SDM4065A — 6½-digit Precision Bench Multimeter
SIGLENT SDM4065A / SDM4065A-SC are 6½-digit, 2,200,000-count dual-display digital multimeters for high-accuracy R&D, burn-in and production measurement. The series supports up to 50k readings/s, 0.0035% one-year DC voltage accuracy, four display modes, USB/LAN remote control and an SC variant with integrated scanner-card capability.
| Model | Digits / Count | DC Voltage Accuracy | Measurement Speed | Scanner Card | Use Case |
|---|---|---|---|---|---|
| SDM4065A | 6½ · 2,200,000 count | 0.0035% | Up to 50k rdgs/s | No | High-accuracy bench and ATE DMM |
| SDM4065A-SC | 6½ · 2,200,000 count | 0.0035% | Up to 50k rdgs/s | 12 multi-purpose + 4 current channels | Multi-point R&D, burn-in and production test |
Key Features
6½-digit · 2,200,000-count Resolution
High-resolution measurement supports precision DC voltage, current, resistance, capacitance, frequency, diode, continuity and temperature checks in R&D and production environments.
Up to 50k Readings/s
Fast measurement speed supports high-throughput automated testing and digitizing-style capture where reading rate directly affects test time.
SDM4065A-SC Scanner Variant
The SC model integrates a scanner with 12 multi-purpose channels and 4 current channels for multi-point DCV, ACV, DCI, ACI, resistance, capacitance, frequency, diode, continuity and temperature measurements.
Four Display Modes
Numerical, bar meter, trend chart and histogram modes make it easier to inspect drift, spread, stability and pass/fail behaviour directly on the instrument.
Large Memory for Logging
512 MB RAM supports caching up to 2M readings, while internal flash stores readings, screenshots and configuration files for repeatable test workflows.
SCPI Remote and EasyDMM-X Control
USB Device, USB Host and LAN interfaces support remote operation, automated measurement and integration with PC-based control workflows.
Specifications
| Parameter | Unit | Value / Description |
|---|---|---|
| GENERAL | ||
| Reading resolution | digits / counts | 6½ · 2,200,000 counts |
| Models | — | SDM4065A · SDM4065A-SC |
| Display | — | 5-inch true-colour TFT-LCD · dual display |
| Display modes | — | Numerical · bar meter · trend chart · histogram |
| MEASUREMENT RANGES | ||
| DC voltage | V | 200 mV to 1000 V |
| AC voltage | V | 200 mV to 750 V |
| DC current | A | 200 µA to 10 A |
| Functions | — | DCV · ACV · DCI · ACI · 2WR · 4WR · capacitance · frequency · diode · continuity · temperature |
| ACCURACY AND SPEED | ||
| DC voltage accuracy | — | 0.0035% one-year specification |
| Measurement speed | rdgs/s | Up to 50,000 |
| MEMORY AND CONTROL | ||
| Reading cache | — | 512 MB RAM · up to 2M readings |
| Internal storage | — | 256 MB NAND flash for readings, images and configuration files |
| Remote control | — | SCPI · EasyDMM-X PC control |
| Interfaces | — | USB Device · USB Host · LAN · optional USB-GPIB adapter |
| SCANNER VARIANT | ||
| SDM4065A-SC scanner | channels | 12 multi-purpose + 4 current channels |
| Upgrade note | — | Scanner is included only on SDM4065A-SC and cannot be added later to SDM4065A |
Applications
High-throughput Automated Test
Up to 50k readings/s and SCPI control make the SDM4065A suitable for production measurement where throughput and repeatability matter.
Multi-point Burn-in and Production Test
The SDM4065A-SC scanner variant supports multi-point voltage, current, resistance, capacitance, frequency and temperature measurement.
Precision Bench Characterisation
6½-digit resolution and trend/histogram views help engineers evaluate drift, stability and tolerance spread during design validation.
Incoming and Final Inspection
High-resolution electrical measurement supports inspection of power modules, components, assemblies and production samples.
Thermal and Environmental Logging
RTD and thermocouple support on the scanner variant helps correlate electrical performance with temperature during burn-in or validation.
Advanced Measurement Lab
Suitable for university and training labs that need a precision DMM platform with remote control and data logging capability.
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