VMIC VMIVME-5532S Fiber Optic Repeater Link

Module Feature

VMIC VMIVME-5532S is a 6U double-height VMEbus fiber optic repeater link board. It connects separate VME chassis through multimode optical fiber, extending VME bus signals with complete electrical isolation between chassis to suppress ground loop noise. It supports automatic link establishment when VME master accesses remote slave chassis, and allows local VME master operation inside slave chassis for multi-master architecture. Supports burst transfer mode, transparent to host software, no major application code modification required. Rugged board design for aerospace, industrial distributed VME control and test systems.

Working principle

The module converts parallel VME bus signals into serial optical signals for transmission over fiber. The paired VMIVME-5532 board on the remote chassis recovers the serial optical data and reconstructs the original VME bus signals. VME read/write cycles initiated from master chassis are transparently forwarded to remote I/O modules in slave chassis. Optical isolation eliminates ground potential difference interference between different chassis. Hardware logic handles bus arbitration, data handshake and link status detection automatically.

Onboard components

VME bus transceiver chip, optical serial transmitter/receiver, link control FPGA, status register circuit, front panel fiber connector, link status LED array, configuration jumpers.

LED indicators

Front panel LED indicators for power, optical link ready, transmit activity, receive activity and link fault.

Hardware self-diagnosis

Visual inspection of PCB, front panel, fiber connector and soldering joints; VME register readback for board ID and firmware version; optical link loopback test; VME burst transfer test; interrupt handshake verification.

Programming software

VMIC VME device driver library, board configuration utility for link parameter setup, compatible with VxWorks, Linux and Windows embedded real-time operating systems.

Electrical & Process Parameters

Model: VMIVME-5532S Device type: 6U VMEbus fiber optic repeater link module Bus standard: VMEbus Transmission medium: Multimode fiber Max fiber distance: 2000 m Control mode: Transparent VME bus forwarding, auto link setup Power supply: +5 V from VME backplane Typical current: 2 A, max 2.5 A Cooling: Forced air convection cooling Protection: Over current, ESD protection, electrical isolation Mounting: 6U VME front panel locking Protection class: Conformal coating optional

Mechanical & Structure

Mounting: Standard 6U double height VME single slot board Protection class: PCB with optional conformal coating

Environmental

Operating temperature: 0℃ ~ +65℃ Storage temperature: -20℃ ~ +85℃ Ambient humidity: 20~80% non-condensing Certification: CE compliant Status: VMIC VME fiber optic repeater link board

Installation

Follow ESD safety procedure before handling. Power off all VME chassis fully. Insert paired VMIVME-5532S boards into master and slave VME slots and lock front panel ejectors. Connect multimode fiber cable between front panel optical ports. Set hardware jumpers for chassis master/slave mode. Power on chassis, load VMIC driver and run link communication test before formal operation.

Interface

VME J1/J2 backplane connector, multimode fiber optical port, status signal pins.

Diagnostic

No optical link: fiber cable damaged, wrong fiber type, dirty connector, power fault. VME access timeout: incorrect master/slave jumper setting, VME termination error, bus arbitration conflict. Burst transfer abnormal: poor backplane contact, firmware mismatch, temperature out of range. LED fault alarm: FPGA or optical transceiver hardware failure.

Product Brief

VMIVME-5532S VMIC 6U VME fiber optic repeater link board,transparent VME bus extension via multimode fiber,full electrical isolation for distributed multi-chassis VME control and aerospace test systems.