Tektronix TCA-1MEG User Manual

ZZZ

TCA-1MEG High Impedance Buffer Ampliﬁer

Instruction Manual

*P071101002*

071-1010-02

ZZZ

TCA-1MEG High Impedance Buffer A

mpliﬁer

Instruction Manual

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

071-1010-02

Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supersedes that in all previously published material. Speciﬁcations and p

TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.

served. Licensed software products are

rice change privileges reserved.

Contacting Tektronix

Tektronix, Inc. 14200 SW Karl Braun Drive P.O. Box 500 Beaverton, OR 97077 USA

For product information, sales, service, and technical su pport:

In North America, call 1-800-83 3-920 0. Worldwide, visit www.tektronix.com to ﬁnd contacts in your area.

Warra nty

Tektronix warrants that this produ workmanship for a period of one (1) year from the date of shipment. If any such product proves defective during this w the d efective product without charge for parts and labor, or will provide a replacement in exchange for the defective Tektronix for warranty work may be new or reconditioned to like new performance. All replaced parts, modules and

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 WITH RESPECT TO THE PRODUCT I TEKTRONIX AN D ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHAN RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AN BREACH OF THIS WARRANTY. TEKTRONIX AN D ITS VENDORS WILL NOT BE LIABL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADV

[W2 – 15AUG04]

N LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED.

TABILITY OR FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX’

D EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR

E FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL

ANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.

ct will be free from defects in materials and

arranty period, Tektronix, at its option, either will repair

product. Parts, modules and replacement products used by

products become the property of Tektronix.

Table of Contents

General Safety Summary ............... ................................ iv

Service Safety Summary................................................ vi

Environmental Considerations ...... .................................. vii

Preface................................................... ................. ix

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

Product Description ........................................ ......... 1

Accessories ......................... ................................. 3

Input Voltage Derating ..................................... ......... 3

Probe Calibration for High Accuracy............ .................. 4

Functionality Not Supported ................................. ...... 4

Installation ........... ................................................ 5

Connecting the TCA-1MEG to the Host Instrument ............. 6

Connecting a Probe to the TCA-1MEG ............... ............ 7

Attaching and Grounding a TCA-1MEG System................. 8

Functional Overview................................................ 9

Cleaning............................................................ 10

Functional Checks.................................................. .... 11

Prerequisites ..................... .................................. 11

Required Equipment ........................... ................... 12

Run the SPC (Signal Path Compensation) on the Host

Instrument ................................. ................... 14

Calibrate the TCA-1MEG to the Host Instrument.............. 14

Calibrate the P6139A Passive Voltage Probe t o the TCA-1MEG

and Host Instrument.............. ............................ 16

LF Probe Compensation .. ........................................ 18

Check Vertical Input Coupling .......... ......................... 20

Check Bandwidth Limit ....................... ................... 24

Speciﬁcations ............................ ............................... 29

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

TCA-1MEG System Bandwidth ............................. .... 38

Replaceable Parts. . ... . ... . .. . . ... . ... .. ... . ... . .. . . ... . ... .. ... . ... . .. . 43

TCA-1MEG High Impedance Buffer A m pliﬁer Instruction Manual i

Table of Contents

List of Figures

Figure 1: TCA-1MEG High Impedance Buffer Ampliﬁer............ 1

Figure 2: Connecting and dis

Figure 3: Calibration data message .. ................................... 7

Figure 4: TekConnect and TEKPROBE Interface features . .. ... .. ... 9

Figure 5: Simpliﬁed block

Figure 6: Probe Compensation Output of the TDS66 04 . . .. . . .. . .. . 13

Figure 7: Setup with the P6139A attached to the TCA-1MEG . . . .. 18

Figure 8: Probe compen

Figure 9: Test equipm ent hookup for the Vertical Input Coupling and

Bandwidth Limit checks.............................. ............ 20

Figure 10: Typical

Figure 11: Typical waveform at AC Coupling ....................... 22

Figure 12: Typical waveform at DC Coupling....................... 23

Figure 13: Typic

Figure 14: Typical waveform at 100 MHz bandwidth .............. 26

Figure 15: Typical waveform at 20 MHz bandwidth................ 27

Figure 16: Ty

Figure 17: Voltage Derating versus Frequency .......... ............ 32

Figure 18: TCA-1MEG dimensions . ................................. 33

Figure 19: T

Figure 20: TCA-1MEG replaceable parts .. . ... . ... . . . ... . ... . ... . . . . 44

pical Input Impedance and Phase versus Frequency . 31

CA-1MEG System Bandwidth equipment hookup. . . . 38

connecting the TCA-1MEG............ 6

diagram.. ................................. 10

sation waveforms ........................... 19

waveform at GND................................ 21

al waveform at Full (500 MHz) bandwidth .. . ... . 25

ii TCA-1MEG High Impedance Buffer Ampliﬁer Instruction Manual

List of Tables

Table 1: Compatible devices that require high impedance input . . ... 2

Table 2: Required equipment

Table 3: Warranted electrical speciﬁcations.......................... 29

Table 4: Typical electrical characteristics ........................ .... 30

Table 5: Physical charact

Table 6: Environmental characteristics ............................... 33

Tab le 7: Cert iﬁcations and compliances.............................. 34

Table 8: Equipment req

Table 9: TCA-1MEG test record...................................... 41

Table 10: TCA-1MEG replaceable parts .. . . . ... . ... . .. ... . ... . . . ... . 44

Table of Contents

................................... ....... 12

eristics ...................... ................ 33

uired for performance veriﬁcation ......... 37

TCA-1MEG High Impedance Buffer A m pliﬁer Instruction Manual iii

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 th e

measurement instrument before connecting the p robe to the circuit under test. Connect th before connecting the probe inp ut. Disconnect the probe input and the probe reference lead from the circuit under test before disconnecting the probe from the me

Ground the Produ ct. This product is indirectly grounded through the

grounding conduc shock, the grou nding conductor must be connected to earth ground. Before making connections to the input or output terminals of the product, ensur

e that the product is pro perly grounded.

e probe reference lead to the circuit und er test

asurement instrument.

tor of the mainframe power cord. To avoid electric

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

ratings and ma further ratings information before making connections to the product.

Connect the p

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

or panels r

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

damage to

Avoid Exposed Circuitry. Do not touch exposed connections and

compone

iv TCA-1MEG High Impedance Buffer Ampliﬁer Instruction Manual

rkings on the product. Consult the product manual for

robe reference lead to earth ground only.

emoved.

this product, have it inspected by qu aliﬁed service personnel.

nts when power is present.

Do Not Operate in Wet/Damp Conditions.

Do Not Operate in an Explosive Atmosphere.

Keep Product Surfaces Clean and Dry.

General Safety Summary

Provide Prope r Ventilation.

Refer to the manual’s installation instructions

for details on installing the product so it has proper ventilation.

Terms in this Manual

These terms may a ppear 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 tha t cou ld

result in damage t o this p roduct or other property.

Symbols and 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.

The following symbol(s) may appear on the product:

TCA-1MEG High Impedance Buffer A m pliﬁer Instruction Manual v

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 p

of this product unless another person capable of rendering ﬁrst aid and resuscitation is present.

Disconnect Power. To avoid electric shock, switch off the instrument

power, then disconnect the power cord from the mains power.

Use Care When Servici

may exist in this product. Disconnect power, remove battery (if applicable), and disconnect test leads before removing protective panels, soldering, or rep

To avoid electric shock, do not touch exposed connections.

ng With Power On.

lacing components.

erform internal service o r adjustments

Dangerous voltages or currents

vi TCA-1MEG High Impedance Buffer Ampliﬁer Instruction Manual

Environmental Considerations

This section provides informa the product.

tion about the environmen tal impact of

Product End-of-Life Handling

Observe the following guidelines when recycling an instrument or component:

Equipment Recycling. Production of this equipment required the

extraction and use of natural resources. The equipment may contain substances that could be harmful to the environment or human health if improperly handled at the product’s end of life. In order to avoid release of such substances into the environm ent and to reduce the use of natural resources, we encourage you to recycle this product in an appropriate system that will ensure that most of the materials are reused or recycled appropriately.

This symbol indicates that this product complies with the applicable European Union requirements according to Directives 2002/96/EC and 2006/66/EC on waste electrical and electronic equipment (WEEE) and batteries. For information about recycling options, check the Support/Service section of the Tektronix Web site (www.tektronix.com).

Restriction of Hazardous Substances

This product has been classiﬁed as Monitoring and Control equipment, and is outside the scope of the 2002/95/EC RoHS Directive.

TCA-1MEG High Impedance Buffer A m pliﬁer Instruction Manual vii

Environmental Considerations

viii TCA-1MEG High Impedance Buffer Ampliﬁer Instruction Manual

Preface

This is the Instruction manual Buffer Ampliﬁer. Read this preface to learn how this manual is structured an d what conventions it uses. Before using this manual or the TCA-1MEG ampliﬁer, read the G Safety Summary sections at the beginning of this m anual for safety and other important background information.

Manual Structure

This manual is divided into sections, which are made of related topics:

Getting Started includes a product description, list of accessories, and instructions for installation.

Functional Checks includes procedures for verifying that the TCA-1MEG functions p rop erly with a host instrument.

Speciﬁcations includes warranted electrical speciﬁcations, typical electrical characteristics, and graphs for typical input impedance, and typical band

Performance Veriﬁcation includes a procedure for verifying warranted ele

NOTE. Servic

Applicatio instrument

ns CD ROM (Tektronix part number 063-3376-XX) for your host

, and is also available for download from the Tektronix Web site.

for the TCA-1MEG High Impedance

eneral Safety Summary and Service

width.

ctrical speciﬁcations.

e software for this instrument is included on the TDS

Be sure to read the introductory text for each procedure, which provide important information needed to use the TCA-1MEG High Impedance Buffer Ampliﬁer correctly, safely, and efﬁciently.

Manual Conventions

The following conventions are used in this manual:

TCA-1MEG High Impedance Buffer A m pliﬁer Instruction Manual ix

Preface

Safety

Symbols and terms related to safety appear in the Service Safety Summary found at the beginning of this m anual.

x TCA-1MEG High Impedance Buffer Ampliﬁer Instruction Manual

Getting Started

Product Description

The TCA-1MEG is a High Impedance Buffer Ampliﬁer system that broadens the functionality of a TekConnect host instrument. Features include:

Input impedance — 1 MΩ,10pF

Bandwidth — 500 MHz

Bandwidth limit (selectable) — Full (500 MHz), 100 MHz, and 20 MHz

Input coupling (selectable) — A C , D C, and GND

Input Connection — 1 MΩ TEKPROBE BNC

The TCA-1MEG ampliﬁer, or other Tektronix TekConnect probes and adapters, enable you to easily conﬁgure each channel of your host instrument for the input characteristics you require.

To achieve a 1 MΩ system when you need it, use this ampliﬁer to connect a Tektronix 1 MΩ TEKPROBE BNC probe or other standard 1MΩ BNC accessory to your 50 Ω TekConnect host instrument. To regain your high-speed, 50 Ω signal path, simply replace the TCA-1MEG with a high performance TekConnect probe or adapter.

Figure 1: TCA-1MEG High Impedance Buffer Ampliﬁer

TCA-1MEG High Impedance Buffer A m pliﬁer Instruction Manual 1

Getting Started

The table below lists Tektronix high-voltage passive probes, high-voltage active probes, current probes, and other measurement analysis tools that require high impedance input. Use these devices with the TCA-1MEG to extend the use of your TekConnect host instrument.

Table 1: Compatible devices that require high impedance input

Device typ e Model Description

Passive voltage probes

High voltage probes P6015A 20 kV, 1000X, 75 MHz, passive

Micro-volt differential p

Current probes

Others

ine-digit part numbers (xxx-xxxx-xx) are Tektronix part numbers.

robe

P6101B 15 MHz, 1X, passive

P6139A 500 MHz, 10X, passive

P5100 2.5 kV, 100X, 250 MHz, passive

P5205

P5210

ADA400A

P6021

P6022

1.3 kV, 100 MHz, active differential

4.4 kV, 50 MHz, active differential

100X / 10X / 1X / 0.1X preampliﬁer

AC, 15 A

AC, 6 A

,60MHz

p-p

, 120 MHz

p-p

AM503S AC/DC current ampliﬁer

measurement system

012-0057-01

0049-02

011-

012-0482-00

50 Ω BNC-to-BNC coaxial cable

50 Ω feed through termination

50 Ω BNC-to-BNC coaxial cable, male to male

2 TCA-1MEG High Impedance Buffer Ampliﬁer Instruction Manual

+ 42 hidden pages