HP 5328A User Manual page 18

Model 5328A
Operation
SECTION Ill
OPERATION
3-1. INTRODUCTION
3-3. BASIC COUNTER OPERATION
pel.
t
(1)
3-5. Frequency
3-6. The counter measures the frequency f by accumulating the number of cycles n of the input
signal that occurs over the time period t. The basic counter elements necessary to perform this
measurement are shown in Figure 3-1.
INPUT INPUT AMP
SIGNAL & TRIGGER DECADE COUNTING
ASSEMBLIES
MAIN GATE
FLIP FLOP DISRLAN.
TIME BASE DECADE
OSCILLATOR DIVIDERS
Figure 3-1. Basic Elements of the Frequency Counter