Audio Precision Portable One Plus Audio Measurement System

The Audio Precision Portable One Plus is a compact, high-precision audio measurement system designed for audio testing, troubleshooting, and quality control in professional and consumer audio applications. Combining versatile analog and digital signal analysis with portability and ease of use, it is ideal for field engineers, production testing, and R&D laboratories.

Key Features:

• Wide Frequency Range: Covers 20 Hz to 80 kHz, suitable for comprehensive audio performance evaluation.
• Ultra-Low Distortion & Noise Measurements:
  • THD+N as low as 0.002%, ensuring high-fidelity audio analysis.
  • High dynamic range and signal-to-noise ratio (SNR) measurements.
• Built-in Signal Generator:
  • Generates sine, square, and sweep signals for detailed analysis.
  • Output level adjustable from 1 mV to 8V RMS.
• Fast & Accurate Measurements:
  • Total Harmonic Distortion + Noise (THD+N) analysis.
  • Frequency response and phase measurements.
  • Intermodulation Distortion (IMD) testing.
  • AC/DC voltage, gain, and crosstalk measurements.
• User-Friendly Interface:
  • High-resolution LCD display for real-time measurement viewing.
  • Intuitive front-panel controls for easy operation.
• Compact & Portable Design:
  • Lightweight and ideal for field testing and mobile applications.
  • Durable construction for laboratory and production environments.
• Multiple Connectivity Options:
  • Balanced and unbalanced inputs/outputs for versatile audio testing.
  • RS-232 and GPIB interfaces for automated testing and remote control.

Applications:

• Professional Audio Equipment Testing: Evaluates amplifiers, speakers, and microphones.
• Broadcast & Recording Industry: Ensures studio-quality audio performance.
• Consumer Electronics: Tests headphones, soundbars, and home audio systems.
• Automotive & Aviation Audio Systems: Validates sound quality and distortion levels.
• Telecommunications & VoIP: Measures voice clarity and signal integrity.

The Audio Precision Portable One Plus is a powerful and reliable audio measurement system, offering laboratory-grade accuracy in a portable form factor. It is an essential tool for engineers, technicians, and audio professionals who require fast, precise, and portable audio analysis.

Specifications

General Specifications

• Model: Audio Precision Portable One Plus
• Type: Audio Measurement System
• Measurement Domains: Analog
• User Interface: Front-panel controls & high-resolution LCD display
• Portability: Compact, lightweight design for field and lab use

Frequency & Performance

• Frequency Range: 20 Hz to 80 kHz
• Frequency Accuracy: ±0.002% of setting
• Residual Distortion (THD+N): ≤ 0.002% at 1 kHz, 2V RMS
• Dynamic Range: > 100 dB (typical)
• Signal-to-Noise Ratio (SNR): ≥ 90 dB
• Measurement Bandwidth: 10 Hz to 100 kHz

Audio Signal Generation

• Output Frequency Range: 20 Hz to 80 kHz
• Output Voltage: 1 mV to 8V RMS (adjustable)
• Output Impedance: 50Ω (unbalanced), 100Ω (balanced)
• Waveforms: Sine, square, sweep

Measurement Capabilities

• Total Harmonic Distortion + Noise (THD+N): Measures down to 0.002%
• AC & DC Voltage Measurement: 1 mV to 300V range
• Frequency Response Measurement: 20 Hz to 80 kHz with high accuracy
• Intermodulation Distortion (IMD): SMPTE & CCIF standards supported
• Crosstalk Measurement: Measures channel separation
• Gain & Attenuation Measurement: Analyzes system gain/loss
• Phase Measurement: Determines phase shift between channels

Connectivity & Remote Control

• Interfaces:
  • RS-232 serial port for external PC control
  • GPIB (IEEE-488) for automation
  • Balanced & unbalanced analog I/O connectors

Physical & Power

• Dimensions: Approx. 330 × 90 × 280 mm (W × H × D)
• Weight: Approx. 5 kg (11 lbs)
• Power Requirements:
  • Voltage: 100-240V AC
  • Frequency: 50/60 Hz
  • Power Consumption: Max 50W

Environmental & Durability

• Operating Temperature: 0°C to +45°C
• Storage Temperature: -20°C to +60°C
• Humidity Resistance: Up to 90% relative humidity (non-condensing)

Key Benefits

✅ Compact & Portable – Ideal for field testing and mobile applications
✅ Wide Frequency Range (20 Hz – 80 kHz) – Covers professional and consumer audio needs
✅ Low Distortion (≤ 0.002%) – Ensures high-fidelity audio analysis
✅ Comprehensive Measurement Suite – Includes THD, SNR, IMD, and frequency response analysis
✅ Automated Testing Capabilities – RS-232 and GPIB for production and R&D environments

The Audio Precision Portable One Plus is a powerful, versatile, and reliable audio measurement system, providing laboratory-grade accuracy in a compact form factor for engineers, technicians, and audio professionals.