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Tektronix 2247A User Manual

Tektronix 2247A
275 pages
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‘Tektronix
2247A
Portable
Oscilloscope
Operator
Manual
070-6373-01
Please
check
for
change
information
at
the
rear
of
this
manual.
First
Printing:
January
1989
Revised
Printing:
September
1989
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Tektronix 2247A Specifications

General IconGeneral
TypeOscilloscope
Bandwidth100 MHz
Channels4
Sample Rate1 GS/s
Vertical Sensitivity2 mV/div to 5 V/div
Maximum Input Voltage400 V (DC + AC peak)
Input Impedance1 MΩ
Trigger ModesAuto, Normal, Single
Trigger SourcesChannel 1, Channel 2, Line
DisplayCRT
Power Requirements100-120 VAC
Dimensions368 mm

Summary

SECTION 1 INTRODUCTION

PRODUCT OVERVIEW

Provides an overview of the 2247A oscilloscope's features, capabilities, and system architecture.

Standard Accessories

Lists standard accessories provided with the 2247A oscilloscope instrument.

PREPARATION FOR USE

Covers essential safety, fuse replacement, and line voltage/power cord requirements.

SECTION 2 CONTROLS, CONNECTORS, AND INDICATORS

CRT, Power, and Display

Details the front panel controls for the CRT display, power switch, and intensity adjustments.

Vertical

Describes vertical controls including position, mode selection, VOLTS/DIV settings, and coupling.

Horizontal

Explains horizontal controls like position, sweep speed, magnification, and mode selection.

Trigger

Covers trigger system controls including A/B select, slope, holdoff, level, source, and coupling.

Menu System Controls

Explains the function of menu item select buttons, clear display, and measurement selection buttons.

SECTION 3 OPERATORS FAMILIARIZATION

BASIC OPERATION

Provides fundamental operating information and techniques for using the oscilloscope.

Connecting Input Signals

Covers proper grounding, probe usage, and coaxial cable considerations for reliable measurements.

MENU SYSTEM OPERATION

Details the operation of measurement, service, and Store/Recall Setup menus.

Service Menu Features

Outlines the purpose and options available within the SERVICE MENU for diagnostics and calibration.

Store/Recall Setup Features

Describes the system for storing, recalling, and arranging front-panel setups.

SECTION 4 OPERATOR CHECKS AND ADJUSTMENTS

Initial Setup

Provides a procedure for setting up front-panel controls when the instrument is first turned on.

Auto Setup Function

Explains how to automatically set up front-panel controls for a usable display of the applied signal.

Probe Low-Frequency Compensation

Covers checking and adjusting probe compensation for accurate measurements.

Vertical Deflection Check

Describes how to check the Channel 1 and Channel 2 vertical deflection system using the PROBE ADJUST signal.

Timing Checks

Explains how to use time measurement cursors to check the horizontal deflection system.

SECTION 5 BASIC APPLICATIONS

CH 1/CH 2 Voltmeter Measurements

Covers continuous measurements of DC, +PEAK, -PEAK, or PK-PK values of applied signals.

Peak Voltage Measurement

Provides a procedure for making a +peak voltage measurement using the oscilloscope.

Gated Voltage Measurement

Explains how to define a portion of a waveform for gated voltage measurements.

Time Difference

Provides a procedure for making time difference measurements using SEC cursors.

Phase Measurements

Details the procedure for setting a reference and measuring phase differences.

Frequency and Period Measurements

Explains how to use the built-in frequency counter/timer for accurate measurements.

Track Trigger Level Cursors

Explains using tracking cursors for visual indication and numeric readout of trigger level.

SECTION 6 PERFORMANCE CHARACTERISTICS

Introduction

Introduces electrical, environmental, and mechanical specifications for the 2247A.

Recommended Calibration Schedule

Provides guidelines on how often to check instrument performance for accuracy.

Electrical Characteristics

Details electrical specifications for vertical and horizontal deflection systems, and trigger functions.

SECTION 7 PERFORMANCE CHECK PROCEDURE

Introduction

Explains the purpose of the Performance Check Procedure and its accessibility.

Test Equipment Required

Lists all test equipment necessary for Performance Checks and Adjustments.

VERTICAL

Details functional checks for Input Coupling, VOLTS/DIV trace shift, and deflection accuracy.

TRIGGERING

Outlines sensitivity checks for various trigger modes and frequencies.

HORIZONTAL

Covers checks for sweep length, position range, and timing accuracy.

MEASUREMENT CURSORS

Details accuracy checks for SEC, VOLTS, and PHASE cursors.

CH 1/CH 2 VOLTMETER

Covers accuracy checks for DC Volts, Normal Mode Rejection Ratio, and Peak measurements.

COUNTER/TIMER

Outlines procedures for checking Period, Width, and Rise Time Accuracy.

EXTERNAL Z-AXIS, PROBE ADJUST AND AUTO SETUP FUNCTIONS

Details checks for external Z-axis input, probe adjustment, and auto setup functionality.

SECTION 8 OPTIONS AND ACCESSORIES

Introduction

Introduces available instrument options and accessories.

Standard Accessories

Lists the standard accessories provided with each instrument.

Optional Accessories

Lists recommended optional accessories for the 2247A Oscilloscope.

Appendix A AUTO-SETUP CONTROL SETTINGS

Table A-1 AUTO SETUP Control Settings

Details how front-panel controls are set by the AUTO SETUP function.

Appendix B FACTORY SETTINGS

Table B-1 Factory Settings

Lists the default factory settings for various controls and selections.

Appendix C FACTORY STORED SETUPS

Setup #1: ADJUST FLAT TOP

Details the front-panel control settings for the "ADJUST FLAT TOP" factory setup.

Setup #2: AUTO TO 100 MHz

Details the front-panel control settings for the "AUTO TO 100 MHz" factory setup.

Setup #3: SELECTABLE TIME

Details the front-panel control settings for the "SELECTABLE TIME" factory setup.

Setup #4: MANUAL A VOLTS

Details the front-panel control settings for the "MANUAL A VOLTS" factory setup.

Setup #5: SET CURSORS

Details the front-panel control settings for the "SET CURSORS" factory setup.

Setup #6: ADJUST CH 1 W/D

Details the front-panel control settings for the "ADJUST CH 1 W/D" factory setup.

Setup #7: SELECT DELAY

Details the front-panel control settings for the "SELECT DELAY" factory setup.

Setup #8: MATCH EDGES

Details the front-panel control settings for the "MATCH EDGES" factory setup.

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