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Service Manual
THS710A, THS720A,
THS730A & THS720P
TekScope
070-9752-01
This document applies to to serial number
B010100 and above and firmware version 1.00
and above.
First printing: February 1998
Warning
The servicing instructions are for use by qualified
personnel only. To avoid personal injury, do not
perform any servicing unless you are qualified to
do so. Refer to all safety summaries prior to
performing service.
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Copyright Tektronix, Inc. All rights reserved. Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes that in all previously published material. Specifications and price change privileges reserved. Printed in the U.S.A. Tektronix, Inc., P.O. Box 1000, Wilsonville, OR 97070–1000 TEKTRONIX and TEK are registered trademarks of Tektronix, Inc. Tek Secure is a registered trademark of Tektronix, Inc. TekTools, TekScope, and Isolate
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WARRANTY Tektronix warrants that this product will be free from defects in materials and workmanship for a period of three (3) years from the date of purchase from an authorized Tektronix distributor. If any such product proves defective during this warranty period, Tektronix, at its option, either will repair the defective product without charge for parts and labor, or will provide a replacement in exchange for the defective product. Batteries are excluded from this warranty. In order to obtain
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Service Assurance If you have not already purchased Service Assurance for this product, you may do so at any time during the product’s warranty period. Service Assurance provides Repair Protection and Calibration Services to meet your needs. Repair Protection extends priority repair services beyond the product’s warranty period; you may purchase up to three years of Repair Protection. Calibration Services provide annual calibration of your product, standards compliance and required audit documen
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Table of Contents General Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v Service Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix Conventions . . . . . . . . . . . . . . . . . . . .
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Table of Contents Options Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–1 Electrical Parts List Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8–1 Diagrams Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9–1 Mechanical Parts List Parts Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Table of Contents List of Figures Figure 2–1: Removing and replacing the battery . . . . . . . . . . . . . . . . . 2–2 Figure 2–2: AC adapter attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2 Figure 2–3: Typical scope-mode display . . . . . . . . . . . . . . . . . . . . . . . . 2–3 Figure 2–4: Typical meter-mode display . . . . . . . . . . . . . . . . . . . . . . . . 2–4 Figure 2–5: Connector locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–8 Figure 3–1:
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Table of Contents List of Tables Table 1–1: Oscilloscope specifications . . . . . . . . . . . . . . . . . . . . . . . . . 1–1 Table 1–2: DMM specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–8 Table 1–3: General specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–10 Table 5–1: Summary of oscilloscope adjustment steps . . . . . . . . . . . . 5–5 Table 5–2: Summary of meter adjustment steps . . . . . . . . . . . . . . . . . 5–8 Table 6–1: Interna
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General Safety Summary Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it. To avoid potential hazards, use this product only as specified. Only qualified personnel should perform service procedures. To Avoid Fire or Connect and Disconnect Properly. Do not connect or disconnect probes or test leads while they are connected to a voltage source. Personal Injury Observe All Terminal Ratings. To avoid fire or shock hazard, obser
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General Safety Summary Symbols and Terms Terms in this Manual. These terms may appear in this manual: WARNING. Warning statements identify conditions or practices that could result in injury or loss of life. CAUTION. Caution statements identify conditions or practices that could result in damage to this product or other property. Terms on the Product. These terms may appear on the product: DANGER indicates an injury hazard immediately accessible as you read the marking. WARNING indicates an inju
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Service Safety Summary Only qualified personnel should perform service procedures. Read this Service Safety Summary and the General Safety Summary before performing any service procedures. Do Not Service Alone. Do not perform internal service or adjustments of this product unless another person capable of rendering first aid and resuscitation is present. Use Care When Servicing With Power On. Dangerous voltages or currents may exist in this product. Disconnect power, remove battery (if applicabl
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Service Safety Summary viii THS710A, THS720A, THS730A & THS720P Service Manual
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Preface This is the Service Manual for the THS710A, THS720A, THS730A, and THS720P TekScope instruments. This manual provides information to trouble- shoot and repair the instrument to the module level. Related Manuals Additional documentation for the instrument is contained in the related manuals listed below. User Manual Reference Programmer Manual Language Part Number Part Number Part Number English 070-9731-XX 070-9741-XX 070-9751-XX French 070-9732-XX 070-9742-XX German 070-9733-XX 070-9743-
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Preface Conventions In the Performance Verification, Adjustments, and Maintenance chapters of this manual, TekScope instrument setups are shown in tables similar to the one shown below. The header of each table contains icons that represent the controls and menu items used to set up the instrument. To make a specific setup, read the table from left to right and then from top to bottom as shown below. The table contains the symbol “—” if no action is required. 1. Choose scope 2. Press this but- 3
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Specifications This chapter contains the oscilloscope, DMM, and general specifications for the THS710A, THS720A, THS730A, and THS720P TekScope instruments. All specifications are guaranteed unless noted “typical.” Typical specifications are provided for your convenience but are not guaranteed. Specifications that are marked with the symbol are checked in the chapter Performance Verification. All specifications apply to all four instruments unless noted otherwise. All specifications assume hori
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Specifications Table 1–1: Oscilloscope specifications (Cont.) Inputs Maximum Voltage 600 V (CAT II) or 300 V (CAT III), using rated connectors or RMS RMS Between Common accessories and Earth Ground 30 V , 42.4 V , using noninsulated connectors and acessories RMS pk at BNC Maximum Voltage, 30 V , 42.4 V , using noninsulated connectors and acessories RMS pk Channel-to-Channel Commons Channel-to-Channel 100:1 at frequencies ≤50 MHz, measured on MATH Ch1 – Ch2 Common Mode waveform, with test signal
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Specifications Table 1–1: Oscilloscope specifications (Cont.) Vertical DC Gain Accuracy ±2% for Sample or Average acquisition mode Position Accuracy ±[0.4% × |(position × volts/div)| + (0.1 div × volts/div)] DC Measurement Measurement Type Accuracy A Accur racy y, A Aver erage e Absolute voltage measurements ±[2% × |reading + Acquisition Mode (position × volts/div)| + Using ≥16 Wave- (0.1 div × volts/div)] f forms rms Delta voltage between any two ±[2% × |reading| + waveforms acquired under
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Specifications Table 1–1: Oscilloscope specifications (Cont.) Internal Trigger Trigger Sensitivity, Coupling Sensitivity Ed dge e Tr Trigger er T Type ype, NOISE REJ 3.5 times the DC-coupled limits typ ypical HF REJ 1.5 times the DC-coupled limit from DC to 30 kHz, attenuates signals above 30 kHz LF REJ 1.5 times the DC-coupled limits for frequencies above 1 kHz, attenuates signals below 1 kHz Trigger Level Range ±4 divisions from center of screen Motor Trigger Level 0.1 to 5 divisions from cent
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Specifications Table 1–1: Oscilloscope specifications (Cont.) Measurements Cursors Voltage difference between cursors (V) Time difference between cursors (T) Reciprocal of T in Hertz (1/T) Phase difference between cursors (Degrees) Automated Amplitude, Burst Width, Cycle Mean, Cycle RMS, Fall Time, Measurements Frequency, High, Low, Max, Mean, Min, Negative Duty Cycle, Negative Overshoot, Negative Width, Pk – Pk, Period, Positive Duty Cycle, Positive Overshoot, Positive Width, Rise Time, an
