VMIC VMIACC-BT01 Rear Transition Board

Module Feature

VMIACC-BT01 is a single-slot 6U VMEbus passive rear transition I/O board developed by VMIC (GE Fanuc / Abaco Systems). It belongs to BT0X transition panel family,specially matched with VMIVME-1184 quadrature counter and other VMIC front-side VME I/O boards. It transfers multi-channel discrete digital signals from VME backplane P2 connector to rear terminal block interface. This board is fully passive without active chips,only PCB copper trace routing for digital signal transmission,without signal amplification,conversion or data processing. Rear breakout design separates all field wiring to chassis rear side,reducing front panel cable clutter and minimizing crosstalk with optimized ground and shielding layout. It meets ANSI/IEEE SWC TEST standard for industrial wiring. Rugged Eurocard PCB with conformal coating,shock and vibration screened for power plant cabinet environment,widely used in gas/steam turbine encoder signal acquisition cabinet wiring,aerospace ground test bench and hardware-in-loop real-time simulation VME chassis.

Working principle

Discrete I/O signals from front VME I/O module pass through VME backplane and connect to P2 connector of VMIACC-BT01. Internal shielded PCB traces directly route all incoming digital signals to rear terminal block connectors. No power consumption required; it only provides physical signal path extension and wiring transition.

Onboard components

VME J1/J2 edge connector,P2 rear VME connector,multi-channel discrete signal terminal block,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 of each discrete signal channel;P2 pin contact and shield ground continuity verification.

Programming software

No driver or software required,completely passive transition hardware.

Electrical & Process Parameters

Model: VMIACC-BT01 Brand: VMIC Device type: 6U VMEbus passive discrete I/O rear transition module Bus standard: VMEbus P2 rear I/O signal routing Signal type: Discrete digital I/O,quadrature encoder related signals Control mode: Passive wiring transition,shield ground layout for noise reduction,no active circuit Power supply: No external power needed Cooling: Convection cooling Protection: Shield plane for EMI suppression Mounting: Standard single-height 6U VME rear 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 passive rear transition breakout board for discrete digital I/O modules

Installation

Follow ESD safety procedure before handling.Fully power off VME chassis.Insert VMIACC-BT01 into rear slot aligned with matched front VME I/O module.Lock rear panel ejector latches.Connect field shielded wiring to rear terminal block.Power on chassis,run signal continuity check before commissioning.

Interface

VME J1/J2 backplane connector,P2 rear signal pins,rear multi-channel terminal block.

Diagnostic

Board undetected: not applicable for passive transition board. Signal open circuit: cracked PCB trace or loose P2 connector contact. High signal noise: poor shield grounding or unshielded field wiring. Terminal connection fault: loose terminal block screw or wire crimp failure.

Product Brief

VMIC VMIACC-BT01 single height 6U VME passive rear transition breakout board,designed for VMIVME-1184 and similar front VME I/O modules,breaks out P2 discrete digital and encoder signals to rear terminals,optimizes low-noise field wiring for turbine encoder signal collection and aerospace hardware-in-loop simulation VME racks.