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Test Equipment
2212
Service manual
Tektronix 2212 Service Manual
Digital storage & analog oscilloscope
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User manual
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Contents
Table of Contents
Bookmarks
Table of Contents
Table of Contents
Product Description
Indicators
Signal Acquisition System
Vertical Non-Storage Deflection System
Horizontal Display System
Horizontal Non-Storage Display System
Horizontal Storage Display System
Triggering System
Setup
Cursor
Storage and I/O
Display
Nominal Traits
Table 1-4: Nominal Traits - Display System
Table 1-5: Nominal Traits-Interfaces, Output Ports, and Power Fuse
Table 1-6: Nominal Traits - Mechanical
Warranted Characteristics
Performance Conditions
Table 1-8: Warranted Characteristics - Horizontal System
Table 1-9: Warranted Characteristics - Triggering System
Table 1-11: Warranted Characteristics-Readout Display System
Table 1-12: Warranted Characteristics-X-Y Display System
Typical Characteristics
Table 1-16: Typical Characteristics - Vertical System
Table 1-18: Typical Characteristics-Triggering System
Operating Information
Using this Manual
Before Servicing
Manual Structure
Tektronix Service
Repair or Calibration Service
Warranty Repair Service
Finding Other Information
General Information
Supplying Operating Power
Operating Voltage
Power Cord Information
Table 2-1: Power Cord Conductor Identification
Table 2-2: Power Cord and Plug Identification
Operating Environment
Operating Temperature
Ventilation Requirements
Overview
Logic Conventions
Overview of the Circuits
Main Board (Al0)
(Optional)
Daculator Piggy Back Board (A14)
Front Board (A12)
General Purpose Interface Bus (GPIB) Board (A17)
Power Bo,Ard (All)
Processor Board (A15)
Serial Interface Board (A16) (Optional)
Block Diagrain
Vertical Amplifiers
Trigger and Ho'rizont3', Amplifiers
Digital Storage
Figure 3-1: Simplified 2212 Block Diagram
Front Panel and System Control
High and Lowvoltag'e Power Supply
Z-Axis
Vertical
Vertical System
Pre-Amplifier
Attenuator Circuit
Figure 3-2: 2212 Vertical System Block Diagram
Table 3-1: Attenuation Factors Vs. Logic Levels
DC Balance
Probe Coding
Storage Pick-Off Amplifier U102
Delay Line Driver
Vertical Output Amplifier
Vertical Position Logic
Vertical Switch Logic
Figure 3-3: 2212 Horizontal System Block Diagram
Trigger Circuit
Sweep Logic Circuit
Auto Cal and AUTO Setup
Timebase Generator
Horizontal Magnifiers and Readoutmux
Z-Axis Circuit
Figure 3-4: 2212 Z-Axis Block Diagram
Daculator Circuit
Serial Data Chain
Horizontal System and Z-Axis Circuit
Digital Circuitry
Microprocessor Circuit
Figure 3-5: 68070 Micro Processor Block Diagram
Display System
Figure 3-6: 2212 Display System Block Diagram
Table 3-2: Readout Control Table
Acquisition System
Tµe, Acquisition Data ;Path
Referen~ Voltage 1
Digital Acquisition Data Path
Figure 3-7: 2212 Acquisition Block Diagram
R~~9Rd ,Mode-Acquisition
F >~ , ,Re;Cord Mod~ Data Transfer to 68070
Acquiring Rp_Ll Mode Data
Table 3-3: Timebase Table
Parallel Interface
Serial Interface Board A~6,(Optional)
Front-Panel Controls
Front Panel Switches
Fre>Nt Panel Potentiometers
Front Panel Led's
Figure 3-8: 2212 Front Panel Block Diagram
Power ~Upp~Y
Mains Input
Preregulat~R
Series
Inverter
Outputs
Table 3-4 Acquisition Chain Record-Length Programming Table
Conventions
Initial Setup,Procedure
Test Equipment Required
Limits and Tolerances
Preparation
Performance Tests
Vertical Checks
Table 4-2: Deflection Accuracy Limits
Horizontal Checks
Position
Table 4-3: Settings for Timing Accuracy Checks
Triggering Checks
Probe Adjust Check
X-Y Display Checks
Video Triggering Checks
Figure 4-3 TV Line 17 of Field 2 in the NTSC System
Figure 4-4 TV Line 17 of Field 2 in the PAL System
Brief Procedures
Initial Setup Procedure
Test Equipment Required
Table 5-1: Test Equipment Required
Preparation
Limits and Tolerances
Index Calibration Procedures
Adjustment Procedures
Power Supply and CRT Display Adjustments
Mode
Volts/DIV
Ariable
Ac-Gnd-DC
Horizontal
Position
Mode Alt Magn
Sec/DIV
Magnifier
Check/Adjust Power Supply DC Levels (R1337)
Table 5-2: Power Supply Limits
Adjust Readout Jitter (R340)
CRT Display Adjustment
Coupling
Adjust Balance
Adjust Vertical Gain (R135, R185, R207, R209, and R1930)
Adjust Attenuator Compensation (AT100, AT150)
Figure 5-1: Attenuator Trimmer Layout
Adjust High Frequency Compensation (R304, R305, R341, and C304)
Adjust Trigger
Horizontal Adjustments
Adjust Horizontal Magnifier Compensation (R671, R610)
Adjust Magnifier Gain (R647, R627)
Adjust Timing
Adjust High Speed Timing (Cno, C760)
Cursors Adjustments
Adjust Cursors
Figure 5-3 TV Line 17 of Field 1 in the PAL System
Figure 5-6 Location of Video Controls
Maintenance
Maintenance Information
Supplementary Information
Preventing ESD
Precautions
Susceptibility to ESD
Table 6-1: Relative Susceptibility to Static-Discharge Damage
General Care
Inspection and Cleaning Procedures
Cleaning Procedure - Exterior
Inspection - Exterior
Inspection and Cleaning
Table 6-2: External Inspection Check List
Inspection - Interior
Table 6-3: Internal Inspection Check List
Cleaning Procedure - Interior
Lubrication
Removal and Installation Procedures
Cabinet
Storage Board
Power Supply Board
GPIB Board (Option 10 Only)
RS-232-C Board (Option 12 Only)
Main Board
Cathode-Ray Tube
Front Panel Board
Front Panel Assembly
Transformer
Fan Motor
Power-On Extension Shaft
Options Accessories
Options and Accessories
Options
Table 7-1: Power Cord Options
Warranty -Plus Service Options
Option 02
Option 05 (Video)
Option 10 (GPIB)
Option 12 (RS-232-C)
Option 1K
Option 1M
Option 3R - Rackmounted Instrument
Option 18
Standard Accessories
Optional Accessories
Table 7-2: Standard Accessories
Table 7-3: Instrument Enhancements
Table 7-5: Fuses
Table 7-6: Voltage Probes
Table 7-7: Current Probes
Table 7-8: Oscilloscope Cameras
Table 7-9: Printers/Plotters
Replaceable Electrical Parts
Parts Ordering Information
List of Assemblies
Cross Inde'l
Abbreviations
Electrical Parts List
Cross Index - Mfr. Code Number to Manufacturer
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See also:
User Manual
Service
Manual
Tektronix.:·
/
2212
Digital Storage
&
Analog Oscilloscope·
070-8439-01
Please check for CHANGE INFORMATION
at the rear
of
this manual.
First Printing: June 1992
Revised: March 1903
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