Tektronix DMM4040 Digital Precision Multimeter, 6-1/2 Digit

The Tektronix DMM4040 is a 6.5-digit benchtop digital multimeter engineered for precision measurement across voltage, current, resistance, frequency, and period. This instrument delivers basic DC voltage accuracy of 0.0024% over one year, with resolution extending to 100 nV for voltage, 100 pA for current, and 10 µΩ for resistance. The dual graphical display enables simultaneous observation of two parameters or real-time trend analysis via TrendPlot™ paperless recording, histogram visualization, and measurement statistics modes—capabilities that accelerate design validation and field troubleshooting.

– Technical Specifications

• Resolution: 6.5 digits
• DC Voltage Accuracy: 0.0024% (1 year)
• Voltage Range: 100 nV to 1000 V
• Current Range: 100 pA to 10 A
• Resistance Range: 10 Ω to 1 GΩ
• Input Impedance: 10 MΩ (default); 200 kΩ on 200 mV and 2 V ranges
• Safety Rating: CAT I 1000 V, CAT II 600 V
• Weight: 3.6 kg

– Key Features

• Measurement functions: DC voltage, AC voltage (true RMS, AC + DC), DC current, AC current (true RMS, AC + DC), resistance (including 2×4 wire), frequency, period, diode test, continuity test
• Dual graphical display with TrendPlot™ mode for time-series data recording
• Histogram and statistics modes for distribution analysis
• USB host port for data and settings storage

– Connectivity & Integration

RS-232C (1200–230400 baud), LAN (10/100Base-T with DHCP), and IEEE 488.2 (GPIB) enable PC control and remote operation. Supplied with USB-to-RS-232 adapter cable and National Instruments LabVIEW SignalExpress TE Limited Edition software.