Part 2

EXAMPLE 10PERIOD MEASUREMENTSExample 3497A Configurations 595DESCRIPTIONThe 100 kHz Reciprocal Counter assembly (Option 060) can be used for two primaryfunctions: counting operations (count upldown) and periodlpulse width measurementsof input signals. In this example, we'll show how to use the counter assembly tomeasure the period of a 100 Hz square wave input using a read without waittechnique.PROCEDURETo illustrate period measurements with the Option 060 assembly, we'll input a 100Hz square wave signal and use an open collector input as shown in Figure 197. We'llaverage 1000 periods of the input (for greater accuracy) and then show how partialresults can be displayed by using the read without wait command.CONFIGURATIONFigure 197 shows how to configure the Option 060 assembly using an open collectorinput and a user-supplied pullup on the output. Note that a level change (programmablefrom high to low or low to high) is always available at the OUTPUT HIterminal of the assembly whenever measurement complete occurs.Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com