Abaco Systems / VMIC VMIVME-3122-100 High-Performance 16-Bit Analog-to-Digital Converter (ADC)

This VMEbus ADC module delivers 64 differential or single-ended analog input channels with 16-bit resolution, scaling from single-channel precision measurements to full 64-channel data acquisition arrays. The VMIVME-3122-100 achieves 100 kHz maximum conversion rates while supporting programmable channel configurations of 1, 8, 16, 32, 48, or 64 channels per scan cycle.

Technical Specifications

Resolution: 16-bit analog-to-digital conversion

Input channels: 64 differential or single-ended configurations

Maximum conversion rate: 100 kHz aggregate throughput

Input voltage ranges: ±2.5V, ±5V, ±10V, 0 to +5V, 0 to +10V

Programmable gains: ×1 or ×10 per channel

Input bandwidth: 5 kHz standard performance, 40 kHz option

Common-mode protection: 22MΩ ground-referenced inputs on variant

Multi-board synchronization: Up to 16 modules for 1,024 simultaneous channels

VMEbus interface: Standard A16/A24/A32 address spaces

Operating temperature: Industrial temperature range

Key Features Dual-ported memory architecture eliminates VMEbus bottlenecks during continuous acquisition by allowing simultaneous data collection and host readout. Programmable scan sequences optimize throughput for sparse channel monitoring versus full-array sampling. On-board timing generators provide precise sample intervals without external clock dependencies, critical for synchronized multi-channel phase measurements. External trigger inputs enable event-driven data capture for transient analysis applications. Hardware-synchronized multi-board operation maintains sub-microsecond timing accuracy across distributed sensor arrays.

Typical Applications Automated test equipment requiring MIL-STD-461 EMI compliance verification across multiple frequency bands simultaneously. Industrial process control systems monitoring temperature, pressure, and flow sensors per IEC 61131-2 programmable controller standards. Vibration analysis systems capturing accelerometer data for ISO 10816 machinery condition monitoring. Scientific instrumentation digitizing sensor arrays for IEEE 1451.4 transducer electronic data sheet compatibility. Power quality monitoring installations measuring voltage and current waveforms per IEC 61000-4-30 Class A requirements.

Compatibility & Integration Direct interface compatibility with VMIC signal conditioning modules eliminates external amplification requirements for thermocouple, RTD, and strain gauge inputs. VME64 mechanical specification ensures proper cooling airflow in 6U card cages. Software drivers support VxWorks, QNX, and Linux real-time operating systems for deterministic data acquisition timing. SCPI command compatibility simplifies integration with existing LabVIEW and MATLAB measurement frameworks. Front-panel LED diagnostics provide real-time acquisition status without software polling overhead.