Tektronix 7B87 Time Base Unit Manuals

Manuals and User Guides for Tektronix 7B87 Time Base Unit. We have 3 Tektronix 7B87 Time Base Unit manuals available for free PDF download: Instruction Manual

Tektronix 7B87 Instruction Manual (143 pages)

TIME BASE WITH PRETRIGGER ACQUIRE CLOCK

Brand: Tektronix | Category: Test Equipment | Size: 7 MB

Table of Contents
4
List of Illustrations
6
Operators Safety Summary
8
Servicing Safety Summary
10
- Installation
  12
- Controls, Connectors, and Indicators
  12
- Functional Check
  12
  - Setup Procedure
    12
Location of Release Latch
12
Front-Panel Controls, Connectors, and Indicators
13
- Sweep Functions
  15
- Triggering Functions
  15
- Pretrigger Acquire Clock Functions
  16
- General Operating Information
  17
  - TRIGGERING SWITCH Logic
    17
  - Triggering Modes
    17
- Single Sweep Acquisition
  18
  - TRIGGER Coupling
    20
  - Trigger Source
    20
Effect of LEVEL Control and SLOPE Switch on Crt Display
21
- Triggerslope
  22
- Trigger Level
  22
- Horizontal Sweep Rates
  22
- Time Measurement
  22
- SWEEP Magnification
  22
Area of Graticule Used for most Accurate
22
- Variable Hold off
  23
- Mainframe Operating Modes
  23
Operation of Sweep Magnifier
23
- Rise-Time and Fall-Time Measurements
  24
Applications
23
- Time Interval Measurements
  23
  - Period and Frequency Measurements
    23
Measuring the Period and Determining the Frequency of a Displayed Waveform
24
- Pulse Width Measurements
  25
Measuring the Rise Time and Fall Time of
25
Measuring the Pulse Width of a Displayed
25
Electrical Characteristics
27
Section 2-Specification
27
Mainframe Horizontal Compatibility
29
- Standard Accessories
  30
Environmental Characteristics
30
Physical Characteristics
30
Section 3- Theory of Operation
32
- Block Diagram Description
  32
- Trigger Generator
  32
- Sweep Generator
  32
- Pickoff Amplifier and Delay Gate Generator
  32
- Logic
  32
- Digital Voltmeter
  32
- Clock Generator
  32
DETAILED CIRCUIT Description
32
- Gate Signal
  32
Basic Block Diagram of the 7B87 Delaying
33
- Front-Panel Distribution
  34
- Trigger Generator
  34
  - External Source
    34
  - Internal and Line Source
    34
  - Trigger Source Selector and Amplifier
    34
  - Peak-To-Peak Auto
    34
  - Slope Selector and Trigger Generator
    36
  - Gate Generator
    36
- Logic
  36
  - Sweep Modes
    36
  - Hold off Timing
    37
Timing Diagram for Gate Generator Stage
37
- Lockout Buffer Amplifier
  38
- Hold off Output Amplifier
  38
- Sweep Generator
  38
Detailed Block Diagram of Logic Circuit
38
Detailed Block Diagram of Sweep Generator
39
- Horizontal Preamplifier
  41
- Sweep Gate Generator
  41
- DVM
  41
  - Delay Time Comparator and Delay Gate Generator
    41
- Digital Voltmeter
  42
Timing of Events that Form the Delay
42
- Delay Comparison Voltage-To-Ramp Converter
  43
- Comparator
  43
- Reference Current Source
  43
- Reference Current Inverter
  43
- Counter and Encoder
  43
- Clock Generator
  43
  - Control Logic
    44
  - Oscillator
    44
Truth Table. TIME/DIV Setting Vs. Strobes for U637 and U638
44
- First Divider
  46
- X1-X10 Multiplexer
  46
- Decade Divider
  46
- Internal Clock Multiplexer
  46
- Output Clock Multiplexer
  46
- Intensify Circuit
  46
Operation of Output Multiplexer U655
46
- 7B87 in a Horiz Plug-In Compartment
  47
  - Internal Button Pressed
    47
- 7B87 in B Horiz Plug-In Compartment
  47
Current in CH1 Readout Line Vs Acquire Clock Mode, During TS10
47
- Time/Division and Readout Switching
  48
  - Basic Readout System
    48
  - Time/Division Readout
    48
  - Acquire-Stop Delay Time Readout
    48
- Interface Connections and Power Supply
  48
Readout Character Selection
49
Section 4--Maintenance
50
Preventive Maintenance
50
- Cleaning
  50
  - Exterior
    50
  - Interior
    50
  - Switch Contacts
    50
- Visual Inspection
  50
- Lubrication
  50
  - Cam Switch Lubrication
    51
- Semiconductor Checks
  51
- Adjustment after Repair
  51
Troubleshooting
51
- Troubleshooting Aids
  51
  - Diagrams
    51
  - Voltages and Waveforms
    51
  - Circuit-Board Illustrations
    51
Lubrication Procedure for a Typical Cam Switch
51
Inter-Board Multi-Pin Connector Assembly
53
End-Lead Multi-Pin Connector Assembly
53
Relative Susceptibility
54
- Troubleshooting Equipment
  55
- Troubleshooting Techniques
  55
  - Troubleshooting Procedure
    55
Location of Pin Numbers on Interface Connector
54
Corrective Maintenance
57
- Soldering Techniques
  58
- Component Removal and Replacement
  59
  - Circuit Boards
    59
Readout Board Removal Procedure
59
Coaxial End-Lead Connector Assembly
60
- Switches
  61
Location of Securing Screws and Inter-Board Multi-Pin Connectors on Clock Circuit Board
61
Cam Switch Removal Procedure
62
Removal Procedure for Typical Pushbutton
63
- Semiconductors
  64
- Interconnecting Pins
  64
- Circuit-Board Pins
  64
- Front-Panel Lights
  65
- Adjustment after Repair
  65
- Instrument Repackaging
  65
Exploded View of Circuit-Board Pin and Ferrule
65
Front-Panel Light Socket Assembly
65
Section 5-Performance Check and Adjustment
66
Preliminary Information
66
- Adjustment Interval
  66
- Tektronix Field Service
  66
- Using this Procedure
  66
TEST EQUIPMENT Required
66
- Special Fixtures
  66
- Test Equipment Alternatives
  66
Switch
69
Index to Performance Check and Adjustment Procedure
69
Preliminary Procedure
69
Triggering System
69
Test Equipment
70
Acquire Clock Repetition Rate Output
76
Delay Time Linearity
77
Acquire-Stop Delay Accuracy
78
- Time Base Unit
  79
Sweep Timing
79
Magnified Sweep Timing
80
Semiconductor Lead Configuration
100
A3-Readout Circuit Board Assembly
125

Tektronix 7B87 Instruction Manual (128 pages)

TIME BASE WITH PRETRIGGER ACQUIRE CLOCK

Brand: Tektronix | Category: Test Equipment | Size: 21 MB

Table of Contents
3
Rev Jun 1981
5
List of Tables
6
Operators Safety Summary
9
- Setup Procedure
  11
Section 1--Operating Instructions
12
- Sweep Functions
  14
- Triggering Functions
  14
- General Operating Information
  16
  - Triggering Switch Logic
    16
  - Triggering Modes
    16
  - Trigger Coupling
    19
  - Trigger Source
    19
  - Trigger Slope
    21
  - Trigger Level
    21
  - Horizontal Sweep Rates
    21
  - Time Measurement
    21
  - Sweep Magnification
    21
  - Variable Hold off
    22
  - Mainframe Operating Modes
    22
Applications
22
- Time Interval Measurements
  22
  - Rise-Time and Fall-Time Measurements
    23
  - Pulse Width Measurements
    24
Section 2--Specification
26
- ~ Swee P Generator
  26
- Standard Accessories
  29
- Digital Voltmeter
  31
- Clock Generator
  31
Detailed Circuit Description
31
- Trigger Generator
  33
- Front-Panel Distribution
  33
  - External Source
    33
  - Internal and Line Source
    33
  - Trigger Source Selector and
    33
  - Peak-To-Peak Auto
    33
  - Slope Selector and Trigger
    35
    
    Generator
    35
  - Gate Generator
    35
  - Hold off Timing
    36
  - Lockout Buffer Amplifier
    37
  - Hold off Output Amplifier
    37
- Sweep Generator
  37
Rev Jun 1981
38
- Timing Current Source
  38
- Ramp Generator
  40
- Horizontal Preamplifier
  40
  - Sweep Gate Generator
    40
  - Delay Time Comparator and Delay
    40
  - Gate Generator
    40
- Digital Voltmeter
  41
  - Delay Comparison Voltage-To-Ramp
    42
  - Converter
    42
  - Comparator
    42
  - Reference Current Source
    42
  - Reference Current Inverter
    42
  - Counter and Encoder
    42
- Clock Generator
  42
  - Control Logic
    43
  - Oscillator
    43
  - First Divider
    45
  - Decade Divider
    45
  - Internal Clock Multiplexer
    45
  - Output Clock Multiplexer
    45
  - Intensify Circuit
    45
  - Internal Button Pressed
    46
- Time/Division and Readout Switching
  47
  - Basic Readout System
    47
  - Time/Division Readout
    47
Preventive Maintenance
49
- Cleaning
  49
  - Exterior
    49
  - Interior
    49
  - Switch Contacts
    49
Visual Inspection
49
- Cam Switch Lubrication
  50
- Voltages and Waveforms
  50
- Circuit-Board Illustrations
  50
- Lead Configurations
  51
- Switch Cam Identification
  52
- Diode Color Code
  52
- Wiring Color Code
  52
- Inter-Board Pin Connector
  52
- Multi-Pin Connector
  52
- Interface Connector
  53
- Pin Locations
  53
- Performance Check and Adjustment
  54
Corrective Maintenance
56
- Circuit Boards
  58
Soldering Techniques
63
- Interconnecting Pins
  63
- Circuit-Board Pins
  63
- Front-Panel Lights
  64
Adjustment after Repair
64
Instrument Repackaging
64
Performance Check
65
- Adjustment Interval
  65
- Tektronix Field Service
  65
- Using this Procedure
  65
- Test Equipment Required
  65
  - Special Fixtures
    65
  - Test Equipment Alternatives
    65
  - Adjustment Procedure
    68
  - Preliminary Procedure
    68
- Triggering System
  68
- Horizontal/Aqs System
  68
Instrument Options
80
Replaceable Electrical Parts
81
Diagrams and Circuit Board
98
Static Sensitive Devices
114

Tektronix 7B87 Instruction Manual (128 pages)

TIME BASE WITH PRETRIGGER ACQUIRE CLOCK

Brand: Tektronix | Category: Network Hardware | Size: 2 MB

Table of Contents
3
7B87 Instruction
5
Controls. Connectors
11
Functional Check
11
- Sweep Functions
  14
- Triggering Functions
  14
- Pretrigger Acquire Clock Functions
  15
Operating Instructions
11
General Operating Information
16
- Trigger Coupling
  19
- Trigger Slope
  21
- Horizontal Sweep Rates
  21
- Variable Hold off
  22
- Mainframe Operating
  22
Time Interval Measurements
22
- Rise Time and Fall-Time
  23
- Pulse Width Measurements
  24
Sweep Generator
26
Standard Accessories
29
Block Diagram Description
31
Clock Generator
31
- Gate Generator
  31
- Trigger Source Selector and
  33
Digital Voltmeter
31
Front-Panel Distribution
33
Trigger Generator
33
- External Source
  33
- Peak To-Peak Auto
  33
Trigger Generator
35
- Slope Selector and Trigger
  35
- Gate Generator
  35
- Hold off Timing
  36
- Lockout Buffer Amplifier
  37
- Hold off Output Amplifier
  37
- Timing Current Source
  37
- Ramp Generator
  40
- Horizontal Preamplifier
  40
- Sweep Gate Generator
  40
- Delay Comparison Voltage-To
  42
- Reference Current Source
  42
- Reference Current Inverter
  42
- Counter and Encoder
  42
Clock Generator
42
- Control Logic
  43
- First Divider
  45
- Decade Divider
  45
- Internal Clock Multiplexer
  45
- Output Clock Multiplexer
  45
- Intensify Circuit
  45
- Basic Readout System
  47
- Time Division Readout
  47
Preventive Maintenance
49
Visual Inspection
49
- Cam Switch Lubrication
  50
Semiconductor Checks
50
- Voltages and Waveforms
  50
- Circuit-Board Illustrations
  50
- Switch Cam Identification
  52
- Diode Color Code
  52
- Wiring Color Code
  52
- Semiconductor Lead
  52
- Inter-Board Pin Connector
  52
- Multi-Pin Connector
  52
- Interface Connector Pin
  53
Static Sensitive Devices
53
Troubleshooting Equipment
54
Troubleshooting Techniques
54
- Troubleshooting Procedure
  54
Corrective Maintenance
56
Soldering Techniques
57
Component Removal and Circuit Boards
58
- Interconnecting Pins
  63
- Circuit-Board Pins
  63
- Front-Panel Lights
  64
Adjustment after Repair
64
Instrument Repackaging
64
- Table of
  65
- Performance Check and Adjustment
  65
Performance Check and
65
- Preliminary Information
  65
  - Adjustment Interval
    65
  - Tektronix Field Service
    65
  - Using this Procedure
    65
- Test Equipment Required
  65
  - Special Fixtures
    65
  - Test Equipment Alternatives
    65
- Preliminary Procedure
  68
Triggering System
68
- Horizontal/Aqs System
  74
- In the
  80
  - -Instrument Options
    80
Replaceable Electrical
81
Replaceable Mechanical Parts
119

Tektronix Categories

Test Equipment Measuring Instruments Amplifier Portable Generator

Printer

More Tektronix Manuals

Tektronix 7B87 Time Base Unit Manuals

Tektronix 7B87 Instruction Manual (143 pages)

Table of Contents

Tektronix 7B87 Instruction Manual (128 pages)

Table of Contents

Tektronix 7B87 Instruction Manual (128 pages)

Table of Contents

Related Products

Tektronix Categories