SDM4055A / SDM4055A-SC 5½ Digital Multimeters
Main Features
- Real 5½ digits readings resolution (220,000 counts)
- Reading rate from 5 rdgs/s to 4.8k rdgs/s
- 512 MB RAM, capable of saving up to 2M readings for caching
- Equipped with EasyDMM-X host computer control and sampling software
- 5-inch true color TFT-LCD display










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True 5½-digit precision
SDM4000A Series offers 5½-digit (220,000 counts) with a full-scale display range from -219,999 to +219,999. Its exceptional performance ensures precise capture of subtle current variations and large voltage fluctuations.

Four Display Modes
SDM4055A 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.

Advanced Math Functions
SDM4055A 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.

Remote Control & Programming
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.

Specifications
DC Voltage | 200 mV ,2 V,20 V,200 V,1000 V |
DC Current | 200 μA,2 mA,20 mA,200 mA,2 A,10 A |
AC Voltage | True-RMS,200 mV,2 V,20 V,200 V,750 V |
AC Current | True-RMS,200 μA,2 mA,20 mA,200 mA,2 A,10 A |
2/4-Wire Resistance | 200 Ω,2 KΩ,20 KΩ,200 KΩ,1 MΩ,10 MΩ,100 MΩ |
Capacitance | 2 nF,20 nF,200 nF,2 μF,20 μF,200 μF,2 mF,20 mF,100 mF |
Continuity Test | Range is fxed at 2 kΩ |
Diode Test | Adjustable range is 0 - 4 V |
Frequency Measurement | 3 Hz~1 MHz |
Temperature | Support for TC and RTD sensor |
Math Function | Max, Min, Average, Standard Deviation,dBm/dB, Relative Measurement ,Pass/Fail Histogram, Trend Chart, Bar Meter, etc. |
Dispay | 5-inch TFT-LCD display, 800 * 480 |
Size | 256 MB Nand Flash |
Standard Interface | USB Device, USB Host, LAN |
Optional Interface | USB-GPIB Adapter and Scanner Card SC1016 |
Scanner Card SC1016 | Only for SDM4055A-SC |
Model
Reading resolution
DC voltage measurement range
AC voltage measurement range
DC current measurement range
AC current
Scanner card
SDM4055A
5 1/2
200 mV ~ 1000 V
200 mV ~ 750 V
200 μA ~ 10 A
20 mA ~ 10 A
Not Support
SDM4055A-SC
5 1/2
200 mV ~ 1000 V
200 mV ~ 750 V
200 μA ~ 10 A
20 mA ~ 10 A
Support