Acromag QMC Series mezzanine IO Modules
- Technology
- Industrial I/O Modules & Embedded Interfaces
- Partner
- Acromag
The Acromag QMC Series delivers a versatile range of VITA 93 small form factor mezzanine I/O modules engineered for high-performance embedded computing in industrial automation, defence, aerospace, transportation, scientific research, and test & measurement applications. These modules plug into a carrier board using the VITA 93 standard, enabling scalable, rugged I/O expansion with minimal size, weight, power, and cost (SWaP-C).
Each module offers a dedicated function — from precision analogue data acquisition to robust digital I/O and serial communication — and supports rugged deployment with options for extended temperature and conduction-cooled environments.

Range features
A high level overview of what this range offers
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VITA 93 Compliant Modular Architecture – Build flexible systems by mixing different QMC modules on a single carrier card, ensuring interoperability across vendors and platforms.
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Compact & Rugged Design – Single-width modules (26 × 78.25 mm) save space compared to traditional mezzanine forms, ideal for SWaP-constrained embedded applications.
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High Resolution & High Speed Analog Acquisition – The analog modules support simultaneous sampling and 16-bit precision with fast throughput, suitable for signal monitoring and measurement systems.
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Optically-Isolated Digital I/O – Digital inputs and outputs include channel-isolation options to protect system logic and ensure safe operation in noisy or fault-prone environments.
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Programmable Serial Communication – Serial modules allow flexible protocol support (RS-232/422/485), with FIFO buffering and interrupt support for efficient data communication.
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Multifunction I/O Flexibility – The high-density multi-function module combines analogue input, analogue output, digital I/O, and counter/timers in a single mezzanine solution.
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PCI Express Connectivity – All modules interface over PCIe through the carrier, providing high-speed communication to host systems.
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Software & System Management Support – Acromag provides drivers and tools supporting common operating systems — and IPMI support for smart carrier management.
What’s in this range?
All the variants in the range and a comparison of what they offer
| Model | Function | Key Capabilities |
|---|---|---|
QMC350 | Analog Input Module | 20 channels of 16-bit A/D with 1 MSPS per channel, simultaneous sampling, software-selectable input ranges (single-ended/differential) for precision data acquisition. |
QMC440 | Digital Input Module | 32 optically-isolated digital input channels with programmable interrupts and multiple voltage range options, protecting host logic and field wiring. |
QMC450 | Digital Output Module | 32 isolated solid-state relay outputs with bipolar AC/DC switching, high/low side configuration, and output readback. |
QMC510 | Octal Serial Communication | Eight programmable RS-232/422/485 ports with 256-byte FIFO buffers, configurable baud rates, interrupts and timer/counter support. |
QMC520 | Quad Serial Communication | Four isolated programmable RS-232/422/485 ports with FIFO buffers, full/half-duplex support, and interrupt control. |
QMC730 | Multi-Function I/O | Combines analog input and output, 16 digital I/O, and high-resolution counter/timers for mixed I/O and timing applications in one module. |







