BBK Electronics 1856D User Manual

1

10 1-4. Supplied Accessories l User’s Manual --------------------------------------------------------------1 l BNC cable --------------

11 2-5. Warming-Up Allow at least 30 minutes for the unit to warm up so that it can stabilize. 3. OPERATION 3-1. Contr

12 UNIT INDICATOR: When lit, indicates that the frequency displayed is in MHz, KHz, Hz and period is in nano, micro, or milli (n/u/m) Sec. H

13 the GATE TIME. d. TOTAL A: When this mode is selected, the unit counts the cycles of the signal at input A and continuously displays t

14 base signal can be monitored or through which an external time base signal can be applied (see item above). The external signal should have a vo

15 e. Engaging the HOLD switch “freezes” the display at the existing reading. When HOLD is released, the display is updated and resumes counting. f.

16 3-4. Period Measurements a. Apply the signal to be measured at input A. b. Select the resolution using the GATE TIME selector switch. c. The per

17 3-7. Use of RS-232C Serial Interfacing 1) Hardware/Software Requirements IBM PC/XT/AT or compatible computer Microsoft Windows Seria

18 4. MAINTENANCE CAUTION FOR SAFETY, IT IS ESSENTIAL TO PROPERLY MAINTAIN AND SERVICE THIS INSTRUMENT WARNING VOLTAGES WITHIN THIS INSTRUMENT ARE

19 around the window cover areas where water could leak into the instrument while drying. 5. OTHER 5-1. BNC Cable Considerations The acc

2 WARRANTY Warranty service covers a period of one year from the date of original purchase. In case of technical failure within one year, repair ser

20 5-2. Attenuator Probes When measuring signals at input A that will exceed its maximum input voltage level (See FIG. 1), a 10:1 attenuating probe s

21 Limited One-Year Warranty B&K Precision Corp. warrants to the original purchaser that its product and the component parts thereof, will be f

22 Service Information Warranty Service: Please return the product in the original packaging with proof of purchase to the below address. Clearl

23 22820 Savi Ranch ParkwayYorba Linda, CA 92887 USA TEL: 714-921-9095 FAX: 714-921-6422 PN: 481-532-9-001 Printed in Korea

3 Introduction Thank you for purchasing our product. Electronic measuring instruments produced by us are high technology products made under stri

4 CONTENTS 1. PRODUCT DESCRIPTION 1-1. Introduction ----------------------------------------------------- (5) 1-2. Technical Specification

5 1-1. Introduction This reciprocal FREQUENCY COUNTER is a microprocessor-controlled instrument for frequency measurement. Due to unique

6 1-2. Technical Specifications g INPUT A CHARACTERISTICS h FREQUENCY RANGE: 0.1 Hz to 100 MHz (DC coupled) 30 Hz to 100 MHz (AC coup

7 h Max. Input Voltage Level FIG. 1 MAX. Input Level. (Input A) h PERIOD RANGE: 10 nS to 10 S DISPLAY: n/u/m (nano/micro/milli) Sec. w

8 h Resolution and Number of Displayed Digits Time Base Selector INT EXT INT EXT INT EXT INT EXT Gate Time 0.01S 0.1S 1S 10S Number Of

9 h GATE TIME: Depending on input frequency < 10 mS----------- Somewhere between 0.9 and 9mS < 0.1 S------------- Somewhere between 9 an