Abaco Systems / VMIC VMIVME-2128-000 128-bit High-Voltage Digital Output Board with Built-In-Test

The Abaco Systems / VMIC VMIVME-2128-000 is a 128-channel high-voltage digital output board for VMEbus systems, delivering software-controlled sink outputs with integrated fault isolation and diagnostics. Each channel supports 5 to 48 VDC operation at 600 mA continuous sink current, with automatic surge protection and thermal shutdown safeguards. Built-in-Test (BIT) logic enables per-channel verification and fault isolation under program control, supported by a front-panel Fail LED that illuminates at power-up and extinguishes upon successful diagnostic completion.

Technical Specifications

• Output Channels: 128 digital outputs organized as sixteen 8-bit ports


• Output Type: High-voltage, high-current sink with open collector drivers


• Voltage Range: 5 to 48 VDC (absolute maximum 55 V)


• Sink Current: 600 mA per channel


• Surge Protection: Automatic shutdown with inrush tolerance to 990 mA before shutdown


• Thermal Protection: Integrated thermal shutdown


• Flyback Protection: Output clamp diodes


• Power Consumption: 3.0 A typical at 5 VDC (user-supplied load voltage separate)


• Data Polarity: Positive true (logic 1 activates output driver)


• Form Factor: Double Eurocard 6U, 160 mm × 233.35 mm


• Cooling: Forced air convection required


• Operating Altitude: Up to 10,000 ft

Key Features

• Built-in-Test logic for real-time channel verification


• Software-controlled fault isolation and diagnostics


• Sixteen addressable ports supporting 8/16/32-bit data transfers


• Twenty jumpers for base address selection


• One jumper for standard or short I/O access configuration


• Output sockets for user-supplied warming resistors


• Two 96-pin female connectors (P3, P4)

Compatibility & Integration Fully compliant with ANSI/IEEE STD 1014-1987 and IEC 821/297 VMEbus specifications. Supports A24:A16 addressing with D32/D16/D08 data transfer modes. Compatible with Intelligent I/O Controllers. Accepts IDC ribbon connectors (ERNI No. 913 031) or discrete wire termination via Harting mating connectors.