Feature overview The Model 2015 is a 6 1⁄2-digit high-performance digital multimeter. It has 0.002% 90-day basic DC voltage accuracy and 0.008% 90-day basic resistance accuracy. At 6 1⁄2-digits, the multimeter delivers 50 triggered readings/sec over the IEEE-488 bus. At 4 1⁄2-digits, it can read up to 2000 readings/sec into its internal buffer. The Model 2015 has broad measurement ranges: THD, THD+n, and SINAD from 20Hz to 50kHz with 0.0001% (0.00001 dB) resolution. Frequency spectrum analysis from 20Hz to 50kHz (Model 2015P only). DC voltage from 0.1μV to 1000V. AC (RMS) voltage from 0.1μV to 750V, 1000V peak. DC current from 10nA to 3A. AC (RMS) current from 1μA to 3A. Two and four-wire resistance from 100μ Ω to 120MΩ. Frequency from 3Hz to 500kHz. Thermocouple temperature from -200°C to +1372°C. Some additional capabilities of the Model 2015 include: Full range of functions — In addition to those listed above, the Model 2015 functions include period, dB, dBm, continuity, diode testing, mX+b, and percent. Optional scanning — For external scanning, the Model 2015 is compatible with Keithley's Model 7001 and 7002 switch matrices and cards. Programming language and remote interfaces — The Model 2015 has the SCPI programming language and two remote interface ports (IEEE-488/GPIB and RS-232C). Reading and setup storage — Up to 1024 readings and two setups (user and factory defaults) can be stored and recalled. Closed-cover calibration — The instrument can be calibrated either from the front panel or remote interface.