BK 1856D_datasheet 电路图.pdf

B&K Precision Corporation 22820 Savi Ranch Parkway, Yorba Linda, CA 92887 Tel: 714-921-9095, Fax: 714-921-6422 Specifications subject to change without notice Data Sheet Range3.5GHz FUNCTIONS Frequency Totalize Period Time Base Stability1ppm Best Resolution(INT)10 nHz No. of Digits9 Display Hold Low Pass Filter Sensitivity30 mVrms Self Test Model 1856D 3.5GHz Frequency Counter Model 1856D 3.5GHz Frequency Counter This reciprocal FREQUENCY COUNTER is a microprocessor-controlled instrument for frequen- cy 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 fre- quency 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 indica- tors. 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. Specifications model 1856D RadioFans.CN 收音机爱 好者资料库