Keithley 150A(Models150A 252C150AR) free download

File name 150A(Models150A_252C150AR).pdf

INSTRUCTION MANUAL MODELS 15OA, 150AR MICROVOLT-AMMETERS WARRANTY We warrant each of our products to. be free from defects in material and workmanship. Our obligation under this warranty is to repair or replace any instrument or part thereof (except tubes and batteries) which, within a year after shipment, proves defective upon examination. To exercise this warranty, contact your Keithley field engineering representative. You will be given assistance and shipping instructions. REPAIRS AND RECALIBRATION Keithley Instruments and its international dis- tributors maintain complete repair facilities. To insure prompt repair or recalibration service, please contact your Keithley field representative before returning the instrument. Estimates for repairs, normal recalibrations, and calibrations traceable to the National Bureau of Standards are available upon request. MODEL 150A CONTEXTS TABLE OF CONTENTS section Page Section Page I. INTRODUCTION. . . 1-l D. Zero Suppression. . . . . . 4-2 E. Other Controls. . . . . 4-2 II. SPECIFICATIONS . 2-l F. Power Supply. . . . . . . 4-2 III. OPERATION . . 3-l V. MAINTENANCE. . . . . . 5-l A. Operating Controls. 3-l Trouble-Shooting. . . . 5-l B. Preliminary Set-up. 3-l Excessive Output Noise. . 5-l C. General Precautions 3-2 Output Not Zero . 5-2 D. Measuring Voltages. 3-3 220-Volt Operation. . . 5-2 E. Measuring Current . 3-3 F. Other Applications. 3-3 VI. REPLACEABLE PARTS . . . . 6-1 IV. CIRCUIT DESCRIPTION 4-l Models 150A, 150AR Replaceable Parts List . . . . 6-2 A. Input Circuit , . . 4-l Model 1501 Replaceable Parts B. AC Amplifier. . . 4-l List... 6-7 C. DC Amplifier. . . . 4-l Model 1502 Replaceable Parts