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Tektronix TDS2012C Service Manual
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For
information
on
installing
and
oper
ating
your
TDS2000C
or
TDS1000C-EDU
Series
Digital
Storage
Oscilloscope,
re
fer
to
the
user
manual
for
your
product.
The
user
manu
als
are
available
in
eleven
languages
and
are
on
the
W
eb
at
www
.tektronix.com/manuals.
TDS2000C
and
TDS1000C-EDU
Series
Oscilloscope
Service
Manual
19
30
32
Table of Contents
Table of Contents
3
General Safety Summary
8
Service Safety Summary
10
Preface
11
Manual Conventions
11
Related Documentation
11
Specifications
13
Signal Acquisition System Characteristics
13
Table 1: Signal Acquisition System Characteristics
13
Time Base System
19
Table 2: Time Base System
19
Triggering System
21
Table 3: Triggering System
21
Display Specifications
25
Table 4: Display Specifications
25
Interfaces and Output Ports Specifications
26
Data Handling Characteristics
26
Power Distribution System
26
Table 5: Interfaces and Output Ports Specifications
26
Table 6: Data Handling Characteristics
26
Table 7: Power Distribution System
26
Mechanical Characteristics
27
Environmental Performance
27
Data Logging System Characteristics (Not Available on TDS1000C-EDU Models)
27
Table 8: Mechanical Characteristics
27
Table 9: Environmental Performance
27
Limit Testing System Characteristics (Not Available on TDS1000C-EDU Models)
28
Table 10: Data Logging System Characteristics (Not Available on TDS1000C-EDU Models)
28
Table 11: Limit Testing System Characteristics (Not Available on TDS1000C-EDU Models)
28
Where to Find Operating Information
31
Theory of Operation
33
System Level Block Diagrams
34
Figure 1: Module-Level Block Diagram (2-Channel)
34
Figure 2: Module-Level Block Diagram (4-Channel)
35
Main Board
36
Acquisition System
36
Processing and Display System
37
Input Signal Interface
37
Probe Compensation
37
External Trigger
37
Main Board Power
37
Power Supply
37
Display Module
38
Front Panel
38
Two-Channel Oscilloscopes
38
Four-Channel Oscilloscopes
38
Performance Verification
39
Required Equipment
39
Table 12: Performance Verification
39
Test Record
40
Table 13: Test Record
40
Performance Verification Procedures
41
Self Test
41
Self Calibration
41
Check DC Gain Accuracy
41
Check Bandwidth
43
Check Sample Rate Accuracy and Delay Time Accuracy
44
Check Edge Trigger Sensitivity
45
Check External Edge Trigger Sensitivity
47
Check Vertical Position Accuracy
48
Figure 3: Example of a Line Graph for the Vertical Position Accuracy Test
51
Adjustment Procedures
53
Required Equipment
53
Adjustment Procedure
53
Table 14: Required Equipment
53
Enable the Service Menu
54
Figure 4: Adjustment Setups
55
Adjustment Procedure
56
Table 15: Adjustment Steps
57
Maintenance
61
Preventing ESD
61
Inspection and Cleaning
61
General Care
62
Interior Cleaning
62
Exterior Cleaning
62
Exterior Inspection
63
Interior Inspection
63
Table 16: External Inspection Checklist
63
Cleaning Procedure, Interior
64
Table 17: Internal Inspection Checklist
64
Removal and Installation Procedures
66
Summary of Procedures
66
Figure 5: Locator for Trim and Cabinet Removal (4-Channel Model Shown)
67
Figure 6: Locator for Internal Modules (4-Channel Model Shown)
67
Required Tools
68
Rear Feet
68
Flip Feet
69
Front-Panel Knobs
69
Power Button
69
Rear Case
70
Front Feet
71
Power Supply Module
72
Internal Assembly
73
Front-Panel Cable
74
Main Board Module (Serial Number C030000 or Later)
75
Figure 7: Instrument Cable Locations (Main Board SN C030000 or Later)
76
Display Module
78
Front-Panel Module
79
Keypad
80
Troubleshooting
81
Adjustment after Repair
81
Required Tools and Equipment
81
Troubleshooting Tree
81
Table 18: Tools and Equipment
81
Figure 8: Oscilloscope Troubleshooting Tree
82
Figure 9: Oscilloscope Troubleshooting Tree
83
Figure 10: Oscilloscope Troubleshooting Tree
84
Probe Comp Output
86
Table 19: Probe Comp Output
86
Troubleshooting the Power Supply
87
Table 20: Troubleshooting the Power Supply
87
Troubleshooting the Display
88
Troubleshooting the Front Panel
89
Table 21: Troubleshooting the Front Panel - Service
89
Table 22: Troubleshooting the Front Panel - Service Diag
89
Table 23: Troubleshooting the Front Panel - Mfg. Test
89
Table 24: Expected Signals at J202
90
Troubleshooting the Main Board
92
Table 25: Troubleshooting the Main Board
92
Table 26: List of Error Codes
93
Repackaging Instructions
95
Diagrams
97
Figure 11: TDS2000C and TDS1000C-EDU Series Block Diagram
98
Replaceable Parts
99
Parts Ordering Information
99
Using the Replaceable Parts List
100
Table 27: Replaceable Parts List
100
Parts Lists and Exploded Views
101
Figure 12: Exploded Diagram, 2-Channel Models
101
Table 28: Replaceable Parts List, 2-Channel Models
102
Figure 13: Exploded Diagram, 4-Channel Models
104
Table 29: Replaceable Parts List, 4-Channel Models
105
Figure 14: Power Supply Module, Cables, and Wires
106
Table 30: Replaceable Parts List; Power Supply Module, Instrument Cables, and Wires
106
Figure 15: Exploded Diagram, Back Case and Trim
108
Table 31: Replaceable Parts List, Back Case and Trim
109
Appendix A: Example of a Vertical Position Accuracy Test Spreadsheet
111
Sample Filled-In Vertical Position Accuracy Test Spreadsheet
111
Table 32: Vertical Position Accuracy Test Spreadsheet
111
Other manuals for Tektronix TDS2012C
Technical Reference
130 pages
Security Instructions
20 pages
5
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Tektronix TDS2012C Specifications
General
Brand
Tektronix
Model
TDS2012C
Category
Oscilloscope
Language
English
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