Tektronix TekScope THS 710, TekScope THS 720 User Manual
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Form 080/01
THS 710 & THS 720
TekScope
User Manual
070-9247-02
This document applies to firmware version 1.00
and above.
Copyright Tektronix, Inc. 1995. 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 IsolatedChannel are trademarks of T ektronix, Inc.
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 shipment. 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.
In order to obtain service under this warranty , Customer must notify T ektronix 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 Tektronix, with shipping charges
prepaid. Tektronix shall pay for the return of the product to Customer if the shipment is to
a location within the country in which the Tektronix 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. Tektronix shall not be obligated to furnish
service under this warranty a) to repair damage resulting from attempts by personnel other
than Tektronix 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 CUSTOMER 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 Service.
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 Tektronix
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 expiration date or
Company purchase order number
Address Repair Protection (1,2 or 3 years)
City, State, Postal code Calibration Service (1,2,3,4 or 5 years)
Country Instrument model and serial number
Phone Instrument purchase date
Table of Contents
General Safety Summary iii. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preface v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
In This Manual v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Conventions vi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Getting Started
Product Description 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing the Battery Pack 1–5. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using External Power 1–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Tilt Stand 1–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Functional Check 1–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Basics
Functional Overview 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Understanding the Front Panel 2–1. . . . . . . . . . . . . . . . . . . . . . . . .
Using Scope Mode 2–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using Meter Mode 2–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compensating the Oscilloscope Probes 2–8. . . . . . . . . . . . . . . . . . .
T aking Floating Measurements 2–10. . . . . . . . . . . . . . . . . . . . . . . . .
Application Examples 2–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displaying an Unknown Signal 2–14. . . . . . . . . . . . . . . . . . . . . . . . .
Measuring Resistance 2–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Measuring the Frequency of a Clock Signal 2–18. . . . . . . . . . . . . . .
Measuring Propagation Delay 2–20. . . . . . . . . . . . . . . . . . . . . . . . . .
Triggering on a Missing Data Pulse 2–22. . . . . . . . . . . . . . . . . . . . .
Detecting Narrow Glitches 2–24. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Testing a Switching Transistor Drive Circuit 2–26. . . . . . . . . . . . . .
Measuring Instantaneous Power Dissipation
in a Switching Transistor 2–28. . . . . . . . . . . . . . . . . . . . . . . . . . .
Triggering at a Specific Motor RPM 2–30. . . . . . . . . . . . . . . . . . . . .
Using the Oscilloscope and DMM at the Same Time 2–32. . . . . . . .
Monitoring for Power Surges and Dropouts 2–34. . . . . . . . . . . . . . .
Triggering on a Video Field 2–36. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Triggering on a Video Line 2–38. . . . . . . . . . . . . . . . . . . . . . . . . . . .
THS 710 & THS 720 User Manual
i
Table of Contents
Reference
Introduction to Reference 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . .
ACQUIRE 3–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AUTORANGE 3–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CURSOR 3–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DISPLAY 3–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HARD COPY 3–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HOLD 3–19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HORIZONTAL Controls 3–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MEAS 3–24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
METER Mode 3–31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SAVE/RECALL 3–37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SCOPE Mode 3–40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TRIGGER Controls 3–46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UTILITY 3–53. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VERTICAL Controls 3–59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendices
Appendix A: Specifications A–1. . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix B: Factory Setup B–1. . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix C: Accessories C–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix D: Performance Verification D–1. . . . . . . . . . . . . . . . .
Test Record D–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Verification Procedures D–4. . . . . . . . . . . . . . . . . . . .
Appendix E: General Care and Cleaning E–1. . . . . . . . . . . . . . .
General Care E–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning E–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Glossary and Index
Glossary
Index
ii
THS 710 & THS 720 User Manual
General Safety Summary
Review the following safety precautions to avoid injury and prevent
damage to this product or any products connected to it.
Only qualified personnel should perform service procedures.
Injury Precautions
Use Proper Power Cord. To avoid fire hazard, use only the power cord
specified for this product.
Avoid Electric Overload. To avoid injury or fire hazard, do not apply
potential to any input, including the common inputs, that varies from
ground by more than the maximum rating for that input.
Avoid Electric Shock. To avoid injury or loss of life, do not connect or
disconnect probes or test leads while they are connected to a voltage
source.
Do Not Operate Without Covers. To avoid electric shock or fire hazard,
do not operate this product with covers or panels removed.
Do Not Operate in Wet/Damp Conditions. To avoid electric shock, do not
operate this product in wet or damp conditions.
Do Not Operate in an Explosive Atmosphere. To avoid injury or fire
hazard, do not operate this product in an explosive atmosphere.
Product Damage Precautions
Use Proper Power Source. Do not operate this product from a power
source that applies more than the voltage specified.
Do Not Operate With Suspected Failures. If you suspect there is damage
to this product, have it inspected by qualified service personnel.
THS 710 & THS 720 User Manual
iii
General Safety Summary
Safety Terms and Symbols
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 injury hazard not immediately accessible as
you read the marking.
CAUTION indicates a hazard to property including the product.
Symbols on the Product. These symbols may appear on the product:
DANGER
High Voltage
Protective Ground
(Earth) Terminal
ATTENTION
Refer to Manual
Double
Insulated
Certifications and Compliances
CSA Certified AC Adapter. CSA Certification includes the AC adapters
appropriate for use in the North America power network. All other
AC adapters supplied are approved for the country of use.
iv
Compliances. Consult the product specifications for Overvoltage
Category and Safety Class.
THS 710 & THS 720 User Manual
Preface
This User Manual describes the capabilities, operation, and
applications of the THS 710 and THS 720 TekScope instruments.
In This Manual
The following table shows you where to find information in this
manual.
If you are looking for:
Product overview Product Description on page 1–1
Details about a product feature Reference on page 3–1
Application examples Application Examples on page 2–13
Operation instructions Understanding the Front Panel on
Information about battery operation Changing the Battery Pack on
Information about using external
power
Information about making a hard copy HARD COPY on page 3–17
Technical specifications Specifications appendix on page A–1
Recommended accessories Accessories appendix on page C–1
Turn to:
Look up the front-panel button for the
feature
page 2–1
page 1–5
Using External Power on page 1–7
THS 710 & THS 720 User Manual
v
Preface
Conventions
TekScope instrument setups are shown in tables. The Application
Examples and Performance Verification sections use tables to show
specific setups. The Reference section uses similar tables to show the
complete contents of the menu system.
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
+
/– rocker to
set the value
for a parameter.
vi
THS 710 & THS 720 User Manual
Getting Started
Getting Started
In addition to a brief product description, this chapter covers the
following topics:
H How to change the battery pack
H How to use external power
H How to use the tilt stand
H How to perform a quick functional check
Product Description
The THS 710 and THS 720 TekScope instruments combine a
two-channel oscilloscope and a digital multimeter (DMM) in a
rugged, handheld package.
General Features
H Battery power or external power
H High-resolution, high-contrast display with temperature
compensation for clear visibility over a wide temperature range
H Onboard waveform, data, and setup storage
H RS-232 communication port to load setups, download wave-
forms, and make hard copies
H Fully programmable through the RS-232 communication port
THS 710 & THS 720 User Manual
1–1
Getting Started
Oscilloscope Features
The T ekScope instrument is a powerful, two-channel oscilloscope
with the following features:
H Autoranging for quick setup and hands-free operation
H 100 MHz (THS 720) or 60 MHz (THS 710) bandwidth with
H 500 MS/s (THS 720) or 250 MS/s (THS 710) sample rate and
H Separate digitizers for each channel (both channels always
H Waveform averaging and enveloping with hardware peak
selectable 20 MHz bandwidth limit
2,500 point record length
acquire simultaneously)
detection
H Digital Real Time digitizing (up to five-times oversampling),
sin(x)/x interpolation, and peak-detect acquisition to limit the
possibility of aliasing
H Independently isolated channels to allow improved safety for
measurements to 1000 V
while floating up to 600 V
RMS
RMS
using P5102 probes
H Cursors and 21 continuously updated, automatic measurements
H Simultaneous oscilloscope and meter operation on the same or
on separate signals
H Advanced pulse and video trigger capability
1–2
THS 710 & THS 720 User Manual
Getting Started
Meter Features
The TekScope instrument is also a full-featured DMM with the
following features:
H True RMS VAC, VDC, , continuity, and diode-check functions
H Autoranging or manual ranging
H Data logger plot of meter measurements over a period of time
H Max, min, delta max-min, relative-delta, and average statistics in
the readout
H Bar graph for an “analog meter” feel
H Capability to float independently to 600 V
RMS
H Overvoltage indicator warns when an overvoltage is applied to
the input
THS 710 & THS 720 User Manual
1–3
Getting Started
Input and Output Connectors
All input and output connectors are located on the top and side
panels as shown below.
NOTE. See the back of the instrument for maximum voltage ratings.
Top panel
1–4
Side panel
THS 710 & THS 720 User Manual
Replacing the Battery Pack
For portable operation, use the rechargeable battery pack.
You can replace the battery pack without losing any saved informa-
tion. The current setup, saved setups, saved waveforms, and saved
data are all stored in nonvolatile memory that does not depend on
battery power .
CAUTION. To prevent loss of saved information, set the ON/STBY
switch to STBY before removing the battery back.
Getting Started
Battery pack
THS 710 & THS 720 User Manual
1–5
Getting Started
Battery Life
From a full charge, you can operate the TekScope instrument
continuously for approximately two hours. You can extend the
battery life by using automatic Power Off Time-out or Backlight
Time-out. Refer to page 3–56 for a description of these features.
The TekScope instrument turns off automatically when the battery
runs low. A low-battery message appears in the display about ten
minutes before the automatic shutdown.
Nickel-cadmium batteries can lose capacity permanently if not
allowed to discharge completely. Whenever possible, allow the
battery to discharge completely before you recharge it to minimize
this capacity loss.
Charging the Battery Pack
Before using the battery for the first time, it must be charged. You
can use external power to charge the battery pack while it is in the
TekScope instrument. Or you can charge the battery pack with the
optional external battery charger. Typical battery charging times are
listed below .
Configuration
Battery pack in TekScope instrument 20 hours
Battery pack in external charger 1.5 hours
CAUTION. To avoid loss of saved information when a battery pack is
not installed, set the ON/STBY control to STBY before disconnecting
external power.
Typical Charging Time
1–6
THS 710 & THS 720 User Manual
Using External Power
Using external power from the AC adapter or cigarette lighter
adapter has the following advantages:
H Saves internal battery power for portable operation later
H Charges internal battery pack
H Allows extended operation; the Standby Time-out and Backlight
Time-out features are automatically disabled when external
power is used
H Maintains floating measurement capability of the oscilloscope
channels and DMM
Attach the external power source as shown below.
Getting Started
The DC INPUT disconnects itself if an overvoltage is applied. If this
occurs, disconnect and then reconnect the AC adapter or cigarette
lighter adapter to resume operation from external power .
External power to
DC INPUT
CAUTION. To avoid overheating, do not connect external power while
the instrument is in a confined space, such as in the soft case.
THS 710 & THS 720 User Manual
1–7
Getting Started
Using the Tilt Stand
A built-in tilt stand folds out and snaps back into place when not in
use. For benchtop use, lock the tilt stand in place with the hinged
flap. To hang the TekScope instrument over a nail, rotate the tilt
stand 180°. You can also extend the hinged flap as shown to hang the
instrument from a ladder rung or over the top of a door.
1–8
THS 710 & THS 720 User Manual
Functional Check
After you install batteries or connect external power, you can
perform this quick functional check to verify that your TekScope
instrument is operating correctly.
1. Press the ON/OFF button to turn on the TekScope instrument.
2. After a few seconds, you should see a window with the message
Power-On self check PASSED. Press the CLEAR MENU button.
3. Press the SCOPE button.
4. Connect the oscilloscope probe to the channel 1 input BNC.
Attach the probe tip and reference lead to the PROBE COMP
connectors on the right side of the TekScope instrument.
Getting Started
Ch 1
Probe reference lead to
Probe tip to PROBE COMP
THS 710 & THS 720 User Manual
1–9
Getting Started
5. Press the AUTORANGE button. Within a few seconds, you
6. Press the METER button.
7. Press the VDC bezel button
8. Press the AUTORANGE button.
9. Connect meter leads to the TekScope instrument and touch the
should see a square wave in the display (approximately 1.2 kHz).
If you want, repeat steps 4 and 5 for channel 2 of the oscillo-
scope.
meter lead tips to the PROBE COMP output as shown below.
DMM lead to PROBE COMP
COM lead to
10.Verify that the TekScope instrument measures an average DC
voltage of 2.5 ± 0.25 V.
1–10
THS 710 & THS 720 User Manual
Operating Basics
Functional Overview
This section covers the following topics:
H Understanding the front panel
H Using scope mode
H Using meter mode
H Connecting and using the probes
H Taking floating measurements
You can find specific information about each of the controls in the
Reference chapter of this manual.
Understanding the Front Panel
The front panel has buttons for the functions you use most often and
menus to access more specialized functions. With the autorange
feature, you can setup the TekScope instrument automatically in both
scope and meter modes.
Using the Menu System
To use the menu system, follow the steps shown on the next
two pages.
THS 710 & THS 720 User Manual
2–1
Functional Overview
1. Press a front-panel button to display the menu you want to use.
2. Press a bezel button to choose a menu item. If a pop-up menu
appears, continue to press the bezel button to choose an item in
the pop-up menu. You may need to press the Select Page bezel
button to access additional menu items.
2–2
THS 710 & THS 720 User Manual
Functional Overview
3. Certain menu choices require you to set a numerical parameter to
+
complete the setup. Use the
/– rocker to adjust the parameter
value or press the TOGGLE button to reset the parameter to its
default value.
4. If the OK bezel button is displayed, press it to confirm
your choice.
THS 710 & THS 720 User Manual
2–3
Functional Overview
Using the Dedicated Buttons
You can use the dedicated buttons below to take direct actions.
These buttons do not require the use of menus.
16
15
31
2
4
14
5
6
87910111213
1. HARD COPY. Initiates a hard copy using the RS-232 port.
2. HOLD. Stops/restarts oscilloscope acquisition or holds/resets
meter readout.
3. AUTORANGE. Selects oscilloscope or meter Autorange
function.
2–4
THS 710 & THS 720 User Manual
Functional Overview
4. CLEAR MENU. Clears menu from display.
5. TRIGGER LEVEL. Adjusts trigger level.
6. SET LEVEL TO 50%. Sets trigger level to midpoint of
oscilloscope waveform.
7. HORIZONTAL POSITION. Adjusts oscilloscope waveform
horizontal position.
8. MAG. Turns 10X horizontal magnification on and off.
9. SEC/DIV. Adjusts horizontal scale factor for oscilloscope or data
logger.
10. VERTICAL POSITION. Adjusts oscilloscope waveform vertical
position.
11. WAVEFORM OFF. Removes selected oscilloscope waveform
from display.
12. VOLTS/DIV. Adjusts oscilloscope vertical scale factor or meter
range.
13. ON/STBY. Selects on or standby. Does not disconnect power
from the instrument.
14. CH 1, CH 2, MATH, REF A, REF B. Displays waveform and
chooses selected waveform.
15. SCOPE. Selects scope mode.
16. METER. Selects meter mode.
THS 710 & THS 720 User Manual
2–5
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