VMIC VMIVME-5532M Fiber Optic VME Repeater Master Module

Module Feature

VMIVME-5532M is a double-slot 6U VMEbus fiber optic repeater master module developed by VMIC, it is the master card of VMIVME-5532L repeater link system and must work in conjunction with VMIVME-5532S slave board. It extends VME bus signals from master chassis to remote slave chassis over fiber, enabling VME master CPU in main crate to directly access all VME slave I/O modules installed on remote chassis. VME bus interface supports A16/A24 addressing and D08/D16/D32 data transfer, can operate as VME master or slave. ST multimode fiber interface, adopts 62.5 μm multimode fiber, maximum transmission distance up to 2000 m. The link is fully software-transparent; no special driver modification required for remote VME I/O boards. Multi-host register function is available for complex multi-chassis architecture. Built-in BIT diagnostic continuously monitors fiber signal lock, optical receive power and onboard power supply, latches fault alarm and drives front panel LED indicators. Rugged double Eurocard PCB with conformal coating,shock and vibration screened for power plant cabinet environment,widely used in gas/steam turbine distributed control,hardware-in-loop real-time simulation,aerospace test and long-distance multi-chassis VME control chassis.

Working principle

VME master bus transactions from main chassis enter VMIVME-5532M. The onboard FPGA captures VME bus signals, serializes data and clock, converts electrical signal to optical signal and transmits to VMIVME-5532S slave card via ST fiber. The slave module recovers clock and data, regenerates standard VME bus signals to drive remote backplane. Response data from remote I/O travels back over fiber to master board and returns to local VME master. All signal conversion is implemented by dedicated hardware and invisible to application software. BIT circuit detects optical power loss and signal desynchronization to judge link health. VME FPGA completes bus arbitration, address decoding and bidirectional data handshake.

Onboard components

VME interface FPGA,serializer/deserializer chip,ST duplex fiber transceiver,clock & data recovery circuit,multi-host register bank,BIT optical power monitoring circuit,VME J1/J2 edge connector,front-panel ST fiber port,multi-status LED array.

LED indicators

Front panel LED indicators for board +5 V power,fiber signal lock,link activity and communication fault alarm.

Hardware self-diagnosis

Visual inspection of PCB,components and solder joints;board ID register readback verification;optical power level measurement;fiber link continuity test;transparent VME PIO read/write throughput test;VME A16/A24 communication verification.

Programming software

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

Electrical & Process Parameters

Model: VMIVME-5532M Brand: VMIC Device type: Double-slot 6U VMEbus fiber optic repeater master module Bus standard: VMEbus, A16/A24 addressing, D08/D16/D32 transfer Fiber interface: ST multimode fiber Fiber specification: 62.5 μm multimode fiber,max distance up to 2000 m Function: Main chassis VME bus master extension,software transparent link,multi-host register option Control mode: VME master / slave operation,hardware signal serialization & regeneration,BIT built-in self-test,optical power monitoring Power supply: +5 V from VME backplane,typical 2 A,max 2.5 A Cooling: Forced air cooling Protection: Optical over-power protection,ESD protection,overcurrent protection Mounting: Double-height 6U VME front panel ejector locking Protection class: PCB with optional conformal coating

Mechanical & Structure

Mounting: Double-slot 6U VME Eurocard 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 double slot 6U VME fiber repeater master board

Installation

Follow ESD safety procedure before handling.Fully power off master and slave VME chassis.Insert VMIVME-5532M into vacant double-height 6U VME slot of master chassis and lock front ejector latches.Connect duplex ST fiber cable between VMIVME-5532M (master chassis) and VMIVME-5532S (slave chassis).Power on chassis sequentially,run BIT fiber diagnostic before commissioning;only VME slave boards are permitted on remote slave backplane.

Interface

VME J1/J2 backplane connector,front-panel duplex ST fiber port,fault status signal pins.

Diagnostic

Board undetected: poor VME backplane contact,damaged edge connector or incorrect slot configuration. No fiber lock: reversed TX/RX fiber wiring,low optical input power or transceiver fault. Remote I/O no response: fiber link breakage or VME master conflict. BIT alarm triggered: optical power outside operating threshold.

Product Brief

VMIC VMIVME-5532M double height 6U VME fiber repeater master module,paired with VMIVME-5532S slave card for long-distance transparent VME bus extension,ST multimode fiber up to 2000 m,supports multi-host register function,for multi-chassis distributed real-time control and hardware-in-loop simulation VME systems.