Tektronix P7380SMA Bedienungsanleitung

Instruction Manual

P7380SMA

8 GHz Differential Probe

071-1392-01

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, TEK, and TekConnect are registered 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 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.

P7380SMA 8 GHz Differential Probe Instruction Manual i

Table of Contents

Preface vii............................................

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

General Safety Summary ix..............................

Service Safety Summary xi..............................

Getting Started 1.....................................

Probe Controls and Connections 2........................

Standard Accessories 6.................................

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

Options 10............................................

TekConnect Interface 11.................................

Probe Inputs 12........................................

SMA Connectors 12.................................

DC Termination Voltage Control Jacks 13................

Probe Input Limitations 13............................

Probe Outputs 14......................................

Termination Voltage Monitor Jacks 14...................

Auxiliary Output SMA Connector 14....................

Functional Check 15....................................

Power-on Self Test 16................................

Signal and Termination Voltage Monitor Check 17.........

Aux Output Check 20................................

DC Termination Voltage Zero Check 22.................

Probe Calibration 24....................................

Using the Probe 26.....................................

Auto Mode 26......................................

External Mode 27...................................

Internal Mode 28....................................

Auxiliary Output 29.................................

Using the Probe With a Sampling Oscilloscope 30.........

P6150 Probe Tips 32.................................

Operating Basics 33...................................

Differential Measurements for Serial Data Compliance Testing 33

Differential Signalling 33.............................

Pseudo-Differential Measurements 34...................

Differential Probe Measurements 35....................

Common-Mode Rejection Ratio 36.....................

Table of Contents

ii P7380SMA 8 GHz Differential Probe Instruction Manual

Probe Block Diagram (Simplified) 37......................

Matched-Delay Cables 37.............................

Input Termination Network 38.........................

Internal Probe Amplifier 40...........................

Termination Voltage Control 44...........................

Auto Mode 45......................................

Int Mode 45........................................

Ext Mode 45.......................................

Overdrive Error 47.....................................

Differential and Single-Ended Signal Measurement 48.........

Differential Measurement Topology 48..................

Differential Dynamic Range 49........................

Single-Ended Measurement Topology 50.................

Single-Ended Measurement Procedure 54................

Single-Ended Dynamic Range 55.......................

Extending the Input Connections 56.......................

Checking Cable Skew 57................................

Adjusting Cable Skew 58................................

Deskewing Probes 60...................................

Reference 63.........................................

Serial Bus Standards 63.................................

InfiniBand 64.........................................

Table of Contents

P7380SMA 8 GHz Differential Probe Instruction Manual iii

Appendix A: Specifications 65...........................

Warranted Characteristics 65.............................

Typical Characteristics 66...............................

Nominal Characteristics 71..............................

Mechanical Characteristics 71............................

Appendix B: Performance Verification 73.................

Equipment Required 73.................................

Special Adapters Required 75............................

TekConnect-to-SMA Adapter 75.......................

Equipment Setup 76....................................

Input Resistance 77.....................................

Termination Voltage Accuracy 78.........................

Ext Mode 78.......................................

Int Mode 79........................................

Auto Mode 80......................................

Output Offset Zero 82...................................

DC Gain Accuracy 83...................................

Gain Check at 2.5X Attenuation 83.....................

Gain Check at 12.5X Attenuation 85....................

Rise Time 85..........................................

Rise Time Check at 12.5X Attenuation 85................

Rise Time Check at 2.5X Attenuation 89.................

Appendix C: User Service 91............................

Probe/Adapter/Oscilloscope Compatibility 91................

Check Compatibility 91..............................

Error Conditions 92....................................

Inspection and Cleaning 93..............................

Replacement Parts 93...................................

Preparation for Shipment 94..............................

Table of Contents

iv P7380SMA 8 GHz Differential Probe Instruction Manual

List of Tables

Table 1: P7380SMA features 2..........................

Table 2: P7380SMA standard accessories 6................

Table 3: Optional accessories 8..........................

Table 4: Equipment required for functional checks 15.........

Table 5: Common-mode voltage and current table 39.........

Table 6: Differential to single-ended conversion table 55......

Table 7: Serial bus standards with

dynamic range requirements 63........................

Table 8: Warranted electrical characteristics 65..............

Table 9: Typical electrical characteristics 66................

Table 10: Nominal electrical characteristics 71..............

Table 11: Typical mechanical characteristics 71..............

Table 12: Equipment required for performance verification 73..

Table 13: P7380SMA probe compatibiity issues 91...........

Table 14: LED error conditions 92........................

Table of Contents

P7380SMA 8 GHz Differential Probe Instruction Manual v

List of Figures

Figure 1: P7380SMA differential probe 1..................

Figure 2: Connecting and disconnecting the probe 11..........

Figure 3: Probe signal input connections 12.................

Figure 4: Signal check setup 17...........................

Figure 5: Aux output check test setup 20....................

Figure 6: DC termination voltage check setup 22.............

Figure 7: Probe calibration setup 25........................

Figure 8: Using Auto Termination Voltage Control Mode 26....

Figure 9: Using External Termination Voltage Control Mode 27.

Figure 10: Using Internal Termination Voltage Control Mode 28.

Figure 11: Viewing the Aux Out signal on a spectrum analyzer 29

Figure 12: Using the probe with an 80A03 Interface and an 80A05

Module to view eye diagrams on a TDS8000 Series sampling

oscilloscope 31.....................................

Figure 13: P6150 probe tips 32............................

Figure 14: Simplified model of a differential amplifier 36......

Figure 15: Input termination network 37....................

Figure 16: Probe maximum input limits 42..................

Figure 17: Differential and Common-Mode operating ranges 43.

Figure 18: Termination voltage network drive 44.............

Figure 19: Overdrive Error indicator 47.....................

Figure 20: Differential measurement topology 48.............

Figure 21: 50 ohm termination on (--) input 51...............

Figure 22: Shorting termination on (--) input 52..............

Figure 23: Open (--) input 53.............................

Figure 24: Checking skew between inputs 57................

Figure 25: Using the phase adjuster 59.....................

Figure 26: Deskewing two P7380SMA probes 61.............

Figure 27: InfiniBand signals 64..........................

Figure 28: Typical CMRR plot 68.........................

Figure 29: Typical differential input return loss 69............

Figure 30: Typical differential-mode bandwidth 69............

Figure 31: Typical eye pattern from an InfiniBand signal 70....

Figure 32: Typical differential step response 70..............

Figure 33: Probe dimensions 72...........................

Figure 34: TekConnect-to-SMA Adapter 75.................

Figure 35: Preliminary test setup 76........................

Table of Contents

vi P7380SMA 8 GHz Differential Probe Instruction Manual

Figure 36: Checking differential mode input resistance 77......

Figure 37: Termination Voltage Accuracy, Ext mode setup 78...

Figure 38: Termination Voltage Accuracy, Auto mode setup 80..

Figure 39: Setup for the output offset zero test 82.............

Figure 40: DC Gain Accuracy setup 83.....................

Figure 41: Reverse the power supply polarity

on the probe inputs 84................................

Figure 42: Test system rise time setup 86...................

Figure 43: Setting the TDR parameters 87...................

Figure 44: Test system rise time setup with probe 88..........

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