Tektronix THS730A, THS710A, THS720P, THS720A User Manual

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.

that in all previously published material. Specifications and price change privileges reserved. Printed in the U.S.A. T ektronix, Inc., P.O. Box 1000, Wilsonville, OR 97070–1000 TEKTRONIX and TEK are registered trademarks of T ektronix, Inc. T ek Secure is a registered trademark of Tektronix, Inc. T ekTools, TekScope, and IsolatedChannel are trademarks of Tektronix, Inc. Pursuant to DFARS 252.227-7013(e), T ektronix Inc. hereby grants to the Government a nonexclusive, paid-up license

throughout the world of the scope set forth therein for Government purposes for any commercial manuals provided by T ektronix Inc. under this contract.

WARRANTY

T ektronix 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 T ektronix distributor. If any such product proves defective during this warranty period, T ektronix, 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 service under this warranty, Customer must notify Tektronix of the defect before the expiration of the warranty period and make suitable arrangements for the performance of service. Customer shall be responsible for packaging and shipping the defective product to the service center designated by T ektronix, with shipping charges prepaid. T ektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the T ektronix service center is located. Customer shall be responsible for paying all shipping charges, duties, taxes, and any other charges for products returned to any other locations.

This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate maintenance and care. T ektronix shall not be obligated to furnish service under this warranty a) to repair damage resulting from attempts by personnel other than T ektronix representatives to install, repair or service the product; b) to repair damage resulting from improper use or connection to incompatible equipment; or c) to service a product that has been modified or integrated with other products when the effect of such modification or integration increases the time or difficulty of servicing the product.

THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THIS PRODUCT IN LIEU OF ANY OTHER WARRANTIES, EXPRESSED OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX’ RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUST OMER FOR BREACH OF THIS WARRANTY. TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT , SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.

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 documentation, recall assurance, and reminder notification of scheduled calibration. Coverage begins upon registration; you may purchase up to five years of Calibration Services.

Service Assurance Advantages

H Priced well below the cost of a single repair or calibration H Avoid delays for service by eliminating the need for separate purchase authorizations from your company H Eliminates unexpected service expenses

For Information and Ordering

For more information or to order Service Assurance, contact your local T ektronix representative and provide the information below. Service Assurance may not be available in locations outside the United States of America.

Name VISA or Master Card number and expiration Company date or purchase order number Address Repair Protection (1,2, or 3 years) City , State, Postal code Calibration Services (1,2,3,4, or 5 years) Country Instrument model and serial number Phone Instrument purchase date

T o learn the location of your nearest Tektronix representative, please call 1-800-TEK-WIDE in North America, 1-503-627-7111 elsewhere, or look us up on the World Wide Web at http://www.tek.com.

Specifications

Operating Information

Theory of Operation

General Safety Summary v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Service Safety Summary vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Preface ix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Related Manuals ix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Conventions x. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Specifications 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Internal and External Power Sources 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Understanding the Front Panel 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Connecting and Using the Probes 2–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Main Board 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Inverter Board 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Display Module 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Switch Assembly 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Performance Verification

T est Record 4–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Performance Verification Procedures 4–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Adjustment Procedures

Required Equipment 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Overview of the Adjustment Process 5–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Accessing the Adjustment-Lockout Jumper 5–3. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Oscilloscope Adjustment 5–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Meter Adjustment 5–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Replacing the Adjustment-Lockout Jumper 5–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maintenance

Preparation 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Preventing ESD 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Inspection and Cleaning 6–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removal and Installation Procedures 6–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting 6–28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Unpacking and Repacking Instructions 6–40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

THS710A, THS720A, THS730A & THS720P Service Manual

Table of Contents

Options

Electrical Parts List

Diagrams

Mechanical Parts List

Options 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical Parts List 8–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Diagrams 9–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts Ordering Information 10–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using the Replaceable Parts List 10–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

THS710A, THS720A, THS730A & THS720P Service Manual

List of Figures

Table of Contents

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: Module-level block diagram 3–2. . . . . . . . . . . . . . . . . . . . . . .

Figure 5–1: Location of adjustment-lockout jumper 5–4. . . . . . . . . . . . . .

Figure 5–2: Oscilloscope adjustment setups 5–6. . . . . . . . . . . . . . . . . . . . .

Figure 5–3: Meter adjustment setups 5–9. . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 5–4: Relocating the adjustment-lockout jumper 5–11. . . . . . . . . . .

Figure 6–1: Removing the tilt stand 6–8. . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 6–2: Installing the tilt stand 6–9. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 6–3: Installing a new front-panel label 6–10. . . . . . . . . . . . . . . . . . .

Figure 6–4: Removing the battery door 6–12. . . . . . . . . . . . . . . . . . . . . . . .

Figure 6–5: Assembling a new front cover 6–13. . . . . . . . . . . . . . . . . . . . . .

Figure 6–6: Installing the gasket 6–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 6–7: Installing the handle 6–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 6–8: Removing the display module 6–17. . . . . . . . . . . . . . . . . . . . . .

Figure 6–9: Opening the display cable connector 6–18. . . . . . . . . . . . . . . .

Figure 6–10: Routing cables to the inverter board 6–19. . . . . . . . . . . . . . .

Figure 6–11: Lifting the chassis 6–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 6–12: Foam pad and hole plug locations on the back cover 6–21. .

Figure 6–13: Routing the battery wires 6–22. . . . . . . . . . . . . . . . . . . . . . . . .

Figure 6–14: Removing the main board and switch flex-circuit

assembly 6–24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 6–15: Foam pad locations on the chassis 6–25. . . . . . . . . . . . . . . . . .

Figure 6–16: Reassembling the chassis 6–27. . . . . . . . . . . . . . . . . . . . . . . . .

Figure 6–17: Battery connector location 6–29. . . . . . . . . . . . . . . . . . . . . . . .

Figure 6–18: Bypassing the ON/STBY switch 6–31. . . . . . . . . . . . . . . . . . .

Figure 10–1: Exploded diagram 10–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

THS710A, THS720A, THS730A & THS720P Service Manual

iii

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: Internal inspection check list 6–3. . . . . . . . . . . . . . . . . . . . . . .

Table 6–2: Removal and installation procedures 6–6. . . . . . . . . . . . . . . . .

Table 7–1: TekScope instrument options 7–1. . . . . . . . . . . . . . . . . . . . . . .

Table 10–1: Replaceable standard accessories 10–6. . . . . . . . . . . . . . . . . . .

THS710A, THS720A, THS730A & THS720P Service Manual

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 Personal Injury

Connect and Disconnect Properly . Do not connect or disconnect probes or test

leads while they are connected to a voltage source. Observe All Terminal Ratings. To avoid fire or shock hazard, observe all ratings

and markings on the product. Consult the product manual for further ratings information before making connections to the product.

Do not apply a potential to any terminal, including the common terminal, that exceeds the maximum rating of that terminal.

Replace Batteries Properly. Replace batteries only with the proper type and rating specified.

Recharge Batteries Properly. Recharge batteries for the recommended charge cycle only.

Use Proper AC Adapter. Use only the AC adapter specified for this product. Do Not Operate Without Covers. Do not operate this product with covers or panels

removed. Avoid Exposed Circuitry. Do not touch exposed connections and components

when power is present. Do Not Operate With Suspected Failures. If you suspect there is damage to this

product, have it inspected by qualified service personnel.

Do Not Operate in Wet/Damp Conditions. Do Not Operate in an Explosive Atmosphere.

THS710A, THS720A, THS730A & THS720P Service Manual

General Safety Summary

Symbols and Terms

T erms 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.

T erms 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 injury hazard not immediately accessible as you read the

marking. CAUTION indicates a hazard to property including the product.

Symbols on the Product. The following symbols may appear on the product:

Battery Recycling

CAUTION

Refer to Manual

WARNING

High Voltage

Double

Insulated

Protective Ground

(Earth) Terminal

This product contains a Nickel Cadmium (NiCd) battery, which must be recycled or disposed of properly. For the location of a local battery recycler in the U.S. or Canada, please contact:

RBRC (800) BATTERY Rechargeable Battery Recycling Corp. (800) 227-7379 P.O. Box 141870 www.rbrc.com Gainesville, Florida 32614

THS710A, THS720A, THS730A & THS720P Service Manual

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 applicable), and disconnect test leads before removing protective panels, soldering, or replacing components.

To avoid electric shock, do not touch exposed connections.

THS710A, THS720A, THS730A & THS720P Service Manual

vii

Service Safety Summary

viii

THS710A, THS720A, THS730A & THS720P Service Manual

Preface

Related Manuals

This is the Service Manual for the THS710A, THS720A, THS730A, and THS720P TekScope instruments. This manual provides information to troubleshoot and repair the instrument to the module level.

Additional documentation for the instrument is contained in the related manuals listed below.

User Manual

Language

English 070-9731-XX 070-9741-XX 070-9751-XX French 070-9732-XX 070-9742-XX German 070-9733-XX 070-9743-XX Italian 070-9734-XX 070-9744-XX Korean 070-9735-XX 070-9745-XX Portuguese 070-9736-XX 070-9746-XX Spanish 070-9737-XX 070-9747-XX Simplified Chinese 070-9738-XX 070-9748-XX Traditional

Chinese Japanese 070-9740-XX 070-9799-00

Part Number

070-9739-XX 070-9749-XX

Reference Part Number

Programmer Manual Part Number

THS710A, THS720A, THS730A & THS720P Service Manual

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 mode or meter mode.

2. Press this button on the front panel.

3. Press this bezel button.

6. 7. —

8. 9. 10.

4. Press the bezel button again until this selection is highlighted.

5. Use the

the value for a parameter.

/– rocker to set

THS710A, THS720A, THS730A & THS720P Service Manual

Specifications

Sequence

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 n symbol are checked in the chapter Performance Verification.

All specifications apply to all four instruments unless noted otherwise. All specifications assume horizontal MAG is off, unless noted otherwise. To meet specifications, two conditions must first be met:

H The TekScope instrument must have been operating continuously for ten

minutes within the operating temperature range specified. H You must perform the Compensate Signal Path operation, accessible through

the utility menu, if the ambient temperature changes by more than 5° C.

T able 1–1: Oscilloscope specifications

Acquisition

Acquisition Modes Sample (Normal), Peak detect, Envelope, and Average Acquisition Rate,

typical

ingle

Inputs

Input Coupling DC, AC, or GND Input Impedance,

DC Coupled Maximum Voltag

Between Signal an Common at Input B

Up to 25 waveforms per second (2 channels, sample acquisition mode, MAG on, no measurements)

Acquisition Mode Acquisition Stops After

Sample, Peak Detect Single acquisition, one or two

channels simultaneously

Average, Envelope N acquisitions, one or two chan-

nels simultaneously, N is settable from 2 to 256 or ∞

1 M ±1% in parallel with 25 pF ±2 pF

Overvoltage Category Maximum Voltage

CA T II Environment (refer to page 1–13)

CA T III Environment (refer to page 1–13)

For steady-state sinusoidal waveforms, derate at 20 dB/decade above 100 kHz to 13 V Category description on page 1–13.

at 3 MHz and above. Also, refer to Overvoltage

300 V

150 V

RMS

THS710A, THS720A, THS730A & THS720P Service Manual

1–1

Specifications

pe d d

Rise Time

T able 1–1: Oscilloscope specifications (Cont.)

Inputs

Maximum Voltage Between Common and Earth Ground at BNC

Maximum Voltage, Channel-to-Channel Commons

Channel-to-Channel Common Mode Rejection, typical

Channel-to-Channel Crosstalk, typical

Common to Chassis Capacitance, typical

Vertical

Number of Channels 2 Digitizers 8 bit resolution, separate digitizers for each channel sample

VOL TS/DIV Range 5 mV/div to 50 V/div at input BNC Polarity Normal and Invert Position Range ±10 divisions n Analog Bandwidth

at BNC, DC Coupl (typical at 5 mV/div, guaranteed at all other settings)

Peak Detect or Env lope Bandwidth, typical (25 MS/s or slower)

600 V

(CAT II) or 300 V

RMS

(CAT III), using rated connectors or

RMS

accessories 30 V

30 V

, 42.4 Vpk, using noninsulated connectors and acessories

RMS

, 42.4 Vpk, using noninsulated connectors and acessories

RMS

100:1 at frequencies ≤50 MHz, measured on MATH Ch1 – Ch2 waveform, with test signal applied between signal and common of both channels, and with the same VOLTS/DIV and coupling settings on each channel

≥100:1 at 50 MHz, measured on one channel, with test signal applied between signal and common of the other channel, and with the same VOL TS/DIV and coupling settings on each channel

55 pF

simultaneously

THS710A THS720A THS720P THS730A

60 MHz at input BNC

100 MHz at input BNC

(90 MHz above 35° C)

100 MHz at input BNC

(90 MHz above 35° C)

THS710A THS720A THS720P THS730A

50 MHz

75 MHz 75 MHz 85 MHz

200 MHz at input BNC

(180 MHz above 35° C)

1–2

Analog Bandwidth

Selectable between 20 MHz or full

Limit, typical Lower Frequency

Limit, AC Coupled,

≤10 Hz at BNC, reduced by a factor of ten when using a 10X passive probe

typical

at BNC,

typical Peak Detect or Enve-

lope Pulse Response,

THS710A THS720A THS720P THS730A

5.8 ns

3.5 ns 3.5 ns 1.75 ns

Captures 50% or greater amplitude of pulses ≥ 8 ns wide (≥ 20 ns wide at 500 ns/div)

typical

THS710A, THS720A, THS730A & THS720P Service Manual

T able 1–1: Oscilloscope specifications (Cont.)

reme

forms

Sample Rate R

SEC/DIV R

Type

Vertical

DC Gain Accuracy ±2% for Sample or Average acquisition mode Position Accuracy ±[0.4% × |(position × volts/div)| + (0.1 div × volts/div)] n DC Measu

ccuracy, Averag Acquisition Mode Using ≥16 Wave-

DC Measurement Accuracy , Sample Acq. Mode, typical

Horizontal

Record Length 2500 samples for each channel

(including MAG)

n Sample Rate and Delay Time Accuracy

Delay Time Range Zero to 50 s

Internal Trigger

n Trigger Sensitivity, Edge Trigger (THS710A, THS720A, and THS720P)

n Trigger Sensitivity, Edge Trigger (THS730A)

ang

Measurement Type Accuracy Absolute voltage measurements ±[2% × |reading +

(position × volts/div)| + (0.1 div × volts/div)]

Delta voltage between any two waveforms acquired under same setup

±[2% × |reading + (position × volts/div)| + (0.15 div × volts/div) +

0.6 mV]

THS710A THS720A THS720P THS730A

5 S/s to 250 MS/s, in a

1.25, 2.5, 5 sequence

THS710A THS720A THS720P THS730A

10 ns/div to 50 s/div

±200 ppm over any ≥1 ms time interval

Coupling Sensitivity

DC 0.35 div from DC to 50 MHz,

Coupling Sensitivity

DC 0.35 div from DC to 50 MHz,

5 S/s to 500 MS/s, in a

1.25, 2.5, 5 sequence

5 ns/div to 50 s/div

±[2% × |reading| + (0.05 div × volts/div)]

5 S/s to 500 MS/s, in a

1.25, 2.5, 5 sequence

5 ns/div to 50 s/div

increasing to 1 div at 100 MHz (90 MHz above 35° C)

increasing to 1.5 div at 200 MHz (180 MHz above 35° C)

Specifications

5 S/s to 1 GS/s, in a 1.25, 2.5, 5 sequence

2 ns/div to 50 s/div

THS710A, THS720A, THS730A & THS720P Service Manual

1–3

Specifications

Type

T able 1–1: Oscilloscope specifications (Cont.)

Internal Trigger

igger Sensitivity, Edge Trigger typical

Trigger Level Range ±4 divisions from center of screen Motor Trigger Level

Range (THS720P) Trigger Level

Accuracy , typical SET LEVEL TO 50%,

typical Width Range, Pulse

Trigger T ype, typical Width Tolerance

Range, Pulse Trigger Type, typical

Sensitivity, Video Trigger T ype, typical

ignal Formats an

Field Rates, Video

igger

Holdoff Range 495 ns to 10 s

External Trigger

External Trigger , Maximum Input Voltage

External Trigger Coupling

External Trigger Levels

External Trigger Sensitivity

Coupling Sensitivity

NOISE REJ 3.5 times the DC-coupled limits HF REJ

LF REJ 1.5 times the DC-coupled limits

0.1 to 5 divisions from center screen, polarity depends on slope selection

±0.2 divisions, for signals having rise and fall times ≥20 ns

Operates with input signals ≥50 Hz

99 ns to 1 s, with resolution of 33 ns or approximately 1% of setting (whichever is greater)

5%, 10%, 15%, or 20%

Composite video signal with negative sync pulse amplitude from 0.6 to 2.5 divisions

Broadcast systems Supports NTSC, PAL, and

Interlaced Trigger on selected line of odd

Non-interlaced T rigger on selected line or any line Line Rates 15 kHz to 65 kHz, in five ranges

600 V

CAT II or 300 V

RMS

CAT III (refer to page 1–13)

RMS

DC only

+0.2 V or +2 V, selectable

500 mV

from DC to 1 MHz, increasing to 1 V

p-p

signal centered at selected trigger level

1.5 times the DC-coupled limit from DC to 30 kHz, attenuates signals above 30 kHz

for frequencies above 1 kHz, attenuates signals below 1 kHz

SECAM

field, selected line of even field, or any line

at 5 MHz, with

p-p

1–4

THS710A, THS720A, THS730A & THS720P Service Manual

Specifications

Amp

T able 1–1: Oscilloscope specifications (Cont.)

Measurements

Cursors Voltage difference between cursors (DV)

Time difference between cursors (DT) Reciprocal of DT in Hertz (1/DT) Phase difference between cursors (DDegrees)

Automated Measurements

Voltage and Current Harmonics (THS720P)

Number of Harmonics First 31 harmonics of signal with fundamental frequency between

Harmonics

litu

Accuracy

Harmonics Pha

ccurac

THD-F Measurement Total harmonic distortion relative to the fundamental amplitude

THD-F Accuracy ±4% THD-R Measurement Total harmonic distortion relative to the RMS amplitude

THD-R Accuracy ±4% Frequency Accuracy ±0.2% of reading

Power Measurements (THS720P)

True Power Measurement

Apparent Power Measurement

Reactive Power Measurement

Power Measurements

Accuracy

Amplitude, Burst Width, Cycle Mean, Cycle RMS, Fall Time, 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, and RMS

30 Hz and 450 Hz Accuracies below are stated as a percent of the fundamental amplitude

and are valid only if peak-to-peak amplitude is ≥4 divisions and number of averages ≥16

Fundamental 2 – 11 12 – 21 22 – 31 ±2.5% ±2.5% ±4% ±4% Fundamental 2 – 11 12 – 21 22 – 31 — ±4 ° ±8 ° ±8 °

THD-F 

THD-R 

W 







RMS

 V

RMS

Vn A



RMS



RMS

 A

measured over an integral number of cycles that contain n sample points

VA  V

VAR  (VA)2 W

RMS



 A

RMS

±4% at the BNCs (not including probe uncertainty)

THS710A, THS720A, THS730A & THS720P Service Manual

1–5

Specifications

DC Coupled

T able 1–1: Oscilloscope specifications (Cont.)

Power Measurements (THS720P)

PF Measurement

Power factor (PF) 

q Measurement q is the phase difference between the fundamental components of

voltage and current. Positive angle means voltage leads current.

Negative angle means voltage lags current. DPF Measurement Displacement power factor (DPF) = cos  Power Factor Mea-

±0.05 surements Accuracy

With P6117 Probe

nalog Bandwidth,

THS710A THS720A THS720P THS730A

60 MHz 100 MHz

true p owe r

apparent power

100 MHz



200 MHz

Probe Attenuation 10X Maximum Voltag

Between Probe Ti and Reference Lead

Overvoltage Category Maximum Voltage

CA T II Environment (refer to

page 1–13)

CA T III Environment (refer to

page 1–13)

For steady-state sinusoidal waveforms, derate at 20 dB/decade above

900 kHz to 13 V

Category description on page 1–13. Maximum Voltage

30 V Between Reference Lead and Earth Ground Using P6117 Probe

Maximum Voltage,

30 V Channel-to-Channel Reference Leads Using P6117 Probe

RMS

, 42.4 V

(90 MHz above 35° C)

at 27 MHz and above. Also, refer to Overvoltage

(90 MHz above 35° C)

300 V

RMS

150 V

RMS

(180 MHz above 35° C)

1–6

THS710A, THS720A, THS730A & THS720P Service Manual

T able 1–1: Oscilloscope specifications (Cont.)

DC Coupled

Reference Lead

Reference

With P5102 Probe

nalog Bandwidth,

THS710A THS720A THS720P THS730A

60 MHz 100 MHz

100 MHz

Specifications

100 MHz

Probe Attenuation 10X Maximum Voltag

Between Probe Ti and Reference Lead,

Overvoltage Category Maximum Voltage

CA T II Environment (refer to page 1–13)

CA T III Environment (refer to page 1–13)

Maximum Voltag Between Probe Ti and AC Coupled

Maximum Voltag Between Lead and Earth Ground

Overvoltage Category Maximum Voltage

CA T II Environment ±1000 V

CA T III Environment

Overvoltage Category Maximum Voltage

CA T II Environment 600 V CA T III Environment 300 V

(90 MHz above 35° C)

1000 V

RMS

600 V

RMS

±600 V

RMS RMS

THS710A, THS720A, THS730A & THS720P Service Manual

1–7

Specifications

Res

T able 1–2: DMM specifications

General

Resolution 33⁄4 digit, 4000 count full scale reading except as noted Input Resistance, AC

or DC Voltage Input Capacitance,

AC or DC Voltage, typical

Maximum Voltag Between DMM an COM Inputs

Maximum Voltag Between DMM o COM Input and Earth

oun

DC Voltage

anges and

olution

n Accuracy ±(0.5% of reading + 5 counts) Normal Mode

Rejection, typical Common Mode

Rejection, typical

10 M ±10%

≤100 pF

Overvoltage Category Maximum Voltage

CA T I Environment (refer to

640 V

RMS

(880 VDC)

page 1–13)

CA T II Environment (refer to

600 V

RMS

page 1–13)

CA T III Environment (refer to

300 V

RMS

page 1–13)

Overvoltage Category Maximum Voltage

CA T I Environment (refer to

640 V

RMS

(880 VDC)

page 1–13)

CA T II Environment (refer to

600 V

RMS

page 1–13)

CA T III Environment (refer to

300 V

RMS

page 1–13)

Range Resolution

400.0 mV

0.1 mV

4.000 V 1 mV

40.00 V 10 mV

400.0 V 100 mV

880 V 1 V

Rejects AC signals by >60 dB at 50 Hz or 60 Hz (user selectable)

Rejects AC signals by >100 dB at 50 Hz or 60 Hz (user selectable)

1–8

THS710A, THS720A, THS730A & THS720P Service Manual

Specifications

Res

500

Res

Resis

reme

T able 1–2: DMM specifications (Cont.)

AC Voltage

Conversion Type AC conversions are true RMS. The AC measurement is based on the

AC and DC components of the signal as shown below:

AC Measurement = RMS(AC+DC) – DC

anges and

olution

n Accurac (40 Hz to

Common Mode Rejection, typical

/Resistance

anges and

olution

n Accurac

Bias Voltage for Full

cale

Measu

Hz)

tanc nt, typical

Range Resolution

400.0 mV

4.000 V 1 mV

40.00 V 10 mV

400.0 V 100 mV 640 V 1 V

Input Waveform Maximum Error

Sinusoidal waveforms Nonsinusoidal waveforms with

crest factor up to 3 Rejects AC signals by >60 dB at DC, 50 Hz, and 60 Hz

Range Resolution

400.0 

4.000 k 1 

40.00 k 10 

400.0 k 100 

4.000 M 1 k

40.00 M 10 k

Range Maximum Error

All ranges except 40 M ±(0.5% of reading + 2 counts) 40 M ±(2% of reading + 5 counts) for

Range Full Scale Bias Voltage

400.0  350 mV

4.000 k

40.00 k 350 mV

400.0 k 350 mV

4.000 M 400 mV

40.00 M 1.10 V

0.1 mV

±(2% of reading + 5 counts) ±(4% of reading + 5 counts)

0.1 

≤60% relative humidity

200 mV

THS710A, THS720A, THS730A & THS720P Service Manual

1–9

Specifications

Open Cir

T able 1–2: DMM specifications (Cont.)

/Resistance

cuit Voltage,

typical

Continuity Check

Indication An audible tone is generated when measured resistance is below 50 ,

Open Circuit Voltage, typical

Test Current, typical 1 mA

Diode Check

Range Zero to 2 V, measures forward voltage drop of semiconductor junction Voltage Accuracy,

typical Open Circuit Voltage,

typical Test Current, typical 1 mA

Data Logger

Horizontal Scale Range

Vertical Zoom Range 2X, 5X, or 10X

Range Open Circuit Voltage

400.0 

All other ranges ≤1.2 V

typical

4 V

±25%

4 V

30 s/div to 24 hours/div (4 minutes to 8 days, full scale)

4.8 V

1–10

T able 1–3: General specifications

Display

Display Type 4.7 in (120 mm) diagonal liquid crystal Display Resolution 320 horizontal by 240 vertical pixels Display Contrast Adjustable, temperature compensated Backlight Intensity,

typical

35 cd/m

THS710A, THS720A, THS730A & THS720P Service Manual

Specifications

ery Char

T able 1–3: General specifications (Cont.)

RS-232 Interface

Device Type DTE. at RJ-45 connector Pinout Signal Pin Number at

9-pin Null Modem Adapter

RTS out 1 8 TXD out 2 6 RXD in 3 5 GND 5 4 DTR out 6 3 CTS in 7 7 RTS out 8 8 DSR in (not used) 4 2 DCD in (not used) 7 1

Probe Compensator Output

Output Voltage, typical

Frequency, typical 1.2 kHz

Power Source

Battery Replaceable Ni-Cd battery pack Battery Life, typical Approximately two hours of continuous use from a full charge Low Battery Indica-

tion, typical Battery Saver Standby Time-out and Backlight Time-out extend battery life. Time-out

Batt Time, typical

External Power 12 VDC nominal, center positive; Operates with input from 10 VDC to

ging

5.0 V into ≥1 M load

Low battery message first appears approximately ten minutes before the instrument powers off automatically

ranges from 1 minute to 15 minutes, or off. With T ekScope instrument operat-

ing With T ekScope instrument turned

off In external charger 1.5 hours

15 VDC

9 hours

Pin Number at RJ-45 Connector

The DC INPUT disconnects itself automatically if >15 VDC is applied. If this occurs, disconnect the overvoltage and then reconnect to a voltage in the proper range.

Memory Retention, typical

Fuse This instrument has no user-replaceable fuses

All memory is retained indefinitely with battery removed and without external power applied.

THS710A, THS720A, THS730A & THS720P Service Manual

1–11

Specifications

Temper

Random Size

T able 1–3: General specifications (Cont.)

Environmental

atu

Humidit

ltitu

Vibration Operating 2.66 g

Drop Resistance, typical

Moisture Resistance Meets IEC529, IP43 with DC input hole plug, I/O port hole plug, and

Mechanical

ight With battery installed 3.2 lbs (1.5 kg)

Adjustment Interval

The recommended adjustment interval is one year

Operating –10° C to +50° C

Nonoperating –20° C to +60° C

+40° C or below ≤95% relative humidity

+41° C to +50° C ≤75% relative humudity

Operating 2,000 m

Nonoperating 15,000 m

from 5 Hz to 500 Hz,

RMS

10 minutes on each axis

Nonoperating 3.48 g

10 minutes on each axis

Survives a 30 in (76 cm) drop onto concrete with only cosmetic damage

battery door installed.

Height 8.53 in (217 mm)

Width 6.95 in (177 mm)

Depth 2.00 in (50.8 mm)

With all standard accessories in

soft carry case

When packaged for domestic

shipment

7.5 lbs (3.4 kg)

9.0 lbs (4.1 kg)

from 5 Hz to 500 Hz,

RMS

1–12

THS710A, THS720A, THS730A & THS720P Service Manual

Specifications

Over

T able 1–3: General specifications (Cont.)

Certifications and Compliances

Certifications Listed UL31 11-1 and CAN/CSA-C22.2 No. 1010.1-92, complies with

EN61010-1/A2

voltage CategoryCategory Examples

CA T III A typical CAT III environment is

the power distribution system within a building or factory. These environments are somewhat protected from lightning strikes, but susceptible to switching transients and other disturbances that may generate high voltage impulses.

CA T II A typical CAT II environment is

the 120/240 V distribution system within a lab or office. These environments are fairly well protected from external high voltage disturbances.

CA T I A typical CAT II environment is

circuitry inside electrical or electronic equipment that is powered by a power supply or a battery.

EC Declaration of Conformity

Meets the intent of Directive 89/336/EEC for Electromagnetic Compatibility and Low-Voltage Directive 73/23/ECC for Product Safety as ammended by 93/68/EEC. Compliance was demonstrated to the following specifications as listed in the official Journal of the European Communities:

EN 55011 Class A: Radiated and Conducted Emissions

EN 50081–1 Emissions:

EN 50082–1 Immunity:

EN 61010–1 Safety

Tektronix-supplied ferrite bead required on instrument end of RS-232 cable

Performance criteria: ≤ 5.0 div increase in peak to peak noise (Sample acquisition mode, full bandwidth); otherwise, ≤ 1.0 div increase in peak to peak noise

Applies to instrument operating with Tektronix-supplied AC adapter

THS710A, THS720A, THS730A & THS720P Service Manual

EN 60555–2 Power Harmonics

IEC 801–2 Electrostatic Discharge IEC 801–3 RF Radiated

IEC 801–4 Fast Transients IEC 801–5 Surge

1–13

Specifications

1–14

THS710A, THS720A, THS730A & THS720P Service Manual

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