Siglent launches SDM4065A 6½-Digit Digital Multimeter with enhanced precision and speed
In the automatic production lines where speed drives profitability, the Digital Multimeter as core equipment in automated testing directly impacts system efficiency. On September 25, 2025, Siglent launches the SDM4065A series high-speed 6½-digit Digital multimeters. With 2,200,000 counts, fast reading rate of 50,000 readings/s, minimum sampling interval of 20 µs, 11 measurement functions, and a touchscreen with intuitive interface, the SDM4000A not only elevates individual product testing efficiency but also enhances overall production line performance in accuracy-driven automated environments.
True 6½-digit precision
SDM4065A offers 6½-digit resolution (2,200,000 counts) with a full-scale display range from -2,199,999 to +2,199,999. Its exceptional performance ensures precise capture of subtle current variations and large voltage fluctuations.
High speed Measurement
The SDM4065A series supports up to 50,000 readings/s. Both models offer adjustable measurement speeds (fast/medium/slow). For the SDM4065A, its sampling interval can be precisely configured from 0.001 PLC to 1,000 PLC (Power Line Cycle), enabling superior performance in high-speed data acquisition and micro-variation monitoring—ideal for applications requiring precise measurements.
Three acquisition modes
 | Continuous Sampling Mode Constant-rate sampling enables real-time monitoring. |
 | Data Logging Function Supports continuous data logging for up to 100 hours with 2GB internal storage, ideal for long-term trend analysis. |
 | Digitizer Function Outperforms oscilloscopes and spectrum analyzers in high-precision, low-frequency sampling, particularly suitable for audio signal digitization. |
Advanced Math Functions
SDM4065A supports five operations: statistics, limits, dBm, dB, and relative measurements. It rapidly calculates max/min, average, peak-to-peak, standard deviation, and sample count, while enabling pass/fail testing via preset thresholds. Voltage-to-power conversion, dB-based relative measurements, and deviation analysis further enhance versatility.
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Four Display Modes
SDM4065A offers four modes: Numeric for instant clarity, Histogram for data distribution analysis, Trend Chart for dynamic data pattern observation and trend prediction, and Bar Chart for cross-condition comparisons and rapid analysis of variations and patterns under different conditions, empowering users to visualize and analyze data with deeper insights.
Digital display |
Histogram |
Trend chart |
Bar chart |
Probe Hold
After the readings stabilize, the multimeter buzzer sounds and displays the results, automatically retains the latest eight readings for users to compare and refer to. Users can access historical data at any time for in-depth analysis of equipment performance or parameter changes, and the displayed data can be cleared with a single click.
Storage & Recall
The SDM4065A series features excellent storage and retrieval capabilities. The SDM4065A series can save up to 2 million readings. Users can easily manage instrument parameter files in the internal storage area and on external USB storage devices. It supports the storage of various types of files such as reading points, pictures, CSV/XML files. Users can perform operations like creating folders, saving screen captures, copying, renaming, and deleting files, enabling efficient data management.
Remote Control & Programming
SDM4065A integrates USB Host, USB Device, and LAN interfaces, with an optional USB-GPIB module. It supports standard SCPI remote control commands, PC-based software, and compatibility with the latest mainstream multimeter command sets. Its embedded web server enables direct remote control and programming via a browser, fulfilling diverse communication and automation needs.
Web control
The SDM4065A high-speed 6½-digit multimeters strike a balance between speed, accuracy, and stability. Whether applied in automated control system testing, power engineering, electronics manufacturing and repair, telecommunications and networking, or scientific research and education, the SDM4065A series is dedicated to delivering a new measurement experience for engineers, enabling more precise and efficient testing.
Anwender Forum EMV
SIGLENT will attend User Forum EMC, held in Munich – 2nd July 2020. Participation in this exciting day is free.
SIGLENT Launches SMM3000X Series Source/Measure Unit
February 27, 2026 — SIGLENT Technologies releases SMM3000X Series Source/Measure Unit (SMU). SMM3000X features 6½-digit resolution, output capability of up to ±210 V DC voltage, ±3.03 A DC current, and ±10.5 A pulsed current, with programming and measurement resolution down to 10 fA / 100 nV, and a maximum acquisition rate of 100,000 points/s.
The SMM3000X supports four-quadrant operation, enabling simultaneous sourcing and measurement for closed-loop source–measure operations on DUTs. It can function as a voltage source, current source, voltmeter, ammeter, and ohmmeter, and also supports pulse generation and arbitrary waveform output, making it an ideal platform for characterizing semiconductors and other nonlinear devices and materials.
High-Accuracy Pulse Simulation
In pulse mode, the SMM3000X series supports pulsed current output up to ±10.5 A, with a minimum pulse width of 50 μs. This allows precise emulation of transient operating conditions of power devices, such as switching loss testing for GaN and SiC devices, providing strong support for R&D and validation of wide-bandgap power semiconductors.
Linear and Log Sweep Functions
The SMM3000X supports linear, log and pulsed sweep modes. Users can define start and stop values with fixed step sizes to source voltage or current point-by-point, while automatically measuring and logging each data point. This enables fast characterization of devices such as diodes and transistors, allowing engineers to extract I-V curves and analyze conduction behavior under different operating conditions.
Flexible User-Defined Sequences
List mode allows users to define custom output sequences with minimum timing resolution down to 10 μs. Parameter changes can be linear, non-linear, arbitrary, or user-ordered. The SMM3000X outputs voltage or current according to the defined list while synchronously measuring and recording data—ideal for non-uniform sweeps, multi-segment tests, and complex stimulus profiles.
Data Visualization and Analysis
The SMM3000X series provides multiple display modes including Graph, Roll, and Measure views.
- Graph View enables real-time plotting of mathematical results.
- Roll View displays time-domain waveforms of acquired data.
- Measure View provides statistical analysis of traces.
These views offer multi-dimensional insight into test results, making data interpretation and debugging more intuitive.
Efficient Remote Programming and Control
Based on an advanced SCPI command set, the SMM3000X supports USB and LAN interfaces for seamless PC connectivity and automation. Users can operate the instrument via a built-in web interface or implement deep custom control using SCPI scripting. In addition, TCP/IP Socket communication is supported for flexible network-based test control and integration into automated test systems.
The SMM3000X series is designed to meet the precision testing needs of third-generation semiconductors, advanced optoelectronic devices, and emerging materials, while also significantly accelerating development cycles for new energy batteries and high-density integrated circuits. By improving both test efficiency and measurement accuracy, provides a powerful foundation for new product development and innovation.
