Low-Noise-System Multimeter 7 1/2 Digits. The Keithley 2010 is a 7-1/2-digit Low Noise, Autoranging Digital Multimeter and combines high resolution with the high speed and accuracy needed for production applications such as testing precision sensors, transducers, A/D and D/A converters, regulators, references, connectors, switches, and relays. It is based on the same high speed, low noise A/D converter technology as the Models 2000, 2001, and 2002. 7-1/2 digit resolution Noise floor: 100nV rms DCV repeatability: 7 ppm Built-in 10-channel scanner mainframe Dry circuit and low power measurement mode 15 measurement functions including support for RTD and thermocouple temperature measurements Built-in ratio measurement function GPIB and RS-232 interfaces