VMIC VMIVME-3113A-100 Analog Input ADC Board

Module Feature

VMIVME-3113A-100 is a single-slot 6U VMEbus analog-to-digital converter board developed by VMIC,offering up to 64 analog input channels configurable as single-ended or differential mode. It powers up in auto-scan mode without software initialization;the ADC continuously samples and converts all selected channels and stores digital results into dedicated dual-port channel registers. Channel scan range can be configured via hardware jumper,ranging from 2 to 64 channels. Jumper programmable gain options include ×1, ×10, ×100, ×200, ×500. Selectable analog input voltage ranges:0~5 V,0~10 V,0~+10 V. The board provides five working modes:Auto Scan Mode,Random Polling Mode,Random Interrupt Mode,Scan Polling Mode,Scan Interrupt Mode. User programmable interval timer supports periodic channel scanning. Low-pass filter can be enabled for high-frequency noise rejection. Overvoltage protection circuit is fitted on every analog input path,input impedance maintains 5 MΩ. Conversion rate reaches 33 kHz. Output digital codes are selectable:pure binary,offset binary,signed extended binary. Built-in BIT diagnostic supports online real-time monitoring and offline loopback test,detects channel fault,overrange error and power anomaly,latches fault flags in status register. VME interface supports A16/A24 addressing and D08/D16/D32 data transfer,operates as VME slave with programmable interrupt levels. Rugged Eurocard PCB with conformal coating,shock and vibration screened for power plant cabinet environment,widely used in gas/steam turbine monitoring,hardware-in-loop real-time simulation,process control and aerospace test VME chassis.

Working principle

Field analog signals enter multiplexer array,selected channel signal passes low-pass filter and overvoltage clamping circuit before feeding to ADC converter. Digital conversion result is written into dual-port register array automatically in auto-scan mode;VME host processor reads registers to acquire sampled data. Timer circuit triggers periodic scan sequence. BIT logic can inject reference test voltage into front-end circuit and compare converted digital value against expected threshold to judge channel integrity. Hardware jumper sets gain and input range to match different field transducers. VME FPGA completes address decoding,data handshake and interrupt request forwarding.

Onboard components

VME interface FPGA,multi-channel analog multiplexer array,ADC converter chip,dual-port result register RAM,programmable scan timer,jumper gain/range configuration bank,low-pass filter network,overvoltage protection array,BIT reference voltage source,VME J1/J2 edge connector,front panel analog signal terminal header,multi-status LED array.

LED indicators

Front panel LED indicators for board +5 V power,VME bus activity,BIT fault alarm and analog channel overrange status.

Hardware self-diagnosis

Visual inspection of PCB,front ejectors and solder joints;board ID register readback verification;BIT offline loopback test for all 64 channels;overrange protection verification;scan timer response test;VME A16/A24 read/write communication test.

Programming software

VMIC VME device driver library,universal board configuration and BIT diagnostic utility,supports VxWorks,Linux and QNX real-time operating systems;software tool for scan mode setup,interrupt configuration and fault log reading.

Electrical & Process Parameters

Model: VMIVME-3113A-100 Brand: VMIC Device type: 6U VMEbus 64 channel analog input ADC module Bus standard: VMEbus, A16/A24 addressing, D08/D16/D32 transfer Channel count: 64 single-ended / 32 differential Gain: Jumper selectable ×1, ×10, ×100, ×200, ×500 Input voltage range: 0~5 V, 0~10 V, 0~+10 V Input impedance: 5 MΩ Max conversion rate: 33 kHz Control mode: VME slave access,auto scan mode,programmable timer,BIT built-in test,input overvoltage protection Power supply: +5 V from VME backplane Cooling: Convection cooling Protection: Input overvoltage protection,overrange detection,ESD protection,low-pass noise filtering Mounting: Standard 6U VME front panel ejector locking Protection class: PCB with optional conformal coating

Mechanical & Structure

Mounting: Standard single-slot 6U VME Eurocard Protection class: PCB with optional conformal coating

Environmental

Operating temperature: 0℃ ~ +60℃ Storage temperature: -40℃ ~ +85℃ Ambient humidity: 5~95% non-condensing Certification: CE compliant Status: VMIC 64 channel VME analog input ADC board

Installation

Follow ESD safety procedure before handling.Fully power off VME chassis.Insert VMIVME-3113A-100 into vacant 6U VME slot and lock front panel ejector latches.Set hardware jumpers for gain,input range and scan channel count.Wire field analog transducers to front terminal header.Power on chassis,load VMIC VME driver,run BIT channel diagnostic before commissioning.

Interface

VME J1/J2 backplane connector,front-panel multi-pin analog signal terminal header,VME interrupt signal pins,fault status register pins.

Diagnostic

Board undetected: poor VME backplane contact,damaged edge connector or incorrect base address jumper setting. All channel readings abnormal: wrong gain/range jumper configuration or reference voltage drift. Individual channel failure: multiplexer fault or damaged input protection diode. Auto-scan stop: scan timer configuration error or VME interrupt conflict.

Product Brief

VMIC VMIVME-3113A-100 single height 6U VME analog input ADC board,64 configurable single-ended/differential channels,hardware selectable gain and voltage range,auto-scan and full BIT diagnostic function,for power plant turbine monitoring and hardware-in-loop real-time simulation VME systems.