Tektronix 7T11A Sampling Sweep Unit Manuals

Manuals and User Guides for Tektronix 7T11A Sampling Sweep Unit. We have 1 Tektronix 7T11A Sampling Sweep Unit manual available for free PDF download: Instruction Manual

Tektronix 7T11A Instruction Manual

Tektronix 7T11A Instruction Manual (234 pages)

Brand: Tektronix | Category: Test Equipment | Size: 19 MB

Table of Contents

Table of Contents

3
- List of Illustrations
  5
- O Erators Safety Summary
  8
- Service Safety Summary
  9
- Section 1 - S Ecification
  12
- General Information
  12
- Instrument Features
  12
- Characteristics
  12
- Section 2 - O Erating Instructions
  18
- General Information
  18
- Installing the 7T11A in the Oscilloscope
  18
- 7T11A Horizontal Gain
  18
- Test Equipment Required
  21
- Before You Begin
  21
- O Erators Checkout Rocedure
  21
- TIME/DIV Readout
  21
- General
  21
- Front Anel Controls and Connectors
  21
- Setup Rocedure
  22
- Adjusting SWEE CAL
  22
- Observing a Fast Rise Ulse
  23
- Detailed O Erating Information
  24
- Triggering Rate
  24
- Triggering Considerations
  24
- SWEE RANGE Control
  25
- TIME/DIV Settings
  25
- TIME OSITION Control
  26
- SCAN Control
  27
- TRIG LEVEL and STABILITY Controls
  27
- Use of a 50 Ω Delay Line
  28
- Random Sampling
  28
- ULSE out Connector
  28
- Use of Real-Time Mode
  28
- Trigger Ushbutton Switches
  28
- Section 3 - Theory of O Eration
  29
- Introduction
  29
- Circuit Theory
  29
- Real-Time Sam Ling
  29
- General
  29
- Staircase Ramp Output of the Horizontal Memory
  30
- Samples/Division Using Real-Time Sampling
  32
- Summary of Real-Time Basic Block Diagram
  32
- Additional Real-Time Circuits
  33
- Controls Affecting Timing and Delay
  34
- Important Waveform Relationships
  35
- Additional Circuits Required
  38
- Sequential Equivalent-Time Sam Ling
  38
- Constructing the Display
  40
- Waveform Relationships
  40
- Factors Affecting Dot Density
  43
- Blanking
  43
- Unavoidable Delay Introduced by the 7T11A
  45
- Random Equivalent-Time Sam Ling
  45
- Introduction
  45
- Random Mode Block Diagram
  46
- Random Operation
  46
- Waveform Relationships During Random Sampling
  48
- Detailed Circuit Descri Tion
  50
- Introduction
  50
- Relationships between the 7T11A and Vertical Unit
  50
- Internal Triggering
  52
- General
  52
- Trigger in Ut
  52
- EXT 50 Q Triggering
  53
- EXT 1 MΩ Triggering
  53
- HF Sync
  54
- Trigger Slope Amplifier, SLO E (-) or (+)
  56
- Trigger Amplifier (TRIG am X1, X10)
  56
- Trigger & Holdoff
  57
- Schmitt Trigger
  57
- Holdoff Multivibrator (HOMV)
  58
- Real-Time HOMV Switching
  59
- Equivalent-Time HOMV Switching
  61
- Arming and Output Tunnel Diodes
  64
- Output TD Circuits
  64
- Time to Height Converter
  65
- Start Multivibrator
  65
- TTH Circuit
  66
- Slewing Ram & Rt Multivibrator
  69
- Slewing Ramp Generator
  70
- Slewing Ramp Comparator and Strobe Drivers
  70
- Real-Time Multivibrator
  71
- Ratemeter
  71
- General
  71
- Retrigger Comparator
  72
- Triple Log Ramp
  72
- Reset Multivibrator
  72
- T O Memory and T O Gate
  72
- Start Correction
  73
- Horizontal am Lifier
  74
- Amplifier
  74
- Horizontal Memory Gate Driver
  75
- Horizontal Memory and Gate
  75
- Slow Ram Generator & out Ut am Lifier
  76
- Slow Ramp Generator - RE SCAN
  76
- Blanking
  77
- MAN and EXT in UT SCAN
  78
- Dot Osition Memory
  79
- Output Amplifier
  79
- Slow Ramp Inverter
  80
- Timing Switches
  80
- Time Osition Amplifier
  80
- General
  80
- Slow Ram Inverter
  80
- General
  81
- Readout
  81
- Voltage Distribution & Decou Ling
  82
- Real-Time and Equivalent-Time Logic
  82
- Lubrication
  83
- Eriodic Electrical Adjustment
  83
- Semiconductor Checks
  83
- Visual ins Ection
  83
- Reventive Maintenance
  83
- Interior
  83
- Exterior
  83
- Cleaning
  83
- Section 4 - Maintenance
  83
- Troubleshooting
  84
- Troubleshooting Aids
  84
- Diagrams
  84
- Circuit Board Illustrations
  84
- Static Sensitive Device Classification
  84
- Interface Connector in Locations
  85
- Multi- in Connector Identification
  85
- Semiconductor Lead Configuration
  85
- Diodes
  85
- Capacitor Marking
  85
- Wiring Color Code
  85
- Resistor Color Code
  85
- Troubleshooting Techniques
  88
- Check Control Settings
  88
- Check Associated Test Equipment
  88
- Visual Check
  88
- Check Instrument Adjustment
  88
- Isolate Trouble to a Circuit
  88
- Check Voltage and Waveforms
  89
- Check Individual Components
  89
- Repair and Readjust the Circuit
  89
- Troubleshooting Rocedure
  90
- Ordering Arts
  92
- Circuit Boards
  92
- Soldering Techniques
  92
- Standard Arts
  92
- Special Arts
  92
- Obtaining Re Lacement Arts
  92
- Corrective Maintenance
  92
- Metal Terminals
  93
- Com Onent Re Lacement
  93
- Circuit Board Replacement
  93
- Circuit Board in Replacement
  94
- Circuit Board in Socket Replacement
  94
- End-Lead in Connector Replacement
  94
- Coaxial End-Lead Connector Replacement
  94
- Multiple End-Lead Connector Replacement
  94
- Tunnel Diode A3CR28 Replacement
  95
- Switch Replacement
  95
- Re Ackaging for Shi Ment
  97
- Adjustment after Re Air
  97
- Lamp Replacement
  97
- Section 5 - Checks and Adjustment
  101
- Reliminary Information
  101
- Using These Rocedures
  101
- Artial Rocedures
  102
- Erformance Check Summary
  102
- Adjustment Interval
  104
- Tektronix Field Service
  104
- Test Equi Ment Required
  104
- Special Fixtures
  104
- Test Equipment Alternatives
  104
Part I - Performance Check

108
- Erformance Check Index
  108
- Erformance Check Ower-Usequence
  108
- A1. Scan and Timing Preliminary Control Settings
  109
- Scan and Timing
  109
- A2. Check Timing
  110
- A3. Check Repetitive Scan Rate
  112
- A5. Check Ext Input
  113
- Settings
  114
- Triggering
  114
- B2. Check Low-Frequency Triggering
  115
- B3. Check Medium-Frequency Triggering
  115
- B4. Check High-Frequency Triggering
  117
- B5. CHECK 12.4 Ghz HF SYNC TRIGGERING
  117
- Art I - Erformance Check
  118
- B6. Check Sequential-Mode Display Jitter at Fastest Sweep Range Position
  118
- B7. Check Random-Mode Display Jitter at Fastest Sweep Range Position
  119
- B8. Check Display Jitter at Remaining Sweep Range Positions
  120
- B10. Check Pulse out into 50 Ω
  121
- B9. Check Hf Sync Display Jitter
  121
- B11. Check Trigger Kick out
  122
- B12. Check Minimum Trigger Rate in Random Mode
  123
- Note
  123
Part Ll-Performance Check and Adjustment

124
B2. Examine/Adjust Memory Gate Blowby

132
- B3. Adjust Slewing Ramp, Servo Zero, Dot Position Memory, and Rate Servo Zero
  133
- B4. Examine Position and Sweep Cal Range
  134
- B5. Examine/Adjust Real Time Zero and Memory Gate Bal
  135
- B6. Check/Adjust Timing
  136
- B7. Examine/Adjust Random Timing
  138
- B8. Check Repetitive Scan Rate
  139
- B9. Check Sweep out
  139
- B10. Examine/Adjust Sync Countdown
  140
- B12. Check Ext Input
  142
- C1. Trigger Operation Preliminary Control Settings
  143
- Trigger O Eration
  143
- C2. Check Low-Frequency Triggering
  144
- C3. Check Medium-Frequency Triggering
  144
- C4. Check High-Frequency Triggering
  146
- C5. CHECK 12.4 Ghz HF SYNC TRIGGERING
  146
- C6. Check Sequential-Mode Display Jitter at Fastest Sweep Range Position
  147
- C7. Check Random-Mode Display Jitter at Fastest Sweep Range Position
  148
- C8. Check Display Jitter at Remaining Sweep Range Positions
  149
- C9. Check Hf Sync Display Jitter
  150
- C11. Check Pulse out into 50 Ω
  151
- C12. Check Trigger Kick out
  152
- C13. Examine Trigger Holdoff
  152
- C14. Examine Strobe Kickback into Trigger
  153
- C15. Check Minimum Trigger Rate in Random Mode
  154
- Swee Range
  154
- Trig Level
  154
- Section 6 - Instrument O Tions
  155
- Figure 3-1
  163
- Section 8 - Diagrams and Circuit Board Illustrations
  175
- Diagram
  178
- Differential Comparator
  178
- Horizontal Mode
  178
- Input
  178
- Oscilloscope Mainframe
  178
- Osition
  178
- Scan
  178
- Time/DIV
  178
- Vertical Mode
  178
- Volts/DIV
  178
- Index
  229

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