VMIC VMIACC-0577 Rear Transition Board

Module Feature

VMIACC-0577 (part number 332-800577-000 A) is a passive CompactPCI rear transition I/O board developed by VMIC (GE Fanuc / Abaco Systems). It works paired with VMIC CompactPCI single board computers,installed on the rear side of CompactPCI backplane. It routes signals from front SBC through backplane J3 and J5 connectors to rear accessible interfaces,including dual DB9 serial ports,1 USB port,enhanced IDE hard disk header,floppy disk header and dual 68-pin PMC I/O headers. This board is fully passive without signal processing chips;it only provides PCB trace routing for computer peripheral and PMC expansion signals. Rear I/O design eliminates front panel cable clutter and protects front CPU board connectors from repeated plugging wear. Rugged Eurocard PCB with conformal coating,shock and vibration screened for power plant cabinet environment,widely used in gas/steam turbine CompactPCI control cabinet wiring,aerospace ground test bench and hardware-in-loop real-time simulation CompactPCI chassis.

Working principle

All peripheral and PMC I/O signals from front CompactPCI SBC pass through CompactPCI backplane to J3/J5 connectors on VMIACC-0577. Internal PCB traces directly distribute these signals to rear-side DB9,USB,IDE,floppy and PMC 68-pin headers. No signal conversion or amplification,only passive wiring transition.

Onboard components

CompactPCI J3 / J5 rear connectors,dual DB9 serial connectors,USB port,40-pin IDE header,34-pin floppy header,dual 68-pin PMC I/O headers,passive copper trace network and ground shield plane.

LED indicators

No LED indicators,completely passive hardware.

Hardware self-diagnosis

Visual inspection of PCB,components and solder joints;continuity test for serial,USB,IDE and PMC signal channels;J3/J5 pin contact and shield ground continuity verification.

Programming software

No driver or software required,completely passive transition hardware.

Electrical & Process Parameters

Model: VMIACC-0577,332-800577-000 A Brand: VMIC Device type: CompactPCI passive rear transition module Bus standard: CompactPCI J3 / J5 rear I/O signal routing Signal type: Serial,USB,IDE,floppy,PMC expansion I/O Control mode: Passive wiring transition,shield ground layout for noise reduction,no active circuit Power supply: Auxiliary ATX power input header,low power consumption Cooling: Convection cooling Protection: Shield plane for EMI suppression,fuse protection on power input Mounting: Standard single-height CompactPCI rear panel ejector locking Protection class: PCB with optional conformal coating

Mechanical & Structure

Mounting: Single-slot CompactPCI 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 CompactPCI passive rear transition breakout board for SBC peripheral and PMC I/O

Installation

Follow ESD safety procedure before handling.Fully power off CompactPCI chassis.Insert VMIACC-0577 into rear slot aligned with matched front CompactPCI SBC.Lock rear panel ejector latches.Connect peripheral cables (serial,USB,IDE hard disk) to rear panel connectors.Power on chassis,run signal continuity check before commissioning.

Interface

CompactPCI J3/J5 backplane connectors,rear DB9 serial ×2,USB port,IDE/floppy headers,dual 68-pin PMC I/O headers,ATX power header.

Diagnostic

Board undetected: not applicable for passive transition board. Signal open circuit: cracked PCB trace or loose J3/J5 connector contact. Serial communication failure: poor DB9 pin contact or wrong wiring definition. PMC I/O abnormal: 68-pin header pin misalignment or crimp failure.

Product Brief

VMIC VMIACC-0577 332-800577-000 A CompactPCI passive rear transition board,matched for VMIC CompactPCI single board computer,breaks out serial,USB,IDE,floppy and PMC I/O signals via J3/J5 rear connectors,optimizes rear peripheral wiring for turbine control and aerospace hardware-in-loop simulation CompactPCI racks.