Tektronix P7260 User Manual
xx
P7260
6 GHz 5X/25X Active Probe
User Manual
*P071092203*
071-0922-03
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P7260
6 GHz 5X/25X Active Prob
User Manual
e
www.tektronix.com
071-0922-03
Copyright © Tektronix, Inc. All righ
Tektronix products are covered by U.S. and foreign patents, issued and pending.
Information in this publi catio
material. Specifications and price change privileges reserved.
ts reserved.
n supersedes that in all previously published
Tektronix, Inc., P.O. Box 500,
TEKTRONIX
, TEK, and TekConnect are registered trademarks of Tektronix, Inc.
Beaverton, OR 97077
Contacting Tektronix
Tektronix, Inc.
14200 SW Karl Braun Drive
P.O. Box 500
Beaverton, OR 97077
USA
For product information, sales, service, and technical support:
In North Am erica, call 1-800-833-9200.
Worldwide, visit www.tektronix.com to find contacts in your area.
Warra nty
Tektronix warrants that this produ
workmanship for a period of one (1) year from the date of shipment. If any such product
proves defective during this w
the defective product without charge for parts and labor, or will provide a replacement
in exchange for the defective
Tektronix for warranty work may be new or reconditioned to like new performance. All
replaced parts, modules and
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 WITH RESPECT TO THE
PRODUCT I
TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF
MERCHAN
RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE
SOLE AN
BREACH OF THIS WARRANTY. TEKTRONIX AND ITS VENDORS WILL NOT BE
LIABL
DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS
ADV
[W2 – 15AUG04]
N LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED.
TABILITY OR FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX’
D EXCLUSIV E REMEDY PROVIDED TO THE CUSTOMER FOR
E FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
ANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.
ct will be free from defects in materials and
arranty period, Tektronix, at its option, either will repair
product. Parts, modules and replacement products used by
products become the property of Tektronix.
Table of Contents
General Safety Summary v..............................
Preface vii............................................
Related Manuals vii....................................
Manual Structure vii....................................
Manual Conventions viii.................................
Product Description 1.................................
Options 2............................................
TekConnect Interface 2.................................
Installation 3.........................................
Firmware Requirements 3..............................
Probe Installation 3....................................
LED Flashes 4........................................
Changing Probe Attenuation 5.........................
Cleaning 6...........................................
Features and Accessories 7.............................
Host Instrument-to-Probe Calibration 19.................
Functional Check 21...................................
Configuration 23......................................
Probe Offset 23........................................
Operating Basics 25...................................
Handling the Probe 25..................................
Maximum Nondestructive Input Voltage 25.................
Input Linear Dynamic Range 26..........................
Electrical Effects of Ground Lead Length 26................
Ground Lead Inductance 27..............................
Electrical Effects of Adapters 29..........................
Troubleshooting 31....................................
Nontypical LED Flash Pattern When You Install the Probe 31...
Nontypical LED Response When You Press
the SELECT Button 32...............................
P7260 6 GHz 5X/25X Active Probe User Manual
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Table of Contents
Specifications 33......................................
Warranted Characteristics 33.............................
Typical Characteristics 34...............................
Replaceable Parts 41...................................
Parts Ordering Information 41............................
Using the Replaceable Parts List 42........................
Item Names 42........................................
Indentation System 42..................................
Abbreviations 42.......................................
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P7260 6 GHz 5X/25X Active Probe User Manual
List of Figures
Figure 1: P7260 Probe featuring the TekConnect interface 1
Figure 2: Connecting and disconnecting the probe 4.......
Figure 3: Probe functional check connections 20...........
Figure 4: Dynamic and offset limitations 24...............
Figure 5: Waveform distorti on from ground lead length 27..
Figure 6: Ground lead equivalent circuit 28...............
Figure 7: Typical effects of using the probe tip adapters 29...
Figure 8: Typical input impedance and phase versus
frequency 35.......................................
Figure 9: Typical bandwidth at 5X attenuation 36..........
Figure 10: Typical bandwidth at 25X attenuation 37........
Figure 11: Probe head and compensation box dimensions 38.
Figure 12: P7260 replaceable parts 43....................
Figure 13: P7260 standard accessories 44.................
Figure 14: P7260 optional accessories 46..................
Table of Contents
P7260 6 GHz 5X/25X Active Probe User Manual
iii
Table of Contents
List of Tables
Table 1: P7260 features and standard accessories 7........
Table 2: P7260 optional accessories 16...................
Table 3: Nontypical LED flash patterns 31...............
Table 4: End states following nontypical LED flash
patterns 32........................................
Table 5: Warranted electrical specifications 33............
Table 6: Typical electrical characteristics 34..............
Table 7: Typical mechanical characteristics 39............
Table 8: Environmental characteristics 39................
Table 9: Certifications and compliances 40................
iv
P7260 6 GHz 5X/25X Active Probe 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. 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 measurement 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 informati on before making connections to the product.
Connect the ground lead of the probe to earth ground only.
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.
P7260 6 GHz 5X/25X Active Probe User Manual
v
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 practi ces 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
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P7260 6 GHz 5X/25X Active Probe User Manual
Preface
This is the instruction manual for the P7260 6 GHz 5X/25X Active
Probe. Read this preface to learn how this manual is structured and
what conventions it uses. Before using this manual or the P7260
probe, read the General Safety Summary section at the beginning of
this manual for safety and other important background information.
Related Manuals
If you need to do a performance verification for your probe refer to
the P7260 6 GHz 5X/25X Active Probe Service Manual. The manual
is available as a printable .pdf file on the Application Software CD
(Tektronix part number 063-3376-XX) that accompanies your host
instrument, or on the Tektronix website.
Manual Structure
This manual is divided into sections that contain related section
topics:
H Product Description includes a product de scription, and
instructions for installat ion and changing probe attenuation.
H Features and Accessories introduces the standard and optional
accessories for the probe.
H Operating Basics includes information about handling the probe,
dynamic range, and grounding.
H Specifications includes warranted electrical specifications,
Typical electrical characteristics, and graphs for typical input
impedance and typical bandwidth.
Be sure to read the introductory text for each procedure. These
introductions provide import ant information needed to use the P7260
correctly, safely, and efficiently.
P7260 6 GHz 5X/25X Active Probe User Manual
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Preface
Manual Conventions
This manual uses certain conventions that you should become
familiar with before using the P7260 probe.
Safety
Symbols and terms related to safety appear in the General Safety
Summary found at the beginning of this manual.
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P7260 6 GHz 5X/25X Active Probe User Manual
Product Description
The Tektronix P7260 is a 6 GHz active probe. It has a low input
capacitance (<0.5 pF) and high input resistance (20 kΩ at DC),
which minimize circuit loading over a wide bandwidth range.
The P7260 probe features selectable attenuation to maximize
dynamic range and sensitivity. The 5X setting provides 1.5 V
dynamic range and <75 ps risetime, and the 25X setting provides
6V
dynamic range and <85 ps risetime.
p--p
Designed for use with the TDS6604 TekConnect host instrument, the
P7260 system bandwidth is typically 6 GHz at the probe tip. The
TekConnect interface extends useful bandwidth and signal fidelity to
18 GHz.
p--p
Figure 1: P7260 Probe featuring the TekConnect interface
P7260 6 GHz 5X/25X Active Probe User Manual
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Product Description
The small profile and low-mass head of the P7260 make probing
dense circuitry by hand fast and easy. Complimentary accessory tips
and adapters help you connect with a wide variety of circuit
architectures. For hands-free probing, the square-pin adapter
(standard accessory), and the PPM100, a multi
(optional accessory) are provided. For details, refer to the Features
and Accessories section of this manual.
Options
The following options are available when ordering the P7260 probe:
H D1 Calibration data report
H C3 Additional 2 years of calibration
H D3 Calibration data report for Option C3
H R3 Additional 2 years of repair
H C5 Additional 4 years of calibration
H D5 Calibration data report for Option C5
-axis probe positioner
H R5 Additional 4 years of repair
TekConnect Interface
The P7260 is powered through a TekConnect interface between the
probe compensation box and the host instrument. The TekConnect
interface provides a communication path through contact pins on the
host instrument. Power, signal, offset, and probe characteristic data
transfer through the interface.
When the probe is connected, the host instrument reads configuration
information from the probe, allowing the host i nstrument to
optimally configure the internal signal path. To protect the preamp
inputs on the host instrument from electrostatic discharge, the inputs
remain grounded until a valid TekConnect device is detected.
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P7260 6 GHz 5X/25X Active Probe User Manual
Installation
The P7260 connects directly to the TekConnect interface on the
TekConnect host instrument.
Firmware Requirements
To ensure compatibility of your TekConnect host instrument with the
probe, your TDS7000, or CSA7000 series host instrument must have
the firmware upgrade V2.1.0 or higher.
Firmware upgrade instructions are available on the Tektronix website
at www.tektronix.com. Select the Software & Drivers linkonthe
home page of the website. The Tektronix website provides up-t o-date
software and firmware upgrades for your P7260 and host instrument.
Probe Installation
The TekConnect interface features a spring-loaded latch that
provides audible and tactile confirmation that a reliable connection
has been made to the host instrument. Slide the probe into the
TekConnect receptacle on the host instrument. The probe snaps into
the host instrument when fully engaged. See Figure 2 on page 4.
Product Description
To release the probe from the host instrument, grasp the compensation box, depress the latch button, and pull out the probe.
P7260 6 GHz 5X/25X Active Probe User Manual
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Product Description
SELECT
button
Figure 2: Connecting and disconnecting the probe
LED Flashes
Two green LEDs, labeled 5X and 25X, are visible on the top of the
P7260 compensation box. See Figure 2, above. When you connect
the probe to a channel on the host instrument, the LEDs immediately
show the following information:
H The results of diagnostic tests performed on internal circuitry of
the probe. The tests include signals to the host instrument and a
host response.
LEDs
25X
5X
Latch
button
H The attenuation setting of the probe. Initially, the host instrument
sets the attenuation of the probe to 25X.
Reading LED diagnostic flashes
In normal operation when you connect the probe, both LEDs flash
once, simultaneously. This flash indicates that the P7260 has
completed internal diagnostics and is initiating communication with
the host. Next, the 25X attenuation LED lights and remains lit,
indicating that the host has recognized the P7260, configured interna l
signal paths accordingly, and set the default attenuation to 25X.
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P7260 6 GHz 5X/25X Active Probe User Manual
NOTE. If you see a different set of flashes than described on page 4,
the internal circuitry of the P7260 has failed in some way. To avoid
inaccurate probing, do not use the probe before referring to page 32
of the Troubleshooting section.
Changing Probe Attenuation
Upon installation, the default attenuation of the P7260 is set to 25X.
To manually change attenuation, use the SELECT button located
below the LED lights on t he top of the compensation box. To switch
to 5X attenuation, grasp the compensation box a nd depress the
SELECT button. The 25X LED extinguishes and the 5X LED lights.
To return to 25X attenuation, depress the SELECT button again.
You can also change attenuation settings using GPIB commands
available on your host instrument. Refer to the GPIB Programmer
Online Help software provided with your host instrument.
Product Description
NOTE. After connecti ng the P7260 to the host instrument, allow the
probe to warm up for at least twenty minutes before probing.
P7260 6 GHz 5X/25X Active Probe User Manual
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