The Hewlett-Packard Model 5316A is a universal counter, measuring signals over a range of DC to 100 MHz. The 5316A measures Frequency, Period, Time Interval, Time Interval Average, Time Interval Ho!doff (delay), and Ratio. A Totalize function with manual or external gating is also provided. All measurements except Totalize are displayed in engineering notation with up to eight digits of resolution. In addition, the 5316A may be programmed via the Hewlett Packard Interface Bus (HP-18).