The Acromag AVME9510-i is a multifunction analog and digital I/O board for VMEbus systems, combining analog input, analog output, and digital I/O on a single card. The -i suffix denotes optocoupler isolation of field I/O from the VMEbus, mitigating ground loops and transient signal effects. It supports 16 differential or 32 single-ended analog inputs with 12-bit resolution, two analog outputs, and 32 bidirectional digital I/O points—ideal for data acquisition and control applications in space-constrained VME environments.
Technical Specifications
Analog Input
• 16 differential or 32 single-ended channels
• 12-bit A/D resolution
• Input ranges: 0–10V unipolar; ±5V, ±10V bipolar
• Programmable gain: 1, 2, 4, 8
• Conversion rate: 32 µS per channel
• Maximum throughput: 31.25 kHz (single channel); 1 kHz (32 channels)
• System accuracy: 0.04% of FSR
• Input overvoltage protection: ±32V continuous
• CMRR and channel-to-channel rejection: 71 dB
• RFI resistance: <0.25% of FSR @ 10 V/m (27, 151, 467 MHz)
• Gain and offset temperature coefficients: 50 ppm/°C, 24 ppm/°C maximum
Analog Output
• 2 channels, non-isolated voltage output
• 12-bit D/A resolution
• Output ranges: ±2.5V, ±5V, ±10V, 0–5V, 0–10V
• System accuracy: 0.025% of FSR
• Settling time: 6 µS to 0.01% of FSR for 20V step
• Continuous short-circuit protection
Digital I/O
• 32 bidirectional I/O points configured as four 8-bit ports
VMEbus & Isolation
• VME64 compliance (C.1, October 1985; IEC 821–1987)
• A24/A16:D16/D08 DTB slave with Read-Modify-Write support
• Address modifiers: 29H, 2DH, 39H, 3DH
• 1 kbyte memory map; jumper-configurable base address
• Field I/O isolation: 250V AC / 354V DC continuous; 1500V AC surge withstand (60 s)
– Key Features
• High-resolution 12-bit A/D and D/A converters
• Optocoupler isolation eliminates ground loops and protects against transients
• Flexible analog input configurations support differential or single-ended measurement
• Fast conversion rate and high throughput for real-time acquisition
• Programmable gain simplifies signal conditioning
• Monotonic D/A outputs with tight settling time
• Overvoltage protection on analog inputs
– Typical Applications
• Industrial data acquisition on VMEbus systems
• Process control and monitoring
• Test and measurement systems requiring mixed-signal I/O
• Equipment where electrical isolation is critical
– Compatibility & Integration
Manufactured in the USA by Acromag, Inc. Supports standard and short address space configurations in VMEbus crates with memory space allocation from 1 MB to 8 MB per IP module in carrier boards.
