Model Interpretation

VMIVME: VMEbus module series (VMIC/GE)

4140: High‑density 32‑channel 12‑bit analog output board

Common suffix:

‑000: Standard industrial grade (0°C to +60°C)

Technical Parameters

Analog Output

Channels: 32 independent, each with dedicated 12‑bit DAC

Resolution: 12‑bit (0.024% FSR)

Voltage Ranges (software‑selectable):

Bipolar: ±2.5 V, ±5 V, ±10 V

Unipolar: 0–2.5 V, 0–5 V, 0–10 V

Current Drive: ±10 mA per channel (sink/source)

Output Impedance: 0.8 Ω

Update Rate: Up to 10 kHz; random (non‑scanning) or synchronous (software/external trigger) double‑buffered updates

Settling Time: 18 μs (full‑scale step, 0.01% accuracy)

Accuracy & Drift

Initial Accuracy (+25°C):

Gain error: ±0.03% of set value

Offset error: ±1.5 mV

Temperature Drift: ±35 ppm/°C (gain), ±30 μV/°C (offset)

Long‑Term Drift: ±45 ppm/1000 hours (gain)

Crosstalk: ≥70 dB (DC–1 kHz)

Bus & Mechanical

Form Factor: 6U VMEbus (233.35 × 160 mm), single‑slot

VME Interface: Slave, VME64 compliant

Power: +5 VDC ±10%, <5 W

Operating Temp: 0°C to +60°C (standard); optional –40°C to +85°C

Cooling: Passive convection

Diagnostics & Calibration

Self‑Test: On‑board diagnostics; front‑panel status LED

Calibration: Automatic via reset or software; single reference potentiometer (no manual trim per channel)

Field Disconnect: Outputs can be isolated for offline testing

Core Functions

32‑Channel Precision Analog Control: Independent 12‑bit DACs deliver high accuracy and low crosstalk for multi‑loop control.

Software‑Configurable Ranges: Unipolar/bipolar voltage and ±10 mA current drive adapt to diverse actuator/sensor needs.

Synchronous/Random Updates: Double‑buffered synchronous updates ensure channel alignment; random mode optimizes responsiveness.

Automatic Calibration & Diagnostics: Minimizes maintenance; self‑test and field disconnect simplify system checkout.

Rugged VME Integration: 6U form factor, passive cooling, and industrial temp range suit harsh environments.

Applications

Industrial Automation: DCS, PLC analog output, valve/actuator control, motion control.

Aerospace & Defense: Avionics signal simulation, radar control, test bench analog I/O.

Test & Measurement: ATE, hardware‑in‑the‑loop (HIL) simulators, sensor emulation.

Energy & Power: Turbine control, power plant analog output, grid simulation.

Usage & Maintenance

Installation: Insert into 6U VME chassis; connect front‑panel analog output connectors.

Configuration: Select voltage/current ranges and update mode via software; set VME slave address via jumpers.

Maintenance: Passive cooling requires no fan maintenance; perform annual calibration check via software command.

Status: Restricted Production Phase (RPP) since May 31, 2019; replacement is Abaco’s modern VME/VPX AO boards。