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Installation &

Power On

Before you use the 2221A Digital Storage Oscilloscope, ensure that it is

properly installed and powered on.

To install and power on the 2221A Digital Storage Oscilloscope, perform the

following steps:

|~1 Step 1: Connect the proper power cord to the back of the instrument as

shown below in Figure 1 -1.

Line Fuse

Screw

Figure 1-1: Installing the Power Cord

|~| Step 2: Check that you have the proper power supply for the instru

ment. The 2221A requires a line source that is 90 to 250 VAC with a

frequency of 48 Hz to 440 Hz.

2221A User Manual

1-3

Default Chapter7
- Table of Contents7
Welcome15
Product Description15
Safety17
- Symbols and Terms17
- Specific Precautions18
Start up19
- Installation & Power on19
  - Figure 1-1: Installing the Power Cord19
- Initial Setup20
- Installing the Accessory Pouch23
  - Figure 1-4: Installing the Accessory Pouch23
- Using the Power Cord Wrap24
  - Figure 1-5: Using the Power Cord Wrap24
Front Panel25
- Figure 2-1: Front Panel Control Sections25
- Figure 2-2: Front Panel View - Left Side26
- Figure 2-4: Power Switch28
- Power Switch29
- CRT Display29
  - Figure 2-5: CRT Graticule29
- Display Mode30
  - Figure 2-6: Analog (NON-STORE) Mode Display30
  - Figure 2-7: Digital (STORE) Mode Display31
- CRT Display Controls32
  - Figure 2-8: CRT Display Controls32
- Vertical Controls and Connections34
  - Figure 2-10: Vertical Controls and Connections (Cont.)36
  - Figure 2-11: Horizontal Controls38
- Horizontal Controls38
  - Figure 2-12: Trigger Controls40
- Trigger Controls40
  - Figure 2-13: Trigger Controls (Cont)42
- Cursor Controls44
  - Figure 2-14: Cursor Controls44
- Acquisition Controls45
  - Figure 2-15: Acquisition Controls45
  - Figure 2-16: Save Reference Memory Buttons46
- Save Reference Memory Buttons46
Setup Menus49
- Figure 2-20: Setup Menu Example (Display)50
- Figure 2-21: Acquisition Menu50
- Acquisition Menu50
- Display Menu52
  - Figure 2-22: Display Menu52
  - Figure 2-23: Plot Menu53
- Plot Menu53
- Advanced Functions Menu54
  - Figure 2-24; Advanced Functions Menu54
  - Figure 2-25: Save Setup Menu55
Displaying Signals57
Applying Signals to the Vertical Inputs57
- Connecting Signals57
- Figure 3-1: Input Connection and Coupling Switch57
- Coupling Signals58
- Precharging the Signal Input58
Building a Basic Display59
- Presetting the Controls59
- Selecting the Display Mode (STORE/NON-STORE)59
- Selecting the Trigger Mode60
- Selecting the Horizontal Mode and Scale60
- Selecting the Vertical Mode and Scale61
- Figure 3-2: Horizontal Display Controls61
- Setting the Display Intensity and Focus62
- Figure 3-3: Vertical Display Controls62
- Finding "Lost" Displays63
- Figure 3-4: CRT Display Controls63
Digitizing Signals64
- Figure 3-5: Beam Find64
Displaying Magnified Sweeps75
- Using the X10 Magnifier75
Displaying Two Channels76
- Comparing Two Signals76
- Subtracting Signals or Signal Components {Common Mode Rejection)76
- Figure 3-19: Rejecting Common Mode Signal77
Displaying X-Y Patterns78
- Figure 3-20: Selecting the X-Y Mode78
- Figure 3-21: X-Y Phase Relationships79
- Figure 3-22: X-Y Frequency Relationships79
- Figure 3-23: External Z-Axis Connection80
Limiting Bandwidth80
Modulating the Display Intensity80
Triggering on Signals81
- Triggering on Repetitive Signals81
- Figure 3-24: Repetitive Sine Wave81
- Triggering on Low-Frequency Signals82
- Triggering on Random or Infrequent Events82
- Figure 3-25: Low-Frequency Signal in the STORE Mode82
- Triggering on Complex or Non-Repetitive Signals83
- Triggering on Line Frequency83
- Figure 3-26: Channel 1 Signal Triggered with Channel 283
- Triggering with an External Signal84
- Triggering on TV Signals84
Measuring Signals87
- Measuring with the Graticule87
- Measuring with STORE Mode Cursors87
  - Figure 3-29: Measuring with the CRT Graticule87
Saving Waveforms and Setups97
- Saving and Recalling Waveforms97
- Saving and Recalling Setups98
Transmitting Waveforms101
- Communicating Via Interface Options101
  - Figure 3-42: RS-232 Interface (Option 12)101
- Plotting or Printing a Waveform102
  - Figure 3-44: Auxiliary Connection102
  - Figure 3-45: Plot Menu103
Appendix A: Options and Accessories105
- Options105
  - Table A-1: International Power Cords105
  - Table A-2: Standard Accessories106
- Standard Accessories107
- Other Accessories107
  - Table A-3: Optional Accessories107
Appendix B: Specification109
- General Product Description109
- Options and Accessories111
- Performance Conditions111
- Characteristic Tables112
Appendix C: Performance Verification129
- General Information129
- Test Equipment Required130
  - Table A-7: Test Equipment Required130
- Procedures132
Appendix D: Storage Modes157
- Table A-13: Storage Modes157
Glossary159
Index165

Brand	Tektronix
Model	2221A
Category	Test Equipment
Language	English

Tektronix 2221A User Manual

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Tektronix 2221A Specifications

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