PXI Digital Multimeters (DMMs) range from low-cost 6½-digit devices to high-performance 7½-digit models, including the most accurate 7½-digit DMM on the market, the PXIe-4081. Some models include specialized features such as extended measurement ranges, an isolated digitizer mode with sample rates up to 1.8 MS/s, extended calibration cycles, and basic inductance and capacitance measurements. Combined in a single instrument, these features provide a solution to the measurement challenges inherent in traditional precision instruments: limited measurement throughput and flexibility.
These DMMs deliver a smarter way to tackle difficult applications in industries ranging from consumer electronics to aerospace and defense. NI’s DMM portfolio is highlighted by the PXIe-4081, the industry’s most accurate 7½-digit DMM. The PXIe-4081 provides 26 bits of resolution and high-stability, metrology-class voltage measurements that range from 10 nV to 1,000 V, current measurements that range from 1 pA to 3 A, and resistance measurements that range from 10 µΩ to 5 GΩ.
| Model | Bus Connector | Digits of Resolution | DC Voltage Range | DC Current Range | L&C Measurements | Maximum Sample Rate | Basic DC Voltage Accuracy |
| PXI-4065 | PXI Hybrid | 6.5 | -300 V to 300 V | -3 A to 3 A | No | 3 kS/s | 90 ppm |
| PXI-4070 | PXI Hybrid | 6.5 | -300 V to 300 V | -1 A to 1 A | No | 1.8 MS/s | 25 ppm |
| PXI-4071 | PXI Hybrid | 7.5 | -1000 V to 1000 V | -3 A to 3 A | No | 1.8 MS/s | 12 ppm |
| PXI-4072 | PXI Hybrid | 6.5 | -300 V to 300 V | -1 A to 1 A | Yes | 1.8 MS/s | 25 ppm |
| PXIe-4080 | PXIe | 6.5 | -300 V to 300 V | -1 A to 1 A | No | 1.8 MS/s | 25 ppm |
| PXIe-4081 | PXIe | 7.5 | -1000 V to 1000 V | -3 A to 3 A | No | 1.8 MS/s | 12 ppm |
| PXIe-4082 | PXIe | 6.5 | -300 V to 300 V | -1 A to 1 A | Yes | 1.8 MS/s | 25 ppm |
