The Keysight M9187A is a PXI-compliant digital I/O module that provides 32 independent input and 32 independent output channels for control and monitoring of digital states in automated test systems. Each channel can be individually configured to adapt to specific measurement and switching requirements across aerospace, defense, automotive, electronic test, and semiconductor applications. The module integrates directly into PXI chassis via the backplane and offers field-programmable input thresholds, configurable output drive modes, and comprehensive protection against voltage and thermal faults.
– Technical Specifications
Digital Inputs:
• 32 channels with programmable threshold voltage (0.3 V to 50 V DC)
• Threshold resolution: 12.5 mV DC
• Input protection: 100 V maximum
• Signal bandwidth: Static to <10 kHz
• Input voltage range: 0.3 V to 50 V DC
Digital Outputs:
• 32 channels with independent drive configuration
• High-side source: Up to 0.4 A
• Low-side sink: Up to 0.5 A
• Maximum output voltage: 50 V DC
• Supports active high/low drive and open-collector/open-drain modes
• Over-voltage, over-current, and thermal overload protection on all channels
• External power supply required for high-side drive (+5 V to +50 V)
Power and Interface:
• Backplane power: +5 V DC, ±12 V DC via PCI connector (J1)
• Front-panel connectivity: 78-pin D-type connector
• Chassis slots: cPCI (J1), PXI-1, and PXIe hybrid compatible
• Optional Y1181A connector block available
– Key Features
• Field-programmable input thresholds enable direct interface to logic families and analog signal levels
• Dual-drive output capability supports both sourcing and sinking current paths
• Per-channel protection eliminates nuisance faults in multi-device test configurations
• Static-to-low-frequency operation suits relay control, digital monitoring, and discrete signal switching
– Typical Applications
Defense and aerospace equipment testing, automotive harness and sensor validation, semiconductor test fixture control, and general-purpose digital switching in PXI-based automated test environments.
– Compatibility & Integration
Supports IVI-COM, IVI-C, and LabVIEW drivers under Windows XP (32-bit), Windows Vista (32/64-bit), and Windows 7 (32/64-bit). Programming available in Visual Studio (VB.NET, C#, C/C++), LabVIEW, LabWindows/CVI, MATLAB, and Visual Basic.
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