Table Of Contents - Keithley 7057A Instruction Manual

TABLE OF CONTENTS
SECTION 1-GENERAL INFORMATION
1.1 Introduction . . . . .. .. . . . . .. . . . . . . . . . . . . . .. .. . . . . .. .. . . . . . . 1
1.2 Warranty Information . . . . . . . . . . . . . . . .. . . .. . . . . . . . . .. . . . . . . 1
1.3 Manual Addenda......................................... 1
1.4 SafetySymbolsandTerms .... ..... ... .. .. ... .. .. ... .. .. .. 1
SECTION 2-OPERATION
2. 1 Introduction .. .. .. .. .. .. .. .. .. .. . .. . . . . .. .. . .. .. . . . . .. . . 3
2.2 Wiring . . . . . . . . . .. . . . . . . . .. . . . . . . .. . . . . . . . . . . . .. . .. .. . . . . 3
2.3 Operating Considerations .. .. .. . . . .. . . . . . . .. .. . . . .. . .. .. . . . 4
2.4 Operating Hints . .. . .. . . .. .. .. . . . . .. . . . . .. . .. .. .. . .. . . . . . . 4
2.5 Thermocouple Measurement Considerations . . . . . . . . . . . . . . . . . . 5
26 Measurement Procedure . . . . . . . . . . . . .. . . . .. .. . . . . . . . . . . . .. 6
2.7 Switch Terminology...................................... 7
SECTION 3-SERVICING INFORMATION
3. 1 Calibration Procedure .. .. . .. . . . . . . .. . . . . .. . . . . . . .. .. .. . . . . 21
3.2 Calibration Procedures . . . . .. . . . . . .. . .. . .. .. .. .. . . . . .. . . . .. 21
3.3 Test of Calibration .. . . . . . . .. . . . . . .. . .. . .. . .. . . . . . . . . . . . . . . 21
3.4 Channel Isolation. . . . . . . . .. .. . . . . . .. .. . . . .. . . . . . . .. . . .. .. . 21
3.5 Input Isolation, Common Mode.. . . . . .. . . . . .. . . . . . . . .. . . . . . . 22
SECTION 4-REPLACEABLE PARTS
4.1 Introduction . . . .. .. . . . . . .. .. . . . . . .. . . . .. . . .. . . . . . . . . . . . . . 23
4.2 Replaceable Parts . .. . . . . .. . . . . .. . . .. . . . . . .. . . . . . . .. . . . . .. 23
4.3 Ordering Information .. .. .. . . . .. .. . . .. .. .. .. . .. .. .. . .. .. . . 23
4.4 Factory Seivice . . .. . . . . .. . .. . . .. .. . . . . . . . . . . . .. .. . .. .. . . . 23
4.5 Component Layout and Schematic Diagram . . . . . . . . . . . . . . . . . . 23
LIST OF FIGURES
1 Typical Thermocouple Connections . . .. . . .. .. .. . .. . .. . . . . . . . 3
2 Plug-In Board Assembly . .. . . . . . . .. . .. . . . .. .. . . . . . .. . . . . .. . 4
3 Using GUARD Connection.. . .. .. . . . . . . . . . . .. . . . . . .. . . . . . .. 5
4 Typical Multiple Channel Analog Connections . . . . . . . . . . . . . . . . . 5
5 Typical Thermocouple Measurements . . . . . . . . . . . . . . . . . . . . . . . 6
6 Switch Terminology .. . . .. .. . . . . . .. . . . . .. . . . . . . . . . . . .. . . . . 7
7 Channel'lsolation Test Setup . . . . . . .. . . . . . . .. . . . . .. . .. .. . . . . 22
8 Common Mode Isolation Test Setup . . . . . . . .. . . . . .. . .. . . . . . . 22
9 Model 7057A, Component Location Drawing....... . . . . . . . . . . 26
10 Model 7057
A,
Schematic Diagram .. . . . . . .. . . . . . . . . . . .. . . . . .
27
LIST OF TABLES
1 SummaryofTemperatureMeasurementProcedure... ... . . . . 7
2 NBS QuarticCoefficientsforTypesS, A, B, E,J, KandT....... 8
3 Recommended Test Equipment. . . .. . .. . . . .. .. . . . .. . . .. . .. . . 21
4 Model 7057A Replaceable Parts .. .. .. . . . . . .. .. . . . . . .. . . . .. . 23
5 Model 7057A Replaceable Parts (Mechanical)............. . . . . 24