Keithley KEI 181 Service free download

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Service Manual Model 181 Digital Nanovoltmeter 01981, Keithley Instruments, Inc. October 1981, Cleveland, Ohio, U.S.A. Document Number 30816 Model 181 Service Manual Addendum INTRODUCTION This addendum to the Model 181 Service Manual is being provided in order to supply you with the latest information in the least possible time. Please incorporate these changes into the manual before servicing the Model 181. Model 262 Low Thermal Voltage Divider This addendum concerns availability of the Keithley Model 262 Low Thermal Voltage Divider, which is recommended for verifying accuracy and calibrating the Model 181 mV ranges. The Model 262 is a precision low thermal divider with divider ratios of 101:1, lO?l, lO":l, and lO?l. A low thermal male-to-male output cable is included with the Model 262. Note that Model 181 veri- fication and calibration procedures that use the Model 262 are included in the Model 262 Instruc- tion Manual. Section 2, page 2-2: Include the Model 262 Low Thermal Voltage Divider in the list of available accessories. Table 3-1, page 3-1: Replace Item B in the table with the Model 262 Table 5-1, page 5-l: Replace Items B and F with the Model 262 I TABLE OF CONTENTS SECTION TITLE PAGE 1 Generallnformation ... l-l Introduction ... l-2 Warranty Information ... 1-3 ManualAddenda ... 1-4 Safety Symbols and Terms. ... 2 Accessories ... ... 2-l General ... 2-2 Model 1463 Low-Thermal Connection Kit ... 2-3 Model 1484 Refill Kit ... 2-4 Model 1485 Female Connector ... 2-5 Model1486MaleConnector ... 2-6 Model 1488Shorting Plug ... 2-7 Model 1503 Low-Thermal Solder and Flux ... 2-6 Model1506lnputCable ... 2-9 Model1507lnputCable ... z-10 Model 1615Maintenance