?? Core Specifications of DMM (6.5 digits, ±300V isolation)

1) DC Voltage

Range: ±100 mV ~ ±300 V

Accuracy: ±25 ppm (0.0025%) of reading

Resolution: 6.5 digits (1 µV)

2) AC Voltage (True RMS)

Range: 100 mVrms ~ 300 Vrms

Frequency: 20 Hz ~ 100 kHz

Accuracy: ±0.04% of reading

3) DC/AC Current

DC: ±100 µA ~ ±1 A

AC: 100 µArms ~ 1 Arms

Accuracy: DC ±0.01%; AC ±0.05%

4) Resistance (2-wire / 4-wire)

2-wire: 100 Ω ~ 100 MΩ

4-wire: 100 Ω ~ 1 MΩ

5) DMM Speed

6.5 digits: 100 times/second

4.5 digits: 10,000 times/second (download.ni.com)

6) Isolation

±300 VDC/Vrms isolation (high-voltage safe measurement)

⚡ Key Features: 1.8 MS/s isolated digital instrument

Sampling rate: Up to 1.8 MS/s

Bandwidth: 500 kHz

Isolation: ±300 V isolation (can directly measure high-voltage waveforms, ripples, transients)

Usage: Power quality analysis, semiconductor testing, sensor waveforms, high-voltage transient capture

?? Software and Drivers

Drivers: NI-DAQmx, NI-DMM, FlexDMM

Development environment: LabVIEW, C/C++, C#, Python

System: Windows 7/10/11

⚔️ PCI-4065 vs PCI-4070 (Quick Differentiation)

Accuracy: 4065 ≈ 30 ppm; 4070 25 ppm (slightly higher)

DMM Speed: 4065 3 kS/s; 4070 10 kS/s (3 times faster)

Digital Instrument: 4065 None; 4070 1.8 MS/s (Core Advantage)

Price: 4065 Mid-range; 4070 High-end (Two-in-One)