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Counter channels are used to perform counting and frequency measurements. Typical applications are:
Different cards offer different counting possibilities. By far the most enhanced counters are those on Orion 1624 or Orion 1616. A special mode, called super-counter, allows exact frequency measurement and direct support of the most commonly used sensors. All other counters offer only a specific subset of operation.
Basically the input to the counter should be a clean digital signal, where most of the cards support 5 V levels as the default (some cards offers higher input signals or even variable trigger levels). If the user has lower or higher signals, some conditioning in front of the counters should be used.
One of the practical applications where the counters are often used will be more closely examined:
