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SIGNAL RECOVERY is a world leader in the design and manufacture of lock-in amplifiers, signal averagers, amplifiers, light choppers and specialized voltmeters.
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Model 3820
Universal Counter
The Model 3820 Universal Counter allows up to eight measurement outputs to be generated as a function of time, these being:
- Frequency
- Average period
- Average duty cycle
- Average pulse-high time
- Average pulse-low time
- Event counts
- Logic level (input voltage above/below threshold)
- Time
The counter is principally intended for counting bi-level signals, which have two distinct voltage levels and clean transitions between them. Measurements are updated at one of five user selectable intervals in the range 5 ms to 100 ms. The module is powered and controlled directly from the PC’s USB port. Operation is entirely via software, with no manual switches or settings.
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