Tektronix TCP0020 User manual

x
TCP0020 & TCP2020
50 MHz, 20 Amp AC/DC Current Probes
ZZZ
Instruction Manual
*P071300200*
071-3002-00

TCP0020 & TCP2020
50 MHz, 20 Amp AC/DC Current Probes
ZZZ
Instruction Manual
xx
Revision A
www.tektronix.com
071-3002-00

Copyright © Tektronix. All rights reserved. Licensed software products are owned by Tektronix or its subsidiaries or suppliers, and are protected by
national copyright laws and international treaty provisions.
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 price change privileges reserved.
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
Contacting Tektronix
Tektronix, Inc.
14150 SW Karl Braun Drive
P.O. Box 500
Beaverton, OR 97077
USA
For product information, sales, service, and technical support:
In North America, call 1-800-833-9200.
Worldwide, visit www.tektronix.com to find contacts in your area.

Warranty
Tektronix warrants that this product will be free from defects in materials and workmanship for a period of one (1) year from the date of shipment. If
any such 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. Parts, modules and replacement products used by Tektronix for
warranty work may be new or reconditioned to like new performance. All replaced parts, modules and products become the property of Tektronix.
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 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.
[W2 – 15AUG04]

Table of Contents
Table of Contents
General safety summary .................................................................................................................... v
Service safety summary.................................................................................................................... ix
Compliance Information..................................................................................................................... x
EMC Compliance ...................................................................................................................... x
Certifications and Compliances ..................................................................................................... xii
Environmental Considerations....................................................................................................... xv
Preface.................................................................................................................................... xvii
Documentation...................................................................................................................... xvii
Conventions Used in This Manual.................................................................................................. xvii
Returning the Probe for Servicing.................................................................................................. xviii
Key Features ............................................................................................................................... 1
Installation .................................................................................................................................. 3
Degaussing the Probes. .. ............................................................................................................ 5
Controls and Indicators..................................................................................................................... 8
Probe Head ........................................................................................................................... 8
TCP0020 Probe ..................................................................................................................... 10
TCP2020 Probe...................................................................................................................... 20
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Table of Contents
Functional Check .......................................................................................................................... 24
Accessories and Options.................................................................................................................. 25
Standard Accessories ............................................................................................................... 26
Optional Accessories ................................................................................................................ 29
Options............................................................................................................................... 31
Basic Operation............................................................................................................................ 32
Probing Principles ......................................................................................................................... 34
Degaussing a Probe with an Unpowered Conductor in the Jaws .................................................................. 34
Measuring Differential Current....................................................................................................... 35
Extending Current Range............................................................................................................ 37
Increasing Sensitivity ................................................................................................................ 40
Common Mode Noise/Magnetic Field Errors........................................................................................ 41
AC and DC Coupling.................................................................................................................42
Maximum Current Limits............................................................................................................. 43
Application Examples...................................................................................................................... 47
Inductance Measurements .......................................................................................................... 48
Measuring Inductor Turns Count .................................................................................................... 51
Specifications.............................................................................................................................. 53
Warranted Characteristics........................................................................................................... 53
Typical Characteristics............................................................................................................... 54
Nominal Characteristics ............................................................................................................. 60
ii 20 A Current Probes Instruction Manual

Table of Contents
Performance Verification .................................................................................................................. 61
Equipment Required................................................................................................................. 62
Making the DC Current Loop........................................................................................................ 63
Equipment Setup..................................................................................................................... 64
DC Gain Accuracy ................................................................................................................... 65
Rise Time and Bandwidth ........................................................................................................... 69
Test Record .......................................................................................................................... 71
Adjustments................................................................................................................................ 72
Prerequisites ......................................................................................................................... 72
DC Gain Accuracy ................................................................................................................... 73
Maintenance . .. ............................................................................................................................ 74
Troubleshooting...................................................................................................................... 74
Cleaning.............................................................................................................................. 76
Index
20 A Current Probes Instruction Manual iii

Table of Contents
iv 20 A Current Probes Instruction Manual

General safety summary
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.
While using this product, you may need to access other parts of a larger system. Read the safety sections of the other component
manuals for warnings and cautions related to operating the system.
To avoid fire or personal injury
Use proper power cord. Use only the power cord specified for this product and certified for the country of use.
Connect and disconnect properly. Do not connect or disconnect probes or test leads while they are connected to a voltage
source.
Connect and disconnect properly. De-energize the circuit under test before connecting or disconnecting the current probe.
Connect and disconnect properly. Connect the probe output to the measurement instrument before connecting the probe to the
circuit under test. Connect the probe reference lead to the circuit under test before connecting the probe input. Disconnect the probe
input and the probe reference lead from the circuit under test before disconnecting the probe from the measurement instrument.
Ground the product. This product is indirectly grounded through the grounding conductor of the mainframe power cord. To avoid
electric shock, the grounding conductor must be connected to earth ground. Before making connections to the input or output
terminals of the product, ensure that the product is properly grounded.
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.
20 A Current Probes Instruction Manual v

General safety summary
Do not connect a current probe to any wire that carries voltages above the current probe voltage rating.
Power disconnect. The power cord disconnects the product from the power source. Do not block the power cord; it must remain
accessible to the user at all times.
Do not operate without covers. Do not operate this product with covers or panels removed.
Do not operate with suspected failures. If you suspect that there is damage to this product, have it inspected by qualified
service personnel.
Avoid exposed circuitry. Do not touch exposed connections and components when power is present.
Use proper AC adapter. Use only the AC adapter specified for this product.
Do not operate in wet/damp conditions.
Do not operate in an explosive atmosphere.
Keep product surfaces clean and dry.
vi 20 A Current Probes Instruction Manual

General safety summary
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.
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.
20 A Current Probes Instruction Manual vii

General safety summary
The following symbol(s) may appear on the product:
viii 20 A Current Probes Instruction Manual

Service safety summary
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.
Disconnect power. To avoid electric shock, switch off the instrument power, then disconnect the power cord from the mains
power.
Use care when servicing with power on. Dangerous voltages or currents may exist in this product. Disconnect power, remove
battery (if applicable), and disconnect test leads before removing protective panels, soldering, or replacing components.
To avoid electric shock, do not touch exposed connections.
20 A Current Probes Instruction Manual ix

Compliance Information
Compliance Information
This section lists the EMC (electromagnetic compliance), safety, and environmental standards with which the instrument complies.
EMC Compliance
EC Declaration of Conformity – EMC (Applies Only to the TCP2020 Probe)
Meets intent of Directive 2004/108/EC for Electromagnetic Compatibility. Compliance was demonstrated to the following
specifications as listed in the Official Journal of the European Communities:
EN 61326-1 2006. EMC requirements for electrical equipment for measurement, control, and laboratory use. 123
CISPR 11:2003. Radiated and conducted emissions, Group 1, Class A
IEC 61000-4-2:2001. Electrostatic discharge immunity
IEC 61000-4-3:2002. RF electromagnetic field immunity
IEC 61000-4-4:2004. Electrical fast transient / burst immunity
IEC 61000-4-5:2001. Power line surge immunity
IEC 61000-4-6:2003. Conducted RF immunity
IEC 61000-4-11:2004. Voltage dips and interruptions immunity 4
EN 61000-3-2:2006. AC power line harmonic emissions
EN 61000-3-3:1995. Voltage changes, fluctuations, and flicker
x20 A Current Probes Instruction Manual

Compliance Information
European contact.
Tektronix UK, Ltd.
Western Peninsula
Western Road
Bracknell, RG12 1RF
United Kingdom
1This product is intended for use in nonresidential areas only. Use in residential areas may cause electromagnetic interference.
2Emissions which exceed the levels required by this standard may occur when this equipment is connected to a test object.
3For compliance with the EMC standards listed here, high quality shielded interface cables should be used.
4Performance Criterion C applied at the 70%/25 cycle Voltage-Dip and the 0%/250 cycle Voltage-Interruption test levels
(IEC 61000-4-11).
Australia / New Zealand Declaration of Conformity – EMC
Complies with the EMC provision of the Radiocommunications Act per the following standard, in accordance with ACMA:
CISPR 11:2003. Radiated and Conducted Emissions, Group 1, Class A, in accordance with EN 61326-1:2006 and
EN 61326-2-1:2006.
20 A Current Probes Instruction Manual xi

Compliance Information
Certifications and Compliances
EC Declaration of Conformity - Low Voltage
Compliance was demonstrated to the following specification as listed in the Official Journal of the European Communities:
Low Voltage Directive 2006/95/EC.
EN 61010-1:2001. Safety requirements for electrical equipment for measurement control and laboratory use.
EN 61010-2-032:2002. Particular requirements for handheld current clamps for electrical measurement and test equipment.
U.S. Nationally Recognized Testing Laboratory Listing
UL 6010B-2-032:2003. Particular requirements for handheld current clamps for electrical measurement and test equipment.
UL 61010-1 (2nd Edition)- Safety requirements for Electrical Equipment for measurement, Control, and Laboratory use - Part
1: General Requirements
Canadian Certification
CAN/CSA C22.2 No. 61010-1-04. Particular requirements for electrical equipment for measurement, control, and laboratory
use. Part 1.
CAN/CSA C22.2 No. 61010-2-032:04. Particular Requirements for Hand Held Current Clamps for Electrical Measurement
and Test.
xii 20 A Current Probes Instruction Manual

Compliance Information
Additional Compliance
IEC 61010-1:2001. Safety requirements for electrical equipment for measurement, control, and laboratory use.
IEC 61010-2-032:2002. Particular requirements for handheld current clamps for electrical measurement and test equipment.
Equipment Type
Measurement
Pollution Degree Descriptions
A measure of the contaminates that could occur in the environment around and within a product. Typically the internal environment
inside a product is considered to be the same as the external. Products should be used only in the environment for which they
are rated.
Polution Degree 1. No pollution or only dry, nonconductive pollution occurs. Products in this category are generally
encapsulated, hermetically sealed, or located in clean rooms.
Polution Degree 2. Normally only dry, nonconductive pollution occurs. Occasionally a temporary conductivity that is caused by
condensation must be expected. This location is a typical office/home environment. Temporary condensation occurs only
when the product is out of service.
20 A Current Probes Instruction Manual xiii

Compliance Information
Polution Degree 3. Conductive pollution, or dry, nonconductive pollution that becomes conductive due to condensation. These
are sheltered locations where neither temperature nor humidity is controlled. The area is protected from direct sunshine,
rain, or direct wind.
Polution Degree 4. Pollution that generates persistent conductivity through conductive dust, rain, or snow. Typical outdoor
locations.
Pollution Degree
Pollution Degree 2 (as defined in IEC 61010-1). Note: Rated for indoor use only.
xiv 20 A Current Probes Instruction Manual