The Murata/Datel DVME-601B is an intelligent A/D co-processor board for VMEbus systems that enables simultaneous high-speed analog data acquisition independent of the host processor. Built around a 68010-based microcomputer, the board automatically collects A/D scans and interrupts the VME host when data is ready, preventing acquisition tasks from blocking host software execution. This architecture makes it ideal for demanding real-time applications where continuous data collection must occur without impacting system responsiveness.
Technical Specifications
Processing & Conversion:
• 68010-based single-board microcomputer core
• 12 to 16-bit pluggable A/D converter modules
• 12-bit conversion speed down to 2 microseconds
• Single-channel fast-throughput mode exceeding 250,000 samples per second to memory (12-bit, gain=1)
Analog Input Stage:
• 16 single-ended or 8 differential local channels
• Expandable to 256 total channels using Datel slave MUX boards
• User-resistor programmable instrumentation amplifier with gains up to 1000
Host Interface:
• 64 Kb dual-ported RAM (DPR) for command, parameter, control/status, and A/D data exchange
• Maskable interrupt generation to VMEbus upon scan completion or local program command
Conversion Triggering:
A/D conversion initiated by external trigger, internal programmable timer, local program execution, or host command.
– Key Features
• Independent 68010 processor eliminates host CPU bottlenecks during data acquisition
• Pluggable converter modules support multiple resolution and speed combinations
• Programmable gain instrumentation amplifier reduces external conditioning circuits
• Channel expansion capability via slave multiplexer boards
• Dual-ported RAM interface enables asynchronous host-to-processor communication
– Typical Applications
High-speed process control loops, analytical instruments, research laboratories, vehicular data recorders, ATE equipment, communications testers, and Digital Signal Processing applications including acoustics, sonar, high-speed mapping, seismology, medical imaging, graphics, array processing, FFTs, and waveform analysis.
– Compatibility & Integration
VMEbus standard form factor. Designed for integration with real-time operating systems and busy VME host environments.
