Tektronix TCP202 User manual

xx

TCP202

15 Ampere AC/DC Current Probe

ZZZ

Instruction Manual

*P070954203*

070-9542-03

TCP202

15 Ampere AC/DC Current Probe

ZZZ

Instruction Manual

xx

www.tektronix.com

070-9542-03

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

Beaverto

n, 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 n

ew or reconditioned to like new performance. All replaced parts, modules and products become

the property of Tektronix.

In order to o

btain service under this warranty, Customer must notify Tektronix of the defect before the expiration of

the warranty period and make suitable a rrangements 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

result

ing 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.

TEK

TRONIX’ 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

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

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

Compliance Information......................................................................................... vii

Safety Compliance........................................................................................... vii

Environmental Considerations .............................................................................. ix

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

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

Connecting the Probe to the Oscilloscope ..... ................ ...... ................ ...................... . 3

Compensating the Probe (Optional) ......................................................................... 4

Operating Basics.................................................................................................... 5

Measurement Limits........................................................................................... 5

Degaussing and Balancing the Probe........................................................................ 5

Measurement Procedures and Techniques .................................................................. 6

Reference ........................................................................................................... 13

Power Measurements......................................................................................... 13

Inductance Measurements ................................................................................... 14

Continuity Test of Multiple-Conductor Cable . .............................................. .............. 16

Speciﬁcations ...................................................................................................... 17

Warranted Characteristics.................................................................................... 17

Typical Characteristics ....................................................................................... 19

Nominal Characteristics...................................................................................... 22

Maintenance........................................................................................................ 23

Cleaning the Probe Head..................................................................................... 23

Servicing the Compensation Box ........................................................................... 23

Probe Head Disassembly..................................................................................... 30

Obtaining Replacemen

t Parts................................................................................ 34

Preparation for Shipment .................................................................................... 34

Performance Veriﬁcation and Adjustment ...................................................................... 35

Test Procedure Conditions ............................... .................. .................. ................ 35

Equipment Required.......................................................................................... 36

DC Accuracy .................................................................................................. 36

Bandwidth ..................................................................................................... 37

Rise Time ...................................................................................................... 37

Calibrator Accuracy (Optional) ............................................................................. 38

Replaceable Parts.................................................................................................. 39

Parts Ordering Information .................................................................................. 39

Using the Replaceable Parts List............................................................................ 40

TCP202 Instruction Manual i

Table of Contents

List of Figure

s

Figure 1: TCP202 Current Probe ................................................................................. 1

Figure 2: Co

arse Balance Adjustment ........................................................................... 4

Figure 3: Connecting the Calibrator.............................................................................. 4

Figure 4: Polarity of Current Flow ............................................................................... 8

Figure 5: Measuring Differential Current and Nulls............................................................ 8

Figure 6: Increasing the DC Measurement Range............................................................. 10

Figure 7: Increasing Probe Sensitivity ...... ...................... .................. ............................ 11

Figure 8:

Measuring Inductance with a Low-Impedance Source ............................................ 14

Figure 9: Linear Current versus Time Ramp ................................................................... 15

Figure 10: Measuring Inductance with a High-Impedance Source .......................................... 15

Figure 11: High-Impedance Source Current Ramp............................................................ 16

Figure 12: Frequency Derating .................................................................................. 19

Figure 13: Insertion Impedance - Magnitude - Single Conductor............................................ 20

Figur

e 14: Insertion Impedance - Phase Angle - Single Conductor ......................................... 20

Figure 15: Insertion Impedance - Magnitude - 10-Turn #24 AWG Primary................................ 20

Figure 16: Insertion Impedance - Phase Angle - 10-Turn #24 AWG Primary.............................. 21

Figure 17: Current Ratings ....................................................................................... 21

Figure 18: Replacing TekProbe Interface Pins ................................................................. 25

Figure 19: Replacing the TekProbe collar ...................................................................... 26

Fi

gure 20: Removing the Compensation Box Covers......................................................... 27

Figure 21: Accessing the Gain Adjustment..................................................................... 28

Figure 22: Replacing the Compensation Box Cover .......................................................... 29

Figure 23: Removing the Strain Relief Boot ................................................................... 30

Figure 24: Removing the Top Half of the Probe............................................................... 31

Figure 25: Removing the Probe Slide........................................................................... 32

Figure 26: Removing the Current Transformer ................................................................ 33

Figure 27: TCP202 and Replaceable Parts and Accessories.................................................. 40

Figure 28: Replaceable Parts - Compensation Box............................................................ 42

Figure 29: TCP202 Optional Accessories ...................................................................... 42

ii TCP202 Instruction M anual

Table of Contents

List of Tables

Table 1: Warranted Electrical Characteristics .................................................................. 17

Table 2: Typ

ical Electrical Characteristics ..................................................................... 19

Table 3: Nominal Characteristics ................................................................................ 22

Table 4: List of Equipment Required............................................................................ 36

Table 5: Parts List Column Descriptions ....................................................................... 40

Table 6: TCP202 Replaceable Parts and Accessories ......................................................... 40

Table 7: Replaceable Parts - Compensation Box .............................................................. 42

Table 8: O

ptional Accessories ................................................................................... 42

TCP202 Instruction Manual iii

General Safety Summary

General Safet

ySummary

Review the fo

llowing safety precautions to avoid i njury a nd prevent da mage to

this product or any products connected to it.

To avoid pot

ential hazards, use this product only as speciﬁed.

Only qualiﬁed personnel should perform service procedures.

To Avoid Fi

re 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 D isconnect 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

cond

uctor 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.

Connect the probe reference lead to earth ground only.

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 d amage to this

product, have it inspected by qualiﬁed service personnel.

Avoid Exposed Circuitry. Do not touch exposed connections and components

when power is present.

Do Not Operate in Wet/Damp Conditions.

Do Not Operate in an Explosive Atmosphere.

Keep Product Surfaces Clean and Dry.

iv TCP202 Instruction M anual

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 in

dicates an injury hazard immediately accessible as you read

the marking.

WARN IN G

indicates an injury hazard not immediately accessible as you

read the marking.

CAUTIO

N indicates a hazard to property including the product.

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

TCP202 Instruction Manual v

Service Safety Summary

Service Safet

y Summary

Only qualiﬁe

d personnel should perform service procedures. Read this Service

Safety Summary and the General Safety Summary before performing a ny 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.

vi TCP202 Instruction Manual

Compliance Information

This section lists the safety and environmental standards with which the

instrument complies.

Safety Compliance

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.

Additional Complian ces

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

Test and measuring equipment.

Safety Class

Class1–groundedproduct.

Pollution D egree

Description

A measure of the contaminants 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.

Pollution D egree 1. No pollution or only dry, nonconductive pollution occurs.

Products in t his category are generally encapsulated, hermetically sealed, or

located in clean rooms.

Pollution 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.

Pollution 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.

TCP202 Instruction Manual vii

Compliance Information

Pollution Degr

ee 4. Pollution that generates persistent conductivity through

conductive dust, rain, or snow. Typical outdoor locations.

Pollution D egree

Pollution Degree 2 (as deﬁned in IEC 61010-1). Note: Rated for indoor use only.

viii TCP202 Instruction M anual

Compliance Information

Environmenta

l 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 resourc es, we encourage you to recycle this product

in an appropriate system that will ensure that most of the materials are reused or

recycled appropriately.

This sym

bol indicates that this product complies with the applicable European

Union requirements according to Directives 2002/96/EC and 2006/66/EC

on waste electrical and electronic equipment (WEEE) and batteries. For

informa

tion about recycling options, check the Support/Service section of the

Tektronix Web site (www.tektronix.com).

Restriction of Hazard ous

Substances

This product has been classiﬁed as Monitoring and Control equipment, and is

outside the scope of the 2002/95/EC RoHS Directive.

TCP202 Instruction Manual ix

Compliance Information

x TCP202 Instruction Manual

Getting Started

This section describes the TCP202 Current Probe and gives instructions on how to

install and functionally test the probe.

Features and Accessories

The TCP202 Current Probe is a 50 MHz current probe for u se with Tektronix

oscillosc

opes that have the TekProbe interface. (See Figure 1.) The probe can

measureupto15A(DC+peakAC).

Figure 1 : TCP202 Current Probe

TCP202 Instruction Manual 1

Getting Started

Item Description

Probe Head. Th

e probe head contains a H all Effect device for measuring current. The jaw

of the probe clamps on any wire (including insulation) that is less than or equal to 3.8 mm

(0.15 inches) in diameter.

TekProbe Interface. The TekProbe interface provides power, signal, and probe characteristic

data.

If your oscilloscope does not support the TekProbe interface, you can use the optional 1103

probe power supply as an effective interface. Contact your local Tektronix representative for

more inform ation.

Degauss. The degauss button removes residual magnetism from the probe core that would

otherwise cause measurement errors.

Balance Thumb wh eel. The balance thumbwheel compensates for minor DC offsets of the

probe output.

Coarse Balance Adjustment. The coarse balance adjustment centers the range of the balance

thumbwheel. U se this adjustment only if the thumbwheel does not have enough range.

WARNING. To avoid electric shock, do not adjust the coarse balance when connected to a

live conductor and only use the provided insulated adjustment tool for making the adjustment.

Calibrator (o

ptional). With some TDS oscilloscopes, you can compensate the probe for

maximum accuracy using the optional calibrator. Use the calibrator only if your oscilloscope

displays the AΩ symbol when the current probe is connected. (For ordering information, see

Replaceable P

arts). (See page 39.)

6-inch ground lead (optional). Use the 6-inch ground lead to ground the shield around the

probe transformer at the probe end of the cable. This allows you to move the ground connection

closer to the

circuit y ou are measuring, thereby improving high frequency response. The ground

lead clips onto the ground connector on the bottom of the probe.

2 TCP202 Instruction Manual

Getting Started

Connecting th

e Probe to the Oscilloscope

Install the TCP202 Current Probe as follows:

1. Set the input channel to a zero reference point.

2. Connect the output of the probe to the TekProbe interface of the oscilloscope

or other measurement instrument. The measurement instrument input must

have a ground reference.

WARNING. Toreduceriskofelectricshock,donotﬂoat the oscilloscope or

other meas

urement instrument (for example, an 1103 TekProbe Power Supply)

by removing or isolating the ground pin from the AC power cord. This probe

is intended for use with ground-referenced oscilloscopes and measurement

instruments.

NOTE. If your oscilloscope does not display amperes/division directly, the

volts/

division can be interpreted as amperes/division.

If you are using the 1103 TekProbe Power Supply, you must set the

oscilloscope input coupling to D C and the input impedance to 50 Ω. Interpret

V/div

ision a s 10 A/division. For example, interpret 100 mV/division as

1 A/division.

3. With

the probe jaw empty, push the slide o n the probe u ntil it locks in the

CLOSED position.

4. Pre

ss the DEGAUSS button.

5. Balance the probe as follows:

a. Set the oscilloscope vertical scale to 10 mA/division.

b. Open and close the probe jaw.

c. Adjust the BALANCE thumbwheel until the displayed signal is zero.

6. If you cannot zero the display as described in step 5 c, use the coarse balance

adjustment to center the range of the thumbwheel. (See Figure 2.)

WARNING. To avoid electric shock, do not adjust the coarse balance when

connected to a live conductor and only use the provided insulated adjustment

tool for making the adjustment.

TCP202 Instruction Manual 3

Getting Started

Figure 2: Coarse Balance Adjustment

Compensating the Probe (Optional)

With some TD

S oscilloscopes, you can compensate the probe for maximum

accuracy using the optional calibrator. Perform this procedure only if your

oscilloscope displays the AΩ symbol when you connect the probe output to the

oscilloscope input.

1. To connect the calibrator, press the release button and connect the calibrator

to the probe compensation output of the oscilloscope. (See Figure 3.)

Figure 3: Connecting the Calibrator

2. Close and lock the probe jaw over the calibrator loop.

3. Adjust the o scilloscope to display the signal.

4. Press VERTICAL MENU→Cal Probe→OK Compensate Gain.

If t

he probe passes the compensation routine, the probe is accurate to within ±1%

from 50 mA to 5 A, and within ±2% from 5 A to 15 A.

If

the probe fails the compensation routine, refer to the procedure for checking

the DC accuracy of the probe and the procedure for accessing the internal gain

adjustment. (Seepage36,DC Accuracy.) (See page 28, Accessing the Gain

Adjustment.)

Repeat this procedure whenever you move the current probe to another input.

4 TCP202 Instruction Manual

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