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465B
Instruction manual
Tektronix 465B Instruction Manual
Dual channel four trace portable oscilloscope
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:
Instruction manual
(291 pages)
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Instruction manual
(148 pages)
,
Instruction manual
(144 pages)
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Table Of Contents
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292
Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
List of Illustrations
List of Tables
Operators Safety Summary
Precautions
Servicing Safety Summary
Product View
Specifications
Electrical Characteristics
Environmental Characteristics
Physical Characteristics
Operating Instructions
Installation
Line Voltage Selection
Power Cord Conductor Identification
Regulating Range Selection
Controls, Connectors and Indicators
Vertical
Fuse Selection
Instrument Cooling
Display and Calibrator
Trigger - a and B Where Applicable
Horizontal and Power
Rear Panel
Basic Oscilloscope Displays
Left Side Panel
Right Side Panel
Preset Instrument Controls
Magnified Sweep Display
Normal Sweep Display
Delayed Sweep Display
Alternate Sweep Display
Single Sweep Display
X-Y Display
Rackmounting
Dimensions
Slide-Out Tracks
Dimensional Drawing
Slide-Out Track Assemblies
Hardware Needed to Mount the Instrument in the Cabinet Rack
Mounting Procedure
Installing the Support Block on the Instrument
Rear Support Kit View
Methods of Mounting the Stationary Section to the Front Rails
Locating the Mounting Holes for the Left Stationary Section
Supporting the Rear Stationary Sections
To Insert the Instrument
To Remove the Instrument
Alternative Rear Mounting Methods
Removing or Installing the Instrument
Slide-Out Track Lubrication
To Adjust Alignment
Method of Installing the Instrument Using Rear Support Brackets
Theory of Operation
Integrated Circuit Descriptions
Digital Logic Conventions
Basic Block Diagram of the Oscilloscope
General Description
Linear Devices
Detailed Description
Channel 1 Preamp
Input Coupling
Input Attenuator
Source Follower
First Amplifier
Channel 2 Preamp
Vertical Switching Logic
Second Amplifier
Diode Gates
Channel 1 Display Only
Channel 2 Display Only
A Trigger View/Add Vertical Mode/X-Y Mode
Chop Clock and Alternate Logic
Vertical Mode Switch
Alternate Trace Sync
Chopped Blanking Amplifier
Delay-Line Driver/Normal Trigger Pickoff Amplifier
Vertical Output Amplifier
Exclusive-NOR Switching Circuit
Scale-Factor Switching Circuit
Delay Line/Input Amplifier/Trace Separation
A and B Trigger Generators
Output Amplifier
Trigger Source
Trigger Coupling
Sweep and Z Axis Logic Circuit
Input Source Follower
Tunnel Diode Driver
A Sweep Gate
B Sweep Gate
Sweep Control Integrated Circuit
Holdoff Timing
A Sweep Holdoff Amplifier
B Sweep Holdoff Amplifier
A Sweep Z-Axis Gate/B Sweep Z-Axis Gate
A +Gate and B +Gate Emitter Followers
A and B Sweep Generators
Horiz Alt Sync Pulse Amplifier
Disconnect Amplifier
Sawtooth Generator
A Sweep Start Comparator
A Sweep End of Sweep Comparator
B Sweep Generator Differences
Horizontal Display Logic
Horizontal Amplifier
Vert Alt Sync Pulse
A and B Sweep Switching
X-Axis Amplifier
Input Paraphase Amplifier
Gain Setting Cascode Amplifier
CRT Circuit
High-Voltage Oscillator
High-Voltage Regulator
High-Voltage Rectifier and Output
CRT Control Circuits
Z-Axis Amplifier
DC Restorer
Sinusoidal Sample Voltage at Center Tap of T4015
Calibrator
Multivibrator
Low-Voltage Power Supply
Calibrator Circuit Waveform Diagram
Block Diagram of the Low-Voltage Power Supply Circuit
Fan Motor Circuit
Power Input
Secondary Circuit
Calibration Procedure
Test Equipment Required for Calibration
Performance Check
Index to Performance Check Procedure
Calibration: Vertical
The Instrument Control Settings
Check Trace Rotation
Check ALT Mode
Check CHOP Mode
Check CH 1 Balance
Check CH 2 Balance
Check Vertical Position Range and Centering
Deflection Factor Limits
Check Beam Find Operation
Check CH 1 and CH 2 Deflection Factor
Check Ch 1 and CH 2 VAR VOLTS/DIV Range/Check ADD Mode
Check Invert Mode
Check Vertical Low-Frequency Compensation
Check CH 1 and CH 2 Volts/Division Compensation
Check CH 1 and CH 2 Transient Response
Check CH 1 and CH 2 Bandwidth
Check Cascaded Gain and Bandwidth
Check Trigger View Centering and Gain
Check Trigger View Low-Frequency Compensation
Check Trigger View High-Frequency Compensation
Check Zero Trigger View Delay
Calibration: Triggers
Check a and B Internal Triggering
Check a and B External Triggering
Check a NORM TRIG Mode
Check SINGL SWP TRIG Mode
Calibration: Horizontal
Check a and B Time/DIV Accuracy
Check a VAR Time/DIV Range
Check Delay or Differential Time Linearity
Check Delay or Differential Time Accuracy
Check Delay or Differential Jitter
Check ALT Horizontal Display Trace Separation
Check a INTEN and B ENDS a Operation
Check X Gain
Check X Bandwidth
Adjustment Procedure
Limits and Tolerances
Calibration Equipment Altenatives and Partial Procedures
Interactions
Adjustment Interactions Chart
Index to Adjustment Procedure
Preparation to Adjustment
Power Supply Adjustment
Check/Adjust Power Supply DC Levels, Regulation and Ripple
Check High Voltage Supply
Low Voltage Power Supply Limits
Typical Low Voltage Power Supply Ripple
Display and Z Axis Adjustment
Check/Adjust CRT Grid Bias
Check/Adjust Trace Alignment - Trace Rotation
Check/Adjust Y-Axis Alignment
Check/Adjust Geometry
Check/Adjust Z-Axis Compensation
Vertical Adjustment
Check Probe Indicator LED
Check Input Coupling (AC-GND-DC) Switches
Check Beam Find
Check/Adjust CH 1 Var Volts/DIV Balance and Var Indicator
Check/Adjust CH 1 Position Centering
Check/Adjust CH 2 Var Volts/DIV Balance and Var Indicator
Check/Adjust CH 2 Invert Balance/Check/Adjust CH 2 Position Centering
Check CH 2 and CH 1 Gate Current
Check/Adjust Gain
Vertical Deflection Accuracy
Check CH 1 and CH 2 Var Volts/DIV Range
Check ADD Mode
Check Compression and Expansion
Check/Adjust Low-Frequency Compensation
Maximum Overshoot or Rounding
Vertical Output Low-Frequency Compensation
CH 1 Low-Frequency Compensation
CH 2 Low-Frequency Compensation
Check/Adjust CH 1 Volts/DIV Compensation
Adjust CH 2 Volts/DIV Compensation
Check/Adjust CH 2 and Output High-Frequency Compensation
Check CH 2 Position Effect
Check/Adjust CH 1 High-Frequency Compensation
Check CH 1 Position Effect
Check CH 2 Transient Response
Check Bandwidth
Check Channel Isolation
Check/Adjust Common-Mode Rejection Ratio
Check Bandwidth Limit Operation
Check/Adjust Trigger View Centering and Gain
Check/Adjust Trigger View Low-Frequency Compensation
Check/Adjust Trigger View High-Frequency Compensation
Check/Adjust Zero Trigger View Delay
Triggers Adjustment
Check/Adjust a Trigger Sensitivity and TRIG LED
Check/Adjust B Trigger Sensitivity
Check/Adjust B Trigger Slope Center and Level
Check/Adjust a Trigger Slope Center and Level
Check/Adjust a Trigger DC Levels
Check B Trigger DC Levels
Check B Internal 10 Mhz Triggering
Check a Internal 10 Mhz Triggering
Check a External 10 Mhz Triggering
Check B External 10 Mhz Triggering
Check B and a External 100 Mhz Triggering
Check a Internal 100 Mhz Triggering
Check B Internal 100 Mhz Tiggering
Check a and B High Frequency Reject Triggering
Check Single Sweep
Check 60 Hz Internal Triggering
Check 60 Hz External Triggering
Check a and B External Trigger Level Ranges
Check Line Triggers
Check NORM a Trigger Mode
Check Auto Recovery Time
Horizontal Adjustment
Check/Adjust Sweep Start and a Sweep Calibration
Check/Adjust Horizontal Amplifier Gain
Check Sweep Linearity
Check/Adjust R4253 Magnifier Centering and R4275 Registration
Check/Adjust B Sweep Calibration
Check a Sweep Length/Check Variable Time/Devision
Check Horizontal Position Range
Check/Adjust a 10 Μs Timing
Check/Adjust a Sweep High Speed Timing
Check/Adjust B Sweep High Speed Timing
Check a and B Time/Division Accuracy
Adjust High-Speed Magnified Timing
Check a and B Magnified Timing Accuracy
Check Delay or Differential Time Jitter
Check/Adjust X Gain
Check X-Y Phasing and Bandwidth
Check B Ends a
Check a Trigger Holdoff
Gates, Calibrator and EXT Z Axis Adjustments
Check a and B +Gates
Check/Adjust Calibrator DC Level
Check External Z Axis
Maintenance
Cabinet and Rack Adapter Removal and Replacement
Standard Cabinet Removal
Standard Cabinet Installation
Rack Adapter Removal
Rack Adapter Installation
Preventive Maintenance
Cleaning
Switch Contacts Care
Air Filter Care
Visual Inspection
Lubrication
Semiconductor Checks
Troubleshooting
Read-Only Memory U1605 Logic
Color Codes
Troubleshooting Techniques
Check Control Settings
Isolate Trouble to a Circuit
Check Voltages and Waveforms
Check Individual Components
Corrective Maintenance
Repair and Readjust the Circuit
Static-Sensitive Components
Relative Susceptibility to Static Discharge Damage
Component Removal and Replacement
Circuit Boards Removal and Replacement
Vertical Preamplifier Assembly Removal and Replacement
Vertical Mode Switch and Attenuators Removal and Replacement
Trigger Generator and Sweep Logic Board Removal and Replacement
Sweep Timing Circuit Board Removal and Replacement
Vertical Output Board Removal
Main Interface Board Removal
Power Transformer Removal and Replacement
Cathode Ray Tube (CRT) Removal and Replacement
High Voltage Multiplier Removal and Replacement
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Table of Contents
Troubleshooting
Troubleshooting
142
Troubleshooting Techniques
146
Suggested troubleshooting equipment
160
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