The Rohde & Schwarz UPA is a precision audio analyzer and signal generator operating across 10 Hz to 100 kHz. It delivers RMS-level measurements from 10 µV to 300 V (unbalanced) with ±1% ±1 digit accuracy, signal-to-noise ratio analysis to 120 dB, and frequency counting to 250 kHz. The instrument provides phase measurement resolution of 0.1° and DC voltage measurement to ±300 V. Optional modules enable distortion analysis (THD/THD+N to the 9th harmonic order), wow-and-flutter measurement per DIN, CCIR, IEC, NAB, and JIS standards, and custom filter configurations. The generator option delivers crystal-accurate sine waves at ±0.01% frequency accuracy with selectable output impedance, while integrated high-pass and low-pass filters—plus optional CCIR and CCITT variants—support demanding audio characterization across production quality control and research environments.
Technical Specifications
Frequency Range: 10 Hz to 100 kHz
Level Measurement:
• Voltage range: 10 µV to 300 V (unbalanced); 10 µV to 35 V (balanced)
• Accuracy: ±1% ±1 digit (30 Hz to 20 kHz, RMS sine wave)
• Inherent noise: <10 µV (unbalanced, 600 Ω); 85 dB
DC Voltage Measurement: 0 to ±300 V; accuracy ±1% ±1 digit
Frequency Counter: 8 Hz to 250 kHz; ±0.005% ±1 digit accuracy; requires >10 mV input (S/N >20 dB)
Phase Measurement: 0 to 180°; 0.1° resolution
Generator (Option UPA-B6, standard in UPA3):
• Frequency range: 10 Hz to 100 kHz (110 kHz)
• Frequency accuracy: ±0.01%
• Low-distortion sine wave generation with high frequency and level resolution
• Switch-selectable output impedance
Distortion Meter (Option UPA-B8): THD/THD+N, selective harmonic distortion up to 9th order, even/odd harmonic analysis, SINAD
Wow and Flutter Meter (Option UPA-B9): Measurements to DIN, CCIR, IEC, NAB, JIS standards; amplitude variation metering
Filters: Integrated 22.4 Hz and 300 Hz high-pass; 22.4 Hz and 100 kHz low-pass; CCIR and CCITT filters. Optional special filters, custom filter boards, harmonics filters, and CD/DAT measurement filters available.
– Compatibility & Integration
Remote-control via IEC 625/IEEE 488 enables integration into automated production test environments.
