The Measurement Computing/IOtech 652u is a 10-channel USB-based dynamic signal analyzer purpose-built for vibration analysis, acoustics, and dynamic measurement applications requiring high-resolution, phase-coherent data acquisition. Each channel features an independent 24-bit delta-sigma ADC with 108 dB typical spurious-free dynamic range and -100 dB typical total harmonic distortion, delivering exceptional signal fidelity across simultaneous measurements.
Technical Specifications
Analog Input Characteristics
• 10 channels with 24-bit delta-sigma conversion per channel
• Sample rate to 105,468 samples per second with ±50 ppm accuracy
• Input range ±40 V (±60 V maximum without damage)
• Input impedance: 800 kΩ || 120 pF (high to ground), 1 kΩ (low to ground), 801 kΩ (high to low)
• Software-selectable AC/DC coupling per channel
• Programmable high-pass filter at 0.1 Hz per channel
• Hardware 3-pole anti-aliasing filter at 360 kHz with software-selectable FIR filtering
• Channel-to-channel phase matching <0.12 degrees at 1 kHz
IEPE Sensor Integration
• 4 mA bias source per channel (channels 1–10) with 22 V compliance voltage
• Built-in fault detection: 20 V (open circuit)
Per-channel software fault indication and TEDS support.
Physical & Environmental
• Dimensions: 276.9 mm × 169.8 mm × 30.5 mm; weight 1.2 kg
• Operating temperature: −40°C to 60°C; humidity 0–95% RH non-condensing
• IP 40 ingress protection; IEC 60068-2-64 vibration, IEC 60068-2-27 shock rated
• 10-minute warm-up to rated specifications
Power & Interface
• External power supply 6.0–16 VDC, 3.5 W maximum draw (USB power insufficient)
• USB 2.0 connectivity
• 8 digital I/O channels (eZ-TOMAS software required)
– Key Features
• Independent 24-bit ADC per channel eliminates crosstalk
• Simultaneous multi-channel acquisition with tight phase coherence
• Configurable input coupling and filtering on a per-channel basis
• Integrated IEPE support with automatic fault detection
• Compact form factor for lab and field deployment
– Typical Applications
• Structural vibration and modal analysis
• Acoustic emission and environmental noise characterization
• Machine condition monitoring and predictive maintenance
• Transient and shock event capture
– Compatibility & Integration
Supported on Windows 2000, Windows XP, Windows Vista x86 (32-bit), Windows 7, 8.x, 10 (x64), and Windows Server 2008 R2, 2012, 2012 R2, 2016 (Home Editions excluded). Compatible with Vibrant Technology ME’scope for modal analysis and eZ-Series software packages.
