



SDM3045X — 4½-digit 66,000-count Dual-display Digital Multimeter
SIGLENT SDM3045X is a 4½-digit, 66,000-count bench digital multimeter for lab, education and entry automated test use. It supports dual display, True-RMS AC voltage/current measurement, thermocouple temperature measurement, trend/statistics views, USB Host, USB Device, LAN and SCPI remote control.
| Model | Resolution | Count | DCV Accuracy | Interfaces |
|---|---|---|---|---|
| SDM3045X | 4½ digit | 66,000 | 0.06% reading + 8 counts | USB Host · USB Device · LAN |
Key Features
4½-digit · 66,000-count Resolution
66,000-count reading resolution gives better display granularity than basic 50,000-count class instruments and is suitable for routine voltage, current, resistance and continuity measurement.
Up to 150 Readings per Second
Fast reading speed supports logging, production checks and PC-controlled measurement sequences where a handheld multimeter is too slow or inconvenient.
True-RMS AC Measurement
True-RMS AC voltage and AC current measurement improves accuracy on non-sinusoidal waveforms compared with average-responding meters.
Dual Display and Measurement Views
Dual display, histogram, trend chart, bar chart, statistics, hold and dBm functions make it easier to observe changing signals without external logging software.
Thermocouple Temperature Measurement
Built-in cold-junction compensation supports thermocouple measurement for basic temperature checks alongside electrical parameters.
USB / LAN Remote Control
USB Device, USB Host and LAN interfaces support SCPI remote control, file storage and EasyDMM PC software integration for entry automated test systems.
Local Storage and File Management
1 Gb NAND flash and USB storage support configuration and data-file handling directly from the instrument.
Scanner-card Limitation
SDM3045X is not compatible with the SC1016 scanner card. Use a higher SDM series when scanner-card expansion is required.
Specifications
| Parameter | Unit | Value / Description |
|---|---|---|
| MEASUREMENT | ||
| Reading resolution | — | Real 4½ digit · 66,000 count |
| Reading speed | rdgs/s | Up to 150 |
| DC voltage accuracy, 1 year | — | 0.06% of reading + 8 counts |
| DC voltage range | V | 600 mV to 1000 V |
| AC voltage range | V | 600 mV to 750 V |
| DC current range | A | 600 µA to 10 A |
| AC measurement | — | True-RMS AC voltage and AC current |
| Temperature | — | Thermocouple support with built-in cold-junction compensation |
| DISPLAY AND FUNCTIONS | ||
| Display | — | 4.3-inch TFT-LCD · 480 × 272 |
| Display modes | — | Dual display · histogram · trend chart · bar chart · statistics · hold · dBm |
| Menu language | — | Chinese and English menu support |
| Memory | — | 1 Gb NAND flash for configuration and data files |
| CONNECTIVITY | ||
| Standard interfaces | — | USB Device · USB Host · LAN |
| Remote control | — | SCPI command support · EasyDMM PC software |
| Scanner card | — | Not compatible with SC1016 scanner card |
Applications
University and Training Lab
Bench DMM for electrical/electronics labs where students need a stable display, basic logging and SCPI-connected measurement practice.
Entry Automated Measurement
USB/LAN and SCPI support allow simple voltage, current, resistance and continuity checks inside PC-controlled validation or production fixtures.
Repair and Maintenance
Dual display, True-RMS measurement and trend/statistics views help service teams verify boards, supplies, sensors and cable assemblies.
PSU and DC-DC Verification
Use DC voltage/current measurement and logging to check output stability, load behaviour and drift during power-supply validation.
Thermocouple Monitoring
Thermocouple input allows basic temperature monitoring during electronics bring-up, environmental checks and heat-rise observations.
General Bench Measurement
Cost-effective bench multimeter for routine measurement where higher-end 5½ or 6½ digit systems are not required.



