The Rohde & Schwarz UPL16 (1078.2008.16) is a high-performance audio analyzer engineered for precise analog and digital audio measurements across research, development, and quality control environments. It delivers real dual-channel measurements without input switching, comprehensive distortion analysis, and advanced jitter characterization on digital audio signals.
Technical Specifications
Frequency range extends from DC to 110 kHz with selectable word length between 8 and 24 bits for analog interfaces. FFT analysis achieves maximum frequency resolution of 0.05 Hz. Accuracy at 1 kHz is ±0.05 dB. The spectrum display noise floor drops below −140 dB for analog interfaces and below −160 dB for digital interfaces. All measurements employ digital signal processing with elaborate preprocessing applied to analog signals before digitization.
Analog sinewave generation produces harmonics typically at −120 dB. The signal generator supports sinewave, noise, and multisinewave signals comprising up to 7400 frequencies, plus Sine2 burst generation.
– Key Features
• Dual-channel real-time measurement without input switching
• Frequency response characterization and externally controlled swept measurements
• THD+N and SNR measurements with high spectral purity
• 3rd order difference frequency distortion determination
• Jitter measurement and resynchronization via jitter-free clock signal on digital audio
• Spectral display of demodulated wow and flutter signals
• Crosstalk measurements
• Time-domain waveform display
– Interfaces
Analog connections use balanced XLR test inputs; unbalanced BNC cables connect via adapter (UPL-Z1). Digital Audio Interface (DAI) employs a 25-pole DSUB male rear panel connector per 3GPP TS 44.014, supporting 13-bit linear PCM or A-Law codec. Logic input operates at TTL; logic output specifies Low 3.5 V. Remote control interfaces via RS-232-C or IEC625/11.10.
– Typical Applications
GSM mobile conformance testing via integrated DAI. Audio device characterization in development labs. Quality assurance measurements for analog and digital audio systems.
