The 5328A Universal Counter makes frequency, period, multiple point average, time interval, time interval average, totalize, ratio, voltage and electronically controlled totalize measurements. Burst and CW measurements to 100MHz. Resolution of 100 ns single shot time interval measurements. Time interval averaging has a resolution better than 10 ps for repetitive time intervals as short as 100 ps. Marker outputs (operational to 100MHz) shows real time triggering for use with oscilloscope monitoring. Timebase is 10MHz with stability <3x10E-07 per month. 9-digit display with 9th digit used only with channel C functions and zero suppression to left of reading. Switchable x1 and x10 attenuators for each of the two inputs.