The Millivac Instruments MV-912A is a precision AC voltmeter engineered for wide-band AC measurements from 5 Hz to 15 MHz. This average-responding instrument displays RMS values with exceptional sensitivity, resolving signals as low as 10 µV across a voltage span of 1 µV to 300 V. The 5.5″ taut-band galvanometer provides zero-suppressed display capability for accurate readings in both linear voltage and logarithmic dB scales, making it ideal for precision AC voltage and dB measurements in laboratory and field applications.
Technical Specifications
• Frequency Response: 5 Hz to 15 MHz
• Voltage Measuring Range: 1 µV to 300 V
• dB Measuring Range: −71 dB to +52 dB
• Resolution: 10 µV
• Basic Accuracy: ±0.5% F.S. ±2 digits (1 year, @ 400 Hz calibration frequency)
• Display: 5.5″ taut-band galvanometer
• Measurement Type: Average-responding, displaying RMS values calibrated to sine wave RMS
• Input Impedance: High impedance, low capacitance
• Input Connectors: Standard BNC type (optional binding post connectors available)
• Power Supply: 115 V AC or 230 V AC operation; battery operation up to 12 hours with internal rechargeable battery
• Weight: 9.52 lbs
• Cabinet Color: Millivac light blue
– Key Features
• Individual range full-scale calibration controls ensure measurement accuracy across all ranges
• Low internal noise and distortion with minimized offsets and thermal drift through precision component selection
• Adjustable DC output voltage proportional to indicator reading for external monitoring and recording
• Optional 100 kHz low-pass filter for noise suppression
• Multiple meter dial scale configurations available (linear dB with logarithmic voltage options)
• Rackmount version available (5.25″H × 19″W) for integration into standard 19″ racks
• Remote switching and programmable switching options via rear-mounted connectors
– Typical Applications
Precision AC voltage measurements in audio and RF testing, frequency response analysis, signal level monitoring, and dB-referenced measurements across instrumentation and telecommunications systems.
– Compatibility & Integration
Rear-panel-mounted input signal connector available in parallel to front panel connector. Optional 10:1 divider probe with 10 MΩ input impedance and <10 pF input capacitance extends measurement capability. Rackmount adapter frames support single or dual unit configurations.
