Tektronix P6330 Manual de usuario

Instruction Manual

P6330

3.5 GHz Differential Probe

071-0757-04

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, TEK, TEKPROBE, and SureFoot are registered trademarks of

Tektronix, Inc. KlipChip is a trademark 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 charges for

products returned to any other locations.

This warranty shall not apply to any defect, failure or damage caused by improper use or

improper or inadequate maintenance and care. Tektronix shall not be obligated to furnish

service under this warranty a) to repair damage resulting from attempts by personnel other

than Tektronix representatives to install, repair or service the product; b) to repair damage

resulting from improper use or connection to incompatible equipment; c) to repair any

damage or malfunction caused by the use of non-Tektronix supplies; or d) to service a

product that has been modified or integrated with other products when the effect of such

modification or integration increases the time or difficulty of servicing the product.

THIS WARRANTY IS GIVEN BY TEKTRONIX IN LIEU OF ANY OTHER

WARRANTIES, EXPRESS OR IMPLIED. TEKTRONIX AND ITS VENDORS

DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR

FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX’ RESPONSIBILITY

TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND

EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF

THIS WARRANTY. TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE

FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL

DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR

HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.

P6330 3.5 GHz Differential Probe Instruction Manual i

Table of Contents

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

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

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

Product Features and Accessories 1.....................

Options 2............................................

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

Optional Accessories 7.................................

Operating Basics 9...................................

Installation 9.........................................

Instruments with the TEKPROBE Interface (Tektronix TDS 400,

500, 600, and 700 Series Oscilloscopes) 10...............

Instruments without the TEKPROBE Interface 10............

Input Voltage Limits 10.................................

Maximum Input Voltage 11..............................

Common-Mode Signal Range 11..........................

Differential-Mode Signal Range 11........................

Common-Mode Rejection 11.............................

Probing Techniques to Maximize CMRR 12.................

Electrical Effects of Accessories 13........................

Input Impedance and Probe Loading 14.....................

Probe Grounding 15....................................

Functional Check 17...................................

Reference 19.........................................

Problems with Single-Ended Measurements 19...............

Differential Measurements 19............................

Common-Mode Rejection Ratio 20........................

Assessing CMRR Error 20...............................

Input Impedance Effects on CMRR 21.....................

Extending the Input Leads 21.............................

Extending the Ground Lead 22............................

Extending the Probe Output 22...........................

Terminating the Probe 22................................

Effect of Extending the Output Cable 23....................

Using the Probe with Other Instruments 23..................

Table of Contents

ii P6330 3.5 GHz Differential Probe Instruction Manual

Specifications 25......................................

Warranted Characteristics 25.............................

Typical Characteristics 26...............................

Nominal Characteristics 30..............................

Theory of Operation 33................................

Probe Head and Cable Assembly 34.......................

Compensation Box 34...................................

Offset Amplifier 34.....................................

Probe Identification EEPROM 34.........................

TEKPROBE Interface 35................................

Performance Verification 37............................

Equipment Required 37.................................

Equipment Setup 38....................................

Probe Calibration Fixture 39.............................

Using the Probe Calibration Fixture 39.....................

Output Offset Voltage 41................................

DC Gain Accuracy 41...................................

Rise Time 43..........................................

Adjustments 47.......................................

Equipment Required 47.................................

Removing the Compensation Box Cover 48.................

Offset Zero and DC CMRR 50............................

Offset Range 53.......................................

Replacing the Compensation Box Cover 54.................

Maintenance 55.......................................

Replacing TEKPROBE Interface Pins 55...................

Removing and Replacing the TEKPROBE Interface Collar 56..

Inspection and Cleaning 57..............................

Replacement Parts 57...................................

Preparation for Shipment 57..............................

Replaceable Parts 59...................................

Parts Ordering Information 59............................

Using the Replaceable Parts List 60........................

Item Names 60........................................

Indentation System 60..................................

Abbreviations 60.......................................

Table of Contents

P6330 3.5 GHz Differential Probe Instruction Manual iii

List of Figures

Figure 1: P6330 differential probe 1......................

Figure 2: Input connector of TEKPROBE interface 10.........

Figure 3: Using the variable spacing adapter 12..............

Figure 4: Using the TwinFoot adapter 12....................

Figure 5: Typical effects on a signal using probe tip adapters 13.

Figure 6: Typical probe input model 14.....................

Figure 7: Probe ground input 15...........................

Figure 8: Probe functional check connections 17.............

Figure 9: Simplified model of a differential amplifier 20.......

Figure 10: Twisting the input leads 22......................

Figure 11: Typical common-mode gain 28...................

Figure 12: Typical differential input impedance vs frequency 28.

Figure 13: Probe head and compensation box dimensions 29....

Figure 14: Simplified schematic diagram 33.................

Figure 15: TEKPROBE interface 35.......................

Figure 16: Probe Calibration Fixture 39.....................

Figure 17: Probe Calibration Fixture test points 40............

Figure 18: Setup for the output offset voltage test 41..........

Figure 19: DC Gain Accuracy setup 42.....................

Figure 20: Test system rise time setup 43...................

Figure 21: Test system rise time setup with probe 44..........

Figure 22: Verifying both probe pins are contacting the

DM test points 45...................................

Figure 23: Removing the compensation box cover 48..........

Figure 24: Adjustment and test point locations 49.............

Figure 25: Offset zero and DC CMRR setup 51..............

Figure 26: P6330 offset range setup 53.....................

Figure 27: Replacing the compensation box cover 54..........

Figure 28: Replacing TEKPROBE interface pins 55...........

Figure 29: Replacing the TEKPROBE interface collar 56......

Figure 30: P6330 replaceable parts 61......................

Figure 31: P6330 standard accessories 63...................

Figure 32: P6330 optional accessories 65...................

Table of Contents

iv P6330 3.5 GHz Differential Probe Instruction Manual

P6330 3.5 GHz Differential 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 this product only as specified.

To Avoid Fire or Personal Injury

Connect and Disconnect Properly. Connect the probe output to the

measurement instrument before connecting the probe to the circuit

under test. Disconnect the probe input and the probe ground from the

circuit under test before disconnecting the probe from the measure-

ment instrument.

Observe All Terminal Ratings. To avoid fire or shock hazard, observe all

ratings and markings on the product. Consult the product manual for

further ratings information before making connections to the product.

The common terminal is at ground potential. Do not connect the

common terminal to elevated voltages.

Do Not Operate Without Covers. Do not operate this product with

covers or panels removed.

Do Not Operate With Suspected Failures. If you suspect there is damage

to this product, have it inspected by qualified service personnel.

Do Not Operate in Wet/Damp Conditions.

Do Not Operate in an Explosive Atmosphere.

Keep Product Surfaces Clean and Dry.

General Safety Summary

vi P6330 3.5 GHz Differential 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 practices that

could result in damage to this product or other property.

Terms on the Product. These terms may appear on the product:

DANGER indicates an injury hazard immediately accessible as you

read the marking.

WARNING indicates an injury hazard not immediately accessible as

you read the marking.

CAUTION indicates a hazard to property including the product.

Symbols on the Product. These symbols may appear on the product:

CAUTION

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