Tektronix TDS3000B Series Service manual

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.
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TEKTRONIX, TEK, TEKPROBE, and Tek Secure are
registered trademarks of Tektronix, Inc.
DPX, WaveAlert, and e*Scope are trademarks of
Tektronix, Inc.
Reference
TDS3000B Series
Digital Phosphor
Oscilloscopes
071-0923-00
*P071092300*
071092300

WARRANTY SUMMARY
Tektronix warrants that the products that it manufactures and
sells will be free from defects in materials and workmanship
for a period of one (1) year from the date of shipment from an
authorized Tektronix distributor. If a product proves defective
within the respective period, Tektronix will provide repair or
replacement as described in the complete warranty statement.
To arrange for service or obtain a copy of the complete
warranty statement, please contact your nearest Tektronix sales
and service office.
EXCEPT AS PROVIDED IN THIS SUMMARY OR THE
APPLICABLE WARRANTY STATEMENT, TEKTRONIX
MAKES NO WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING WITHOUT LIMITATION THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
SHALL TEKTRONIX BE LIABLE FOR INDIRECT,
SPECIAL OR CONSEQUENTIAL DAMAGES.
Contacting Tektronix
Phone [phone]*
Address Tektronix, Inc.
Department or name (if known)
14200 SW Karl Braun Drive
P.O. Box 500 Beaverton, OR 97077 USA
Web site www.tektronix.com
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Technical
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Outside North America, contact a Tektronix sales office
or distributor; see the Tektronix web site for a list of
offices.

2
Safety Summary
To avoid potential hazards, use this product only as
specified in the TDS3000B Series Digital Phosphor
Oscilloscope User Manual which is located on the
TDS3000B Series Digital Phosphor Oscilloscope
Manuals and Application Notes CD. While using this
product, you may need to access other parts of the
system.
Read the General Safety Summary in the user manual
and in other system manuals for warnings and cautions
related to operating the system.
Preventing Electrostatic Damage
CAUTION. Electrostatic discharge (ESD) can
damage components in the oscilloscope and its
accessories. To prevent ESD, observe these
precautions when directed to do so.
UseaGroundStrap. Wear a grounded antistatic wrist strap
to discharge the static voltage from your body while
installing or removing sensitive components.
1
Contents
Safety Summary 2. . . . . . . . . . . . . . . . . . . . . . . . . . . .
TDS3000B Initial Setup 5. . . . . . . . . . . . . . . . . . . . . . .
QuickMenus 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Menus 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Acquire Menu 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
XY Cursor Menu 14. . . . . . . . . . . . . . . . . . . . . . . . . . . .
YT Cursor Menu 15. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Display Menu 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Measure Menu 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Save/Recall Menu 24. . . . . . . . . . . . . . . . . . . . . . . . . . .
Trigger Menus 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Utility Menus 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vertical Menus 38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
e*ScopeE Web-based Remote Control 41. . . . . . . . . . . .
Automatic Measurements 44. . . . . . . . . . . . . . . . . . . . .

3
Use a Safe Work Area. Do not use any devices capable of
generating or holding a static charge in the work area
where you install or remove sensitive components.
Avoid handling sensitive components in areas that have a
floor or benchtop surface capable of generating a static
charge.
Handle Components Carefully. Do not slide sensitive
components over any surface. Do not touch exposed
connector pins. Handle sensitive components as little as
possible.
Transport andStoreCarefully. Transport and store sensitive
components in a static-protected bag or container.
Manual Storage
The oscilloscope front cover has a convenient place to
store this manual.
4
More Information
Refer to the TDS3000B Series Digital Phosphor
Oscilloscope User Manual, which is located on the
TDS3000B Series Digital Phosphor Oscilloscope
Manuals and Application Notes CD, for more
information about using this product.

6
3. Connect the oscilloscope probe
to channel 1. Attach the probe
tip and reference lead to the
PROBE COMP connectors.
CH 1
PROBECOMP
4. Push the AUTOSET button.
You should see a square wave
in the display (approximately
5 V at 1 kHz).
Probe Compensation
5. Check the shape of the dis-
playedwaveform.
Overcompensated
Compensated correctly
Undercompensated
6. Adjust your probe if necessary
to achieve correct compensa-
tion.
L
5
TDS3000B Initial Setup
The following procedures describe how to quickly verify
that the oscilloscope is powering up and functioning
correctly, compensate passive probes using the built-in
compensation signal, and run the signal path compensa-
tion (SPC) routine for maximum signal accuracy.
HYou should perform all initial setup procedures the
first time you use the oscilloscope.
HYou should perform the probe compensation
procedure whenever you attach a passive probe for
the first time to any input channel.
HYou should run the signal path compensation routine
whenever the ambient temperature changes by 10_C
or more.
Functional Check
1. Connect the oscilloscope power cable
2. Turn on the oscilloscope. Wait
for the confirmation that the
oscilloscope has passed all
self-tests.
On/Standby
button

7
Signal Path Compensation (SPC)
The signal path compensation (SPC) routine optimizes
the oscilloscope signal path for maximum measurement
accuracy. You can run the routine anytime but you
should always run the routine if the ambient temperature
changes by 10_C or more.
To compensate the signal path, do the following steps:
1Disconnect all probes or cables.
2Push the UTILITY button.
3Push the System screen button to select Cal.
4Push the Signal Path screen button.
5Push OK Compensate Signal Path.
Setting the User Interface Language
To set the user interface language, do the following
steps:
1Push the UTILITY button.
2Push the System screen button to select Config.
3Push a side menu button to select a language.
8
Adjusting Time and Date
To set your oscilloscope to the current date and time, do
the following steps:
1Push the UTILITY button.
2Push the System menu button to select Config.
3Push the Set Date & Time menu button.
4Use the side menu buttons and general purpose knob
to adjust the date and time values.
5Push the OK Enter Date/Time menu button to set
the instrument date and time.
User Manual
The TDS3000B Series DPO Oscilloscope Manuals and
Application Notes CD contains the TDS3000B Series
Digital Phosphor Oscilloscope User Manual, translated
into all supported languages. The user manual contains
complete information on how to operate your
TDS3000B Series oscilloscope.
The CD also contains manuals for all TDS3000B Series
accessories, application notes, oscilloscope and probe
fundamentals, and software to install the Adobe Acrobat
Reader, which is required to view the online documents.

10
To use a QuickMenu, do these steps
1Push the QUICKMENU button on the front panel.
2Push the screen button that corresponds to the control
you need to set. Push the screen button repeatedly to
choose one of the settings. The small arrow icon
indicates that there are additional settings available
that are not shown.
You can use most of the front-panel controls at the same
time you are using a QuickMenu. For example, if you
push a channel button to select a different channel, the
QuickMenu changes to show information about that
channel.
You can still use the regular menus. For example, if you
push the MEASURE button, you can set up and take
automatic waveform measurements in the usual way. If
you return to the QuickMenu, the measurement is still
displayed on the screen.
You may have optional application modules installed
that also have QuickMenu displays. To select the Quick-
Menu you want to use, push the MENU screen button.
This menu item is shown only if application modules
that contain a QuickMenu are installed.
9
QuickMenus
The QuickMenu feature simplifies the use of the oscillo-
scope. When you push the QUICKMENU button, a set
of frequently used menu functions show on the display.
Scope is one type of QuickMenu that you can use to
control the basic oscilloscope functions. You can per-
form many tasks without using the regular menu system.

11
Menus
The following sections briefly describe each oscilloscope
menu item.
Acquire Menu
Bottom Side Description
Mode Sample Use for normal acquisition.
PeakDetect Detects glitches and reduces
the possibility of aliasing.
Envelope N Captures variations of a signal
over a period of time. (Adjust N
with the general purpose knob.)
AverageN Reduces random or uncorre-
lated noise in the signal display.
(Adjust N with the general
purposeknob.)
Horizontal
Resolution Fast Trigger
(500points) Acquires 500 point waveforms at a fast repetition rate.
Normal
(10kpoints) Acquires 10,000 point wave- forms with more horizontal
detail.
ResetHori-
zontal Delay Set to 0 s Resets the horizontal delay to zero.
12
Bottom DescriptionSide
Autoset
Normal
Autoset Executes the autoset function. (Optional application modules
may add choices to execute
specialized autoset functions.)
UndoAutoset Reverts to the settings before
the last autoset.
WaveAlert
Wfm Anomaly
Detection
On Off
Enables or disables the
WaveAlert Waveform Anomaly
Detection function. See page
13.
Sensitivity
nn.n% Sets the comparison sensitivity. Use the general purpose knob
to set sensitivity from 0% (least
sensitive) to 100% (most sensi-
tive).
Beep On
Anomaly
On Off
When On, the oscilloscope
beeps if it detects a waveform
anomaly on any active channel.
Stop On
Anomaly
On Off
When On, the oscilloscope
stops waveform acquisition if
there is a waveform anomaly on
any channel. The input wave-
forms and anomalies remain
displayed on the screen.

14
XY Cursor Menu
The following cursor menu items are available in the XY
display mode (DISPLAY > XY Display > Triggered
XY). Push the CURSOR button to show the cursor
menu.
Bottom Side Description
Function
Off Turns cursors off.
Waveform Turns waveform cursors on and
displays measurements in
rectangular format (X and Y
values). Use the front-panel
SELECT button to select a
cursor. Use the general purpose
knob to move the active cursor.
Mode
Independent Sets cursors to move indepen-
dently.
Tracking Sets cursors to move together
when the reference cursor is
selected.
NOTE. The Advanced Analysis application
module (TDS3AAM) adds more XY cursor
features, including graticule cursors and polar
readouts.
13
Bottom DescriptionSide
WaveAlert
(cont.) Hardcopy
On Anomaly
On Off
When On, the oscilloscope
sends an image of the screen to
the hard copy device or floppy
file if there is a waveform anom-
aly on any channel.
Wfms To Disk
On Anomaly
On Off
When On, the oscilloscope
saves the anomalous wave-
form(s) data to the floppy disk
drive.
Highlight
Entire Wfm Highlights the entire anomalous waveform.
Highlight
Anomaly Highlights just the anomalous data in a waveform.
WaveAlerttWaveform Anomaly Detection. WaveAlert
provides a way to detect when a waveform deviates from
a steady-state condition. WaveAlert monitors the current
waveform acquisition and compares it to the previous
waveform acquisition. If the current acquisition exceeds
the comparison tolerance, the oscilloscope considers the
current acquisition as an anomaly and responds by
stopping acquisitions, emitting a beep, saving the
anomalous waveform to a disk file, printing the screen
image to a hard copy device, or any combination of the
above. Refer to the TDS3000B Series Digital Phosphor
Oscilloscope User Manual for more information.

15
YT Cursor Menu
The following YT cursor menu items are available in the
YT display mode (DISPLAY > XY Display > Off
(YT)). Push the CURSOR button to show the cursor
menu.
Bottom Side Description
Function Off Turns cursors off.
H Bars Use to take vertical measure-
ments.
V Bars Use to take both vertical and
horizontalmeasurements.
BringSelected
Cursor to
CenterScreen
Moves the active cursor to center
screen.
Bring Both Cur-
sors On Screen Moves any off-screen cursoronto thescreen.
Mode Independent Sets cursors to move indepen-
dently.
Tracking Sets cursors to move together
when cursor 1 is selected.
16
Bottom Side Description
V Bar Units
Sec (s) /
1/sec (Hz) Sets horizontal units to se- conds or frequency (Hz).
Ratio (%) Sets V Bar measurement
units to percent.
Phase(degrees) Sets V Bar measurement
units to degrees.
Use cursor posi-
tions as %/°
Sets V Bar measurement
scale so that 0% or 0°is the
current position of left V Bar
cursor and 100% or 360°is
the current position of right V
Barcursor.
Use 5 divs as
%/°Sets V Bar measurement scale so that 5 screen major
divisions is 100% or 360°,
where 0% or 0°is –2.5 divi-
sions and 100% or 360°is
+2.5 divisions from center
graticule.