The Keithley 2100/220 is a 6½-digit USB multimeter engineered for precision measurements across R&D, test engineering, scientific research, and educational environments. This instrument delivers 0.0038% basic DC voltage accuracy on the 10V range and supports a comprehensive measurement suite including DC/AC voltage and current, two- and four-wire resistance, frequency, period, diode testing, capacitance, and temperature. The vacuum fluorescent display with three-color annunciators provides real-time feedback, while True RMS measurement ensures accurate AC waveform characterization. Built for both benchtop and automated test system integration, the 2100/220 combines laboratory-grade precision with practical affordability and rugged construction rated for bench, portable, and stacking applications.
## Technical Specifications
• **Resolution:** 6½ digits
• **DC Voltage Accuracy (1-year, 10V range):** 0.0038% basic
• **Resistance Accuracy (1-year, 10kΩ range):** 0.005% basic
• **Maximum Input:** 1000V all ranges (2-wire input)
• **Maximum AC Voltage:** 750V
• **Maximum AC/DC Current:** 3A
• **Maximum Resistance Measurement:** 0.1GΩ (100MΩ)
• **True RMS Capable:** Yes
• **Operating Temperature:** 5°C to 40°C
• **Dimensions:** 375 mm (L) × 256 mm (W) × 112 mm (H)
• **Weight:** 4.1 kg
## Key Features
• **Measurement Functions:** DC voltage, AC voltage, DC current, AC current, two-wire and four-wire resistance, frequency, period, diode test, capacitance, temperature
• **High-Speed Acquisition:** 50 triggered readings/s at 6½ digits via USB; over 2000 readings/s at 4½ digits in internal buffer mode
• **Math Functions:** Ratio, percentage, min/max, NULL, limits, mX+b, dB, and dBm
• **Display:** 5×7 dot matrix vacuum fluorescent display (VFD) with three-color annunciators
• **Input Selection:** Selectable front/rear inputs for bench or rack configurations
• **Rugged Design:** Rubber bumpers for protection in various deployment scenarios
## Compatibility & Integration
• **USB Interface:** TMC-compliant USB 2.0 connectivity with SCPI programming support
• **Software Drivers:** LabVIEW driver and Keithley I/O Layer included
• **PC Integration:** KI-Link Add-in for Microsoft Word and Excel graphing and data sharing
• **Startup Software:** KI-Tool utility included
• **Standards:** EN 61326-1, EN 61010-1, IEC 801-2/3/4, RoHS compliant, CE marked, UL listed
