GE VMIVME-3125 VMEbus Analog-to-Digital Converter Module

Description

Technical Specifications

Core Conversion & Inputs

• Resolution: 12-bit A/D converter with built-in track-and-hold
• Channels: 32 single-ended or 16 differential analog input channels
• Aggregate Conversion Rate: 40 kHz (continuous autoscanning across all channels)
• Input Ranges (Voltage): ±50 mV, ±500 mV, ±5 V, ±10 V, 0 to +10 V
• Input Ranges (Current): 0 to 25 mA (with external termination)
• Programmable Gain: Jumper-selectable gains: ×1, ×10, ×100
• Data Coding: Software-selectable: offset binary or two’s complement
• Input Protection: Overvoltage protection; pull-down resistors prevent floating inputs
• Input Filtering: On-board low-pass filters: 50 kHz (standard), 40 Hz (optional)

Isolation & Interface

• Isolation: 1,000 V analog ground to digital ground isolation; channel-to-bus isolation
• VMEbus Interface: VME Specification Rev. C.1 compliant; 32-bit data transfers; A24/A32 addressing
• Data Access: Dual-ported data registers for direct, low-latency access by the VMEbus host
• Connector: Front-panel 37-pin D-sub connector; compatible with discrete wires and ribbon cables

Physical & Electrical

• Form Factor: Single-slot 6U VMEbus Eurocard (233.35 mm × 160 mm × 4HP)
• Power Input: +5 VDC, ±12 VDC from VMEbus backplane
• Power Consumption: Max 10 W (typical)
• Weight: Approx. 0.5 kg
• Compliance: CE, FCC

Environmental Ratings

• Operating Temperature: 0°C to +60°C (commercial grade)
• Storage Temperature: -40°C to +85°C
• Relative Humidity: 5%–95% RH (non-condensing)
• Vibration: 5 g RMS (10–500 Hz)
• Shock: 30 g (11 ms half-sine)

Software & Compatibility

• Operating Systems: Windows NT/2000/XP, Linux®, VxWorks®, QNX®
• Board Support Packages (BSPs): Comprehensive BSPs for all supported OS
• Built-in Test (BIT): Real-time BIT functionality for continuous health monitoring
• Scanning Control: Automatic continuous scanning; halt-and-lock feature for single-channel sampling

Key Features

• High Channel Density: 32 single-ended or 16 differential inputs in a single VME slot
• Isolated Signal Paths: 1,000 V isolation eliminates ground loops and enhances noise immunity
• Autonomous Scanning: Continuous, hardware-driven data conversion without CPU intervention
• Flexible Signal Conditioning: Wide input ranges and programmable gain for diverse sensor types
• Robust Protection: Overvoltage protection and input filtering for reliable operation in harsh environments
• Low-Latency Data Access: Dual-ported registers enable fast, direct data transfer to the host system
• Built-in Diagnostics: Real-time BIT ensures module health and data integrity
• Legacy System Compatibility: Seamless integration with existing VMEbus infrastructure
• Versatile Connectivity: Standard D-sub connector supports both discrete and ribbon cable wiring

Application Scenarios

• Industrial Automation: Process monitoring, factory automation, and distributed control systems (DCS)
• Data Acquisition (DAQ): High-channel-count data logging, test benches, and environmental monitoring
• Test & Measurement: Automated test equipment (ATE), hardware-in-the-loop (HIL) simulators, and signal analysis
• Aerospace & Defense: Avionics test systems, ground support equipment, and sensor data acquisition
• Energy & Power: Power grid monitoring, turbine control, and renewable energy system instrumentation
• Transportation: Railway signaling, marine vessel monitoring, and heavy equipment telemetry
• Scientific Research: Laboratory data acquisition, experimental control, and physical parameter measurement
• Legacy System Maintenance: Upgrading and sustaining older VMEbus-based data acquisition platforms