Tektronix TDS2PWR1, TPS2PWR1 User manual

User Manual

TPS2PWR1
Power Analysis Application

071-1452-01

www.tektronix.com

Copyright © Tektronix, Inc. All rights reserved. Licensed software products
are owned by Tektronix or its suppliers and are protected by United States
copyright laws and international treaty provisions.

Use, duplication, or disclosure by the Government is subject to restrictions as
set forth in subparagraph (c)(1)(ii) of the Rights in Technical Data and
Computer Software clause at DFARS 252.227-7013, or subparagraphs (c)(1)
and (2) of the Commercial Computer Software -- Restricted Rights clause at
FAR 52.227-19, as applicable.

Tektronix products are covered by U.S. and foreign patents, issued and
pending. Information in this publication supercedes that in all previously
published material. Specifications and price change privileges reserved.

Tektronix, Inc., P.O. Box 500, Beaverton, OR 97077

TEKTRONIX, TEK, and TEKPROBE are registered trademarks of
Tektronix, Inc.

WARRANTY

TPS2PWR1 Application

Tektronix warrants that the product listed above will be free from defects in materials and
workmanship for a period of one (1) year from the date of original purchase from an
authorized Tektronix distributor. 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. Batteries are
excluded from this warranty. 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, shipping charges prepaid and
with a copy of Customer proof of purchase. 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.

WARRANTY (Continued)

TPS2PWR1 Application

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

General Safety Summary iii............................

Contacting Tektronix vii................................

Getting Started

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

Basic Operation 1--2.....................................

Ratings 1--2............................................

Start Up 1--4...........................................

Checking Module Installation 1--8..........................

Troubleshooting Module Installation 1--9....................

Reference

Power Analysis 2--1.....................................

Waveform Analysis 2--9..................................

Phase Angles 2--15.......................................

Harmonics 2--21.........................................

Switching Loss 2--29......................................

dY/dt Measurements 2--41.................................

P5120 Specifications 2--43.................................

TPS2PWR1 Power Analysis User Manual

i

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

Use Proper Power Cord. Use only the power cord specified for this

product and certified for the country of use.

Connect and Disconnect Properly. Do not connect or disconnect probes

or test leads while they are connected to a voltage source.

Connect and Disconnect Properly. Connect the probe output to the

measurement instrument before connecting the probe to the circuit
under test. 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.

Use Proper Probe. To avoid shock hazard, use a properly rated probe

for your measurement.

ii

TPS2PWR1 Power Analysis User Manual

General Safety Summary

Floating. Do not float the P2220 probe reference lead to > 30 V

Use the P5120 (floatable to 600 V

CAT II or 300 V

RMS

RMS

RMS

CAT

.

III) or similarly rated, passive, high voltage probe or an appropriately
rated, high voltage differential probe when floating the reference
lead above 30 V

, subject to the ratings of such high voltage

RMS

probe.

Powering Off. The power cord provides Mains disconnect.

Replace Batteries Properly. Replace batteries only with the proper type

and rating specified.

Recharge Batteries Properly. Recharge batteries for the recommended

charge cycle only.

Use Proper AC Adapter. Use only the AC adapter specified for this

product.

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

covers or panels removed.

Avoid Exposed Circuitry. Do not touch exposed connections and

components when power is present.

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

to this product, have it inspected by qualified service personnel.

Environment. Pollution Degree 2 (As defined in IEC61010--1:2001).

Do not operate in an environment where conductive pollutants may
be present. See Appendix A of the TPS2000 Oscilloscope User
Manual for Environmental characteristics.

Do Not Operate in Wet/Damp Conditions.

Do Not Operate in an Explosive Atmosphere.

Keep Product Surfaces Clean and Dry.

TPS2PWR1 Power Analysis User Manual

iii

General Safety Summary

Provide Proper Ventilation. Refer to the manual’s installation

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

Avoid Electric Overload. To avoid injury or fire hazard, do not apply

potential to any input, including the reference inputs, that varies
from ground by more than the maximum rating for that input.

Avoid Exposed Circuitry. Do not touch exposed connections and

components when power is present.

Avoid Electric Shock. To avoid injury or loss of life, do not connect or

disconnect probes or test leads while they are connected to a voltage
source.

Keep Probe Surface Clean and Dry. To avoid electric shock and

erroneous readings, keep probe surface clean and dry.

Attached the Reference Leads Correctly. If you are using multiple

oscilloscope channels, you must attach the probe reference lead for
each channel directly to the circuit common reference that you are
measuring. These connections are required because the oscilloscope
channels are electrically isolated. They do not share a common
chassis connection. Use the shortest possible reference lead with
each probe to maintain good signal fidelity.

If Question Marks are Displayed. If a measurement display is followed

by a question mark, or a question mark is displayed instead of a
value, you have encountered an overrange condition or other error,
the reading may be invalid, and hazardous voltages may be present.
Readjust the vertical scale or position or press the front-panel
AUTOSET button.

iv

TPS2PWR1 Power Analysis User Manual

General Safety Summary

Symbols and Terms

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.

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.

Symbols on the Product. These symbols may appear on the product:

CAUTION

Refer to Manual

Standby

TPS2PWR1 Power Analysis User Manual

Chassis Ground

v

Contacting Tektronix

Phone [phone]*

Address Tektronix, Inc.

Department or name (if known)
14200 SW Karl Braun Drive
P.O. Box 500
Beaverton, OR 97077
USA

Web site www.tektronix.com

Sales
support

Service
support

Technical
support

* This phone number is toll free in North America. After office

hours, please leave a voice mail message.
Outside North America, contact a Tektronix sales office or
distributor; see the Tektronix web site for a list of offices.

vi

1-800-833-9200, select option 1*

1-800-833-9200, select option 2*

Email: [e-mail]

1-800-833-9200, select option 3*
1-503-627-2400

6:00 a.m. -- 5:00 p.m. Pacific time

TPS2PWR1 Power Analysis User Manual

Getting Started

Getting Started

The TPS2PWR1 Power Analysis application software adds power
measurements to a TPS2000 series oscilloscope.

Specific features include:

H Power Analysis -- Calculates the true power, reactive power,

power factor, and phase angle for a pair of voltage and current
waveforms.

H Waveform Analysis -- Calculates the RMS value, crest factor, and

frequency for a waveform.

H Phase Angles -- Calculates the phase angle between each pair of

three voltage or current waveforms.

H Harmonics -- Calculates up to 50 harmonics and can display each

harmonic’s phase angle with respect to the fundamental
frequency, its percent of the fundamental frequency, and the
THD/TDD value for the entire waveform.

H Switching Loss -- Calculates the turn-on switching loss, turn-off

switching loss, conduction loss, and total switch loss for a pair of
voltage and current waveforms.

H dV/dt and di/dt cursors -- Calculates dv/dt or di/dt between two

cursors on a waveform.

TPS2PWR1 Power Analysis User Manual

1-1

Getting Started

Basic Operation

See the TPS2000 User Manual, the P2220 Instructions, and the
P5120 Instructions for information on ratings and on basic
operations, including safety, installation, functional checks, probe
attenuation and scaling settings, and self calibration.

Ratings

TPS2000

The TPS2000 oscilloscopes are rated to 300 V CAT II signal to
common (IEC 61010) and 600 V CAT II floating reference to earth
ground reference.

P2220

The rating for the P2220 passive probe is:

1-2

X10 position: 300 V

X1 position: 150 V

CAT II probe tip to earth ground

RMS

CAT II probe tip to earth ground

RMS

The probe reference lead is rated to float 30 V max to earth ground.

P5120

The rating for the P5120 passive high voltage probe is:

1000 V

The probe reference lead is rated to float to 600 V

CAT II probe tip to earth ground.

RMS

RMS

CAT II to

earth ground.

TPS2PWR1 Power Analysis User Manual

Getting Started

Overvoltage categories

Overvoltage categories are defined as follows:

H CAT III: Distribution level mains, fixed installation

H CAT II: Local level mains, appliances, portable equipment

H CAT I: Signal level, special equipment or parts of equipment,

telecommunications, electronics

More complete product specifications are contained in the User
Manual for the TPS2000 and for the various probes.

TPS2PWR1 Power Analysis User Manual

1-3

Getting Started

Start Up

To install a TPS2PWR1 application module on your TPS2000 series
oscilloscope, follow these steps.

Observe ESD precautions.

To avoid damage to the oscilloscope
or the application module, observe
proper electrostatic discharge (ESD)
precautions. Use an ESD strap.

Insert the application key.

While the oscilloscope is turned off,
insert the power analysis applica­tion key in the indicated slot, below
and to the right of the display. The
key’s label should face up.

1-4

Power on the oscilloscope.

Wait until the display appears. Push
the side-menu OK button to conti­nue.

ON/Standby

button

TPS2PWR1 Power Analysis User Manual

Getting Started

Probe

Voltage

PROBE COMP

CH 1

10X

CH 1 Probe

Voltage
Current

Attenuation

10X

CH 1

Attach the probes to the oscilloscope
and set up the probes.

Press the appropriate front-panel
CH 1, CH 2, CH 3,orCH 4 Menu
buttons and the appropriate Voltage
or Current side menu selection and
the Attenuation side menu selec­tion.

Compensate the voltage probes.

For a P5120 probe, connect the
probe to channel 1 on the oscillo­scope. To do this, align the slot in
the probe connector with the key on
the CH 1 BNC, push to connect,
and twist to the right to lock the
probe in place.

Connect the probe tip and reference
lead to the PROBE COMP termi­nals. Repeat this process for each
probe.

TPS2PWR1 Power Analysis User Manual

Degauss current probes, if required.

1-5

Getting Started

For examples of probe connections
to circuits, refer to the Application
examples provided in the Reference
section of this manual.

If you see a question mark on the
screen, you might press the front­panel AUTOSET button or adjust
the oscilloscope as described below.

To optimize the automated mea­surements in the Power Analysis,
Waveform Analysis, and Phase
Angles menus, adjust the oscillo­scope so that:

S the TPS2000 displays at least one
complete cycle of the waveform

1-6

S the amplitude of each waveform is
more than two divisions

S all waveform data points are on
the screen

S each cycle occupies at least one
horizontal division

TPS2PWR1 Power Analysis User Manual

Getting Started

Start the application.

Push the front-panel APPLICA­TION button to access the power

application functions. The power
application menu will appear in the
oscilloscope’s right-side menu. It
will present the power measurement
choices shown below.

Power applications Description

Power Analysis True power, reactive power, true power factor,

phase angles

Waveform Analysis Cyc RMS, crest factor, frequency

Phase Angles Phase angle, in degrees, between each of CH1,

CH2, and, for 4 channel models, CH3

Harmonics Fundamental RMS, Harmonics phase, frequency,

and RMS.

Switching Loss Turn-on, turn-off, conduction, and total loss

For further information on general set up of the oscilloscope, refer to
the TPS2000 User Manual.

TPS2PWR1 Power Analysis User Manual

1-7

Getting Started

Checking Module Installation

Use the following table to check that an application module is
installed. If the oscilloscope does not show the application module
menu items, do the steps in Troubleshooting Module Installation on
page 1--9.

To check this
module

TPS2PWR1 APPLICATION A menu appears on the right-side of the

Push this
front-panel button

Check for

screen with the title labelled: Power

1-8

TPS2PWR1 Power Analysis User Manual

Troubleshooting Module Installation

If the oscilloscope does not recognize the application module at
power-up, perform these steps:

1. Turn off the oscilloscope.

2. Follow the ESD precautions shown previously.

3. Remove the application module.

4. Examine the application module contacts for damage.

5. Reinsert the application module into the oscilloscope.

6. Power on the oscilloscope. If the oscilloscope still does not show

the application menu item, you have a problem with the
application module or the module slot. Contact the nearest
Tektronix service center to resolve the problem.

Getting Started

TPS2PWR1 Power Analysis User Manual

1-9

Getting Started

1-10

TPS2PWR1 Power Analysis User Manual