The Curtiss-Wright / Pentland Systems MPV901 is a single-slot VMEbus analog input module for data acquisition and signal conditioning in industrial automation, aerospace, and defense systems. The module converts analog sensor signals to digital format with 12-bit resolution and routes them into VMEbus architectures. Three variants address different measurement requirements: the MPV901 provides analog input only, the MPV901A adds dual 12-bit D/A converters for closed-loop control, and the MPV901P integrates a software-programmable gain amplifier for dynamic signal scaling without hardware reconfiguration.
## Technical Specifications
**Analog Input Architecture**
• 32-channel single-ended or 16-channel differential multiplexer
• 12-bit analog-to-digital converter
• Sample/hold amplifier
• Instrumentation amplifier (resistor-programmed on MPV901/MPV901A; software-programmable on MPV901P)
**Analog Output (MPV901A, MPV901P only)**
• Two 12-bit digital-to-analog converters with associated control logic
**Programmable Gain Amplifier (MPV901P)**
• Dynamic gain and channel selection monitoring
• Optimized settling time for maximum data throughput
**Power Supply**
• +5V from VMEbus P1 connector
## Key Features
• Direct VMEbus electrical and mechanical compatibility
• Single-slot form factor minimizes backplane footprint
• Flexible input configuration supports mixed single-ended and differential topologies
• Software-selectable gain on MPV901P eliminates manual jumper changes between measurement ranges
• Instrumentation amplifier topology provides high input impedance and common-mode rejection
## Typical Applications
Data acquisition in vibration monitoring, temperature sensing, pressure transducer interfacing, and analog control loops. Aerospace test stands, defense instrumentation, and industrial process control systems benefit from the module’s direct VMEbus integration and configurable channel architecture.
## Compatibility & Integration
The MPV901 series integrates into VMEbus systems without additional interface electronics. Gain settings and channel selection are monitored in real time on the MPV901P, enabling adaptive measurement without processor intervention between acquisitions.
