Tektronix P6249 User manual

Instruction Manual

P6249

4 GHz 5X Active Probe

071-0538-05

www.tektronix.com

Tektronix products are covered by U.S. and foreign patents, issued a nd

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.

TEKTRONIX, TEK, TEKPROBE, and SureFoot are registered trademarks,

and SureToe, FlexLead, and KlipChip are trademarks of Tektronix, Inc.

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 char ges 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 dif ficulty 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.

P6249 4 GHz 5X Active Probe Instruction Manual

i

Table of Contents

General Safety Summary v..............................

Service Safety Summary vii..............................

Contacting Tektronix viii.................................

Product Description

Options 1............................................

Standard Accessories 1.................................

Optional Accessories 2.................................

Features and Accessories

Features and Standard Accessories 3......................

Optional Accessories 8.................................

Configuration

Probe Offset 9........................................

Functional Check

Deskew Fixture 13.....................................

Probe Calibration Errors 14..............................

Check Compatibility 14.................................

Check for Hardware Problems 15.........................

Operating Basics

Handling the Probe 17..................................

Maximum Non-destructive Input Voltage 17.................

Input Linear Dynamic Range 17..........................

Ground Lead Length 18.................................

Helpful Hints

Low-Inductance Grounding 19............................

SureFoot Grounding 20.................................

Probe Tip Test Points 21.................................

Table of Contents

ii

P6249 4 GHz 5X Active Probe Instruction Manual

Specifications

Theory of Operation

Probe Head and Cable Assembly 30.......................

Compensation Box 30...................................

Offset Amplifier 30.....................................

Probe Identification EEPROM 30.........................

TEKPROBE Interface 31................................

VCC, +7 V Regulator 31................................

Performance Verification

Equipment Required 33.................................

Equipment Setup 34....................................

Output Zero 35........................................

DC Attenuation Accuracy 36.............................

Rise Time 38..........................................

Adjustments

Adjustment Locations 43................................

Offset Zero 44.........................................

Offset Range 45.......................................

Maintenance

Replacing TEKPROBE Interface Pins 47...................

Removing and Replacing the Compensation Box Covers 48....

Removing and Replacing the TEKPROBE Interface Collar 50..

Inspection and Cleaning 51..............................

Replacement Parts 51...................................

Preparation for Shipment 51..............................

Troubleshooting

Replaceable Parts

Parts Ordering Information 57............................

Using the Replaceable Parts List 58........................

Table of Contents

P6249 4 GHz 5X Active Probe Instruction Manual

iii

List of Figures

Figure 1: Dynamic and offset limitations 10.................

Figure 2: Probe functional check connections 11.............

Figure 3: Deskew fixture connections

(two P6249 probes shown) 13............................

Figure 4: Low-inductance grounding 19....................

Figure 5: Using a SureFoot adapter for grounding 20..........

Figure 6: Using a probe tip as a test point 21.................

Figure 7: Typical input impedance and phase versus frequency 24

Figure 8: Typical bandwidth 25...........................

Figure 9: P6249 simplified schematic diagram 29.............

Figure 10: TEKPROBE interface 31.......................

Figure 11: Setup for output zero and DC attenuation accuracy 35

Figure 12: Test system rise time setup 38...................

Figure 13: Test system and probe rise time setup 39...........

Figure 14: P6249 adjustment locations 43...................

Figure 15: 1103 power supply offset voltage location 45.......

Figure 16: P6249 offset range setup 46.....................

Figure 17: Replacing TEKPROBE interface pins 47...........

Figure 18: Removing the compensation box covers 48.........

Figure 19: Replacing the compensation box cover 49..........

Figure 20: Replacing the TEKPROBE interface collar 50......

Figure 21: Compensation box test point locations 54..........

Figure 22: P6249 replaceable parts 59......................

Figure 23: P6249 standard accessories 60...................

Figure 24: P6249 optional accessories 62...................

Table of Contents

iv

P6249 4 GHz 5X Active Probe 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 t his product onl y as spec ified.

Only qualified personnel should perform servic e 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.

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.

General Safety Summary

vi

P6249 4 GHz 5X Active Probe 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 pract ices 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

P6249 4 GHz 5X Active Probe 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.

Service Safety Summary

viii

P6249 4 GHz 5X Active Probe Instruction Manual

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

1-800-833-9200, select option 1*

Service

support

1-800-833-9200, select option 2*

Technical

support

Email: techsupport@te ktronix.com

1-800-833-9200, select option 3*

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.

P6249 4 GHz 5X Active Probe Instruction Manual

1

Product Description

The Tektronix P6249 is a 4 GHz (probe only), 5X ac tive FET probe

with 1 pF input capacitance. The P6249 has a low input capacitance

and high input resistance which minimize circuit loading over a wide

bandwidth range. The small profile and low-mass head of the P6249

make probing crowded circuits by hand fast and easy. The accessory

tips and adapters included with the probe enable the P6249 to be

used on a wide variety of circuit architectures.

The P6249 is powered through a TEKPROBE interface between the

probe compensation box and the oscilloscope. The P6249 can be

used with non-TEKPROBE oscilloscopes and instruments by using

the optional Tektronix 1103 Probe Power Supply.

Options

The following options are available when ordering the P6249 probe:

H Option D1 -- Calibration Data

H Option C3 -- 3 years Calibration Service

H Option D3 -- 3 years Calibration Data

H Option R3 -- 3 years Extended Warranty

Standard Accessories

The P6249 is shipped with the following standard accessories:

H Standard probe tips

H SureToe adapter probe tips

H SMT KlipChip microcircuit test leads

H Y-lead adapter

H Right-angle adapter

Product Description

2

P6249 4 GHz 5X Active Probe Instruction Manual

H Three-inch ground lead

H Customizable ground lead

H Low-inductance ground pogo pin

H Color marker bands

H .100” square pin adapter

H Instruction manual

Optional Accessories

The following accessories are available for the P6249 probe:

H SureFoot adapter probe tips

H SMK4 Micro KlipChip adapters

H Deskew fixture

H Probe tip-to-SMA adapter

H 1103 Probe Power Supply

H Compensation box release tool

H Insulated adjustment tool

Refer to Features and Accessories on page 3 for more informa tion on

using the probe and accessories.

For part number information for standard and optional accessories,

refer to Replaceable Parts on page 57.

P6249 4 GHz 5X Active Probe Instruction Manual

3

Features an d Accessories

The P6249 is provided with several features and accessories designed

to make probing and measurement a simpler task. Please familiarize

yourself with these items and their uses.

Features and Standard Accessories

Table 1 shows the features and standard accessories of the probe.

Table 1: Features and standard accessories

Feature/Accessory Description

Probe tip

socket

Ground

socket

Stabilization

notch

Probe head assembly. The probe head is

designed for ease of use and high performance.

Its small size makes it easy to handle in tight

areas.

The probe tip socket is sized to easily press onto

0.025 inch 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 stresses on the probe

and pins.

TEKPROBE Interface. The TEKPROBE

interface provides a communication path betw een

the probe and the oscilloscope. Contact pins

provide power, signal, offset, and probe

characteristic data transfer. See page 31 for more

information.

If your oscilloscope does not support the

TEKPROBE interface, you can use the optional

1103 probe power supply as an effective

interface. Contact your local Tektronix representa-

tive for more information.

Features and Accessories

4

P6249 4 GHz 5X Active Probe Instruction Manual

Table 1: Features and standard accessories (Cont.)

Feature/Accessory Description

Push-in probe tip

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

for general purpose probing by hand. The tip may

also be used as a temporary test point. See

page 21 for more information.

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

other socketed leads and adapters.

Installing the push-in probe tip. Attach the

push-in probe tip by seating 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.

SureToe probe tip. The SureToe tip is a pointed

probe tip useful for probing in dense circuitry.

Attach the SureToe adapters the same way as

the push-in probe tips. D o not force the tip.Also,

be careful not to poke yourself with the sharp

probe tip. They can be used with any of the

socketed accessory leads.

Three-inch ground l ead. 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

pins.

To attach the ground lead, press and rotate the

lead pin connector into the ground socket on the

probe head. The lead may be removed by simply

pulling the pin out by hand.

When selecting the grounding connection,

maintain as short a ground path as possible.

Refer to page 18 for more information.

Features and Accessories

P6249 4 GHz 5X Active Probe Instruction Manual

5

Table 1: Features and standard accessories (Cont.)

Feature/Accessory Description

Customizable

ground lead

Customizable ground lead. This ground lead

wire can be bent or cut shorter.

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 18

for more grounding information.

Pogo pin

Low-inductance ground pogo pin. Use the

low-inductance ground pogo pin to substantially

reduce ground lead inductance. Because the

pogo pin simply 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.

When selecting the grounding connection,

maintain as short a ground path as possible.

Refer to page 18 for more information.

Signal ground

adapter

Signal-Ground Adapter. The signal-ground

adapter is ideal for use with signal/ground pairs

on 0.100 inch header pins (such as FlexLead

adapters).

Attach the signal-ground adapter by gently

pressing it into the ground socket on the probe

head.

Be sure to use the stabilization notch whenever

possible, to avoid slipping and damaging the

probe or circuitry under test.

Features and Accessories

6

P6249 4 GHz 5X Active Probe Instruction Manual

Table 1: Features and standard accessories (Cont.)

Feature/Accessory Description

Right

angle

adapter

Right-angle adapter. Use the right-angle

adapter for low-profile probing of 0.025 inch

diameter square pins.

The right-angle adapter allows the probe to lie flat

against a circuit board. This enables probing in

vertical circuits such as computer or communica-

tions backplanes, or in tight areas such as

between circuit cards.

The right-angle adapter can be used directly with

the probe head, or attached to the Y-lead adapter

or ground leads.

The right-angle adapter is attached the same way

as the push-in probe tip, and can be easily

removed by hand.

KlipChip

Y-lead adapter

SMT KlipChip. Use the SMT KlipChip test clips

to access fragile, dense circuitry.

KlipChip test clips can be connected to the Y-lead

or three-inch ground leads. Simply press the lead

socket into the KlipChip handle.

The KlipChip body freely turns, 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.

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 pins.

When selecting the grounding connection,

maintain as short a ground path as possible.

Refer to page 18 for more information.

Features and Accessories

P6249 4 GHz 5X Active Probe Instruction Manual

7

Table 1: Features and standard accessories (Cont.)

Feature/Accessory Description

Y-lead

adapter

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.

Color marker

bands

Color marker bands. Attach matching pairs of

the color marker bands onto the cable at the head

and compensation box of each probe. The marker

bands enable quick verification of w hich probe is

connected to which instrument channel.

Features and Accessories

8

P6249 4 GHz 5X Active Probe Instruction Manual

Optional Accessories

Table 2 shows the optional accessories that are available for your

probe.

Table 2: Optional accessories

Accessory Description

SureFoot probe tip. The SureFoot tip 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. They can be used

with any of the socketed accessory leads.

The orange, 0.050 inch SureFoot tip is compatible

with 50 mil JEDEC packages such as SOIC,

PLCC, CLCC, etc.

The blue, 0.025 inch SureFoot tip is compatible

with 0.65 mm JEDEC and EIAJ packages.

The red, 0.5 mm SureFoot tip is compatible with

EIAJ packages.

SMK4 Micro KlipChip adapters. Use the

adapters to probe the leads on integrated circuits

that are surface-mounted.

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Tektronix P6249 User manual

Tektronix P6249 User manual

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