GW Instek DS3-PWR Power analysis for GDS-3000 User manual

Digital Storage Oscilloscope

GDS-3000 Series

POWER ANALYSIS MANUAL

GW INSTEK PART NO. 82DS-PWR00U01

ISO-9001 CERTIFIED MANUFACTURER

April 2011

This manual contains proprietary information, which is protected by

copyright. All rights are reserved. No part of this manual may be

photocopied, reproduced or translated to another language without

prior written consent of Good Will company.

The information in this manual was correct at the time of printing.

However, Good Will continues to improve products and reserves the

rights to change specification, equipment, and maintenance

procedures at any time without notice.

Good Will Instrument Co., Ltd.

No. 7-1, Jhongsing Rd., Tucheng City, Taipei County 236, Taiwan.

TABLE OF CONTENTS

3

Table of Contents

GETTING STARTED .......................................................... 4

Activating Optional Software ................. 5

Set the Deskew .................................... 12

QUICK REFERENCE ....................................................... 14

Menu Tree / Operation Shortcuts ........ 15

MEASUREMENT ............................................................ 18

Power Analysis ..................................... 19

Power Quality ...................................... 20

Harmonics ........................................... 25

Ripple .................................................. 37

Inrush .................................................. 40

PROGRAMMING COMMANDS ....................................... 43

Power Commands ................................ 43

INDEX ........................................................................... 67

GETTING STARTED

4

GETTING STARTED

This chapter describes how to install the Power

Analysis Software as well as how to deskew the

probes.

Activating Optional Software ............................................ 5

Firmware Check ............................................................................................................6

Installation Procedure ...................................................................................................6

Uninstallation / Transfer of License Key .................................................................8

Set the Deskew ............................................................... 12

GETTING STARTED

5

Activating Optional Software

This procedure describes how to install and uninstall the optional

Power Analysis and other software modules that use a GW Instek

USB license key.

License keys can be uninstalled and transferred* to another

oscilloscope at anytime. A license key can only be used with one

machine at a time.

For more information, contact your local distributor or GW Instek

at www.gwinstek.com/ma[email protected]om.tw.

Note

This installation guide only applies to firmware

versions 1.07 or above. Do not attempt this

installation procedure with older firmware.

*For USB flash disks using a license key file with

the XXXX.lis format

The “XXXX.lis” license files use an older format

which can still be used; however these files are

tied to the serial number of an oscilloscope and

cannot be transferred. All the optional software

functions are identical for both formats, except

that the optional software cannot be transferred to

other oscilloscopes if they use the XXXX.lis format.

The XXXX.lis format license keys are no longer

available, only the XXXX.lic license keys can be

purchased.

GDS-3000 Power Analysis User Manual

6

Firmware Check

Background

Before the optional software is installed, ensure

the target oscilloscope is running firmware V1.07

or above.

1. Press the Utility key and select

System from the bottom menu.

Press System Info from the side

menu.

The firmware version will be

shown in a pop-up window.

Utility

Installation Procedure

Steps

1. Turn on the oscilloscope and insert

the GW Instek USB license key

into the front panel USB port.

GETTING STARTED

7

2. Press the Utility key and select File

Utilities from the bottom menu.

Utility

3. Use the Variable knob to select the

USB directory and then press the

Select key.

VARIABLE

Up Down

Select

4. Select PowerAnalysis.lic to install the Power

Measurement software.

5. Restart the oscilloscope after the software has

finished installing.

GDS-3000 Power Analysis User Manual

8

Note

The license keys will be erased from the USB flash

drive after they have been installed onto the

oscilloscope. Only a single license key can be

installed to any one oscilloscope at a time.

Power Analysis

Confirmation

Press the Test key on the front

panel and Power Analysis from the

bottom menu to see if the Power

Analysis activation worked.

Test

Uninstallation / Transfer of License Key

Background

License keys can be uninstalled and transferred to

another oscilloscope at anytime. Only one license

key can be used on one oscilloscope at a time.

When one of the optional software license keys

has been uninstalled, the license key is

automatically transferred back to the GW Instek

USB license key flash drive- ready to be installed

on another oscilloscope.

GETTING STARTED

9

Steps

1. Turn on the oscilloscope and insert

the GW Instek USB license key

flash drive into the front panel

USB port.

2. Press the Utility key and select

System from the bottom menu.

Select more 1 of 2 and Option

Uninstall” from the side menu.

Utility

3. Select Power Analysis to uninstall the Power

Measurement software.

GDS-3000 Power Analysis User Manual

10

4. A warning message will appear to confirm the

uninstallation. Press the same keys again to

continue the uninstallation.

Note

The uninstall options will be grayed out when the

uninstallation is successful. Below, Power Analysis

has been uninstalled.



License Key

Transfer

Confirmation

When one of the optional software modules has

been uninstalled, the license key should be

transferred back to the GW Instek USB license key

flash drive. The license key can then be used on

another oscilloscope.

Follow the procedure below to check that the

license key was transferred back.

5. Press the Utility key and select File

Utilities from the bottom menu.

6. Use the Variable knob to select the

Utility

GETTING STARTED

11

USB directory and then press the

Select key.

PowerAnalysis.lic should now be in

the USB root directory*.

*See the note below.

VARIABLE

Up Down

Select

Note

FOR LICENSE KEYS THAT ARE SAVED TO A USB

FLASH DISK WITH XXXX.LIS FORMAT

The “XXXX.lis” license files use an older format

which can still be used; however these files are

tied to the serial number of the oscilloscope. All

the optional software functions are identical for

both formats, except that the optional software

cannot be transferred to another oscilloscope if the

license key uses the XXXX.lis format.

GDS-3000 Power Analysis User Manual

12

Set the Deskew

The deskew function is used to compensate for the propagation

delay between the oscilloscope and the probe. For power

measurements this is especially important as voltage and current

probes are often used in measurements and have differing

propagation delays.

Background

The deskew function allows the time delay

between voltage and current probes to be

equalized.

Panel operation

1. If necessary configure a channel as

a voltage probe and another

channel as a current probe.

See the user

manual.

2. Press one of the Channel keys that

was set as the voltage or current

probe.

CH1

3. Press Probe from the bottom menu.

4. Press Deskew on the side menu and

use the variable knob to set the

deskew time.

Alternatively, press Set to 0s to

reset the deskew time.

Typically, both channels should

line up with a common edge.

Range

-50ns~50ns, 10ps increments

5. If necessary, repeat the procedure for the other

channel.

GETTING STARTED

13

Example

Before deskew

After deskew

GDS-3000 Power Analysis User Manual

14

QUICK REFERENCE

This chapter depicts the power analysis menu

tree. Use them as a handy reference to get quick

access to the functionality.

Menu Tree / Operation Shortcuts .................................... 15

Test key – Power Analysis - Power Quality........................................................... 15

Test key – Power Analysis - Harmonics (None) .................................................. 15

Test key – Power Analysis - Harmonics (IEC) ..................................................... 16

Test key – Power Analysis - Ripple ......................................................................... 16

Test key – Power Analysis - Inrush ........................................................................ 17

QUICK REFERENCE

15

Menu Tree / Operation Shortcuts

Test key – Power Analysis - Power Quality

Define Inputs Meas.

Display Frequency

Reference Gating

Power Quality

Voltage

Current

CH1~CH4

Voltage

CH1~CH4

Current

Turn Off

All Meas.

Normal

Inrush

Ballast

Turn On All

Meas.

Screen

Off

(Full Record)

Between

Cursors

Test key – Power Analysis - Harmonics (None)

Display

Define Inputs Test to Standard Setup Save

Meas.

File

Harmonics

Graph

Table

None

IEC 61000-3-2 All

Odd

Even

1~400

Select

V

I

Harmonics Source

20~400

Number of Harmonics

V

I

Harm. Source

Fixed

Frequency Reference

10Hz~400Hz

Fixed Reference

CH1~CH4

Voltage

CH1~CH4

Current

GDS-3000 Power Analysis User Manual

16

Test key – Power Analysis - Harmonics (IEC)

Display

Define Inputs Test to Standard IEC Setup Save

Meas.

File

Harmonics

Graph

Table

None

IEC 61000-3-2

1~40

Select

50Hz

60Hz

Line Frequency

0~1.00

Class C Power Factor

200ms~150s

Observation Period

Set to IEC

Defaults

More A

B

C(Table 1)

C(Table 2)

C(Table 3)

D

Device Class

100mA~16.0A

Class C Current

0.00~600W

C(3) & D Input Power

More

On

Off

Filter (1.5s)

On

Off

Grouping

CH1~CH4

Voltage

CH1~CH4

Current

Test key – Power Analysis - Ripple

Define Inputs Source Do

Vertical

Autoset

Ripple

V

I

CH1~CH4

Voltage

CH1~CH4

Current

QUICK REFERENCE

17

Test key – Power Analysis - Inrush

Define Inputs

Inrush

Current

CH1~CH4

Voltage

CH1~CH4

Current

GDS-3000 Power Analysis User Manual

18

MEASUREMENT

Power Analysis ................................................................ 19

Power Analysis overview .......................................................................................... 19

Power Quality ................................................................. 20

Power Quality parameter overview ......................................................................... 20

Using Power Quality Measurements ....................................................................... 21

Harmonics ...................................................................... 25

Harmonics parameter overview ............................................................................... 25

Define Harmonic Inputs ........................................................................................... 26

Choosing a Harmonic Standard Test ...................................................................... 29

Harmonics Setup – Default (None) ........................................................................ 29

Harmonics Setup – IEC ............................................................................................ 30

Harmonics Display options ...................................................................................... 33

Save Harmonic Measurements ................................................................................ 35

Ripple ............................................................................. 37

Using Ripple Measurements ..................................................................................... 37

Inrush ............................................................................ 40

Using Inrush Current Measurements ..................................................................... 40

MEASUREMENT

19

Power Analysis

The Power Analysis software provides automatic measurement for

a number of advanced measurement types such as power quality,

harmonics, ripple and inrush current. The Power analysis software

is an optional software module. To install the optional software

module, please see page 5.

Power Analysis overview

Power Quality

Power quality measures the power of a signal from

the voltage and current measurement.

Harmonics

The harmonics function shows signal harmonics

up to the 400th harmonic. Harmonic tests can be

user defined and common harmonic standards

such as IEC 61000-3-2 can also be tested for.

Ripple

The ripple function automatically calculates the

ripple and noise of the waveform.

Inrush Current

The inrush function automatically calculates the

first peak and second peak inrush current.

GDS-3000 Power Analysis User Manual

20

Power Quality

Power Quality parameter overview

All the following parameters are used for power

quality measurements.

Measurement

Measurement Group

Normal

Inrush

Ballast

V RMS



I RMS



True Power



Apparent Power



Reactive Power



Frequency



Power Factor



Phase Angle



V Crest Factor



I Crest Factor



(+)V Peak



(-)V Peak



(+)I Peak



(-)I Peak



DC Voltage



DC Current



Impedance

Resistance

Reactance

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GW Instek DS3-PWR Power analysis for GDS-3000 User manual

GW Instek DS3-PWR Power analysis for GDS-3000 User manual

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