B&K Precision 1856D 3.5 GHz 9 Digit Multifunction Counter

The B&K Precision 1856D 3.5 GHz 9 Digit Multifunction Counter is a 3.5 GHz 9 digit display frequency counter that measures frequencies, periods, and totals. This microprocessor-controlled device has a maximum input of 3V and an RS232 interface. The high accuracy, sensitivity and versatility of this counter make it an extremely valuable instrument to scientists, engineers, experimenters and communications technicians.