Abaco Systems / VMIC VMIVME-Repeat M Master Repeater Link Module

The Abaco Systems/VMIC VMIVME-Repeat M is a master repeater link module that extends VMEbus system reach by repeating VMEbus P1 and P2 signals between geographically separated master and slave chassis. This double height Eurocard (6U) module enables reliable long-distance communication across VMEbus segments, supporting link cable lengths up to 50 feet while maintaining signal integrity and system performance in demanding industrial environments.

Technical Specifications

• Bus Architecture: Extends VMEbus P1 and P2 signals between master and slave chassis


• Addressing Schemes: Supports 16-, 24-, and 32-bit addressing


• Data Transfers: Capable of 8-, 16-, and 32-bit VMEbus data transfers


• Cable Length: Up to 50 feet


• Propagation Delay: Approximately 150 ns


• Interrupt Support: All seven VMEbus interrupt levels


• Form Factor: Double height Eurocard (6U); 160 × 233.35 mm


• I/O Connectors: DIN-type


• Maximum Weight: 0.7 kg


• Operating Temperature: 0 to +65 °C

Key Features

• Master module functions as a VMEbus slave device in the master chassis, relaying read/write accesses across the link


• Slave module acts as a bus master in the slave chassis, receiving VMEbus information over the link


• Data Transfer Acknowledge (DTACK) returned to complete cycles when slave boards respond


• Software transparent operation when repeater link registers are disabled - no special software initialization required


• Supports star configuration for expansion to multiple slave chassis


• SYSRESET* propagation from master to slave chassis on power-up or reset event


• Part of a two-board set (master and slave modules)

Typical Applications

• Extending VMEbus architectures across distributed industrial environments


• Interconnecting separate VMEbus chassis requiring long-distance signal transmission


• Supporting slave-only VMEbus configurations

Compatibility & Integration

• VMEbus Specification Rev. C.1 compliant


• Designed for interconnection with corresponding VMIVME-Repeat S slave module


• Compatible with VMEbus master and slave boards across extended chassis separation