The Rohde & Schwarz UPL is a dual-channel audio analyzer delivering high-precision measurements across DC to 110 kHz. It combines signal generation, real-time analysis, and digital signal processing in a single instrument for R&D, quality control, and service applications. The UPL performs virtually all analog measurements—frequency response, spectral analysis, distortion characterization, and jitter assessment—with exceptional dynamic range and noise floor performance across both analog and digital interfaces.
Technical Specifications
Frequency Range: DC to 110 kHz (10 Hz or 20 Hz configurable)
Sampling Rate: 48 kHz
Frequency Accuracy: ±50 ppm
Dynamic Range:
• Digital: >135 dB
• Analog with notch filter: 120 dB (105 dB without filter)
• Analog 110 kHz mode with notch filter: 115 dB (85 dB without filter)
Noise Floor:
• Analog interfaces: <−140 dB
• Digital interfaces: <−160 dB
Distortion Performance:
• THD: −122 dB (0.00008%) at 1 kHz
• IMD: −103 dB (0.00071%)
• DFD: −132 dB (0.000025%)
Level Measurement Accuracy: ±0.05 dB RMS at 1 kHz
Frequency Response (relative to 1 kHz):
• 20 Hz to 22 kHz: ±0.03 dB
• 10 Hz to 20 Hz: ±0.1 dB
• 22 kHz to 50 kHz: ±0.1 dB
• 50 kHz to 110 kHz: ±0.2 dB
– Key Features
Signal Generation: 24-bit resolution sine, noise, and multi-sinewave signals up to 7400 frequencies with selectable amplitude distribution. Harmonics at −120 dB typical.
Analysis Capabilities: Dual-channel simultaneous measurements, FFT analysis (256 to 16k samples, zoom FFT to 0.05 Hz resolution), jitter measurement and resynchronization, phase difference analysis, pulse amplitude detection, common-mode signal analysis, and interface testing.
– Typical Applications
Audio equipment R&D, component characterization, manufacturing quality assurance, service diagnostics, and audio interface validation.
– Compatibility & Integration
Supports balanced and unbalanced analog inputs with digital audio interface testing. Real dual-channel architecture eliminates input switchover delays.
