Tektronix P7225 User Manual
User Manual
P7225
2.5 GHz 10X Active Probe
071-1187-01
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 and TEK are registered trademarks of Tektronix, Inc.
TEKPROBE and SureFoot are registered trade marks and SureToe,
TekConnect, TEKPROBE, and KlipChip are trademarks of Tektronix, Inc.
WARRANTY
Tektronix warrants that the systems that it manufactures and sells, (excluding
customer-supplied equipment), will be free from defects in materials and workmanship for
a period of one (1) year. The warranty period shall begin on the date of installation or one
(1) month after the date of shipment, whichever is earlier. If any component of a system
supplied by Tektronix proves defective during the initial one-year period, Tektronix, at its
option, either will repair the defective component without charge for parts and labor, or
will provide a replacement in exchange for the defective component. If any component of
the system is a Tektronix product that is normally sold with a separate warranty, such
separate warranty will apply to the component whenever its terms are more favorable to
the Customer .
In order to obtain service under this warranty, Customer must notify Tektronix of the
defect before the expiration of the respective warranty period and make suitable
arrangements for the performance of service. Tektronix will provide such service at
Customer’s site without charge during the warranty period, if the service is performed
within the normal on-site service area. Tektronix will provide on-site service outside the
normal on-site service area only upon prior agreement and subject to payment of all travel
expenses by Customer. When or where on-site service is not available, Customer shall be
responsible for packaging and shipping the defective component to the service center
designated by Tektronix, with shipping charges prepaid. Tektronix shall pay for the return
of the component 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 components 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 system; 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
system 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 system.
THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THE
LISTED SYSTEMS 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.
Table of Contents
General Safety Summary v............................
Preface vii............................................
Related Manuals vii....................................
Contacting Tektronix viii.................................
Product Description 1.................................
TekConnect Interface 1.................................
Installation 2.........................................
Options 3............................................
Features and Accessories 5.............................
Functional Check 15...................................
Configuration 17......................................
Probe Offset 17........................................
Operating Basics 19...................................
Handling the Probe 19..................................
Maximum Nondestructive Input Voltage 19.................
Input Linear Dynamic Range 20..........................
Electrical Effects of Adapters 20..........................
Ground Lead Length 21.................................
Ground Lead Inductance 22..............................
Helpful Hints 25......................................
Low-inductance Grounding 25............................
SureFoot Grounding 26.................................
Probe Tip Test Points 27.................................
Appendix A: Specifications 29...........................
Specifications 29.......................................
Appendix B: User Service 35............................
Inspection and Cleaning 35..............................
Calibration 35.........................................
Replacement Parts 35...................................
Preparation for Shipment 36..............................
Appendix C: Replaceable Parts 37.......................
P7225 2.5 GHz 10X Active Probe User Manual
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Table of Contents
List of Figures
Figure 1: P7225 Probe featuring the TekConnect Interface 1
Figure 2: Connecting and disconnecting the probe 2.......
Figure 3: Probe functional check connections 15...........
Figure 4: Dynamic and offset limitations 18...............
Figure 5: Typical effects of using a probe tip adapter 21.....
Figure 6: Waveform distortion from ground lead length 22..
Figure 7: Ground lead equivalent circuit 23...............
Figure 8: Low-inductance grounding 25...................
Figure 9: Using a SureFoot adapter for grounding 26.......
Figure 10: Using a push-in probe tip as a test point 27.......
Figure 11: Typical input impedance and phase versus
frequency 31.......................................
Figure 12: Typical bandwidth 32.........................
Figure 13: Probe head and compensation box dimensions 33.
Figure 14: P7225 replaceable parts 39....................
Figure 15: P7225 standard accessories 40.................
Figure 16: P7225 optional accessories 42..................
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P7225 2.5 GHz 10X Active Probe User Manual
List of Tables
Table 1: P7225 features and standard accessories 5........
Table 2: P7225 optional accessories 12...................
Table 3: Warranted electrical specifications 29.............
Table 4: Typical electrical characteristics 29..............
Table 5: Physical characteristics 33......................
Table 6: Environmental characteristics 33................
Table 7: Certifications and compliances 34................
Table of Contents
P7225 2.5 GHz 10X Active Probe User Manual
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Table of Contents
iv
P7225 2.5 GHz 10X 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 disconne cting 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 information 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.
P7225 2.5 GHz 10X 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 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 produc t.
Symbols on the Product. These symbols may appear on the product:
CAUTION
Refer to Manual
vi
P7225 2.5 GHz 10X Active Probe User Manual
Preface
This is the User Manual for the P7225 probe. This manual provides
operating information, specifications, and a replaceable parts list.
Related Manuals
If you need to do a performance verificati on or make internal
adjustments to your probe, refer to the P7225 2.5 GHz Active Probe
Service Manual. The manual is a printable pdf file, and is available
on both the Tektronix website and the Optional Applications CD.
The Optional Applications CD is included with Tektronix instruments featuring the TekConnect interface.
P7225 2.5 GHz 10X Active Probe User Manual
vii
Preface
Contacting Tektronix
Phone 1-800-833-9200*
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
Service
support
Technical
support
* This phone number is toll free in North America. After office
hours, please l eave a voice mail message.
Outside North America, contact a Tektronix sales office or
distributor; see the Tektronix web site for a list of offices.
1-800-833-9200, select option 1*
1-800-833-9200, select option 2*
Email: techsupport@tektronix.com
1-800-833-9200, select option 3*
1-503-627-2400
6:00 a.m. -- 5:00 p.m. Pacific time
viii
P7225 2.5 GHz 10X Active Probe User Manual
Product Description
The Tektronix P7225 is a 2.5 GHz, 10X active probe. The P7225 has
a ≤0.8 pF input capacitance and a high input resistance (40 kΩ),to
minimize circuit loading over the specified bandwidth. The small
profile and low-mass head of the P7225 make probing dense
circuitry by hand fast and easy. The accessory tips and adapters
included enable the P7225 to be used on a wide variety of circuit
architectures.
Figure 1: P7225 Probe featuring the TekConnect Interface
TekConnect Interface
The P7225 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.
P7225 2.5 GHz 10X Active Probe User Manual
1
Product Description
When the probe is connected, the host instrument reads EE PROM
information from the probe, identifying the device and allowing the
appropriate power supplies to be powered on. The preamp inputs on
the host instrument are electrostatic discharge protected by
remaining grounded until a valid TekConnect device is detected.
Installation
The TekConnect Interface feature s a spring-loaded latch that
provides audible and tactile confirmation that a reliable connec tion
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.
To release the probe from the host instrument, grasp the compensation box, depress the latch button, and pull out the probe.
Latch
button
Figure 2: Connecting and disconnecting the probe
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P7225 2.5 GHz 10X Active Probe User Manual
Options
Product Description
The following options are available when ordering the P7225 probe:
H Option D1 — Calibration Data Report
H OptionC3—3yearsCalibrationService
H OptionD3—3yearsCalibrationDataReport
(requires Option C3)
H OptionR3—3yearsRepairService
H OptionC5—5yearsCalibrationService
H OptionD5—5yearsCalibrationDataReport
(requires Option C5)
H OptionR5—5yearsRepairService
P7225 2.5 GHz 10X Active Probe User Manual
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Product Description
4
P7225 2.5 GHz 10X Active Probe User Manual
Features and Accessories
The P7225 is provided with several features and accessories designed
to make probing and measurement a simpler task. To familiarize
yourself with these items and their uses, refer to Table 1.
WARNING. To avoid injury, use care when handling accessories with
sharp tips.
Table 1: P7225 features and standard accessories
Feature/Accessory Description
Probe head assembly. The probe head is
designed for ease of use and high performance.
Ground
socket
Probe tip
socket
Stabilization
notch
The small size makes it easy to handle in tight
areas.
The probe tip socket is sized to easily press onto
0.025 inch square pins for direct access. The
ground socket provides a short ground path for
high--fidelity ground connections.
The stabilization notch permits you to use
adjacent pins to reduce stress on the probe and
pins.
TekConnect Interface. The TekConnect
Latch
button
Interface provides a communication path between
the probe and the host instrument. Contact pins
provide power, signal, offset, and probe
characteristic data transfer.
The probe snaps into the host instrument when
fully engaged. To remove, grasp the compensation box, depress the latch button, and pull the
probe out.
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