzer, graph and sweep modes with one-button access.

Measure at DC and from 10 Hz to 100 kHz.

Characterize signal-to-noise ratios, SINAD, IMD, DFD, THD+N ratio, THD+N level, crosstalk and more.

Apply weighting functions, standard filters and custom filters.

Stimulate the device with high-quality signals and arbitrary waveforms.

View numerical and graphical displays of measurement results.

Connect to a PC through GPIB, LAN/LXI C and USB interfaces.

Eliminate the need to rewrite programs into SCPI command with the built-in HP 8903B code compatibility mode.

Expand Your Digital Audio Test Capabilities

Cover your application needs with multiple digital audio interface options

Test a wide range of applications with the digital audio industry’s standard interfaces: AES3/SPDIF and Digital Serial Interface (DSI). Used in the testing and validation of consumer electronics and digital audio related ICs, both digital audio interfaces are available with the U8903A Option 113, with further options (Option 114 and 115) giving you the flexibility to choose either interface.

The U8903A also supports multiple DSI formats, such as I²S, Left Justified, Right Justified and DSP. These formats are suitable for most digital audio design and verification applications.

Existing U8903A users can opt for a hardware upgrade to install the digital audio interfaces options. The hardware upgrade will include a digital audio card installation and calibration of your U8903A unit by Keysight’s Service Solution Unit (SSU). Contact your nearest authorized Keysight service support center for more information.

Measure more applications with a wide logic level input range

Most digital audio ICs are designed to work in battery-operated devices such as cellular/mobile phones and MP3 players, leading to a downward trend in the logic level of such ICs. With a wide logic level input range of 1.2 V to 3.3 V, the U8903A is able to support and test future designs in addition to the majority of current digital audio ICs.

Easily perform manual and automated tests

View up to four channels (two for analog, two for digital) simultaneously on the U8903A’s 5.7-inch color display. The display screen provides numeric readouts as well as graphical views, while one-button access makes it easy to select the four main operating modes: analyzer, generator, graph and sweep. In graph mode, choose between viewing in frequency domain or time domain.

The U8903A also supports modern SCPI commands, allowing users to easily program the audio analyzer for automated testing. Furthermore, the U8903A comes with a built-in code emulator for the legacy HP 8903B audio analyzer. The code emulator helps existing HP 8903B users to easily migrate from the old platform to the new U8903A audio analyzer without the need to rewrite all their HP 8903B programming codes.

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