The Analogic DVX-2502 is a multi-channel data acquisition and digitizer system built on a dual eurocard (6U) VXI size B form factor for single-slot VME chassis integration. It provides eight shielded differential inputs with voltage and current protection, expandable to 256 channels using Analogic DVX multiplexer boards. Signal conditioning flows through an instrumentation amplifier and programmable gain amplifier with four software-selectable gains into a high-resolution, fast-sampling analog-to-digital converter. A two-channel on-board DMA controller enables direct data transfers to system memory over the VMEbus, minimizing I/O overhead. The system complies with VME Specification Rev. C1 and VXI Specification Rev. 1.3.
Technical Specifications
• Form Factor: Dual eurocard (6U) VXI size B; single slot VME chassis compatibility
• Input Channels: 8 shielded differential inputs; expandable to 256 channels with multiplexer boards
• ADC Resolution: 14-bit or 16-bit variants available within DVX 25XX series
• Sampling Rate: Up to 1 MHz (DVX 25XX series)
• Signal Conditioning: Instrumentation amplifier with programmable gain amplifier featuring four software-selectable gains
• Data Transfer: 2-channel on-board DMA controller; direct VMEbus transfers to system memory
• Protection: Voltage and current protection on input channels
• VME Compatibility: Rev. C1 compliant
• VXI Compatibility: Rev. 1.3 compliant
– Key Features
• Front-end switching and settling times optimized for ADC performance
• Modular expansion capability through Analogic DVX multiplexer board integration
• Direct memory access reduces processor overhead during high-speed acquisition
• Software-configurable gain settings for diverse signal ranges
– Typical Applications
• High-speed multi-channel signal monitoring and data logging
• Research and industrial test systems requiring VME/VXI architecture
• Systems demanding synchronized acquisition across multiple channels
– Compatibility & Integration
The DVX-2502 integrates with EPICS 3.14 through dedicated driver components. VME configuration uses the command `dvx2502Config(ncards, base, memory, vector)` with parameters for module count, base address, memory allocation, and interrupt vector assignment.
