TCP0030 120 MHz, 30 A AC/DC Current Probe Instruction Manual

TCP0030 120 MHz, 30 A AC/DC Current Probe Instruction Manual
TCP0030
120 MHz, 30 A AC/DC Current Probe
Instruction Manual
www.tektronix.com
071-1812-00
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.
14200 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 2
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.
Table of Contents
Table of Contents
General Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
v
Service Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
vii
Environmental Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
viii
Preface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Conventions Used in this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Returning the Probe for Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
x
x
x
xi
Key Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting to the Host Instrument . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Degaussing the Probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Probe Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
2
3
5
Functional Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10
Basic Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11
Application Examples. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inductance Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Measuring Inductor Turns Count . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13
14
17
Accessories and Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using Standard Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19
19
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Table of Contents
ii
Optional Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22
25
Probing Principles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Degaussing a Probe with an Unpowered Conductor in the Jaws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Measuring Differential Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Extending Current Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Increasing Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Common Mode Noise/Magnetic Field Errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AC and DC Coupling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum Current Limits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26
26
27
29
32
33
34
35
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warranted Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Typical Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Nominal Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Certifications and Compliances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
39
40
41
47
47
Performance Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Making the DC Current Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DC Gain Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rise Time and Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
50
51
52
53
54
59
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Table of Contents
Adjustments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DC Gain Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
63
63
63
64
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repairing the Probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Probe Head Disassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replaceable Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
66
66
67
68
69
72
76
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Index
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Table of Contents
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TCP0030 Current Probe 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.
To Avoid Fire or Personal Injury
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.
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.
Do not connect a current probe to any wire that carries voltages above the current probe voltage rating.
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.
TCP0030 Current Probe Instruction Manual
v
General Safety Summary
Do Not Operate in Wet/Damp Conditions.
Do Not Operate in an Explosive Atmosphere.
Keep Product Surfaces Clean and Dry.
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.
The following symbols may appear on the product:
vi
TCP0030 Current Probe 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.
TCP0030 Current Probe Instruction Manual
vii
Environmental Considerations
Environmental Considerations
This section provides information about the environmental impact of the product.
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 environment 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.
The symbol shown below indicates that this product complies with the European Union’s requirements according to Directive
2002/96/EC on waste electrical and electronic equipment (WEEE). For information about recycling options, check the
Support/Service section of the Tektronix Web site (www.tektronix.com).
viii
TCP0030 Current Probe Instruction Manual
Environmental Considerations
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.
This product is known to contain lead, cadmium, mercury, and hexavalent chromium.
TCP0030 Current Probe Instruction Manual
ix
Preface
Preface
This manual describes the installation and operation of the TCP0030 current probe. Basic probe operations and concepts are
presented in this manual. You can also access the Tektronix Web site for this document and other related information.
Documentation
To read about
Use these documents *
TCP0030 Probe: First Time Operation, Functional Check,
Operating Basics, Specifications, Performance Verification
Read this Instruction Manual.
In-depth oscilloscope operation, user interface help, GPIB
commands
Access the online help from the Help menu on the host
instrument.
*
To access the documentation that is installed on your instrument, click Start in the taskbar and select Programs > TekApplications.
Conventions Used in this Manual
The following icon is used throughout this manual to indicate a step sequence.
x
TCP0030 Current Probe Instruction Manual
Preface
Returning the Probe for Servicing
If your probe requires servicing, you must return the probe to Tektronix. If the original packaging is unfit for use or not available, use
the following packaging guidelines:
Preparation for Shipment
1. Use a corrugated cardboard shipping
carton having inside dimensions at
least one inch greater than the probe
dimensions. The box should have a carton
test strength of at least 200 pounds.
2. Put the probe into an antistatic bag or wrap
it to protect it from dampness.
3. Place the probe into the box and stabilize it
with light packing material.
4. Seal the carton with shipping tape.
5. Refer to Contacting Tektronix at the
beginning of this manual for the shipping
address.
TCP0030 Current Probe Instruction Manual
xi
Preface
xii
TCP0030 Current Probe Instruction Manual
Key Features
Key Features
You can use the TCP0030 current probe to make accurate measurements from DC to 120 MHz. The probe combines proven
Hall-effect technology with the new Tektronix TekVPI oscilloscope interface. Key features include:
>120 MHz bandwidth, <2.92 ns rise time
AC/DC Measurement capability
50 A peak pulse current (pulse widths
<10 μs)
5 A and 30 A range settings
1 mA sensitivity (on TekVPI oscilloscopes
that support the 1 mV/div setting)
1% DC Accuracy (typical)
One-button degauss/autozeroing
Probe control through the TekVPI
oscilloscope menus or remotely through
the oscilloscope
Direct scaling and unit readout on host
instruments
AC coupling (on TekVPI oscilloscopes that
support AC coupling)
TCP0030 Current Probe Instruction Manual
1
Installation
Installation
Connecting to the Host Instrument
CAUTION. The probe head is a precision assembly. Do not drop the probe or subject it to physical shock, strain, or sudden changes
in ambient conditions. Do not insert conductors larger than 3.8 mm diameter into the probe jaw. Damage to the probe may result.
1. Slide the probe into the TekVPI receptacle.
The probe snaps in when fully engaged.
2. To disconnect, press the latch button and
pull the probe away from the instrument.
When the probe is connected, the host
instrument reads information from the probe
and identifies the device. All of the probe LEDs
light briefly for a quick visual check.
2
TCP0030 Current Probe Instruction Manual
Installation
Degaussing the Probe
1. After the probe is identified by the host
instrument, the screen display prompts you
to run a degauss routine.
The multicolor Degauss/AutoZero status
LED on the probe also indicates that a
degauss is needed, by flashing red.
2. To degauss the probe, press the
Degauss/AutoZero button on the probe
or in the Degauss window on the host
instrument.
NOTE. The DC gain and offset errors are not
guaranteed when this LED flashes red.
3. The multicolor Degauss/AutoZero status
LED glows green to indicate a successful
degauss routine was run, and that the
probe is in normal operating mode.
TCP0030 Current Probe Instruction Manual
3
Installation
Quick Tip
To maintain measurement accuracy, degauss
your probe in each of these cases:
After you turn on the measurement system
and allow a 20-minute warm-up period
Before you connect the probe to a
conductor
Whenever a current or thermal overload
condition occurs
Whenever you subject the probe to a
strong external magnetic field
4
TCP0030 Current Probe Instruction Manual
Installation
Probe Controls and Indicators
When the probe is powered on, all of the
indicator LEDs light briefly, and at least two
LEDs remain lighted—one to indicate the
current range selected and one to display the
Degauss/AutoZero status.
NOTE. The probe will retain the range state
and will restore it when it is power cycled.
Jaw Open LED
1. If the Jaw Open LED glows, the probe
slider is unlocked.
2. Lock the probe slider to accurately measure
current or to degauss the probe.
CAUTION. Do not measure conductors larger
than 3.8 mm diameter. Damage to the probe
jaws may result.
TCP0030 Current Probe Instruction Manual
5
Installation
Overload LED
The multicolor Overload LED alerts you that
the probe specifications are being exceeded.
When the LED:
Glows red, the maximum input continuous
current limit has been exceeded
Glows orange, the safe operating
temperature of the probe has been
exceeded
Flashes red and orange, both the
maximum input continuous current limit
and the safe operating temperature of the
probe have been exceeded
CAUTION. Do not subject the probe to
conditions that cause the Overload LED to light
for extended periods.
Quick Tip
An input current overload can magnetize
the probe. Always degauss the probe after
an overload.
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TCP0030 Current Probe Instruction Manual
Installation
Range Button
1. Press the Range button to select between
the 5 A and 30 A current range settings.
The green LEDs indicate the range
selected. The range and units are also
displayed on the oscilloscope screen.
TCP0030 Current Probe Instruction Manual
7
Installation
Degauss/AutoZero
When the multicolor Degauss/AutoZero status
LED flashes red, you must degauss the probe.
If the LED flashes orange, you should degauss
the probe. The DC gain and offset errors are
not guaranteed when this LED flashes orange.
The Degauss/AutoZero function also clears
(AutoZeroes) any DC offset in the probe.
To degauss the probe, do the following:
1. Disconnect the probe from the current
source.
2. Press the Degauss/AutoZero button to
initiate the degauss routine.
The LED glows green after successfully
completing the Degauss/AutoZero routine.
8
TCP0030 Current Probe Instruction Manual
Installation
Menu Button
1. Press the Menu button to display the Probe
Setup screen on the oscilloscope.
Use this screen to check or change the
settings on your probe.
NOTE. The Probe Setup screen may include
buttons to access other probe information,
depending on the oscilloscope model.
2. Press the Menu button again to close the
Probe Setup screen.
TCP0030 Current Probe Instruction Manual
9
Functional Check
Functional Check
The following procedure checks that your probe is functioning properly. To verify that your probe meets the warranted specifications,
refer to the Performance Verification procedures. (See page 50.)
CAUTION. The probe jaw opening accommodates insulated conductors with a diameter of 3.8 mm or less. Do not insert
conductors larger than 3.8 mm diameter into the probe jaw. Damage to the probe may result.
To check that your probe functions correctly,
do the following:
1. Connect the probe to any channel of the
oscilloscope.
2. Press the Degauss/AutoZero button.
3. Clamp the probe to your circuit.
4. Set the oscilloscope to display the probe
channel.
5. Adjust the oscilloscope or use the Autoset
function to display a stable waveform.
When you see a stable waveform, your
probe is functioning correctly.
10
TCP0030 Current Probe Instruction Manual
Basic Operation
Basic Operation
CAUTION. Do not force conductors larger than 3.8 mm into the probe jaws. Damage to the probe may result.
The mating surfaces of the probe head transformer are precision-polished and should be handled with care. Measurements may
be degraded by dirt on the mating surfaces of the probe head transformer. Refer to the Maintenance section of this manual for
information on how to properly clean the probe head transformer surfaces.
1. Check the oscilloscope display before
connecting the probe to a conductor.
If there is a DC offset, degauss the probe.
(See page 3, Degaussing the Probe.)
2. Close and lock the probe jaw over the
conductor.
For correct polarity reading, connect the
probe so that the current flow, from positive
to negative, is aligned with the arrow on
the probe jaw.
3. Read the measurement on the oscilloscope
display.
TCP0030 Current Probe Instruction Manual
11
Basic Operation
Grounding the Probe
Use the Ground Lead to improve EMI rejection at high frequencies.
1. Clip the Ground Lead to the ground post at
the bottom of the probe head.
2. Connect the alligator end of the clip to the
DUT chassis ground.
12
TCP0030 Current Probe Instruction Manual
Application Examples
Application Examples
This section explains ways to use your probe in common troubleshooting tasks and how to extend the use of your measurement
system.
TCP0030 Current Probe Instruction Manual
13
Application Examples
Inductance Measurements
You can use the current probe to measure the inductance of coils that have either a low-impedance or high-impedance pulse
source of a known value.
Low-Impedance Pulse Sources
This figure shows a constant-voltage pulse
generator of extremely low output impedance
connected to an inductor that has low
resistance.
1. Connect the inductor across the output
terminals of the pulse generator.
2. Maintain a constant voltage across the
inductor.
3. Clamp the current probe over one of the
source leads.
NOTE. If the probe impedance is a significant
part of the total circuit inductance, measurement
accuracy will be affected. Refer to the probe
specifications for probe insertion impedance.
14
TCP0030 Current Probe Instruction Manual
Application Examples
4. Measure the current ramp. The inductance
is effectively defined by the slope of the
current ramp shown here.
5. Calculate the inductance using the
following formula:
where:
L is the inductance in henries,
E is the voltage of the pulse generator,
dt is the change in time, and
di is the change in current.
TCP0030 Current Probe Instruction Manual
15
Application Examples
High-Impedance Pulse Sources
If the pulse source has a higher impedance of
known resistance, such that the output voltage
drops as the current increases, the inductance
of a coil can be calculated by the time constant
of the charge curve.
The current ramp shows how the values for the
inductance formula are obtained.
Use this formula to calculate the inductance
based on the current measurement:
where:
L is the inductance in henries,
τ is the time required for the current to rise
or fall 63.2% of the total current value, and
R is the source resistance of the pulse
generator.
16
TCP0030 Current Probe Instruction Manual
Application Examples
Measuring Inductor Turns Count
To obtain an approximate turns count of an
inductor, do the following:
1. Connect the inductor to a current limited
source, as shown.
2. Measure the input current on one of the
inductor leads.
3. Clamp the current probe around the
inductor and note the current value.
The number of turns is equal to the ratio of coil
current to input current.
The accuracy of this method is limited by the
current measurement accuracy.
TCP0030 Current Probe Instruction Manual
17
Application Examples
For a more precise turns count, you need a
coil with a known number of turns to use as a
reference. Do the following:
1. Repeat steps 1 and 2 above and make the
following changes:
2. Insert the reference coil into the current
probe.
3. Insert the test coil into the current probe
so that the currents oppose each other
as shown. You must observe the polarity
of coil current to determine whether the
test coil has less or more turns than the
reference coil. The turns are calculated by
using the formula:
where:
N2 is the number of turns in the test coil,
N1 is the number of turns in the reference
coil,
Im is the measured coil current, and
I1 is the input current.
18
TCP0030 Current Probe Instruction Manual
Accessories and Options
Accessories and Options
This section lists the standard accessories and provides information on how to use the accessories. Specifications are provided
where appropriate so that you can choose the accessory that best fits your needs.
Using Standard Accessories
Probe Ground Lead
1. Fasten the small clip to the ground stub on
the probe body.
2. Clip the alligator clip to your circuit.
3. Attach the probe to your circuit.
Reorder Tektronix part number 196-3120-XX,
qty. 1.
TCP0030 Current Probe Instruction Manual
19
Accessories and Options
Nylon Carrying Case with Pouch
and Inserts
Use the carrying case to hold the probe, the
accessories, and the Instruction Manual.
1. Place the probe, accessories, and manual
in the carrying case.
2. Close the carrying case to transport the
accessories to another location or for
storage.
Reorder Tektronix part number: 016-1952-XX
20
TCP0030 Current Probe Instruction Manual
Accessories and Options
Protective Cover
At your workbench, put the probe in the padded
protective cover to prevent accidental damage
to the probe.
1. Insert the probe in the protective cover.
2. Close the protective cover with the strap to
secure the cover to the probe.
Reorder Tektronix part number: 016-1923-XX
Instruction Manual
The instruction manual provides operating and
maintenance instructions.
Reorder Tektronix part number:
071-1812-XX (English)
071-1813-XX (Japanese)
071-1814-XX (Simplified Chinese)
TCP0030 Current Probe Instruction Manual
21
Accessories and Options
Optional Accessories
This section lists the optional accessories that you can purchase to help you with your probing tasks.
Current Loop
Use the 1-turn, 50 Ω current loop for the
performance verification procedures. The
BNC connector allows for easy connections to
current sources.
Reorder Tektronix part number: 015-0601-50
1. Connect the current loop to the current
supply.
2. Connect the probe to the loop.
3. Power on the current supply.
4. Follow the procedure for the specific task
that you are performing (for example,
Performance Verification or Adjustments).
22
TCP0030 Current Probe Instruction Manual
Accessories and Options
CT-4 High-Current Transformer
Use the CT-4 transformer with the TCP0030
current probe to provide step-down ratios of
20:1 or 1000:1. The CT-4 provides a means to
measure high-amplitude AC currents.
1. Clamp the CT-4 transformer around the
conductor you that want to test.
2. Clamp the TCP0030 Probe onto the
measurement port on the back of the CT-4.
3. Proceed with your measurements.
Reorder Tektronix part number: CT-4
TCP0030 Current Probe Instruction Manual
23
Accessories and Options
Deskew/Calibration Fixture
Connect this fixture to host instruments that
support the probe calibration or deskew
procedures. The deskew procedures
compensate for gain errors and timing
differences between current and voltage
probes. Refer to your oscilloscope manual or
fixture documentation for instructions.
Reorder Tektronix part number: 067-1686-00
Compensation Box Tool
Use this tool to open the compensation box
when servicing the probe (replacing the switch
panel, cable, or compensation box). Refer to
the compensation box replacement procedures
for instructions for using the tool.
Reorder Tektronix part number: 003-1892-00
24
TCP0030 Current Probe Instruction Manual
Accessories and Options
Options
Service Options
Option CA1. Provides coverage for a single Calibration Event
Option C3. Calibration Service 3 years
Option C5. Calibration Service 5 years
Option D1. Calibration Data Report
Option D3. Calibration Data Report, 3 years (with Option C3)
Option D5. Calibration Data Report, 5 years (with Option C5)
Option R3. Repair Service 3 years
Option R5. Repair Service 5 years
Manual Options
Option L0. English language Instruction Manual
Option L5. Japanese language Instruction Manual
Option L7. Simplified Chinese language Instruction Manual
TCP0030 Current Probe Instruction Manual
25
Probing Principles
Probing Principles
The following information is provided to help you use the full potential of your current probe.
Degaussing a Probe with an Unpowered Conductor in the Jaws
You can degauss your current probe while a conductor of an unpowered circuit is clamped in the jaws. The advantage of
degaussing with an unpowered circuit is that any offset from stray DC magnetic fields is compensated. Degaussing with the
conductor in the probe jaws eliminates the need to manually remove the probe.
NOTE. Be certain that the conductor in the probe jaws is completely unpowered. Any current flowing through the conductor will
cause a residual offset in the current probe and may cause an inaccurate measurement or an error condition.
The impedance of your circuit must be higher than 10 mΩ for the degauss procedure to work. (The probe core will not saturate with
a circuit impedance of less than 10 mΩ). While degauss occurs, the probe will induce a 60 mV, 200 Hz signal in the unpowered
circuit. Your circuit must be able to absorb this induced voltage. With low impedance circuits, several amperes may be induced in
the circuit being measured. This may be of concern when you are using very small conductors.
26
TCP0030 Current Probe Instruction Manual
Probing Principles
Measuring Differential Current
To simplify your differential or null current
measurements, you can place two conductors
in one current probe.
WARNING. Do not put uninsulated conductors in the probe. An uninsulated conductor is any conductor without insulation or
without insulation rated for the voltage present on the conductor under test.
An insulated conductor is any conductor that is surrounded by an insulating material that is capable of isolating the voltage present
on the conductor. Lacquer coatings like those typically found on transformer windings do not provide sufficient, reliable insulation
for use with current probes. The lacquer coating can be easily nicked or damaged, compromising the insulating capabilities of
the lacquer coating.
Do not force the slide closed. Damage to the probe may result. If you cannot close the slide around the conductor(s), either reduce
the number of conductors you are measuring, or, if possible, take your measurement on a smaller conductor.
TCP0030 Current Probe Instruction Manual
27
Probing Principles
1. Orient the two conductors under test so
that the polarities (+ and –) oppose each
other.
2. Clamp the current probe around the two
conductors. Be careful not to pinch a
conductor in the probe jaws.
3. Measure the current.
Conventional current flows from positive to
negative. A waveform above the baseline
indicates that the conductor with the
conventional current flow in the direction
of the probe arrow is carrying the greater
current.
28
TCP0030 Current Probe Instruction Manual
Probing Principles
4. To adjust for a current null, adjust the
current in one of the conductors until the
displayed measurement is zero.
Extending Current Range
If your measurement exceeds the maximum current rating of the connected probe, you can extend the AC and DC current ranges
without exceeding specified limits by using the following methods.
WARNING. To avoid personal injury or equipment damage, do not exceed the specified electrical limits of the probe or any
applicable accessories. When using multiple conductors, do not exceed current limits on either conductor.
TCP0030 Current Probe Instruction Manual
29
Probing Principles
Extending DC Range
If you want to measure a low-amplitude AC component that is superimposed on an extremely large steady-state DC component
(such as in a power supply), or if you want to extend the DC current range of your probe, you can add offset (bucking) current with
a second conductor.
WARNING. Do not put more than one uninsulated conductor at a time in the probe jaws. An uninsulated conductor is any
conductor without insulation or without insulation rated for the voltage present on the conductor under test.
To supply additional bucking current:
1. Place a second conductor that has a pure
DC component of known value in the probe
jaw with the conductor under test.
2. Orient the second conductor so that the
bucking current flows in the opposite
direction of the DC flow in the conductor
under test.
3. To determine measurement values, add
the value of the bucking current to the
displayed measurement.
30
TCP0030 Current Probe Instruction Manual
Probing Principles
NOTE. Adding a second conductor to the probe increases the insertion impedance and reduces the upper bandwidth limit of the
probe. Winding multiple turns further increases the insertion impedance, further reducing the upper bandwidth limit.
To increase the value of the bucking current:
1. Wind multiple turns of the second
conductor around the probe.
The bucking current is equal to the current
flowing in the conductor, multiplied by the
number of turns wound around the probe.
For example, if the second conductor has a
current of 100 mA DC and is wrapped around
the probe five times, the DC bucking current is
100 mA multiplied by 5, or 500 mA DC.
TCP0030 Current Probe Instruction Manual
31
Probing Principles
Increasing Sensitivity
If you are measuring DC or low-frequency
AC signals of very small amplitudes, you can
increase measurement sensitivity of your
Current Probe by doing the following:
1. Wind several turns of the conductor under
test around the probe as shown. The
signal is multiplied by the number of turns
around the probe.
2. To obtain the actual current value, divide
the displayed amplitude by the number of
turns.
For example, if a conductor is wrapped around
the probe three times and the oscilloscope
shows a reading of 3 mA DC, the actual current
flow is 3 mA divided by 3, or 1 mA DC.
NOTE. Winding more turns around the probe increases the insertion impedance and reduces the upper bandwidth limit of the probe.
32
TCP0030 Current Probe Instruction Manual
Probing Principles
Common Mode Noise/Magnetic Field Errors
Common-mode noise at high frequencies and
strong magnetic fields on the supply side of
your circuit can cause measurement errors. To
avoid this:
1. Measure on the low or ground side of your
circuit.
2. Orient the probe to measure conventional
current flow.
TCP0030 Current Probe Instruction Manual
33
Probing Principles
AC and DC Coupling
You can couple the signal input to the oscilloscope with either DC or AC coupling. DC coupling shows both the DC and AC
measurement components. AC coupling removes the DC component from the displayed signal.
1. This low-frequency square wave is
displayed using AC coupling. The signal
exhibits low-frequency rolloff.
2. Press the DC Coupling button to display
the waveform as truly square.
CAUTION. When you use AC coupling, make
sure that the input DC current does not exceed
the probe specifications.
34
TCP0030 Current Probe Instruction Manual
Probing Principles
Maximum Current Limits
Current probes have three maximum current ratings: pulsed, continuous, and Ampere-second product. Exceeding any of these
ratings can saturate the probe core, which magnetizes the core and causes measurement errors. Refer to the specifications for the
maximum current ratings of the probe. (See Table 2 on page 41.)
Maximum Pulsed Current (ImaxP) is the
maximum peak value of pulsed current the
probe can accurately measure, regardless
of how short (within bandwidth limitations)
the pulse duration is.
Maximum Continuous Current (ImaxC) is the
maximum current that can be continuously
measured at DC or at a specified AC
frequency. The maximum continuous
current value is derated with frequency;
as the frequency increases, the maximum
continuous current rating decreases.
TCP0030 Current Probe Instruction Manual
35
Probing Principles
Ampere-Second Product is the maximum
width of pulsed current that you can
measure when the pulse amplitude is
between the maximum continuous and
maximum pulsed current specifications.
The maximum continuous specification
varies by frequency.
To determine if your measurement exceeds
the Ampere-second product, you must first
determine the maximum allowable pulse width
or maximum allowable pulse amplitude, as
described in the following section.
NOTE. Always degauss the probe after measuring a current that exceeds the maximum continuous current, maximum pulsed
current, or Ampere-second product rating of the probe. Exceeding these ratings can magnetize the probe and cause measurement
errors.
36
TCP0030 Current Probe Instruction Manual
Probing Principles
Maximum Allowable Pulse Width
To determine the maximum allowable pulse
width do the following:
1. Measure the peak current of the pulse.
2. Divide the Ampere-second (or
Ampere-microsecond) specification
for the range setting of the TCP0030 probe
by the measured peak current of the pulse:
The quotient is the maximum allowable
pulse width (PWmax).
3. Check that the pulse width at the 50% point
of the measured signal is less than the
calculated maximum allowable pulse width
(PWmax).
TCP0030 Current Probe Instruction Manual
37
Probing Principles
Maximum Allowable Pulse Amplitude
To determine the maximum allowable pulse
amplitude do the following:
1. Measure the pulse width at the 50% points.
2. Divide the Ampere-second (or
Ampere-microsecond) specification
for the range setting of the TCP0030 probe
by the pulse width.
The quotient is the maximum allowable
pulse amplitude; the peak amplitude of the
measured pulse must be less than this
value.
For example, the TCP0030 probe has a
maximum Ampere-second product of 500 A-ms
in the 30 A range setting. If a pulse measured
with the probe has a width of 11 ms, the
maximum allowable peak current would be
500 A-ms divided by 11 ms, or 45.5 A.
38
TCP0030 Current Probe Instruction Manual
Specifications
Specifications
The specifications in Tables 1 through 5 are valid under the following conditions:
The probe has been calibrated at an ambient temperature of 23 °C ±5 °C.
The probe is connected to a host instrument with an input impedance of 1 M Ω.
The probe must have a warm-up period of at least 20 minutes and be in an environment that does not exceed the limits
described. (See Table 1).
Specifications for the TCP0030 current probe fall into three categories: warranted, typical, and nominal characteristics.
TCP0030 Current Probe Instruction Manual
39
Specifications
Warranted Characteristics
Warranted characteristics describe guaranteed performance within tolerance limits or certain type-tested requirements. Warranted
characteristics that have checks in the Performance Verification section are marked with the
symbol.
Table 1: Warranted electrical characteristics
Characteristic
40
Description
DC gain accuracy
<3% (typical <1% at +23 °C, ± 5 °C)
Rise time (10% to 90%)
≤2.92 ns
Bandwidth
DC to 120 MHz
TCP0030 Current Probe Instruction Manual
Specifications
Typical Characteristics
Typical characteristics describe typical but not guaranteed performance.
Table 2: Typical electrical characteristics
Characteristic
Description
Maximum continuous current — DC and
Low frequency (See Figure 3.)
5 A Range: 5 A RMS
30 A Range: 30 A RMS
Maximum peak current (See Figure 3.)
50 A maximum peak pulse
Displayed RMS Noise
≤75 µA RMS. (Limit measurement bandwidth to 20 MHz)
Insertion impedance
(See Figure 2.)
Aberrations
<50 ns: ≤10% p-p >50 ns: ≤5% p-p
Signal delay
~14.5 ns
Maximum voltage on bare wire
Use on insulated conductors only
Maximum Amp·Second product (See
graph on page 49.)
5 A Range: 50 A·µs
30 A Range: 500 A·µs
TCP0030 Current Probe Instruction Manual
41
Specifications
Figure 1: Frequency derating (peak current versus frequency)
42
TCP0030 Current Probe Instruction Manual
Specifications
Figure 2: Typical differential input impedance versus frequency
TCP0030 Current Probe Instruction Manual
43
Specifications
Figure 3: Maximum peak pulse versus pulse width
44
TCP0030 Current Probe Instruction Manual
Specifications
Table 3: Environmental characteristics
Characteristic
Description
Temperature
Operating: 0 to +50 °C (+32 to +122 °F)
Nonoperating: -40 to +75 °C (-40 to +167 °F)
Humidity
Operating: 5-95% RH, tested up to +30 °C (+86 °F)
5-85% RH, tested at +30 °C to +50 °C (+86 °F to +122 °F)
Nonoperating: 5-95% RH, tested up to +30 °C (+86 °F)
5-85% RH, tested at +30 °C to +75 °C (+86 °F to +167 °F)
Altitude
Operating: Up to 3000 meters (10,000 feet),
Nonoperating: Up to 12,192 meters (40,000 feet)
Table 4: Typical mechanical characteristics
Characteristic
Description
Dimensions, compensation box
107 mm × 41 mm × 26 mm (4.2 in × 1.6 in × 1.0 in)
Dimensions, probe head
197 mm × 1.6 cm × 3.2 cm (7.77 in × 0.625 in × 1.25 in)
Dimensions, cable length
2 m (79 in) (from the probe head to the compensation box)
Unit weight
1.550 g (3.44 lbs) (probe, accessories, and packaging)
TCP0030 Current Probe Instruction Manual
45
Specifications
46
TCP0030 Current Probe Instruction Manual
Specifications
Nominal Characteristics
Nominal characteristics describe guaranteed traits, but the traits do not have tolerance limits.
Table 5: Nominal electrical characteristics
Characteristic
Description
Input coupling
DC
Current ranges
5 A and 30 A
Termination
Terminate output into 1 M Ω
Compatibility
Oscilloscopes equipped with the TekVPI interface
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 73/23/EEC, amended by 93/68/EEC.
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.
TCP0030 Current Probe Instruction Manual
47
Specifications
U.S. Nationally Recognized Testing Laboratory Listing
UL 61010B-1:2003. Standard for electrical measuring and test equipment.
UL 6010B-2-032:2003. Particular requirements for handheld current clamps for electrical measurement and test equipment.
Canadian Certification
CAN/CSA C22.2 No. 1010.1:1997. Particular requirements for electrical equipment for measurement, control, and laboratory
use. Part 1.
CAN/CSA C22.2 No. 1010.2.032-96, Particular Requirements for Hand Held Current Clamps for Electrical Measurement
and Test.
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.
48
TCP0030 Current Probe Instruction Manual
Specifications
Equipment Type
Test and measuring equipment.
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.
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.
TCP0030 Current Probe Instruction Manual
49
Performance Verification
Performance Verification
The procedures that follow verify the warranted specifications of the probe, listed below. The recommended calibration interval is
one year.
DC gain accuracy
Rise time
Bandwidth
Perform the following verification procedures in the order listed.
50
TCP0030 Current Probe Instruction Manual
Performance Verification
Equipment Required
Table 6 lists the equipment required for the performance verification procedure.
Table 6: Test equipment
Description and quantity
Performance requirement
Recommended example 1
Oscilloscope
TekVPI interface, 500 MHz or greater bandwidth
Tektronix DPO4000
High Amplitude Pulse
Generator
Risetime <500 ps, pulse width >100 ns, amplitude
>10 Vpp into 50 Ω
Picosecond Labs 2600
Calibrator
DCV: 0.2% accuracy, 0 to ±1.5 V, square wave output
ACA: 0.25% accuracy, 0 to ±6 A, square wave output
Wavetek 9100
DC Current loop
5 turns 18 AWG coated wire on 3 inch form
See instructions that follow
HF Current loop
50 Ω ±0.5%, BNC male
015-0601-50
103-0090-00
BNC-to-Dual banana adapter
BNC Cable
1
50 Ω , 0.76 m (30 in) length
012-0117-00
Nine-digit part numbers (xxx-xxxx-xx) are Tektronix part numbers.
TCP0030 Current Probe Instruction Manual
51
Performance Verification
Making the DC Current Loop
Construct the loop using #18 coated wire and a cylindrical form approximately 3 inches in diameter:
1. Wind exactly 5 turns of #18 coated wire
around the form.
2. Scrape about a half-inch of coating off of
the ends of the wire.
NOTE. Ensure that the current loop has exactly 5 turns. A significant error will result for each turn variance from 5 turns.
52
TCP0030 Current Probe Instruction Manual
Performance Verification
Equipment Setup
Use the following procedure to set up and warm up the equipment to test the probe.
1. Turn on the oscilloscope.
2. Connect the probe to any channel of the
oscilloscope.
3. Press the Degauss/Autozero button.
4. Set the oscilloscope coupling to DC.
5. Power on the current source and the pulse
generator.
6. Allow 20 minutes for the equipment to
warm up.
7. Photocopy the test record and use it to
record the test results. (See page 62.)
TCP0030 Current Probe Instruction Manual
53
Performance Verification
DC Gain Accuracy
This test checks the DC gain accuracy of the probe by first measuring the DC gain accuracy of the oscilloscope and then subtracting
that value from the probe gain accuracy measurement. If the measurements are out of the specified limits in the test record,
refer to the Adjustments section. (See page 63.)
54
TCP0030 Current Probe Instruction Manual
Performance Verification
Measure the Oscilloscope Gain
1. Connect a BNC-to-Dual Banana adapter
to the voltage output terminals of the
calibrator.
2. Connect a BNC cable between the adapter
and the oscilloscope. (Leave the probe
connected to keep it warmed up.)
3. Set the oscilloscope:
Vertical sensitivity to 500 mV/div
Vertical position and offset to 0.0 V
Horizontal to 400 or 500 us/div, trigger
50%
Acquisition mode to average 16
Input to 1 M Ω and coupling to DC
Automeasurement to display
AMPLITUDE
TCP0030 Current Probe Instruction Manual
55
Performance Verification
4. Set the calibrator to 1.5 Vpk (3.0 Vp-p)
@500 Hz squarewave.
5. Enable the output of the calibrator.
6. Measure the output amplitude (a).
7. Calculate the oscilloscope DC gain
accuracy (b) using the measured amplitude
value from step 6 and the formula shown.
Use the result to calculate the probe DC
gain accuracy in step 19.
Example:
8. Disable the calibrator output.
9. Remove the BNC cable from the test setup.
56
TCP0030 Current Probe Instruction Manual
Performance Verification
Measure the Probe Gain
10. Connect the probe to the oscilloscope
channel you used in the previous test.
11. Connect the 5-turn DC current loop to the
calibrator.
12. Set the calibrator to AC Amps.
13. Degauss the probe, and then connect it to
the 5-turn current loop.
14. Set the probe range to 5 A.
15. Set the oscilloscope:
Vertical sensitivity to 500 mA/div
Trigger at 50%
Acquisition mode to average 16
Coupling to DC
Automeasurement to display
AMPLITUDE
TCP0030 Current Probe Instruction Manual
57
Performance Verification
16. Set the calibrator to output a 500 Hz square
wave into the 5-turn current loop.
17. Set the calibrator to the first value in the
Test Record, and enable the output.
18. Measure the waveform amplitude (c).
19. Use the measured waveform amplitude (c)
from step 18 and the oscilloscope DC gain
accuracy value (b) from step 7 to calculate
the probe DC gain accuracy (d).
20. Record the calculated probe DC gain
accuracy value (d) in the test record.
5 A Range:
Example:
21. Set the probe range to 30 A.
22. Set the oscilloscope to 5 A/div.
23. Measure the waveform amplitude (e).
58
TCP0030 Current Probe Instruction Manual
Performance Verification
24. Use the measured waveform amplitude (e)
from step 23 and the oscilloscope DC gain
accuracy value (b) from step 7 to calculate
the probe DC gain accuracy (f).
30 A Range:
25. Record the calculated probe DC gain
accuracy value (f) in the test record.
Rise Time and Bandwidth
This procedure verifies that the probe meets the rise time specification on both of the current ranges. The bandwidth of the
probe is then calculated using the measured probe rise time.
TCP0030 Current Probe Instruction Manual
59
Performance Verification
1. Connect the BNC cable to the output of the
pulse generator.
2. Connect the other end of the BNC cable to
the HF current loop.
3. Set the pulse generator output and pulse
width to maximum.
4. Set the oscilloscope:
Vertical sensitivity to 200 mA/div
Horizontal to 2 ns/div
Trigger at 50%
Averaging on (32)
Coupling to DC
Automeasurement to Rise Time
5. Set the probe range to the 5 A setting.
6. Degauss the probe.
60
TCP0030 Current Probe Instruction Manual
Performance Verification
7. Clamp the current probe around the HF
current loop. Verify that the arrow-shaped
indicator on the probe points away from the
pulse generator.
8. Record the rise time measurement in the
Test Record.
9. Calculate the probe bandwidth using the
measured rise time in the following formula:
10. Record the calculated bandwidth value in
the test record.
TCP0030 Current Probe Instruction Manual
61
Performance Verification
Test Record
Probe Model/Serial Number:
Temperature:
Date of Calibration:
62
Certificate Number:
RH %:
Technician:
Incoming
Maximum
Performance
test
Range
Test
Current
Calibrator
squarewave
output
Expected
output
Minimum
DC Gain
Accuracy
5A
±1.5 A
0.3 Apk
3 Ap-p
-3%
+3%
30 A
±15 A
3.0 Apk
30 Ap-p
-3%
+3%
Outgoing
Rise time
5A
~1 A
< 500 ps
<2.92 ns
NA
2.92 ns
Bandwidth
5A
NA
NA
>120 MHz
120 MHz
NA
TCP0030 Current Probe Instruction Manual
Adjustments
Adjustments
The procedures that follow describe adjustments to the probe to bring the performance within the warranted specifications.
DC gain accuracy
Equipment Required
Refer to the Performance Verification procedure for the equipment required. You also need an insulated, flat-bladed adjustment tool.
Equipment Setup
Refer to the Performance Verification procedure for the equipment setup.
CAUTION. To avoid ESD damage to the probe, use an antistatic wrist strap and work at a static-approved workstation when
handling the probe
TCP0030 Current Probe Instruction Manual
63
Adjustments
DC Gain Accuracy
This procedure describes the DC gain accuracy adjustments for the probe at the 5 A and 30 A range settings.
Adjust the 5 A Range
1. Complete steps 1 through 18 of the DC
Gain Accuracy Test in the Performance
Verification procedure. (See page 54, DC
Gain Accuracy.)
2. Calculate the waveform target value (g)
using the calculated oscilloscope gain
accuracy value (b) from step 7 of the
performance test, and the formula shown.
3. Adjust the 5 A DC gain control in the probe
compensation box to the calculated target
value from step 2, ±0.02A.
64
TCP0030 Current Probe Instruction Manual
Adjustments
Adjust the 30 A Range
4. Set the probe range to 30 A.
5. Set the calibrator output to 3.0 A.
6. Set the oscilloscope to 5 A/div.
7. Measure the output amplitude.
8. Calculate the waveform target value (h)
using the calculated oscilloscope gain
accuracy value (b) from step 7 of the
performance test, and the formula shown.
9. Adjust the 30 A DC gain control in the
probe compensation box to the calculated
target value from step 8, ±0.2A.
10. Disconnect the probe from the current
source.
TCP0030 Current Probe Instruction Manual
65
Maintenance
Maintenance
This section contains maintenance information for your probe.
Troubleshooting
The TCP0030 current probe is designed to work with all TekVPI-interface oscilloscopes and adapters. The LEDs on the probe alert
you to error or status conditions affecting the probe. If the probe LEDs do not light as expected, or if some of the probe features do
not work properly, an error condition may exist. See the following table.
Table 7: Probe troubleshooting
Symptom
Possible cause
LEDs on the probe do not light.
The oscilloscope channel may be bad:
Try another channel or another oscilloscope. If the probe still does not work, the probe
is defective, and must be returned to Tektronix for repair.
An error message displays on
the oscilloscope.
66
The message will describe the cause and solution. For example, if the Degauss Needed
message appears, perform the degauss procedure.
TCP0030 Current Probe Instruction Manual
Maintenance
Cleaning
Protect the probe from adverse weather conditions. The probe is not waterproof.
CAUTION. To prevent damage to the probe, do not expose it to sprays, liquids, or solvents. Avoid getting moisture inside
the probe during exterior cleaning.
Do not use chemical cleaning agents; they may damage the probe. Avoid using chemicals that contain benzine, benzene,
toluene, xylene, acetone, or similar solvents.
Clean the exterior surfaces of the probe with a dry, lint-free cloth or a soft-bristle brush. If dirt remains, use a soft cloth or swab
dampened with a 75% isopropyl alcohol solution and rinse with deionized water. A swab is useful for cleaning narrow spaces on the
probe, use only enough solution to dampen the swab or cloth. Do not use abrasive compounds on any part of the probe.
TCP0030 Current Probe Instruction Manual
67
Maintenance
Repairing the Probe
The subassemblies listed below can be replaced on the probe. The replacement procedures are on the following pages.
Replaceable component
Procedures to use
Transformer
Probe Head Disassembly, Transformer Replacement
Cable/Circuit Board Assembly
Probe Head Disassembly, Cable/Circuit Board Assembly Replacement,
Compensation Box Replacement
Compensation Box
Compensation Box Replacement
Switch Panel
Compensation Box Replacement
Equipment Required
The following equipment is necessary to perform the repair procedures.
Tool
Description
Screwdriver
#2 Phillips
Soldering iron
25 W
Cleaner
Isopropyl alcohol
Lubricant
Compensation box
1
68
Silicone-based grease
separator 1
Order Tektronix part number 003-1892-00 (See page 24, Compensation Box Tool.)
Required for cable, switch panel, and compensation box replacement procedures
TCP0030 Current Probe Instruction Manual
Maintenance
Probe Head Disassembly
Disassemble the probe head as follows:
1. Remove the two screws from the bottom
of the probe.
2. Pull the strain relief boot back.
NOTE. The probe slide contains a tiny metal
ball. In step 3, be careful not to lose the ball by
accidentally letting it fall out.
3. Move the probe slide assembly to the open
position. (See note above).
TCP0030 Current Probe Instruction Manual
69
Maintenance
4. Hold the bottom half of the probe with one
hand.
5. With your other hand, pivot the rear top
half of the probe body up.
6. Slide the top half forward and off of the
bottom half of the probe body.
7. Remove the metal ball.
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TCP0030 Current Probe Instruction Manual
Maintenance
8. Turn the probe upside down, push the slide
back slightly, and remove the slide.
You now have access to the transformer and
cable/circuit board assembly. Use the following
procedures to replace these components.
TCP0030 Current Probe Instruction Manual
71
Maintenance
Replacement
Transformer
To replace the transformer, do the following:
1. Gently lift the front edge of the circuit board
and transformer enough to clear the probe
body.
2. Pull the transformer socket straight off the
circuit board pins.
3. Align the socket of the new transformer to
the circuit board pins and connect them.
4. Seat the components back in the probe.
72
TCP0030 Current Probe Instruction Manual
Maintenance
Cable/Circuit Board Assembly
To replace the cable/circuit board assembly, do
the following:
1. Remove the transformer as described in
the previous procedure. (See page 72,
Transformer.)
2. Lift the plastic cable housing from the
probe body half.
3. Unsolder the probe body connection on
the circuit board. Be careful not to damage
the circuit board.
4. Lift the circuit board/cable assembly from
the probe body half.
5. Proceed to the Compensation Box
procedure to detach the cable from the
compensation box. (See page 74.)
6. To reassemble the probe after replacing
the cable, do steps 1 through 5 of this
procedure in reverse. (See following
Caution statement.)
TCP0030 Current Probe Instruction Manual
73
Maintenance
CAUTION. To avoid damaging the wires inside the probe, carefully dress the wires in the lower body half to avoid contact with the
slide assembly. Exercise care when fitting the slide back into the probe body; aligning the switch contacts requires precision.
Compensation Box
1. Insert the separator tool into the four
holes to disengage the front and back
compensation box sections from each
other.
2. Grasp the tool and front section together
with one hand. Hold the back section with
the other hand and gently pull the two
sections apart.
3. Pull the cable grommet away from the back
section of the compensation box.
74
TCP0030 Current Probe Instruction Manual
Maintenance
4. Separate the two halves of the
compensation box enclosure.
5. Remove the metal shield from the main
assembly.
6. If you are only replacing the switch panel,
disconnect the panel, replace it, and
reassemble the compensation box.
7. If you are replacing the cable or
compensation box, disconnect the cable
connector.
8. Install the new cable or compensation box
by performing this procedure in reverse. If
you are replacing the cable, refer also to the
Cable/Circuit Board Assembly procedure
to complete the cable replacement.
TCP0030 Current Probe Instruction Manual
75
Maintenance
Reassembly
1. Before reassembling the probe body, be sure to check:
a. That the gap between the stationary and moveable core pieces is clean. If necessary, use isopropyl alcohol or a similar
cleaning agent to clean the pieces.
b. That the contacts of the slide switch are clean, and if not, clean them.
c. If the plastic slide assembly requires lubrication. If so, apply silicone-based grease sparingly to the parts.
2. Reassemble the probe body by following steps 1 through 8 of the probe head disassembly procedure in reverse. (See
page 69, Probe Head Disassembly.)
NOTE. Exercise care when fitting the slide back into the probe body; aligning the switch contacts requires precision.
If the slider does not work smoothly after tightening the two screws, loosen the screws slightly.
76
TCP0030 Current Probe Instruction Manual
Maintenance
Replaceable Parts
This section contains a list of the replaceable parts for the probe. Use this list to identify and order replacement parts.
Parts Ordering Information
Replacement parts are available through your local Tektronix field office or representative.
Changes to Tektronix instruments are sometimes made to accommodate improved components as they become available and
to give you the benefit of the latest circuit improvements. Therefore, when ordering parts, it is important to include the following
information in your order:
Part number
Instrument type or model number
Instrument serial number
Instrument modification number, if applicable
TCP0030 Current Probe Instruction Manual
77
Maintenance
Using the Replaceable Parts List
This section contains a list of the mechanical and/or electrical components that are replaceable for the probe. Use this list to identify
and order replacement parts. Table 8 describes each column in the parts list.
Table 8: Parts List Column Descriptions
Column
Column name
Description
1
Figure & Index Number
Items in this section are referenced by figure and index numbers to the
exploded view illustrations that follow.
2
Tektronix Part Number
Use this part number when ordering replacement parts from Tektronix.
3 and 4
Serial Number
Column three indicates the serial number at which the part was first effective.
Column four indicates the serial number at which the part was discontinued.
No entries indicates the part is good for all serial numbers.
5
Qty
This indicates the quantity of parts used.
6
Name & Description
An item name is separated from the description by a colon (:). Because of
space limitations, an item name may sometimes appear as incomplete. Use
the U.S. Federal Catalog handbook H6-1 for further item name identification.
7
Mfr. Code
This indicates the code of the actual manufacturer of the part.
8
Mfr. Part Number
This indicates the actual manufacturer or vendor part number.
Abbreviations
Abbreviations conform to American National Standard ANSI Y1.1-1972.
78
TCP0030 Current Probe Instruction Manual
Maintenance
Figure 4: Replaceable Parts
TCP0030 Current Probe Instruction Manual
79
Maintenance
Table 9: Replaceable Parts
Fig. &
Index
Number
80
Tektronix Part
Number
Qty
Name & Description
Mfr.
Code
Mfr. Part
Number
4-1
204-0288-03
1
BODY HALF,PROBE:UPPER
80009
204-0288-03
-2
214-0835-00
1
SPRING,HLCPS:0.127 OD X 2.65 L,SST
91260
ORDER BY
DESCRIPTION
-3
214-0849-00
1
RTNR RETURN SPR:BRS CD PL
80009
214-0849-00
-4
352-0106-00
1
HOLDER,SPR RTNR:DELRIN
TK2565
352-0106-00
-5
213-0087-00
2
SCREW,TPG,TC:2-32 X 0.5,TYPE
BT,PANHEAD,STEEL,CADMIUM
PLATED,POZIDRIVE
3M099
ORDER BY
DESCRIPTION
-6
335-1357-00
1
MARKER, ID:PROBE ID
0KB05
335-1357-00
-7
204-0714-06
1
BODY,HALF:LOWER BODY HALF
W/CONTACTS
80009
204-0714-06
-8
120-2081-00
1
XFMR SUBASSY:UPPER & LOWER
TRANSFORMER
80009
120-2081-00
-9
214-0854-00
1
CONTACT,ELEC:UPPER SHELF,CU BE
TK1947
214-0854-00
-10
351-0121-04
1
CONT ASSY,ELEC:PROBE SLIDE ASSY
80009
351-0121-04
TCP0030 Current Probe Instruction Manual
Maintenance
Table 9: Replaceable Parts (cont.)
Fig. &
Index
Number
Tektronix Part
Number
Qty
Name & Description
Mfr.
Code
Mfr. Part
Number
-11
214-0997-00
1
BALL,BEARING:0.094,SST
05469
ORDER BY
DESCRIPTION
-12
174-5327-00
1
BD/CABLE ASSY:CABLE W/PROBE
CIRCUIT BOARD
80009
174-5327-00
-13
260-2810-00
1
MEMBRANE SWITCH/CIRCUIT BOARD
ASSY
80009
260-2810-00
-14
206-0564-00
1
COMPENSATION BOX ASSY
00009
206-0564-00
Table 10: Part Manufacturers
Mfr. Code
Manufacturer
Address
City, State, Zip Code
05469
BEARINGS INC
3634 EUCLID PO BOX 6925
CLEVELAND, OH 44101
0KB05
NORTH STAR
NAMEPLATE INC
5750 NE MOORE COURT
HILLSBORO, OR
97124-6474
18359
PYLON CO. INC.
51 NEWCOMB ST
ATTLEBORO, MA
02703-1403
3M099
PORTLAND SCREW
COMPANY
6520 N BASIN AVE
PORTLAND, OR 97217
TCP0030 Current Probe Instruction Manual
81
Maintenance
Table 10: Part Manufacturers (cont.)
82
Mfr. Code
Manufacturer
Address
City, State, Zip Code
80009
TEKTRONIX INC
14150 SW KARL BRAUN DR PO BOX 500
BEAVERTON, OR
97077-0001
91260
CONNOR FORMED
METAL PRODUCTS
1729 JUNCTION AVENUE
SAN JOSE, CA 95112
TK1947
NORTHWEST ETCH
TECHNOLOGY
2601 S HOOD ST PO BOX 110610
TACOMA, WA
98411-0610
TK2548
XEROX
CORPORATION
DIV OF XEROX CORPORATION 7431
EVERGREEN PARKWAY
HILLSBORO, OR 97124
TK2565
VISION PLASTICS
INC
26000 SW PARKWAY CENTER DRIVE
WILSONVILLE, OR
97070
TCP0030 Current Probe Instruction Manual
Index
Index
A
D
AC coupling, 34
Accessories
optional, 22
standard, 19
Adjustments, 63
Amp-second product, 36
Damage
ESD, 2
DC coupling, 34
DC Gain Accuracy
Adjustment, 64
DC LEVEL control, 34
Degaussing, 3
while connected to a
conductor, 26
Differential current, 27
Documentation, x
B
Bucking current, 30
C
Cleaning, 67
Common mode noise, 33
Connect the probe, 2
Coupling modes, 34
Current limitations
amp-second product, 36
maximum continuous, 35
maximum pulsed, 35
Current loop, 52
E
Equipment required
performance verification, 51
Equipment setup, 53
ESD damage, 2
Extending the current range of the
probes, 29
F
Features, 1
TCP0030 Current Probe Instruction Manual
Frequency derating, 35
G
Gain accuracy check, 54
I
Increasing bucking current, 30
Increasing probe sensitivity, 32
Indicators, 5
J
Jaw damage, 10
L
LEDs,flashing, 66
M
Magnetic field errors, 33
Maintenance, 66
Maximum allowable pulse
amplitude, 38
83
Index
Maximum allowable pulse width, 37
Maximum continuous current
rating, 35
Maximum pulsed current rating, 35
Measuring current
current nulls, 27
differential current, 27
Replacing
cable/circuit board assy, 72
compensation box, 74
transformer, 72
Rise time check, 59
Null current, 27
Probe
disassembly, 69
reassembly, 76
repairing, 68
Probe controls and indicators, 5
Probes
coupling, 34
extending the current range, 29
increasing the current limit, 29
maximum current limits, 35
saturation, 35
O
R
Safety Summary, v
Service options, 25
Specifications, 39
nominal, 47
typical, 41
warranted, 40
Record, test, 62
Related documentation, x
Replaceable parts, 77
T
N
Options, 25
P
S
Performance verification, 50
TekVPI, 2
Test record, 62
Troubleshooting, 66
84
TCP0030 Current Probe Instruction Manual
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