The Array M3500A 6 1/2 digit multimeter is a versatile testing tool. In addition to the standard functions you've come to expect from a high quality digital multimeter, this unit also offers improved accuracy, expanded memory, new triggering capabilities, extraordinary sampling/transferring speed and built-in USB and GPIB connectivity. The 6 1/2 digit M3500A DMM is designed with 7 1/2 digit techniques to provide user a stable, faster and accurate measurement. The M3500A is engineered with to reach high performance: Both of the sampling rate and the data transfer rate can achieve 2000 readings per second.