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Keithley Manuals
Multimeter
197
Instruction manual
Keithley 197 Instruction Manual
Autoranging microvolt dmm
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Instructions manual
(40 pages)
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Introduction
Features
Safety Symbols and Terms
Section 1-General Information
Warranty Information
Manualaddenda
Initial Operation
Specifications
Unpacking and Inspection
Using the Model 197 Manual
Accessories
Section 2-Bench Operation
High Energy Circuit Safety Precautions
Introduction
Preparation for Use
Linepower
Batterypackpower
Battery Charging
Front Panel Familiarization
Display
Front Panel Controls
Input Terminals
Current Fuse Replace
Basic Bench Measurements
Powerup
Relative Mode
Errormessages
Operating Conditions
Environmental Conditions
Maximum Allowable Inputs
Warmup
Model 197 Maximum Allowable Inputs
Ent
TRMS AC Voltage Measurements
DC Voltage Measurements
Microvolt Measurement Considerations
TRMS AC Voltage Measurements
Resistance Measurements
Current Measurements (DC or TRMS AC)
Four Terminal Resistance Measurement
Four Terminal Zeroing
AC Plus DC Measurements
Db Measurements
Two Terminal Resistance Measurement
Current Measurements between 2
Current Measurements up to 2000Ma
Db Measurements Considerations and Applicatio
Levels for Other Reference Impedances
MIN/MAX and 100 Point Data Logger Operatio
Diode Test
TRMS Considerations
AC Voltage Offset
TRMS Measurement Comparison
Crestfactor
Extended Frequency Response
Comparison of Average and TRMS Meter Readings
Section 3- Performance Verification
Initial Conditions
Recommended Test Equipment
Verification Procedure
DC Voltage Accuracy Check
AC Voltage Accuracy Check
Connections for ACV Verification
Resistance Accuracy Check
Connections for DCV Verification
Limits for DC Voltage Verification
Limits for AC Voltage Verification
Limits for Resistance Verification
DC Current Accuracy Check
Limits for DC Current Verification
AC Current Accuracy Check
Connections for DC Current Verification (2000Ma to 20A)
Connections for DC Current Verification (200Pa to 2000Ma)
Limits for AC Current Verification
Section 4-Theory of Operation
Analog Circuitry
Multiplexer
Input Buffer Amplifier
Introduction
Overall Functional Description
JFET Multiplexer
Simplified Schematic of the Input Buffer Amplifier
Input Configuration During 2- and 4-Terminal Resistance Measurements
AC Converter
Resistance Measurement Simplified Circuit
Pia
Display Board
Digital Calibration
Model 1978 Battery Option
Section 5-Maintenance
Battery Pack (Model 1978) Installation
Introduction
Top Cover Removal/Installation
Fuse Replacement
Line Fuse Replacement
Current Fuse Replacement
Line Voltage Selection
Model 197 Miscellaneous Parts
Front Panel Calibration
Recommended Calibration Equipment
Environmental Conditions
DC Voltage Calibration
AC Voltage Calibration
Frequency Compensation
DC Voltage Calibration Configuration
AC Voltage Calibration Configuration
Resistance Calibration
Calibration Storage
Troubleshooting
Powerupsequence
Self Diagnostic Program
Power Supply and Battery Pack (Model 1978) Checks
A / D Converter and Display
Signal Conditioning
Segment Identification
Model 197 Troubleshooting Mode
Special Handling of Static Sensitive Devices
A / D Converter
Section 6-Replaceable Parts
Model 197 Static Sensitive Devices
Introduction
Ordering Information
Factory Service
Schematic Diagrams and Component Location Drawings
Replaceable Parts
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Troubleshooting
Troubleshooting
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Special Handling of Static Sensitive Devices
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Summary of Contents for Keithley 197
Page 1
(217) 352-9330 | Click HERE Find the Keithley 197 at our website:...
Page 2
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Page 3
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Page 4: Table Of Contents
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Page 5
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Page 7
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Page 8
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Page 9
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Page 10: Section 1-General Information
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Page 11: Specifications
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Page 12: Accessories
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Page 13: Section 2-Bench Operation
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Page 14: Batterypackpower
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Page 15: Front Panel Controls
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Page 16: Errormessages
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Page 17: Powerup
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Page 18: Ent
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Page 19: Microvolt Measurement Considerations
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Page 20: Resistance Measurements
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Page 21: Current Measurements (Dc Or Trms Ac)
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Page 22: Ac Plus Dc Measurements
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Page 23
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Page 24: Db Measurements Considerations And Applicatio
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Page 25: Min/Max And 100 Point Data Logger Operatio
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Page 26: Ac Voltage Offset
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Page 27
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Page 28: Comparison Of Average And Trms Meter Readings
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Page 29: Section 3- Performance Verification
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Page 30: Dc Voltage Accuracy Check
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Page 31: Resistance Accuracy Check
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Page 32: Dc Current Accuracy Check
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Page 33: Ac Current Accuracy Check
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Page 34: Limits For Ac Current Verification
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Page 35: Section 4-Theory Of Operation
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Page 36
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Page 37: Jfet Multiplexer
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Page 38: Input Configuration During 2- And 4-Terminal Resistance Measurements
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Page 39: Ac Converter
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Page 40: Pia
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Page 41: Model 1978 Battery Option
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Page 42: Section 5-Maintenance
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Page 43: Line Voltage Selection
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Page 44: Model 197 Miscellaneous Parts
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Page 45: Front Panel Calibration
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Page 46: Dc Voltage Calibration
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Page 47: Ac Voltage Calibration Configuration
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Page 48: Resistance Calibration
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Page 49: Troubleshooting
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Page 50: Power Supply And Battery Pack (Model 1978) Checks
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Page 51
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Page 52: Special Handling Of Static Sensitive Devices
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Page 53
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Page 54: Model 197 Static Sensitive Devices
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Page 55: Section 6-Replaceable Parts
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Page 56
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Page 57
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Page 58
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Page 59
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Page 60
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Page 61
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Page 62
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Page 63
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Page 64
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Page 65
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Page 66
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Page 67
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Page 68
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Page 69
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Page 70
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Page 71
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Page 72
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Page 73
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Page 74
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