The Keithley Instruments Model 2100 is a rugged and versatile 6 1/2-digit resolution digital multimeter. It has 0.003% one-year basic DC voltage accuracy at 10V range and 0.005% one-year basic resistance accuracy at 10kΩ range. At 6 1/2 digits, the multimeter delivers 50 triggered RDGS/sec via the USB remote interface. At the fast 4 1/2-digit setting, it reads over 2000 RDGS/ sec into its internal buffer. • Resolution: 6 1/2 digits • 5x7 dot-matrix VFD, dual displays with 3-color annunciators • Eleven standard measurement functions and eight math functions • Stability, accuracy, and speed • Built-in USB interfaces • DC voltage: 0.1V, 1V, 10V, 100V, and 1000V • AC voltage: 0.1V, 1V, 10V, 100V, and 750V • DC current: 10mA, 100mA, 1A, and 3A • AC current: 1A, and 3A • Two and 4-wire resistance: 100Ω, 1KΩ, 10KΩ, 100KΩ, 1MΩ, 10MΩ, and 100MΩ • Frequency: From 3Hz to 300kHz • Period measurement • Diode measurement • Continuity measurement for resistance Some additional capabilities of the Model 2100 include: • Temperature measurement using RTDs • Full math functions: dB, dBm, MX+B, ratio, percentage, Max/Min, null, and limits • TMC compliant USB remote control interface for PC control • Microsoft® Office Word, and Excel add-in tools for remotely storing and recalling the measured values from these applications