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

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.

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

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..................

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

iii

Table of Contents

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

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

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

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

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

Product Description

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.

P7225 2.5 GHz 10X Active Probe User Manual

Features and Accessories

Table 1: P7225 features and standard accessories (Cont.)

Feature/Accessory Description

Push-in probe tip. Use the push-in probe tip for

general purpose probing by hand.

The push-in probe tip may also be used with the

Push-in probe tip

other socketed leads and adapters.

Tektronix part number: 131-5638-11 (1 set of 10)

Installing the push-in probe tip. Attach the

Push-in

probe tip

push-in probe tip by aligning the tip into the probe tip socket and pushing the tip in until it is seated. Either end of the tip may be used.

Do not force the tip. Also, be careful not to poke yourself with the sharp probe tip. To remove the tip, gently grab the tip with small pliers, and pull the tip out.

Pogo pin

Low-inductance ground pogo pin. Use the low-inductance ground pogo pin to substantially reduce ground lead inductance. Because the pogo pin only touches the ground reference, you can easily move the probe to different points on the circuit under test.

To attach, press the pogo pin into the probe head ground socket.

To maintain signal fidelity while probing, use as short a ground path as possible. Refer to page 21 for more grounding information.

Tektronix part number: 016-1772-10 (1 set of 10)

P7225 2.5 GHz 10X Active Probe User Manual

Table 1: P7225 features and standard accessories (Cont.)

Feature/Accessory Description

Three-inch ground lead . Use the three-inch

ground lead for general probing. The socketed end of the lead may be connected to any of the probe tips and adapters or fitted onto 0.025 inch square pins.

To attach the ground lead, press and rotate the

Three--inch

ground lead

lead pin connector into the ground socket on the probe head. The lead may be removed by pulling the pin out by hand.

To maintain signal fidelity while probing, use as short a ground path as possible. Refer to page 21 for more grounding information.

Features and Accessories

Y-lead

adapter

Y-lead

adapter

Y-lead adapter. Use the Y-lead adapter to extend

the physical reach of the probe and ground when necessary. The Y-lead adapter accepts any of the probe tips or adapters, and can be pushed directly onto 0.025 inch square pins.

When selecting the grounding connection, maintain as short a ground path as possible. Refer to page 21 for more information.

Tektronix part number 196-3456-XX (1 set includes 3 three inch ground leads and 2 Y-lead adapters)

To attach the Y-lead adapter, gently press the lead pins into the probe head tip and ground receptacles. Using the black lead for ground is recommended.

P7225 2.5 GHz 10X Active Probe User Manual

Features and Accessories

Table 1: P7225 features and standard accessories (Cont.)

Feature/Accessory Description

Customizable ground lead. You can bend or

Customizable

ground lead

shorten this ground lead wire.

NOTE: To ease insertion into the ground socket of the probe, cut the tip of this ground lead wire at a 30 to 60 degree angle.

To maintain signal fidelity while probing, use as short a ground path as possible. Refer to page 21 for more grounding information.

Tektronix part number: 196--3482--XX (pkg of 5)

Adapter spring. Use the adapter spring for low-profile probing of 0.025 inch square pins.

Right angle adapter

The adapter spring allows the probe to lie at a right-angle (flat against a circuit board). This enables probing in vertical circuits, such as computer or communications backplanes, or in tight areas, such as betw een circuit cards.

The adapter can be used directly with the probe head or attached to a Y-lead adapter or ground lead.

The adapter is attached by pushing the tip into the probe tip socket until it is seated. The adapter spring can be easily removed by hand.

Tektronix part number: 016-1774-XX (pkg of 10)

P7225 2.5 GHz 10X Active Probe User Manual

Table 1: P7225 features and standard accessories (Cont.)

Feature/Accessory Description

Square pin socket. The square pin socket is

ideal for use w ith signal/ground pairs on 0.100 inch squareheader pins.

Attach the socket by gently pressing it into the ground socket on the probe head.

Square pin socket

Be sure to use the stabilization notch whenever possible to avoid slipping and damaging the probe or circuitry under test.

Tektronix part number: 016-1773-10 (pkg of 10)

SureToe probe adapter (4 ea). The SureToe adapter is a pointed probe tip useful for probing in

SureToe adapter

dense circuitry. Attach the SureToe adapters the same way as the push-in probe tips.

Features and Accessories

KlipChip

Do not force the adapter. Also, be careful not to poke yourself with the sharp probe tip. SureToe adapters can be used with any of the socketed accessory leads.

Tektronix part number: ST501 (pkg of 12)

SMT KlipChip. Use the SMT KlipChip test clips to access fragile, dense circuitry.

You can connect the KlipChip test clips to a Y-lead or three-inch ground leads. To connect, press the lead socket into the KlipChip handle.

Y-lead adapter

The KlipChip body turns freely, allowing better probe orientation. To reduce stress and provide a lower profile on components being tested, the flexible sleeve of the KlipChip bends up to a 35 degree angle.

Tektronix part number: 206-0364-XX (2 each)

P7225 2.5 GHz 10X Active Probe User Manual

Features and Accessories

Table 1: P7225 features and standard accessories (Cont.)

Feature/Accessory Description

Cable marker bands

Cable marker bands. Attach matching pairs of the marker bands onto the cable at the head and compensation box of each probe. The marker bands enable quick verification of which probe is connected to which instrument channel.

Tektronix part number: 016-1315-XX (pkg of 10)

Antistatic wrist strap. When using the probe, always work at an antistatic work station and wear the antistatic wrist strap.

Tektronix part number: 006-3415-XX

Plastic accessory box. Use the plastic box to store the probe accessories when not in use.

Tektronix part number: 006-7164-XX

Instrument case. The instrument case protects the probe from harsh environments.

Tektronix part number: 016-1879-XX

User Manual. Provides specifications and instructions for operating the probe, and a list of accessories and adapters.

Tektronix part number: 071-1187-XX

P7225 2.5 GHz 10X Active Probe User Manual

Table 1: P7225 features and standard accessories (Cont.)

Feature/Accessory Description

Accessory reorder sheet.

Use the accessory reorder sheet as a quick guide for ordering accessories for your probe. The sheet provides photos and part numbers for identifying your accessories.

Tektronix part number 001-1258-XX

Calibration certificate. A certificate of traceable calibration is provided with every instrument shipped.

Features and Accessories

P7225 2.5 GHz 10X Active Probe User Manual

Features and Accessories

Table 2 lists the optional accessories you can order for your P7225 probe.

Table 2: P7225 optional accessories

Accessory Description

SureFoot probe adapter. The SureFoot adapter

SureFoot adapter

is an integral probe tip and miniature guide that enables fault-free probing of fine-pitch SMD packages.

Attach SureFoot adapters the same way as the push-in probe tips. Three models of SureFoot adapters are available for the probe and can be used with any of the socketed accessory leads.

Orange

SureFoot

adapter

Blue

SureFoot

adapter

Red

SureFoot

adapter

SF501. The orange SureFoot adapter is compatible with 50 mil JEDEC packages, such as SOIC, PLCC, CLCC, and so on.

Tektronix part number: SF501 (pkg of 12)

SF502. The blue SureFoot adapter is compatible with 0.25 mil JEDEC and EIAJ packages.

Tektronix part number: SF502 (pkg of 12)

SF503. The red SureFoot adapter is compatible with 0.05 mm EIAJ packages.

Tektronix part number: SF503 (pkg of 12)

Micro KlipChip adapters. Use the adapters to probe the leads on integrated circuits that are surface mounted.

Tektronix part number: SMK4 (pkg of 4)

P7225 2.5 GHz 10X Active Probe User Manual

Table 2: P7225 optional accessories (Cont.)

Accessory Description

TekConnect Interface calibration fixture. The

calibration fixture is required when a performance verification or adjustment is done on the probe. It provides connectors and test points for internal probe measurements.

Tektronix part number: 067-0422-XX

SMA-to-probe tip adapter. Use the adapter to connect the probe to SMA cables and for calibration and performance verification. The adapter includes a 50-ohm SMA terminator.

Features and Accessories

Tektronix part number: 015--0678--XX

IEEE1394 Adapter. The IEEE1394 Adapter allows you to probe signals on the bus, external to system enclosures, without disturbing system operation. The adapter maintains a balanced 50-ohm signal path and can be used in both single-ended and differential modes.

Tektronix part number: 679-5027-XX

PPM100 Probe Positioner. The PPM100 is a general purpose bench top probe holder with flexible arm, designed for hands-free probing and fine positioning adjustments. The heavy duty base can be replaced with the clamp for securing the probe arm in a variety of situations. Use flexible retention rings to attach the probe to the probe holder.

Tektronix part number: PPM100

P7225 2.5 GHz 10X Active Probe User Manual

Features and Accessories

Table 2: P7225 optional accessories (Cont.)

Accessory Description

Probe Calibration and Deskew Fixture. This

fixture provides an edge source to time align (deskew) and to optimize host instrument gain and offset accuracy at the probe tip.

Tektronix part number: 067-0405-XX

Deskew Fixture. This fixture provides an edge source to time align (deskew) and to optimize host instrument gain and offset accuracy at the probe tip. The probes are held in place allowing hands-free operation without requiring a probe arm.

Tektronix part number: 067-0484-XX

Calibration software and instructions.

Use the Optional Applications Software CD that is shipped with host instruments featuring the TekConnect interface. Alternatively, you can download the software from the Tektronix website, or order the CD using the part number below.

Tektronix part number: 063-3376-XX

P7225 2.5 GHz 10X Active Probe User Manual

Functional Check

A functional check may be performed using the PROBE COMPENSATION connections on the front panel of the host instrument. SeeFigure3.

NOTE. If you are not familiar with the operation of the host instrument, please refer to the user manual for the host instrument.

Figure 3 illustrates the probe compensation connection for TDS6000 and TDS7000 instruments. Your instrument may differ from Figure 3. Please refer to your host instrument for the exact location of the probe compensation connection.

Figure 3: Probe functional check connections

1. Connect the probe to a channel on the TekConnect host

instrument.

2. Set the host instrument to display the probe channel.

P7225 2.5 GHz 10X Active Probe User Manual

Functional Check

3. Using a ground lead and SMT KlipChip, connect the probe

ground to the instrument ground on the host instrument.

4. Using a standard tip, hold the probe to the center conductor of the

PROBE COMPENSATION out put on t he host instrument.

5. Press AUTOSET, or adjust the host instrument to display a stable

calibration waveform. (You may need to adjust the probe offset to display the waveform.)

NOTE. Now is a good time to perform a probe calibration routine from your instrument. Refer to the online help of your host instrument for calibration routine procedures.

6. Disconnect the probe tip from the host instrument, and ground the

probe tip. (Connect the KlipChip to the probe tip.)

7. Set the probe offset to 0.0 V to make the host instrument display

at the ground reference.

8. Adjust the V/div to keep the waveform on the screen.

P7225 2.5 GHz 10X Active Probe User Manual

Configuration

The P7225 provides the host instrument with the probe model number, serial number, and attenuation factor. When connected to a host instrument with a TekConnect Interface, display readouts are corrected for the probe attenuation factor, the instrument input is set to 50 Ω, and the coupling is set to DC. The probe offset control is controlled by the host instrument.

Probe Offset

The probe offset is adjustable to permit operation within the linear range of the probe. Using the offset to cancel DC signal components enables optimal probe performance. See Figure 4 on page 18 for more information.

NOTE. See your host instrument manual for specific instructions on its operation and offset control.

To set the probe offset, follow these steps:

1. Ground the input of the probe.

NOTE. The probe must be terminated with low impedence (<100 Ω) to correctly display offset voltage.

2. Use the vertical position control to set a zero reference level on

the host instrument display.

3. Set the host instrument to 1 V/div.

4. Attach the probe to the circuit.

5. Adjust the probe offset to bring the trace to the host instrument

zero reference.

P7225 2.5 GHz 10X Active Probe User Manual

Configuration

6. Change the volts/division setting to the desired range, adjusting

NOTE.TheP7225 has a ±10.0 V offset range. The input voltage linear operating range is ±4 V. See Figure 4.

If cursors are used on a TekConnect Interface host instrument, the zero reference will be at the probe offset voltage.

Nonoperating range (+30 V maximum nondestructive input voltage )

+14.0 V

+10.0 V

the offset to keep the trace on the zero reference level.

+10.0 V

+4.0 V

-- 4 . 0 V

--10.0 V

--14.0 V

Nonoperating range (--30 V maximum nondestructive input voltage )

Figure 4: Dynamic and offset limitations

Maximum offset rangeMaximum AC signal amplitude

--10.0 V

P7225 2.5 GHz 10X Active Probe User Manual

Operating Basics

Please follow these operating guidelines to get optimum performance from your P7225 probe.

Handling the Probe

Exercise care when using and storing the P7225. The probe and cable are susceptible to damage caused by careless use. Always handle the probe using the compensation box and probe head, avoiding undue physical strain to the probe cable.

NOTE. To reduce the likelihood of creating signal aberrations, be careful not to dent, kink, pull or stretch the cable.

CAUTION. To prevent damage to the probe, do not drop the probe or subject it to physical shock.

Maximum Nondestructive Input Voltage

CAUTION. To avoid damage to the probe tip amplifier, do not apply voltages above the maximum non-destructive input voltage.

Refer to Specifications on page 29 for the maximum operating voltage and frequency derating informat ion.

P7225 2.5 GHz 10X Active Probe User Manual

Operating Basics

Input Linear Dynamic Range

The probe head amplifier used by the P7225 has a limited linear operating range. The usable dynamic range is ±4.0 V however, to keep the input linearity error less than ±0.1%, you must limit the apparent signal input voltage to ±3.75 V. If you use the full signal input voltage of ±4.0 V, then the input linearity error increases to ±1.0%.

Use the DC offset adjustment to maintain the probe within the dynamic range. The nominal offset adjustment range of the P7225 is ±10.0 V.

NOTE. The probe can tolerate input voltages of ±30 V wi thout damage; however, the linearity error specification does not apply to input voltages exceeding ±14.0 V (including any DC off set). See Figure 4 on page 18.

Electrical Effects of Adapters

The probe tip adapters included with your probe help connect to different types of components. While these adapters make connections easier, be aware that the adapter you choose may affect the signal that you are measuring, depending on a variety of factors, including signal frequency, source impedance, and lead length.

Use the probe without adapters to optimize step and frequency response. Using the probe tip adapters adds inductance and capacitance, which increase step response and aberrations, and leads to increased ripples in frequency response. These effects increase as the source impedance increases and measured waveform risetimes decrease.

Figure 5 on page 21 illustrates the typical effects on a given signal using some of the adapters included with your probe.

P7225 2.5 GHz 10X Active Probe User Manual

Test pulse without probe

Probe with only short ground pogo pin

3 in Ground lead on square pin

1.7 in Y lead adapter with 2 SMT KlipChips

Operating Basics

Figure 5: Typical effects of using a probe tip adapter

Ground Lead Length

When you are probing a circuit, always use as short a ground lead as possible between the probe head and circuit ground.

The series inductance added by the probe tip and ground lead can result in a resonant circuit; this circuit may cause parasitic ringing within the bandwidth of your host instrument. Refer to Figure 6.

P7225 2.5 GHz 10X Active Probe User Manual

Operating Basics

Test pulse without probe

Square pins on test board (no signal or ground length)

Probe with only short ground pogo pin

1.7 in Y lead adapter

3.0 in Ground lead with SMT KlipChip

Figure 6: Waveform distortion from ground lead length

Ground Lead Inductance

When you touch your probe tip to a circuit element, you are introducing a new resistance, capacitance, and induct ance into t he circuit. Refer to Figure 7 on page 23.

P7225 2.5 GHz 10X Active Probe User Manual

Operating Basics

source

(ground lead)

Probe C ≤0.8 pF

Figure 7: Ground lead equi valent circuit

Ringing and rise time degradation can be masked if the frequency content of the signal degradation is beyond the bandwidth of the host instrument.

You can determine if ground lead effects may be a problem in your application if you know the self-inductance (L) and capacitance (C) of your probe and ground lead. Calculate the approximate resonant frequency (f0) at which this parasitic circuit will resonate with the following formula:



2π LC

The preceding equation shows that reducing the ground lead inductance will raise the resonant freque ncy. If your measurements are affected by ringing, lower the inductance of your ground path until the resulting resonant frequency is well above the frequency of your measurements.

The low-inductance ground pogo pin described in Features and Accessories starting on page 5 can help you reduce the effects of ground lead inductance on your measurements.

P7225 2.5 GHz 10X Active Probe User Manual

Operating Basics

P7225 2.5 GHz 10X Active Probe User Manual

Helpful Hints

Follow these helpful hints to make probing easier and noise free.

Low-inductance Grounding

Placing a ground plane on top of the IC package being probed can minimize ground lead length and inductance . See Figure 8.

Figure 8: Low-inductance grounding

Attach a small piece of copper clad wire on top of the IC package and connect it to the IC package ground connection. Use the low-inductance ground pogo pin or the customizable ground lead to keep the ground lead length as short as possible.

P7225 2.5 GHz 10X Active Probe User Manual

Helpful Hints

This method is very useful when making many measurements on the same package. Using a ground plane on the IC package makes probing the IC package easier and avoids adding unnecessary ground lead length and distortion.

SureFoot Grounding

If you cannot use the recommended low-inductance grounding method, you may ground the probe to the IC package under test using a SureFoot adapter. Refer to Figure 9.

Figure 9: Using a SureFoot adapter for grounding

Use a SureFoot adapter at the end of a short ground lead to connect directly to the IC package ground. This method is preferred over using an adjacent circuit ground because it is the shortest ground path possible.

P7225 2.5 GHz 10X Active Probe User Manual

Probe Tip Test Points

You can solder the push-in probe tip or a 0.025 inch square pin to a circuit, to be used as a temporary test point. See Figure 10.

Solder the push-in probe tip onto a lead or pin with a low-power soldering iron. Press the probe head onto the push-in probe tip to make a measurement. Pull the probe head off of the push-in probe tip when you are done.

You can remove and reuse the push-in probe tip by desoldering it from the circuit, and soldering it into another circuit in the future.

Helpful Hints

Solder

Figure 10: Using a push-in probe tip as a test point

NOTE. Do not use pieces of solid-core copper wire as test points. If the wire breaks off in the probe tip socket, it may be impossible to remove the wire, and it will prevent insertion of other accessory tips.

P7225 2.5 GHz 10X Active Probe User Manual

Helpful Hints

P7225 2.5 GHz 10X Active Probe User Manual

Appendix A: Specifications

The probe and host instrument must first be allowed to warm up for 20 minutes before measurements are taken.

Specifications

CAUTION. To prevent damage to the probe or circuit under test, do not apply voltages beyond the nondestructive input voltage range to the probe.

Table 3: Warranted electrical specifications

Output Zero ±10 mV or less at output of probe

Rise Time (probe only) ≤140 ps

DC Gain Accuracy (probe only) 0.1 ±2% (excludes offset error)

Table 4: Typi cal el ectrical characteristics

Bandwidth, (probe only) 2.5 GHz (See Figure 12)

Linear Input Dynamic Range --4.0 V to +4.0 V

(Equivalent to --400 mV to +400 mV at the output of the probe.)

Delay Time 5.3 ns ±0.2 ns

Offset Range --10.0 V to +10.0 V

System Noise

300 V probe tip grounded

or less at output of probe with

rms

P7225 2.5 GHz 10X Active Probe User Manual

Appendix A: Specifications

Table 4: Typical el ectrical characteristics (Cont.)

Linearity ᐔ0.1% over a dynamic range of

--3.75 V to + 3.75 V

ᐔ1.0% over a dynamic range of

--4.0 V to + 4.0 V

Nondestructive Input Voltage Range

Input Resistance

Input Capacitance ≤0.8 pF

DC Offset Drift

DC Offset Scale Accuracy ±2% (of 10x actual probe gain)

DC Voltage Measurement Accuracy, referred to input

--30 V to +30 V (DC + peak AC)

40 kΩ (See Figure 11 for impedance vs. frequency)

150 V/°C or less at output of probe

0.75 mV/°C or less displayed on screen with TekConnect Interface

±(2% of input + (2% of offset) + 100 mV output offset + 80 mV linearity error)

P7225 2.5 GHz 10X Active Probe User Manual

45 KΩ

Appendix A: Specifications

Input Impedance

110 °

40 KΩ

35 KΩ

30 KΩ

25 KΩ

20 KΩ

Magitude (ohms)

15 KΩ

10 KΩ

5KΩ

0KΩ

100 KHz10 KHz

1 MHz 10 MHz 100 MHz 1 GHz 10 GHz

Frequency (Hz)

Figure 11: Typical input impedance and phase versus frequency

Magnitude

Phase

90 °

70 °

50 °

30 °

10 °

0 °

-- 1 0 °

-- 3 0 °

-- 5 0 °

-- 7 0 °

-- 9 0 °

-- 1 1 0 °

Phase (degrees)

P7225 2.5 GHz 10X Active Probe User Manual

Appendix A: Specifications

-- 1 7

-- 2 0

-- 2 3

Gain dB

-- 2 6

-- 2 9

Gain = 20 Log

Ꮛ

OUT

Ꮠ

-- 3 2

Figure 12: Typical bandwidth

100 MHz10 MHz 10 GHz1GHz

Frequency

P7225 2.5 GHz 10X Active Probe User Manual

7.6 mm

(0.300 in)

7.6 mm

(0.300 in)

Appendix A: Specifications

31.8 mm

(1.250 in)

57.2 mm (2.250 in)

43.8 mm

(1.725 in)

63.5 mm

(2.500 in)

91.5 mm

(3.600 in)

Figure 13: Probe head and compensation box dimensions

Table 5: Physical characteristics

Net weight 1.41 kg (3.1 lbs)

Cable length 1.3m(50in)

Table 6: Environmental characteristics

Operating temperature

Nonoperating temperature

Humidity

0 °Cto+40°C(+32_F to +104 _F)

-- 5 5 °Cto+75°C(--67_F to +167 °F)

0 to 90% RH at +30 °Cto+40°C(+86_Fto +104 _F)

Packaged product vibration and shock

The packaged product qualifies under the Distribution Cycle 1 Assurance Level II for packaged products 0 to 20 lbs. Test 2 for Warehouse and Vehicle Stacking (Compression) is omitted.

P7225 2.5 GHz 10X Active Probe User Manual

Appendix A: Specifications

Table 7: Certifications and compliances

Category Standards or description

EMC compliance This product has been reviewed to the conditions and provisions of

Directive 89/336EEC for products of the EN61326 product family and determined to be exempt from the EMC directive.

P7225 2.5 GHz 10X Active Probe User Manual

Appendix B: User Service

This section explains the maintenance for the P7225 probe.

Inspection and Cleaning

CAUTION. To prevent damage to probe materials, do not use chemicals that contain benzine, benzene, toluene, xylene, acetone, or similar solvents.

Do not immerse the probe or use abrasive cleaners.

Dirt may be removed with a soft cloth dampened with a 75% isopropyl alcohol and water solution.

Calibration

Replacement Parts

Refer to the Replaceable Parts section for a list of customer replacement parts. Due to the sophisticate d design of the P7225 probe, there are no user replaceable parts withi n the probe.

P7225 2.5 GHz 10X Active Probe User Manual

Appendix B: User Service

Preparation for Shipment

If the original packaging is unfit for use or not avai lable, use the following packaging guidelines:

1. Use a corrugated cardboard shipping carton having inside dimensions at least one inch greater than the probe dimensions. The box must have a carton test strength of at least 200 pounds (90.72 kg).

2. Put the probe into an antistatic bag or wrap to protect it from dampness.

3. Place the probe into the box and stabilize it with light packing material.

4. Seal the carton with shipping tape.

P7225 2.5 GHz 10X Active Probe User Manual

Appendix C: Replaceable Parts

This section contains a list of replaceable parts for the P7225 probe. Use this list to identify and order replacement parts.

Parts Ordering Information

Replacement parts are available from or through your local Tektronix, Inc. service center or representative.

Changes to Tektronix instruments are sometimes made to accommodate improved components as they become available and to give you the benefit of the latest circuit improvements. Therefore, when ordering parts, it is important to include the following information in your order:

H Part number

H Instrument type or model number

H Instrument serial number

H Instrument modification number, if applicable

If a part you order has been replaced with a different or improved part, your local Tektronix service center or representative will contact you concerning any change in the part number.

P7225 2.5 GHz 10X Active Probe User Manual

Appendix C: Replaceable Parts

Using the Replaceable Parts List

The tabular information in the Replaceable Parts List is arranged for quick retrieval. Understanding the structure and features of the list will help you find the information you need for ordering replacement parts.

Item Names

In the Replaceable Parts List, an Item Name is separated from the description by a colon (:). Because of space limitations, an Item Name may sometimes appear as incomplete. For further Item Name identification, U.S. Federal Cataloging Handbook H6-1 can be used where possible.

Indentation System

This parts list is indented to show the relationship between items. The following example is of the indentation system used in the Description column:

12345 Name&Description Assembly and/or Component

Attaching parts for Assembly and/or Component

(END ATTACHING PARTS)

Detail Part of Assembly and/or Component Attaching parts for Detail Part

(END ATTACHING PARTS)

Parts of Detail Part Attaching parts for Parts of Detail Part

(END ATTACHING PARTS)

Attaching parts always appear at the same indentation as the item it mounts, while the detail parts are indented to the right. Indented items are part of, and included with, the next higher indentation. Attaching parts must be purchased separately, unless otherwise specified.

Abbreviations

Abbreviations conform to American National Standards Institute (ANSI) standard Y1.1

P7225 2.5 GHz 10X Active Probe User Manual

Appendix C: Replaceable Parts

Mfr. part no.

Mfr.

code

12345 name & descriptio n

Qty

Serial no.

Effective Dscont

part no.

Tektronix

Figure 14: P7225 replaceable parts

010--0694--XX 1 PROBE, FET ACT:2.5 GHZ,10X, ≤0.8 PF,TDS SERIES 80009 010--0694--XX

P7225 2.5 GHz 10X Active Probe User Manual

Fig. &

index no.

--2 016-1879-XX 1 CASE,STORAGE:PLASTIC,W/FOAM TK6108 016–1879–XX

14--1

Appendix C: Replaceable Parts

1 2

7 8 9

Figure 15: P7225 standard accessories

P7225 2.5 GHz 10X Active Probe User Manual40

Appendix C: Replaceable Parts

Mfr. part no.

Mfr.

code

060D9 ---- ---- ---- ---- -- --

TK0623 3M TYPE 2064

STANDARD ACCESSORIES

12345 name & descriptio n

Qty

Serial no.

Effective Dscont

part no.

Tektronix

--2 196-3482-XX 1 CUSTOMIZABLE GROUND LEAD SET, SET OF 5 060D9 87139000

--3 131-5638-11 1 PROBE,TIP:PACKAGE OF 10 80009 131-5638-11

--4 016-1772-10 1 ACCESSORY KIT:POGO PIN,PKG OF 10 060D9 016-1772-10

--5 016-1773-10 1 ACCESSORY KIT:GND PIN LENGTH ADAPTER,PKG OF 10 060D9 016-1773-10

Fig. &

index no.

15--1 196-3456-XX 1 LEAD SET; ACCESSORY KIT 060D9 196-3456-XX

--6 016-1774-XX 1 ACCESSORY KIT:ADAPTER SPRING,PKG OF 10 060D9 016-1774-XX

--7 ---- ---- ---- ---- -- -- 1 PROBE,TIP,SU RETOE:PACKAGE OF 4 (R EORDER ST501,

PKG OF 12)

--8 016-1315-XX 1 MARKER KIT,ID:CABLE MARKER BAND,2 EA, VAR COLRS 7X318 1134

--9 206-0364-XX 2 TIP,PROBE:MICROCKT TEST,SMT KLIP CHIP 80009 206-0364-XX

P7225 2.5 GHz 10X Active Probe User Manual

--10 006-7164-XX 1 BOX,PLASTIC:4.625 X 2.875 X 1.0 53718 K226

--11 006-3415-XX 1 STRAP,WRIST:3M TYPE 2214, ADJUSTABLE,6 FT COILED

CORD

--12 071-1187-XX 1 MANUAL,TECH:USER, P7225 TK2548 071-1187-XX

Appendix C: Replaceable Parts

Figure 16: P7225 optional accessories

P7225 2.5 GHz 10X Active Probe User Manual42

Appendix C: Replaceable Parts

Mfr. part no.

Mfr.

code

64537 JA--121S

TK2548 063-- 3376--XX

OPTIONAL ACCESSORIES

12345 name & descriptio n

Qty

Serial no.

Effective Dscont

part no.

Tektronix

--2 SF502 1 ADPTR,SUREFOOT:25 MIL JEDEC,PKG OF 12 060D9 SF502

--3 SF503 1 ADPTR,SUREFOOT:0.5 MM EIAJ,PKG OF 12 060D9 SF503

--4 SMK4 1 TIP,PROBE:MICROCKT TEST,PKG OF 4 0HHL8 SMK4

Fig. &

index no.

16--1 SF501 1 ADPTR,SUREFOOT:50 MIL JEDEC,PKG OF 12 060D9 SF501

--5 067-0422-XX 1 CALIBRATION FIXTURE ASSY:ECB TO TOP,P7000 SERIES 80009 067--0422--XX

-- 6 015--0678-XX 1 ADAPTER, PROBE:TIP,SMA 2 CO MPACT

SIZE,TERMINATED INTO 50 OHM TEST FIXTURE

--7 679-5027-XX 1 CKT BD SUBASSY:1394 ADAPTER 80009 679--5027--XX

SOFTWARE,CD-- ROM,TDS7000 SERIES

--8 063-3376-XX 1 SOFTWARE PKG:OPTIONAL APPLICATIONS

P7225 2.5 GHz 10X Active Probe User Manual

Appendix C: Replaceable Parts

BEAVERTON OR 97077-- 0001

PO BOX 500

VANCOUVER, WA 98661

COLUMBIA HOUSE BLVD~#120

CROSS INDEX - MFR. CODE NUMBER TO MANUFACTURER

TEKTRONIX INC 14150 SW KARL BRAUN DR

Mfr. code Manufacturer Address City, State, Zip code

80009

060D9 TENSOLITE COMPANY PRECISION HARNESS AND ASSEMBLY~3000

0HHL8 EMULATION TECHNOLOGY INC 2344 WALSH AVE, BLDG F SANTA CLARA, CA 95051

53718 FLAMBEAU AIRMOLD CORP 100 GRACE DRIVE~PO BOX 610 ROANOKE RAPIDS, NC 27870

7X318 KASO PLASTICS INC 5720--C NE 121ST AVE, STE 110 VANCOUVER, WA 98682

TK0623 GENERAL TOOL & SUPPLY CO 2705 NW NICOLAI ST PORTLAND, OR 97210

TK2548 XEROX CORPORATION 14181 SW MILLIKAN WAY BEAVERTON, OR 97005

TK2565 VISION PLASTICS INC 26000 SW PARKWAY CENTER DRIVE WILSONVILLE, OR 97070

TK6108 KENT H LANDSBERG CO 27929 SW 95TH, SUITE 101 WILSONVILLE, OR 97070

P7225 2.5 GHz 10X Active Probe User Manual44

Tektronix P7225 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

WARRANTY

Table of Contents

List of Figures

List of Tables

General Safety Summary

Preface

Related Manuals

Contacting Tektronix

Product Description

TekConnect Interface

Installation

Options

Features and Accessories

Functional Check

Configuration

Probe Offset

Operating Basics

Handling the Probe

Maximum Nondestructive Input Voltage

Input Linear Dynamic Range

Electrical Effects of Adapters

Ground Lead Length

Helpful Hints

Low-inductance Grounding

SureFoot Grounding

Probe Tip Test Points

Appendix A: Specifications

Specifications

Appendix B: User Service

Inspection and Cleaning

Calibration

Replacement Parts

Preparation for Shipment

Appendix C: Replaceable Parts

Parts Ordering Information

Using the Replaceable Parts List