The NI PCI-4070 FlexDMM with 1.8 MS/s Isolated Digitizer combines high-precision digital multimeter functionality with fast waveform acquisition for automated test and data acquisition environments. This PCI-based instrument delivers 6½-digit DMM accuracy across voltage, current, and resistance measurements, paired with an isolated digitizer capable of 1.8 MS/s sampling for AC and DC-coupled signal analysis. The dual architecture supports both steady-state characterization and transient signal capture in a single card.
Technical Specifications
Measurement Capabilities
• Resolution: 3 to 7 digits (10 to 23 bits)
• DMM Functions: AC/DC Voltage, AC/DC Current, 2-Wire Resistance, 4-Wire Resistance, Frequency/Period, Diode Test
• DC Voltage Ranges: 100 mV, 1 V, 10 V, 100 V, 300 V
• DC Voltage Reading Rate: 5 S/s (7 digits), 100 S/s (6½ digits), 5 kS/s (5½ digits), 20 kS/s (4½ digits)
• AC Voltage Ranges: 50 mV, 500 mV, 5 V, 50 V, 300 V
• AC Voltage Frequency Range: 1 Hz to 100 kHz
• DC Current Ranges: 20 mA, 200 mA, 1 A
• AC Current Ranges: 10 mA, 100 mA, 1 A
• Resistance Ranges (2-Wire/4-Wire): 100 Ω, 1 kΩ, 10 kΩ, 100 MΩ
• Input Bias Current: <30 pA at 23 °C, typical
Digitizer Specifications
• Maximum Sampling Rate: 1.8 MS/s
• Waveform Acquisition: AC and DC-coupled
Operating Conditions
• Calibration Interval: 2 years
• Warm-up Time: 1 hour
• Operating Temperature Range: 0 °C to 55 °C (Self-Cal); 0 °C to 40 °C (recommended)
– Key Features
• Isolated digitizer design enhances signal integrity in complex industrial environments
• Flexible resolution from 10 to 23 bits enables trade-offs between speed and precision
• Frequency measurement capability to 100 kHz
• Diode test function with variable test currents (1 μA to 1 mA)
• 4-wire resistance for elevated accuracy in low-impedance measurements
– Typical Applications
• Component and module characterization in manufacturing test
• Power supply monitoring and validation
• Signal integrity measurement in mixed-signal systems
• Current profiling and transient capture
– Compatibility & Integration
PCI interface for direct integration into automated test systems. Supports multiple measurement resolutions and sampling rates to match application requirements.
