Keysight U8903B/DGT/STD Audio Analyzer

Overview

The Keysight U8903B/DGT/STD is a next-generation audio analyzer that combines high-performance analog measurement with digital audio interface capability. It features extremely low residual distortion and provides comprehensive measurement functions for audio devices, including support for Bluetooth audio testing and advanced voice quality assessment.

Key Features

• Configurable to 2, 4, 6, or 8 analog analyzer channels
• Digital audio interface card (DGT) with AES3, SPDIF support
• Low residual distortion below –110 dB for ultra-low distortion measurement
• Wide measurement bandwidth from 10 Hz to 96 kHz (extendable to 1.5 MHz with option N3431A)
• Real-time simultaneous measurement across all channels
• Perceptual Objective Listening Quality Assessment (POLQA) for voice quality testing per ITU-T P.863
• Programmable filters with MATLAB integration for custom filter creation
• Multiple measurement parameters: S/N ratios, SINAD, IMD, DFD, THD+N, crosstalk
• Test sequence automation and control
• Dual-display zoom function for detailed signal analysis
• GPIB, LAN/LXI, and USB interfaces
• HP 8903B legacy mode support for transition compatibility
• Three-year warranty

Applications

• Consumer audio device research, development, and production testing
• Automotive audio system characterization
• Wireless and Bluetooth audio testing
• Class-D amplifier measurement without external filters
• Voice quality assessment for communication systems