The Keysight M9181A is a PXI-based digital multimeter delivering 6½-digit resolution for high-performance automated test systems. This floating-isolated instrument measures DC and AC voltage, DC and AC current, and 2-wire or 4-wire resistance with DCV accuracy to 90 ppm and measurement rates up to 150 readings per second at 4½ digits. The module integrates directly into PXI, Compact PCI, or hybrid chassis and includes software drivers for Windows XP, Vista, and 7, with application examples in LabVIEW, Visual Studio, and MATLAB.
Technical Specifications
• Resolution: 6½ digits (4½ digits at 150 readings/second)
• DCV Accuracy: Up to 90 ppm (1-year basic)
• Measurement Speed: 150 readings/second at 4½ digits
• Voltage Measurement Range: Minimum 20 mV or 5% of range (whichever is larger)
• Current Measurement Range: Minimum 0.2 mA or 5% of range (whichever is greater)
• Signal Limit: 8×10⁶ volt·Hz product (80 V maximum at 100 kHz)
• Resistance (2-wire): Add 1 mΩ to 4-wire specifications
• DCI Resolution Limitation: 5½ digits on 2 mA and 200 mA ranges
• Overrange: 20% on all ranges
• Isolation: Floating, CAT II to 240 V
• Operating Temperature: 0 to 50 °C
– Key Features
• Measures DC voltage, AC voltage, DC current, AC current, and resistance (2-wire and 4-wire)
• PXI-1 (J-1) chassis connector compatibility
• 20% overrange capability across all measurement ranges
• In-rack calibration supported with standard sources
• Factory calibrated to ISO-9002 and NIST-traceable standards
• Annual calibration recommended
– Typical Applications
• Automated production test systems
• Research and development bench testing
• Systems requiring high-speed, high-resolution DC and AC measurements
– Compatibility & Integration
The M9181A installs in PXI, Compact PCI, or hybrid chassis using cPCI or PXI-1 J1 slots. Software drivers support Windows XP, Vista, and 7 with full APIs for LabVIEW, Visual Studio (C, C++, C#, Visual Basic), and MATLAB. Keysight IO Libraries Suite provides rapid instrument connection and PXI module integration.
