The SDM4000A series are high-speed 5½-digit and 6½-digit Digital multimeters with a 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 improves individual product testing efficiency but also enhances overall production line performance in accuracy-driven automated environments.
The series offers 5½-digit (220,000 counts) and 6½-digit resolution (2,200,000 counts) with a full-scale display range from -2,199,999 to +2,199,999 – this level of performance ensures precise capture of subtle current variations and large voltage fluctuations.
The SDM4055A series is able to achieve a maximum reading rate of 4,800 readings/s, while the SDM4065A series supports up to 50,000 readings/s. Both models offer adjustable measurement speeds (fast/medium/slow). With 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 - suitable 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 (SDM4065A)
Can outperform oscilloscopes and spectrum analysers in high-precision, low-frequency sampling, particularly suitable for audio signal digitisation.
The SDM4000A supports five operations: statistics, limits, dBm, dB, and relative measurements and can rapidly calculate 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 are also available.
There are four SDM4000A 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 visualise and analyse data with deeper insights.
After the readings stabilise, the multimeter buzzer sounds and displays the results, automatically retaining 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.
The SDM4000A series features enhanced storage and retrieval capabilities. The SDM4055A series is equipped with a 512MB RAM memory and a 256MB NAND - Flash. 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.
The SDM4000A 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.
