Abaco Systems / VMIC VMIVME-4145-001 Arbitrary Waveform Generator

The VMIVME-4145-001 is a four-channel arbitrary waveform generator module designed for VMEbus systems, delivering high-resolution analog signal generation with 16-bit DACs and flexible output voltage programming. Each of the four output channels supports bipolar ranges (±2.5V, ±5V, ±10V) and unipolar ranges (0 to +5V, 0 to +10V), with ±10mA drive capability and 1.5Ω output impedance in online mode.

Technical Specifications

• VMEbus compliance: ANSI/IEEE STD1014-1987, IEC 821 and 297


• 128KB configurable address space (base address A31–A17 via jumper field)


• D16, D08 (EO) data access


• Single-ended analog outputs Waveform Generation Capability


• Four independent channels with 16-bit DAC resolution per channel


• Waveform buffer: 2 to 65,536 samples per channel


• Generation modes: continuous, single burst, or burst/idle/burst


• Deglitched DAC outputs with optional 4-pole low-pass filtering (500kHz or 1MHz Chebyshev; 500kHz or 1MHz Bessel) Clock & Timing


• Internal timebase: 40MHz ±10 PPM stability


• Internal sample clock: 400ns to 1.52ms (25ns resolution)


• External sample clock: minimum 400ns period (2.5 million samples/second maximum)


• External trigger: minimum 50ns pulse width, 300ns latency Calibration & Diagnostics


• Autocalibration and self-test via VMEbus reset or software command


• Onboard DSP and 20-bit ADC for DAC offset and gain calibration


• Offline analog output disconnection for isolated testing

Key Features

• Per-channel programmable output voltage ranges


• ±10mA drive current across full output range


• 65,536-sample buffer capacity per channel for complex waveform generation


• Dual clock architecture supporting both internal and external timing sources


• Integrated filtering options for output conditioning

Typical Applications Test and measurement systems requiring multi-channel signal synthesis, hardware-in-the-loop simulation, and VMEbus-integrated analog stimulus generation.

Compatibility & Integration The module integrates into standard VMEbus crate systems and occupies 128KB of addressable memory. Offline mode enables channel output isolation for circuit protection during configuration or maintenance. Status: Entered Restricted Production Phase (RPP) on September 11, 2018.