The NI PXIe-4082 is a 6½-digit digital multimeter and high-speed digitizer for PXIe systems, delivering precision measurements and waveform acquisition in a single modular instrument. It combines traditional DMM functions—AC/DC voltage and current, resistance, frequency, period, capacitance, inductance, and diode testing—with isolated digitizer capabilities operating at 1.8 MS/s. Engineers and system integrators use it for automated test, data acquisition, and signal analysis in demanding measurement environments.
Technical Specifications
Measurement Resolution: 6½ digits
DMM Functions: AC/DC Voltage, AC/DC Current, 2-wire and 4-wire Resistance, Frequency, Period, Capacitance (Basic), Inductance (Basic), Diode Test
DC Voltage: 100 mV to 300 V ranges; maximum ±300 V; ADC linearity 0.5 ppm of reading + 1 ppm of range; input bias current 140 dB (DC), >170 dB (>46 Hz) with high-order DC noise rejection at 100 ms aperture (typical)
AC Voltage: 15 Hz to 500 kHz frequency range; 1 MΩ ± 2% input impedance in parallel with 150 pF (typical); maximum DC component 250 V; volt-hertz product to 2.2 × 10⁷ V-Hz
DC Current: 20 mA, 200 mA, 1 A ranges; maximum ±1 A
Resistance: 100 Ω to 100 MΩ ranges; 4-wire capable with maximum lead resistance of 10% of range
Digitizer Mode: Isolated voltage (±100 mV to ±300 V DC or AC coupled) and current (±20 mA to ±1 A) acquisition at up to 1.8 MS/s; variable sample rates down to 1.8 MS/s ÷ 1.8 × 10⁵; minimum 2-sample record length, unlimited maximum
– Key Features
• High-speed waveform capture for transient signals and detailed analysis
• Isolated digitizer reduces noise and cross-coupling in multi-channel systems
• Flexible input coupling and configurable sample rates for varied measurement scenarios
• Precision current measurement up to 1 A; extend range with optional current shunt module (CSM)
• Dual-mode operation eliminates need for separate DMM and digitizer hardware
– Typical Applications
• Power supply testing and characterization
• Transient capture in switching circuits
• High-accuracy voltage and resistance measurement in automated test
• Multi-function data acquisition in PXIe test systems
– Compatibility & Integration
PXI Express (PXIe) form factor for modular test system integration.
