The Rohde & Schwarz URE (342.1214.02) is a microprocessor-controlled True RMS voltmeter engineered for precise AC, DC, and AC+DC voltage measurements across RF and microwave testing environments. Built in Germany, this instrument delivers stable, traceable reference measurements with 0.5% basic error and automatic frequency response error correction, ensuring unmatched measuring accuracy across its operating range. The microprocessor enables real-time error correction, selectable readout units (V, mV, dBV, dBm, ΔV), and seamless integration into automatic test assemblies via optional IEC-bus interface.
Technical Specifications
• Measurement Functions: True RMS AC and AC+DC voltage; DC voltage; peak-value (positive, negative, peak-to-peak); frequency to 30 MHz
• Voltage Range: 50 µV to 300 V; output range −2 V to +2 V
• Frequency Range: DC, 10 Hz to 10 MHz (standard); DC, 10 Hz to 20 MHz; DC, 10 Hz to 25 MHz; DC, 0.02 Hz to 30 MHz (rear input)
• Measurement Speed: Greater than 30 measurements/s; fast mode available
• Input Impedance: 1 MΩ (standard); 1 MΩ with 40 pF; 100 Ω output impedance
• Accuracy: 0.5% basic error with automatic frequency response error correction
• Filters: Switchable low-pass filters at 4 kHz, 20 kHz, 100 kHz, and 1 MHz; high-pass and low-pass filter options
• Display: 4.5-digit LED display and 5-digit LCD display with units and analog tendency indication
• Operating Temperature: +5 °C to +45 °C
– Key Features
• Dual display: LED (4.5-digit) and LCD (5-digit) with quasi-analog light-point indication
• Automatic frequency response error correction for unmatched accuracy
• Switchable low-pass filter cutoff frequencies for noise and bandwidth control
• High measurement rate exceeding 30 measurements/s
• Selectable output units including dBm and dBV for RF applications
– Interfaces & Integration
• Optional IEC/IEEE bus interface for automated test assembly control
• In/Out option: dual-channel analog output, ready output, trigger input, TTL frequency counter input
• Compatible with commercial probes via 1 MΩ input impedance
– Typical Applications
• RF and microwave power and voltage measurement
• Calibration reference for test equipment
• Automated test system integration
• Frequency measurement and analysis to 30 MHz
