Keithley 2015 - Disassembly

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5

Disassembly

Table of Contents

Default Chapter1
- Service Manual1
- Safety Precautions5
- Table of Contents7
Performance Veriﬁcation15
- Introduction16
Performance Veriﬁcation16
- Veriﬁcation Test Requirements17
- Recommended Test Equipment18
- Recommended Veriﬁcation Equipment18
- Veriﬁcation Limits19
  - Example Reading Limit Calculation19
  - Calculating Resistance Reading Limits19
- Restoring Factory Defaults20
- Performing the Veriﬁcation Test Procedures21
  - Test Summary21
  - Test Considerations21
- Verifying DC Voltage22
- DCV Reading Limits23
- Verifying AC Voltage24
- ACV Reading Limits25
- Verifying DC Current26
- DCI Limits26
- Verifying AC Current27
- ACI Limits27
- Verifying Resistance28
- Verifying Temperature30
- Verifying Frequency31
- Verifying Total Harmonic Distortion32
- Verifying Function Generator Amplitude33
Calibration34
- Introduction35
- Environmental Conditions36
  - Warm-Up Period36
  - Line Power36
- Calibration Considerations37
- Calibration Code38
  - Front Panel Calibration Code38
  - Remote Calibration Code38
- Comprehensive Calibration39
  - Calibration Cycle39
  - Recommended Equipment39
- Recommended Equipment for Comprehensive Calibration39
2 Calibration41
- Low-Thermal Short Connections41
- Comprehensive Calibration Procedures41
  - DC Volts Calibration42
- Connections for DC Volts and Ohms Calibration42
- DC Volts Calibration Summary43
  - Resistance Calibration44
- Ohms Calibration Summary44
  - DC Current Calibration45
- Connections for DC and AC Amps Calibration45
- DC Current Calibration Summary45
  - AC Voltage Calibration46
- Connections for AC Volts Calibration46
- AC Voltage Calibration Summary46
  - AC Current Calibration47
  - Distortion Calibration47
- AC Current Calibration Summary47
  - Function Generator Calibration48
- Connections for Distortion Calibration48
- Connections for Function Generator Calibration48
- Distortion and Function Generator Calibration Summary48
Calibration51
- DC Voltage Calibration Programming Steps51
  - Resistance Calibration52
- Resistance Calibration Programming Steps52
  - DC Current Calibration53
- DC Current Calibration Programming Steps53
  - AC Voltage Calibration54
- AC Voltage Calibration Programming Steps54
  - AC Current Calibration55
  - Distortion Calibration55
- AC Current Calibration Programming Steps55
- Distortion and Function Generator Calibration Steps55
- Manufacturing Calibration57
- Recommended Equipment for Manufacturing Calibration57
  - Front Panel Manufacturing Calibration58
- Synthesizer Connections for Manufacturing Calibration58
  - Remote Manufacturing Calibration59
Routine Maintenance61
- Introduction61
  - Setting the Line Voltage and Replacing the Line Fuse61
  - Replacing the AMPS Fuse62
- Power Module62
- Power Line Fuse62
Routine Maintenance63
Troubleshooting64
- Introduction65
- Repair Considerations66
- Power-On Self-Test67
- Front Panel Tests68
  - KEY Test68
  - DISP Test68
4 Troubleshooting69
- Principles of Operation69
  - Power Supply69
- Power Supply Block Diagram69
- Digital Circuitry Block Diagram69
- Analog Circuitry Block Diagram69
- Distortion Digital Circuitry Block Diagram69
- Distortion Analog Circuitry Block Diagram69
- Sine Generator Circuitry Block Diagram69
- Power Supply Components70
  - Display Board71
  - Digital Circuitry72
  - Analog Circuitry74
  - Distortion Digital Circuitry76
  - Distortion Analog Circuitry78
  - Sine Generator Circuitry79
- Troubleshooting81
  - Display Board Checks81
  - Power Supply Checks82
  - Digital Circuitry Checks83
  - Analog Signal Switching States84
- DCV Signal Switching84
- ACV and FREQ Signal Switching84
- Ω 2 Signal Switching85
- Ω 4 Signal Switching85
- Ω 2/ Ω 4 Reference Switching85
- DCA Signal Switching86
- ACA Signal Switching86
- DCV Signal Multiplexing and Gain86
- ACV and ACA Signal Multiplexing and Gain86
- DCA Signal Multiplexing and Gain87
- Ω 2 Signal Multiplexing and Gain87
- Ω 4 Signal Multiplexing and Gain87
Troubleshooting88
- Switching Device Locations88
Disassembly89
- Introduction90
- Handling and Cleaning91
- Assembly Drawings93
Disassembly93
- Disassembly Procedures94
- Instrument Reassembly97
  - Input Terminal Wire Connections97
  - Power Module Wire Connections97
- Input Terminal Wire Colors97
- Power Module Wire Colors97
5 Disassembly98
- Changing Trigger Link Lines98
- Trigger Link Line Connections98
- Main CPU Firmware Replacement99
Replaceable Parts101
- Introduction102
- Parts Lists102
- Ordering Information102
- Factory Service102
- Component Layouts102
Replaceable Parts102
- DMM (Mother) Board Parts List103
- Display Board Parts List109
- Distortion (DSP) Board Parts List110
- Mechanical Parts List114
A Specifications123
- Accuracy Calculations123
- Optimizing Measurement Accuracy126
- Optimizing Measurement Speed126
B Calibration Reference127
Calibration Reference128
- Introduction128
- Command Summary129
- Remote Calibration Command Summary129
- Miscellaneous Calibration Commands131
- DC Calibration Commands135
- AC Calibration Commands140
  - Ac:step<N141
- Distortion and Function Generator Calibration Commands142
- Manufacturing Calibration Commands143
  - Ac:step<14|15143
  - DC:step0143
- Calibration Error Summary144
- Remote Error Reporting144
  - Error Summary144
- Detecting Calibration Step Completion147
C Calibration Program149
- Introduction150
- Computer Hardware Requirements150
- Software Requirements150
- Calibration Equipment150
- General Program Instructions151
  - Distortion Characteristics155
  - Optimizing Measurement Accuracy156

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