VMIC VMIVME-5530S Fiber Optic Slave Repeater Board

Module Feature

VMIVME-5530S is a single-slot 6U VMEbus fiber-optic slave repeater module developed by VMIC (GE Fanuc / Abaco Systems),the slave half of the 5530M/5530 master-slave fiber repeater pair,used to extend VMEbus across separate chassis via optical fiber. It supports full 32-bit DMA data transmission,compatible with D08/D16/D32 data transfer and A16/A24/A32 VME addressing. This module transparently forwards all VME IRQ 1-7 interrupt signals between two VME chassis without interrupt protocol modification. 62.5/125 µm multimode fiber medium supports maximum span of 100 m,propagation delay 400 ns base plus 4 ns/ft fiber length increment. Fiber galvanic isolation eliminates ground shift and EMI interference between racks,well suited for industrial sites with large ground potential difference. It works purely as VME slave for configuration and link status readback. Built-in BIT diagnostic monitors fiber link lock,signal amplitude and power rail health;front panel LED indicates link and fault status. Rugged Eurocard PCB with conformal coating,shock and vibration screened for power plant cabinet environment,widely used in gas/steam turbine multi-rack VME control interconnection,aerospace multi-chassis hardware-in-loop simulation and defense ground test bench.

Working principle

The matched VMIVME-5530M master board converts parallel VMEbus signals into optical signals and transmits to VMIVME-5530S over multimode fiber. Onboard optical receiver recovers clock and parallel data,restores original VME electrical signals and forwards to local VME backplane;VME interrupt lines are passed transparently through the fiber link. BIT circuit continuously detects optical signal presence and quality,records link loss events in status register for host software query. VME FPGA completes address decoding and bidirectional status register handshake with local VME backplane. Optical isolation barrier blocks common-mode surge and ground loop noise between remote chassis.

Onboard components

VME interface FPGA,32-bit parallel optical transceiver,clock & data recovery logic,transparent VME IRQ pass-through circuit,BIT link monitoring register bank,VME J1/J2 edge connector,front-panel duplex SC fiber connectors,multi-status LED array.

LED indicators

Front panel LED indicators for fiber link lock and module fault alarm.

Hardware self-diagnosis

Visual inspection of PCB,components and solder joints;board ID register readback verification;fiber loopback signal integrity test;VME A32 bus and interrupt pass-through verification.

Programming software

VMIC fiber repeater driver library and configuration utility,supports VxWorks,Linux and QNX real-time operating systems;software tool for link status polling and fault log retrieval.

Electrical & Process Parameters

Model: VMIVME-5530S Brand: VMIC Device type: 6U VMEbus fiber optic slave repeater module Bus standard: VMEbus, A16/A24/A32 addressing, D08/D16/D32,32-bit DMA,VME IRQ 1-7 transparent pass-through Fiber:62.5/125 µm multimode,SC duplex connector,max 100 m span Propagation Delay:400 ns base +4 ns/ft Control mode: VME slave access,transparent interrupt forwarding,fiber galvanic isolation,BIT real-time link monitoring,ESD protection Power supply: +5 V from VME backplane Power consumption:1 A typical @ +5 V Cooling: Convection cooling Protection: Fiber optical isolation,transient surge clamping,ESD protection Mounting: Standard single-height 6U VME front panel ejector locking Protection class: PCB with optional conformal coating

Mechanical & Structure

Mounting: Single-slot 6U VME Eurocard Protection class: PCB with optional conformal coating

Environmental

Operating temperature:0℃ ~ +70℃ Storage temperature:-40℃ ~ +85℃ Ambient humidity:20~80% non-condensing Certification: CE compliant Status: VMIC 6U VME fiber optic slave repeater board for cross-chassis VME extension

Installation

Follow ESD safety procedure before handling.Fully power off both VME chassis.Insert VMIVME-5530S into vacant 6U VME slot and lock front panel ejector latches.Connect duplex SC multimode fiber between VMIVME-5530M master and VMIVME-5530S slave unit.Power on chassis,load VMIC repeater driver,run BIT fiber link diagnostic and interrupt pass-through test before commissioning.

Interface

VME J1/J2 backplane connector,front-panel duplex SC fiber connector,interrupt and fault status register pins.

Diagnostic

Board undetected: poor VME backplane contact,damaged edge connector or incorrect address jumper setting. Fiber link loss: dirty fiber end face,wrong fiber type or optical transceiver hardware fault. Interrupt pass-through failure: fiber link instability or IRQ routing register misconfiguration. BIT fault triggered: abnormal +5 V power supply or clock recovery circuit damage.

Product Brief

VMIC VMIVME-5530S single height 6U VME fiber slave repeater board,works paired with 5530M master unit,32-bit DMA VME signal extension with transparent VME interrupt forwarding via multimode fiber,cross-chassis VMEbus interconnection for turbine distributed control and aerospace hardware-in-loop simulation systems.