Introducing the Siglent SDM4065A: High-Speed 6½-Digit Digital Multimeter for Precision Testing

The Siglent SDM4065A features an impressive 2,200,000 count resolution, a rapid reading rate of 50,000 readings per second, and a minimum sampling interval of just 20 µs. Designed with 11 versatile measurement functions and a user-friendly touchscreen interface, this instrument is ideal for boosting efficiency in both individual product testing and complex automated production lines.

The SDM4065A delivers full 6½-digit resolution, with a wide display range from -2,199,999 to +2,199,999. This level of precision ensures accurate detection of minute current fluctuations and substantial voltage shifts—making it well-suited for high-sensitivity applications.

Engineered for high-performance environments, the SDM4065A supports up to 50,000 readings per second. Users can select from fast, medium, or slow measurement modes, and configure sampling intervals from 0.001 PLC to 1,000 PLC. This flexibility allows for exceptional data acquisition in applications that demand speed and accuracy.

The SDM4065A offers three advanced acquisition modes. Continuous sampling mode enables real-time monitoring at a constant rate. The data logging function supports up to 100 hours of continuous logging with 2GB internal storage, making it perfect for long-term monitoring. The digitizer function is ideal for precision low-frequency sampling, such as audio signal digitization, often outperforming oscilloscopes in this domain.

The SDM4065A includes five advanced mathematical operations: statistics, limit testing, dBm, dB, and relative measurement. Users can quickly calculate min/max values, averages, standard deviation, and more. It also supports pass/fail testing with defined thresholds—crucial for automated quality control.

This series offers four intuitive display modes: numeric view for real-time readings, histogram for distribution analysis, trend chart for identifying measurement patterns over time, and bar chart for comparative analysis under different test conditions. These visualization tools allow for deeper insights and improved decision-making in production and R&D environments.

When a reading stabilizes, the multimeter signals with an audible alert and automatically stores the latest eight measurements. This feature is invaluable for reviewing recent results, comparing data, and tracking performance changes over time.

The SDM4065A series supports internal storage for up to 2 million readings and allows file management on both internal memory and external USB devices. It supports various file formats such as CSV, XML, and images, and enables convenient operations like saving screen captures, renaming, and deleting files—all from the device interface.

Equipped with USB Host, USB Device, LAN, and optional USB-GPIB interfaces, the SDM4065A supports SCPI commands and works seamlessly with PC-based software. Its built-in web server allows for direct control via a browser—perfect for remote monitoring, automation, and integration into modern test systems.

The Siglent SDM4065A Series represents a well-balanced combination of speed, precision, and stability. Whether you're operating in electronics manufacturing, telecommunications, power systems testing, scientific research, or education, this multimeter is designed to meet today’s most demanding measurement requirements.