Tektronix P6339A User manual

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Instruction Manual
P6339A
500 MHz Buffered Passive Probe
071-0178-01
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.
www.tektronix.com

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.
Tektronix, Inc., P.O. Box 500, Beaverton, OR 97077
TEKTRONIX, TEK, TEKPROBE, and SureFoot are registered trademarks of
Tektronix, Inc. KlipChip is a trademark of Tektronix, Inc.
Copyright ©Tektronix, Inc. All rights reserved.

WARRANTY
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. If a
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 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 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; c) to repair any
damage or malfunction caused by the use of non-Tektronix supplies; or d) 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 IN LIEU OF ANY OTHER
WARRANTIES, EXPRESS 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.

P6339A Instruction Manual i
Table of Contents
General Safety Summary v. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Safety Summary vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contacting Tektronix ix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Getting Started 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Features and Accessories 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Optional Accessories 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Functional Check 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TekProbe Communication 5. . . . . . . . . . . . . . . . . . . . . . . . . .
DC Offset 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DC Gain and Attenuation 6. . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Basics 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Probe Compensation 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum Input Voltage 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
High-Frequency Probe Connections 8. . . . . . . . . . . . . . . . . . . . .
Specifications 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustment and Verification Procedures 15. . . . . . . . . . . . . . .
Equipment Required 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preparation 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remove the Top Cover 17. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Prepare the Equipment 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustment Locations 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Procedures 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HF Adjust 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compensate the Probe 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rise Time and Aberrations 21. . . . . . . . . . . . . . . . . . . . . . . . .
Output Zero Adjust 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DC Attenuation Accuracy 22. . . . . . . . . . . . . . . . . . . . . . . . . .
Rise Time Check 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reset DIP Switches and Install Cover 26. . . . . . . . . . . . . . . . .
Test Record 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table of Contents
ii P6339A Instruction Manual
Maintenance 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing TekProbe Interface Pins 32. . . . . . . . . . . . . . . . . . . . . .
Removing and Replacing the TekProbe Interface Collar 33. . . . .
Removing and Replacing the Cable Assembly 34. . . . . . . . . . . . .
Replaceable Parts 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table of Contents
P6339A Instruction Manual iii
List of Figures
Figure 1: SMK4 Micro KlipChip adapter 4. . . . . . . . . . . . . . .
Figure 2: Probe compensation waveforms 7. . . . . . . . . . . . . .
Figure 3: Ground lead effects 8. . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4: Voltage derating, typical 11. . . . . . . . . . . . . . . . . . . . .
Figure 5: Input impedance, typical 12. . . . . . . . . . . . . . . . . . . .
Figure 6: Input phase, typical 12. . . . . . . . . . . . . . . . . . . . . . . . .
Figure 7: Location adjustments and DIP switches 18. . . . . . . .
Figure 8: Setup for probe compensation and high frequency
adjustment 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 9: Probe compensation waveforms 20. . . . . . . . . . . . . .
Figure 10: Setup for rise time and aberrations 21. . . . . . . . . . .
Figure 11: Setup for the output offset adjustment 22. . . . . . . .
Figure 12: Setup for DC attenuation accuracy 23. . . . . . . . . . .
Figure 13: Setup for rise time check 25. . . . . . . . . . . . . . . . . . .
Figure 14: Replacing TekProbe interface pins 32. . . . . . . . . . .
Figure 15: Replacing the TekProbe collar 33. . . . . . . . . . . . . . .
Figure 16: Replacing the cable assembly 34. . . . . . . . . . . . . . . .
Figure 17: P6339A replaceable parts and standard
accessories 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table of Contents
iv P6339A Instruction Manual
List of Tables
Table 1: Features and accessories 2. . . . . . . . . . . . . . . . . . . . .
Table 2: Electrical specifications 9. . . . . . . . . . . . . . . . . . . . . .
Table 3: Environmental characteristics 11. . . . . . . . . . . . . . . .
Table 4: Physical characteristics 13. . . . . . . . . . . . . . . . . . . . . .
Table 5: Certifications and compliances 13. . . . . . . . . . . . . . . .
Table 6: Test equipment 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 7: DIP switch/attenuation settings 19. . . . . . . . . . . . . . .
Table 8: Input voltages for DC attenuation accuracy
adjustment 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 9: Settings for rise time check 26. . . . . . . . . . . . . . . . . . .

P6339A Instruction Manual v
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. Connect the probe output to the
measurement instrument before connecting the probe to the circuit
under test. Disconnect the probe input and the probe ground from the
circuit under test before disconnecting the probe from the measure-
ment instrument.
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.
The common terminal is at ground potential. Do not connect the
common terminal to elevated voltages.
Do Not Operate Without Covers. Do not operate this product with
covers or panels removed.
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.
Keep Product Surfaces Clean and Dry.

General Safety Summary
vi P6339A Instruction Manual
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:
CAUTION
Refer to Manual WARNING High Voltage Double
Insulated ProtectiveGround
(Earth) Terminal

P6339A Instruction Manual vii
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.

Service Safety Summary
viii P6339A Instruction Manual

P6339A Instruction Manual ix
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
Sales
support 1-800-833-9200, select option 1*
Service
support 1-800-833-9200, select option 2*
Technical
support Email: [email protected]
1-800-833-9200, select option 3*
1-503-627-2400
6:00 a.m. – 5:00 p.m. Pacific time
*This phone number is toll free in North America. After office
hours, please leave a voice mail message.
Outside North America, contact a Tektronix sales office or
distributor; see the Tektronix web site for a list of offices.

Contacting Tektronix
xP6339A Instruction Manual

P6339A Instruction Manual 1
Getting Started
The P6339A Buffered Passive Probe is specifically designed for
Tektronix oscilloscopes such as the TDS 794D. Each high-bandwidth
input of these oscilloscopes has a fixed 50 Wimpedance and a
TekProbe III interface. To allow a broader range of measurement
applications, the P6339A probe passively attenuates and then
actively buffers the signal to match the 50 W input impedance.
Key probe specifications include the following:
H500 MHz bandwidth
H8 pF input capacitance
H10 MWpassive input (10X)
The oscilloscope settings control the following parameters of the
buffered probe output:
HAttenuation and gain
HAC/DC coupling
HBandwidth limit
HDC offset
For a complete list of specifications, refer to page 9.
Features and Accessories
Table 1 illustrates the user features of the P6339A Buffered Passive
Probe and standard accessories. In addition to those items shown, the
standard accessories also include the following:
HAdjustment tool for probe compensation
HAccessory pouch
HInstructions (this manual)

Getting Started
2P6339A Instruction Manual
Table 1: Features and accessories
Feature/Accessory Description Applications/Notes
Marker bands Color codes the probe to the
oscilloscope input when more
than one probe is in use. Clip
one band around the strain relief
of the probe head and the
matching band on the strain
relief of the probe compensation
box.
Ridged probe cover
Ground collar
Ground lead
Short ground
lead Connects the probe ground to a ground reference close to the
signal source.
To install, slip the ground collar
onto the probe head then screw
the ridged probe cover down
over the probe tip. Insert the
socket end of the ground lead
into the hole of the ground
collar.
Retractable
hook tip Connects the probe tip to wires and component leads for hands-
free measurement.
NOTE. For a solid connection,
firmly push and twist the hook
tip onto the probe tip before
using.
SMT KlipChip
and ground
lead
Connects the probe ground to
small or hard to reach ground
reference points. The ground
lead also connects to a variety
of optional accessories.

Getting Started
P6339A Instruction Manual 3
Table 1: Features and accessories (cont.)
Feature/Accessory Applications/NotesDescription
Ground lead
with insulated
alligator clip
Connects the probe ground to
ground reference.
SureFoot
probe tip set Provides fault-free probing of SMD packages that have lead
spacings of 0.50 mm/20 mil
(red), 0.65 mm/25 mil (blue), or
50 mil (orange).
Guard
Guard Keeps fingers away from the
probe tip for protection against
electric shock.
WARNING. To avoid electric shock when using the probe, keep fingers
behind the guard on the probe body.
Ordering information for replaceable parts and standard accessories
begins on page 35.

Getting Started
4P6339A Instruction Manual
Optional Accessories
Recommended optional accessories include the SMK4 shown in
Figure 1. This adapter enables connections to very small leads.
Figure 1: SMK4 Micro KlipChip adapter
The P6339A probe is fully compatible with the entire line of 3.5 mm
(compact) accessories.
Ordering information for optional accessories begins on page 35.
Functional Check
Use the functional check procedures in this section to verify basic
probe operation with Tektronix oscilloscopes such as the TDS 794D.
Because this is a functional check, no tolerances are given for the
measured values.
NOTE. To verify warranted specifications and to adjust the probe,
qualified service personnel may use the adjustment and verification
procedures that begin on page 15.

Getting Started
P6339A Instruction Manual 5
TekProbeCommunication
This procedure verifies the operation of the TekProbe III interface.
1. Turn on the oscilloscope. Wait for the power up self test to
complete.
2. Disconnect all cables or probes from the inputs.
3. Press the Autoset button.
4. Press the CH 1 button.
5. Use the Vertical Scale knob to set the vertical scale factor to
100 mV/div.
6. Press the Vertical Menu button.
7. Attach the probe to the CH 1 input.
8. Select the Coupling menu.
9. Verify that AC and DC coupling and GND are selectable by
switching between them.
10.Verify that the channel 1 scale factor is selectable from 10mV/div
to 100V/div.
11. Verify that the Bandwidth is selectable between Full, 20MHz and
150MHz (2nd button along lower bezel).
DC Offset
This procedure verifies that the oscilloscope can compensate for the
DC offset of each volts/division range of the the P6339A probe.
1. With the probe attached to channel 1, set the oscilloscope to the
lowest volts/division setting (10 mV/div).
2. Set the input coupling to GND and set the ground reference to
center screen.
3. Install a retractable hook tip and ground lead on the probe head.
4. Short the input of the probe to probe ground by connecting a
short jumper from the hook tip to the ground lead.
5. Set the coupling to DC.