Agilent HP 8903B 20 Hz-100 kHz Audio Analyzer

The Agilent HP 8903B Audio Analyzer is a high-precision audio measurement instrument designed for analyzing and testing audio signals across a frequency range of 20 Hz to 100 kHz. Known for its versatility, accuracy, and ease of use, the 8903B is widely used in audio research, manufacturing, and quality control applications.

Key Features:

• Wide Frequency Range: Covers 20 Hz to 100 kHz, making it suitable for a broad range of audio testing applications.
• Low Distortion & High Accuracy: Provides ultra-low total harmonic distortion (THD) measurements for high-fidelity audio analysis.
• Versatile Signal Generation & Analysis:
  • Generates sine waves, sweeps, and modulation signals for audio system testing.
  • Measures AC/DC voltage, frequency response, THD, signal-to-noise ratio (SNR), and intermodulation distortion (IMD).
• Automated & Manual Testing: Supports both standalone operation and automated testing via GPIB interface, allowing seamless integration into production environments.
• High-Resolution Display: Easy-to-read digital screen for clear and precise measurement readings.
• Built-in Low-Distortion Oscillator: Eliminates the need for an external signal generator, simplifying audio testing setups.
• Multiple Input & Output Options:
  • Supports balanced and unbalanced connections for compatibility with a variety of audio devices.
  • Selectable input impedance ensures flexibility in different testing environments.

Applications:

• Audio Equipment Testing: Evaluates the performance of amplifiers, speakers, microphones, and audio processors.
• Broadcast & Recording Industry: Ensures high-fidelity audio quality in radio, television, and music production.
• Telecommunications & VoIP: Tests audio clarity and distortion in telephone systems and voice communication devices.
• Automotive Audio Systems: Verifies the performance of car audio components and in-car entertainment systems.

The Agilent HP 8903B Audio Analyzer is a trusted industry-standard tool for high-precision audio testing, offering low-distortion measurements, advanced signal analysis, and flexible connectivity options. Whether for R&D, production, or quality assurance, the 8903B provides accurate and reliable audio performance evaluation.

Specifications

General Specifications

• Model: HP 8903B
• Type: Audio Analyzer
• Display: Digital display with measurement readout
• User Interface: Keypad-controlled with menu-driven operation

Frequency & Performance

• Frequency Range: 20 Hz to 100 kHz
• Frequency Accuracy: ±0.2% of frequency setting
• Measurement Bandwidth: 10 Hz to 250 kHz
• Residual Distortion (THD+N): ≤ 0.002% (typical at 1 kHz, 1V input)
• Dynamic Range: Greater than 80 dB
• Signal-to-Noise Ratio (SNR): ≥ 90 dB

Audio Signal Generation

• Output Frequency Range: 20 Hz to 100 kHz
• Output Voltage: 0 to 3V RMS (unbalanced), 0 to 6V RMS (balanced)
• Output Impedance: 50Ω (unbalanced), 100Ω (balanced)
• Waveforms: Sine wave, sweep function

Measurement Capabilities

• Total Harmonic Distortion + Noise (THD+N): Measures down to 0.002%
• AC & DC Voltage Measurement: 1 mV to 300V range
• Frequency Measurement: 20 Hz to 100 kHz with 0.01 Hz resolution
• Intermodulation Distortion (IMD): Measures SMPTE and CCIF standards
• Signal-to-Noise Ratio (SNR): Measures noise level in dB
• Gain & Attenuation Measurement: Measures audio system gain/loss

Connectivity & Remote Control

• Interfaces:
  • GPIB (IEEE-488) for remote control and automation
  • Analog input/output (balanced & unbalanced)
• Data Storage & Transfer:
  • Internal memory for test settings and results
  • External PC connectivity via GPIB

Physical & Power

• Dimensions: Approx. 425 × 177 × 365 mm (W × H × D)
• Weight: Approx. 9 kg (20 lbs)
• Power Requirements:
  • Voltage: 100-240V AC
  • Frequency: 50/60 Hz
  • Power Consumption: Approx. 75W

Environmental & Durability

• Operating Temperature: 0°C to +55°C
• Storage Temperature: -40°C to +70°C
• Humidity Resistance: Up to 95% relative humidity

Key Benefits

✅ Low Distortion Measurements (≤ 0.002%) – Ensures accurate audio performance testing
✅ Integrated Signal Generator – No need for an external function generator
✅ Comprehensive Audio Testing – Supports THD, SNR, IMD, and frequency response
✅ Automated Testing Capabilities – GPIB interface for remote control and production testing

The Agilent HP 8903B Audio Analyzer is a powerful and precise tool for audio equipment testing, research, and production, providing reliable performance and accurate signal analysis for audio engineers and technicians.