The Teledyne LeCroy T3DMM4-5 is a 4.5-digit digital multimeter engineered for precision measurement across a broad spectrum of electrical parameters. Its 4.3-inch color TFT-LCD display (480×272 pixels) renders measurements in multiple formats—numerical data, histograms, trend charts, bar graphs, and statistical summaries—enabling real-time analysis and decision-making in the field or lab. The instrument delivers true-RMS AC voltage and current measurements with dedicated support for non-sinusoidal waveforms, critical for modern power electronics and variable-frequency drive testing.
Technical Specifications
Display & Resolution
• 4.3-inch color TFT-LCD, 480×272 pixel resolution
• Real 4.5-digit display (60,000 counts)
• Selectable measurement rates: 5 readings/s (Slow, 4.5-digit), 50 readings/s (Middle, 4.5-digit), 150 readings/s (Fast, 3.5-digit)
Measurement Functions
• DC voltage: 600 mV, 6 V, 60 V, 600 V, 1000 V ranges with 10 MΩ ± 2% input impedance
• True-RMS AC voltage: 600 mV, 6 V, 60 V, 600 V, 750 V ranges; DC current to 10 A; resistance (2-wire and 4-wire); capacitance; frequency; period; temperature
• Min/Max/Average, Standard Deviation, dBm/dB, Pass/Fail, and Relative measurements
• AC frequency response to 100 kHz with accuracy derating above 50 kHz
Input Protection & Reliability
• 1000 V DC input protection on voltage ranges; 10 A maximum DC current with fuse protection
• Transient overvoltage withstand: 4000 Vpk
• CMRR: 120 dB (1 kΩ unbalanced resistance in LO lead, ±500 VDC max)
• NMRR: 60 dB at slow measurement rate
• Input bias current: <90 pA at 25°C
Environmental & Storage
• Operating temperature: 0°C to 50°C (full accuracy)
• Storage temperature: -20°C to 70°C
• Humidity: 5% to 90% RH (non-condensing) to +30°C; derated to 50% RH at +40°C
• Altitude: Up to 3000 meters; Pollution Degree: 2
• Warm-up time: 30 minutes for full accuracy
Connectivity & Data Management
• 1 Gb flash memory for configuration and data storage; U-disk external storage support
• USB device, USB host, and LAN interfaces
• SCPI command remote control capability
– Key Features
• Multi-format display modes support histogram, trend, and statistical analysis workflows
• True-RMS measurement capability ensures accuracy on harmonic-rich and distorted signals
• Flexible measurement rate selection balances resolution against update speed
• High input impedance (10 MΩ) minimizes loading on high-impedance circuits
• Extensive overvoltage protection safeguards against transients and field faults
– Typical Applications
• Power electronics and variable-frequency drive commissioning
• Automotive electrical system diagnosis and bench testing
• Industrial control and automation troubleshooting
• Laboratory research and data logging workflows
• Field service and on-site equipment maintenance
– Compatibility & Integration
Remote measurement and control via SCPI commands over USB and LAN enables integration into automated test benches and remote monitoring systems. Native support for external USB storage simplifies data transfer and archival.
