VMIC VMIVME-5531S-0 00 Fiber Optic VME Repeater Slave Module

Module Feature

VMIVME-5531S-0 00 is a single-slot 3U VMEbus fiber optic repeater slave module developed by VMIC, serving as the secondary chassis slave card paired with VMIVME-5531M primary repeater board to form VMIVME-5531L VME fiber extension link. It realizes transparent long-distance extension of VME bus signals between separate VME chassis; only VME slave devices can run on the extended secondary chassis, VME master operation is not supported on this side. VME bus interface supports A16/A24 addressing and D08/D16/D32 data transfer, operates exclusively as VME slave. ST multimode fiber interface, fiber transmission distance up to 2000 m, 62.5 μm multimode fiber compatible. The link is fully software-transparent; no special driver modification is required for VME I/O modules installed on the secondary chassis. Built-in BIT diagnostic continuously monitors fiber signal lock, optical receive power and onboard power supply status, latches fault flag and drives front panel LED indicators. Rugged 3U 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 multi-chassis VME expansion control systems.

Working principle

VMIVME-5531M (primary) transmits VME bus signals over fiber to VMIVME-5531S-0 00 slave card. The slave module recovers clock and VME bus commands from optical signals, regenerates VME electrical signals and drives the secondary chassis backplane. All signal conversion is hardware-based and transparent to application software. VME slaves on secondary chassis respond normally to commands issued by the main chassis VME master via fiber link. BIT circuit detects optical signal loss and power anomaly to judge link health status. VME FPGA handles bus signal buffering and status register readback.

Onboard components

VME interface FPGA,clock & data recovery chip,ST duplex fiber transceiver,signal regeneration buffer,BIT optical power monitoring circuit,status register bank,VME J1 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-5531S-0 00 Brand: VMIC Device type: 3U VMEbus fiber optic repeater slave 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: Secondary chassis VME bus extension slave,software transparent link Control mode: VME slave only,hardware signal regeneration,BIT built-in self-test,optical power monitoring Power supply: +5 V from VME backplane Cooling: Convection cooling Protection: Optical over-power protection,ESD protection,overcurrent protection Mounting: Standard single-height 3U VME front panel ejector locking Protection class: PCB with optional conformal coating

Mechanical & Structure

Mounting: Single-slot 3U VME Eurocard Protection class: PCB with optional conformal coating

Environmental

Operating temperature: 0℃ ~ +60℃ Storage temperature: -40℃ ~ +85℃ Ambient humidity: 20~80% non-condensing Certification: CE compliant Status: VMIC 3U VME fiber repeater slave board

Installation

Follow ESD safety procedure before handling.Fully power off primary and secondary VME chassis.Insert VMIVME-5531S-0 00 into vacant 3U VME slot of secondary chassis and lock front ejector latches.Connect duplex ST fiber cable between VMIVME-5531M (main chassis) and VMIVME-5531S-0 00 (secondary chassis).Power on chassis sequentially,run BIT fiber diagnostic before commissioning,install only VME slave boards on secondary backplane.

Interface

VME J1 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. VME I/O no response: link breakage or attempting to install VME master card on secondary chassis. BIT alarm triggered: optical power outside operating threshold.

Product Brief

VMIC VMIVME-5531S-0 00 single height 3U VME fiber repeater slave module,paired with VMIVME-5531M primary card for long-distance transparent VME bus extension,ST multimode fiber up to 2000 m,only supports VME slave devices on secondary chassis,for multi-chassis distributed real-time control and hardware-in-loop simulation VME systems.