Abaco Systems / VMIC VME-1182A-020000 Digital Input Module

The Abaco Systems / VMIC VME-1182A-020000 is a 64-channel digital input module for VMEbus systems, delivering optically isolated signal acquisition with change-of-state detection, time tagging, and pulse accumulation. Built in VME 6U form factor, this module integrates into industrial and military I/O processing architectures requiring high-reliability event monitoring and data capture across multiple voltage standards.

Technical Specifications

• Channels: 64 input channels


• Isolation: Optically isolated inputs; 1500 VDC or 1100 VRMS channel-to-channel and channel-to-VME isolation


• Form Factor: VME 6U


• Data Transfer: 8, 16, or 32-bit widths


• I/O Voltage Range: 5 to 60 VDC, 110 VAC, 240 VAC (ordering options support 5 to 250 VDC or 4 to 240 VAC)


• Addressing: A24/A16 jumper-selected address space

Key Features

• Change-of-State Detection: Per-channel rising edge, falling edge, or both; software-selectable with channel masking capability


• Sequence of Events (SOE) Acquisition: Dual-buffer architecture for concurrent processing and loading; time-tagged COS events stored onboard with channel-by-channel monitoring


• Time Tagging: Relative timer values up to 65,535 ms with VME-accessible reset


• Pulse Accumulation: Per-channel event counting up to 65,535 pulses per channel


• Programmable Debounce: Software-controlled per-channel debounce from 1.25 ms to 1.024 s; 2 ms minimum pulse detection width; 4 ms minimum period for simultaneous rising/falling edge detection


• Input Configuration: Contact sensing or voltage sensing options available

Typical Applications Industrial automation, military systems, process control, event logging, and signal monitoring requiring opto-isolated multi-channel digital acquisition with timestamp correlation.

Compatibility & Integration Complies with VMEbus specification ANSI/IEEE STD 1014-1987, IEC 821, and IEC 297. Jumper-selected address modifiers support nonprivileged addressing modes.