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Tektronix 2245A User Manual

Tektronix 2245A
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Table of Contents

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Tektronix 2245A Specifications

General IconGeneral
TypeAnalog Oscilloscope
Bandwidth100 MHz
Channels4
Vertical Sensitivity2 mV/div to 5 V/div
Rise Time3.5 ns
DisplayCRT
Power Supply48 to 440 Hz
Weight20 lbs
Max Sample RateN/A (Analog Oscilloscope)
Input Impedance1 MΩ ±2%, ~20 pF

Summary

PRODUCT OVERVIEW

Description

Overview of the 2245A oscilloscope's features including microprocessor control, measurement systems, and setup capabilities.

PREPARATION FOR USE

Safety

Safety precautions for power source, grounding, and general instrument usage.

Controls, Connectors, and Indicators

Crt, Power, and Display

Description of CRT display, power switch, intensity, focus, and scale illumination controls.

Vertical Controls

Details on CH 1/CH 2 position, mode selection (CHOP/ALT), and input coupling.

OPERATORS FAMILIARIZATION

BASIC OPERATION

Fundamental operating information and techniques for making measurements with the oscilloscope.

Auto Setup Function

MIN SETUP

MEASUREMENT SYSTEM

Cursor Volts Measurements

Procedure to activate voltage measurement cursors and display voltage differences.

Time Measurements

Service Menu Features

Self Cal Measurements

Performing self-characterization of vertical channels and horizontal timing for calibration.

SECTION 4—OPERATOR CHECKS AND ADJUSTMENTS

Auto Setup Function

Using the AUTO SETUP function to automatically configure controls for a usable signal display.

Vertical Deflection Check

Timing Checks

SECTION 5—BASIC APPLICATIONS

Voltage Measurement Cursors

Accurately measuring voltage on displayed signals using positionable horizontal cursors.

Voltage Difference

Guideline for making voltage difference measurements using positionable voltage cursors.

Time Measurement Cursors

Time Difference

Guideline for making time difference measurements using the TIME cursors.

Period Measurement

Frequency Measurement

Rise-Time Measurements

Phase Measurements

Time Delay Measurement

Add Mode

SECTION 6—PERFORMANCE CHARACTERISTICS

Electrical Characteristics

Environmental Characteristics

SECTION 7—PERFORMANCE CHECK PROCEDURE

DISPLAY

VERTICAL

TRIGGERING

HORIZONTAL

MEASUREMENT CURSORS

k- SEC ~>l and l<- 1/SEC -»| Cursor Accuracy

Verifying the accuracy of time and frequency measurements using SEC and 1/SEC cursors.

EXTERNAL Z-AXIS, PROBE ADJUST AND AUTO SETUP FUNCTIONS

AUTO SETUP Functional Check

Testing the AUTO SETUP function to ensure it produces a stable display of the probe adjust waveform.

Appendix A

AUTO-SETUP Control Settings

Table detailing the front-panel control actions performed by the AUTO-SETUP function.

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