QMC mezzanine modules plug into a carrier card to interface connected I/O and provide a variety of signal processing functions. Acromag QMC440 modules offer 32 optically isolated inputs to safely monitor a wide range of digital input signal voltage levels. A PCIe bus interface provides communication to the carrier and host computer.
Isolation protects your computer system from noise, transient signals, and field wiring faults. The inputs are grouped into four 8-channel ports. Ports are isolated from the logic and each other.
Change-of-state, high-to-low and low-to high interrupts are individually programmable for each channel. Debounce eliminates spurious interrupts from noise and switching transients for error-free edge detection.
Closed-loop monitoring of critical control signals is easily accomplished using the QMC440 in conjunction with Acromag’s QMC450 digital output module.
QMC modules adhere to the VITA 93 standard for small form factor (SFF) mezzanine modules. Two high-performance 80-pin connectors provide separate field I/O and PCIe bus host interfaces. Modules can deploy on a variety of carrier card platforms including PCIe expansion cards, 3U/6U Eurocards such as VPX and CompactPCI, VNX+ SFF cards, and many other architectures. The rugged design is well-suited for use in laboratory, industrial, defense, and aerospace applications.
QMC modules have a much smaller footprint than PMC/XMC modules. Single-width QMC modules are only 26 x 78.25mm which facilitates mixing and matching of multiple functions on a single carrier card for high-density I/O solutions. They are ideal for computing systems with strict size, weight, power, and cost (SWAP-C) limitations.
An Intelligent Platform Management Interface (IPMI) facilitates system management. The QMC EEPROM holds module information and sensor data that is accessible by a smart carrier card with an IPMC controller over an I2C interface
Features
- 32 port-isolated input channels
- Low, medium, and high voltage versions:
- ±4 to ±18V input
- ±16 to ±40V input
- ±38 to ±60V input
- Interrupt support for each channel
- Programmable event interrupts (change-of-state, low-to-high, high-to-low)
- Programmable debounce
- Input hysteresis
- Reverse polarity protection
- Software configured (no jumpers/switches) allowing “on-the-fly” changes without removing modules
- Pins are compatible with QMC450 output module for loopback monitoring
- Loopback monitoring enables self-test and fault detection of open switches or shorts
- Extended temperature range and support for conduction-cooled systems
| Manuf. Part No | | Part Description |
| QMC441-1111 | | Isolated Digital input, ±4 to ±18V range, Air-cooled |
| QMC442-1111 | | Isolated Digital input, ±4 to ±18V range, Conduction |
Software
| Manuf. Part No | | Part Description |
| USW-API | | Universal Embedded Design Suite with software support for VxWorks®, Windows®, and Linux® |
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