频率计 频率测试仪 频率测量 电话机频率计

Model 1856D

3.5GHz Frequency Counter

This reciprocal FREQUENCY COUNTER is a microprocessor-controlled instrument for frequency

measurement. Due to uniquely developed LSI circuitry in an expanding/reciprocal system,

high accuracy with 9-digit resolution is achieved with a one second gate time. It covers a frequency

range of from 0.1 Hz to 3.5 GHz based on a 10 MHz TCO (Temperature Controlled

Oscillator). Other features include:

■ RPM (Revolutions Per Minute) Measuring Function

■ External Frequency Standard Input with 9 Digit LED Display

■ Attenuator

■ Period

■Total

■ Low Pass Filter

■ Line Filter

■ RS-232 Interface

Also provided is a self-test function for a quick check of several operating modes. Each mode

can be selected by a front panel push button switch with automatic decimal points and indicators.

The high accuracy, sensitivity and versatility of this counter make it an extremely valuable

instrument to the scientist, engineer, experimenter and communications technician. Lightweight

and compact size make it practical for use by the hobbyist or field technician.