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Digital Storage Oscilloscope

GDS-3000 Series

USER MANUAL

GW INSTEK PART NO. 82DS-33040MA1

ISO-9001 CERTIFIED MANUFACTURER

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 Dist., New Taipei City 236, Taiwan

TABLE OF CONTENTS

Table of Contents

SAFETY INSTRUCTIONS .................................................. 5

GETTING STARTED ........................................................ 10

GDS-3000 Series Overview ................... 11

Appearance .......................................... 17

Set Up .................................................. 28

QUICK REFERENCE ....................................................... 36

Menu Tree / Operation Shortcuts ........ 38

Default Settings ................................... 52

Built-in Help ........................................ 54

MEASUREMENT ............................................................ 55

Basic Measurement ............................. 57

Cursor Measurement ........................... 76

Math Operation ................................... 82

Applications ......................................... 87

Using Go_NoGo .................................. 90

Power Analysis ..................................... 95

Serial Bus ............................................ 96

CONFIGURATION .......................................................... 98

Acquisition ........................................ 100

Display............................................... 106

Horizontal View ................................. 112

Vertical View (Channel) ...................... 117

Trigger ............................................... 125

System Info / Language / Clock ......... 142

SAVE/RECALL ............................................................... 146

File Format/Utility ............................. 147

GDS-3000 Series User Manual

Create/Edit file labels ......................... 151

Save ................................................... 153

Recall ................................................. 160

Reference Waveforms ......................... 165

FILE UTILITIES ............................................................. 167

PRINT OUT .................................................................. 174

REMOTE CONTROL CONFIG ........................................ 177

Interface Configuration ...................... 178

Web Server ......................................... 184

MAINTENANCE ............................................................ 187

FAQ .............................................................................. 194

APPENDIX .................................................................... 197

GDS-3000 Specifications .................... 197

Probe Specifications .......................... 202

GDS-3000 Dimensions ....................... 204

Declaration of Conformity .................. 205

INDEX .......................................................................... 206

SAFETY INSTRUCTIONS

WARNING

Warning: Identifies conditions or practices that could result in injury or loss of life.

CAUTION

Caution: Identifies conditions or practices that could result in damage to the GDS-3000 or to other properties.

DANGER High Voltage

Attention Refer to the Manual

Protective Conductor Terminal

Earth (ground) Terminal

SAFETY INSTRUCTIONS

This chapter contains important safety instructions that you must follow during operation and storage. Read the following before any operation to insure your safety and to keep the instrument in the best possible condition.

Safety Symbols

These safety symbols may appear in this manual or on the GDS-

3000.

GDS-3000 Series User Manual

Do not dispose electronic equipment as unsorted municipal waste. Please use a separate collection facility or contact the supplier from which this instrument was purchased.

General Guideline

CAUTION

 Make sure the BNC input voltage does not

exceed 300V peak.

 Never connect a hazardous live voltage to the

ground side of the BNC connectors. It might lead to fire and electric shock.

 Do not place any heavy object on the GDS-3000.  Avoid severe impact or rough handling that

leads to damaging the GDS-3000.

 Do not discharge static electricity to the GDS-

3000.

 Use only mating connectors, not bare wires, for

the terminals.

 Do not block the cooling fan opening.  Do not perform measurement at a power source

or building installation site (Note below).

 Do not disassemble the GDS-3000 unless you

are qualified.

(Measurement categories) EN 61010-1:2001 specifies the measurement categories and their requirements as follows. The GDS-3000 falls under category II.

 Measurement category IV is for measurement performed at the

source of low-voltage installation.

 Measurement category III is for measurement performed in the

building installation.

 Measurement category II is for measurement performed on the

circuits directly connected to the low voltage installation.

 Measurement category I is for measurements performed on

circuits not directly connected to Mains.

Safety Guidelines

SAFETY INSTRUCTIONS

Power Supply

WARNING

 AC Input voltage: 100 ~ 240V AC, 48 ~ 63Hz,

auto selection. Power consumption: 96VA.

 Connect the protective grounding conductor of

the AC power cord to an earth ground, to avoid electrical shock.

Cleaning the GDS-3000

 Disconnect the power cord before cleaning.  Use a soft cloth dampened in a solution of mild

detergent and water. Do not spray any liquid.

 Do not use chemical containing harsh material

such as benzene, toluene, xylene, and acetone.

Operation Environment

 Location: Indoor, no direct sunlight, dust free,

almost non-conductive pollution (Note below)

 Relative Humidity: < 80%  Altitude: < 2000m  Temperature: 0°C to 50°C

(Pollution Degree) EN 61010-1:2001 specifies the pollution degrees and their requirements as follows. The GDS-3000 falls under degree

Pollution refers to “addition of foreign matter, solid, liquid, or

gaseous (ionized gases), that may produce a reduction of dielectric strength or surface resistivity”.

 Pollution degree 1: No pollution or only dry, non-conductive

pollution occurs. The pollution has no influence.

 Pollution degree 2: Normally only non-conductive pollution

occurs. Occasionally, however, a temporary conductivity caused by condensation must be expected.

 Pollution degree 3: Conductive pollution occurs, or dry, non-

conductive pollution occurs which becomes conductive due to condensation which is expected. In such conditions, equipment is normally protected against exposure to direct sunlight, precipitation, and full wind pressure, but neither temperature nor humidity is controlled.

Storage environment

 Location: Indoor  Temperature: -10°C to 60°C

40°C /93% RH 41°C ~60°C /65% RH

GDS-3000 Series User Manual

Disposal

Do not dispose this instrument as unsorted municipal waste. Please use a separate collection facility or contact the supplier from which this instrument was purchased. Please make sure discarded electrical waste is properly recycled to reduce environmental impact.

SAFETY INSTRUCTIONS

Green/ Yellow:

Earth

Blue:

Neutral

Brown:

Live (Phase)

Power cord for the United Kingdom

When using the oscilloscope in the United Kingdom, make sure the power cord meets the following safety instructions.

NOTE: This lead/appliance must only be wired by competent persons

WARNING: THIS APPLIANCE MUST BE EARTHED IMPORTANT: The wires in this lead are coloured in accordance with the following code:

As the colours of the wires in main leads may not correspond with the coloured marking identified in your plug/appliance, proceed as follows:

The wire which is coloured Green & Yellow must be connected to the Earth terminal marked with either the letter E, the earth symbol

or coloured Green/Green & Yellow.

The wire which is coloured Blue must be connected to the terminal which is marked with the letter N or coloured Blue or Black.

The wire which is coloured Brown must be connected to the terminal marked with the letter L or P or coloured Brown or Red.

If in doubt, consult the instructions provided with the equipment or contact the supplier.

This cable/appliance should be protected by a suitably rated and approved HBC mains fuse: refer to the rating information on the equipment and/or user instructions for details. As a guide, a cable of 0.75mm2 should be protected by a 3A or 5A fuse. Larger conductors would normally require 13A types, depending on the connection method used.

Any exposed wiring from a cable, plug or connection that is engaged in a live socket is extremely hazardous. If a cable or plug is deemed hazardous, turn off the mains power and remove the cable, any fuses and fuse assemblies. All hazardous wiring must be immediately destroyed and replaced in accordance to the above standard.

GDS-3000 Series User Manual

GDS-3000 Series Overview .............................................. 11

Series lineup ............................................................................ 11

Main Features ......................................................................... 12

Accessories.............................................................................. 13

Package Contents .................................................................. 16

Appearance ..................................................................... 17

GDS-3504/3354/3254/3154 Front Panel ........................ 17

GDS-3502/3352/3252/3152 Front Panel ........................ 17

Rear Panel ............................................................................... 23

Display ..................................................................................... 25

Set Up ............................................................................ 28

Tilt Stand ................................................................................. 28

Power Up ................................................................................ 29

First Time Use........................................................................ 30

How to Use This Manual ..................................................... 32

GETTING STARTED

This chapter describes the GDS-3000 in a nutshell, including its main features and front / rear panel introduction. After going through the overview, follow the Set Up section to properly set up the oscilloscope for first-time use. The Set Up section also includes a starter on how to use this manual effectively.

GETTING STARTED

Model name

Frequency bandwidth

Input channels

Real-time Sampling Rate

GDS-3152

150MHz

2.5GSa/s

GDS-3252

250MHz

2.5GSa/s

GDS-3352

350MHz

5GSa/s

GDS-3502

500MHz

4GSa/s

GDS-3154

150MHz

5GSa/s

GDS-3254

250MHz

5GSa/s

GDS-3354

350MHz

5GSa/s

GDS-3504

500MHz

4GSa/s

GDS-3000 Series Overview

Series lineup

The GDS-3000 series consists of 8 models, divided into 2-channel and 4-channel versions.

GDS-3000 Series User Manual

2-Channel models

VOLTS/DIV VOLTS/DIV

POSITION POSITION

TIME/DIV

HORIZONTAL

VARIABLE

ACBW50

VERTICAL

LEVEL

POSITION

TRIGGER

ACBW50

CH2CH1 EXT TRIG

Window

Split

Select

Zoom

CH1 CH2

Measure Cursor

Display Help

Test

Save/Recall Utility

50 %

Force - Trig

Autoset

Single

Run/Stop

Setup

Auto-Range

Default

Acquire

CAT

MW15pF 300Vpk MAX.

5 Vrms MAX.

W50W

75&

CAT

MW15pF 300Vpk MAX.

5 Vrms MAX.

W50W

75&

MATH

REF

BUS

CH1

input

CH2

input

EXT

trigger

Horizontal

controls

Math,

Reference

Bus keys

4-Channel models

VOLTS/DIV VOLTS/DIV VOLTS/DIV VOLTS/DIV

POSITION POSITION POSITION

TIME/DIV

POSITION

HORIZONTAL

VARIABLE

ACBW50

VERTICAL

LEVEL

POSITION

TRIGGER

ACBW50

CH4CH3CH2CH1

Window

Split

Select

Zoom

CH1 CH2 CH3 CH4

Measure Cursor

Display Help

Test

Save/Recall Utility

50 %

Force - Trig

Autoset

Single

Run/Stop

Setup

Auto-Range

Default

Acquire

CAT

MW15pF 300Vpk MAX.

5 Vrms MAX.

W50W

75&

MATH

REF

BUS

CH1

input

CH2

input

CH3

input

CH4

input

Horizontal

controls

Math, Reference

Bus keys

Performance

 High sampling rate: up to 5GSa/s real-time

(4GSa/s GDS-350X), 100GSa/s equivalent-time

 Deep memory: 25k points record length  Minimum 2ns peak detection

Features

 2 and 4 channel models  Bandwidth up to 500 MHz  5GSa/s (200ps resolution) real-time sampling

rate (4GSa/s, 250ps resolution for GDS-350X)

 100GSa/s equivalent sample rate  VPO waveform processing  Large 8’’ 800 x 600 high-resolution TFT LCD  Unique split window function  Flexible application modules

The 2 channel and 4 channel models differ in the position of the horizontal controls, the math, reference and bus keys as well as the position of the EXT trigger.

Main Features

GETTING STARTED

 Three standard input impedances

(50Ω/75Ω/1MΩ)

 Optional power measurement functions are

available for fast analysis of power quality tests

 Optional analysis software for I

C, SPI and

UART serial signal triggering and decoding

 2 and 4 channel models available up to 500 MHz  Large 8” color TFT LCD, supporting a large 8 x

10 graticule

 On-screen Help  64 MB internal flash memory.  FreeWave remote control software (free

download)

Interface

 USB host port: front and rear panel, for storage

devices

 USB slave port(Optional GPIB to USB), RS-232C

port: for remote control

 Calibration output  Go-No Go output  Trigger output  Ethernet port

Standard Accessories

Part number

Description 82DS-33040MA1

User manual

N/A region dependent

Power cord

Options

Option Number

Description

DS3-PWR

Power analysis software

DS3-SBD

Series Bus analysis software

Accessories

GDS-3000 Series User Manual

GPIB to USB adapter

GPIB Interface

Optional Accessories

Part number

Description

GTC-001

Instrument cart, 470(W)x430(D)mm (U.S. type input socket)

GTC-002

Instrument cart, 330(W)x430(D)mm (U.S. type input socket)

GTL-110

test lead, BNC to BNC heads

GTL-232

RS-232C cable, 9-pin Female to 9-pin female, Null modem for computer

GTL-246

USB cable, USB2.0A-B type cable 4P

GDB-03

Demoboard for the GDS-3000 Series DSO

GDP-025

25MHz high voltage differential probe

GDP-050

50MHz high voltage differential probe

GDP-100

100MHz high voltage differential probe

GCP-005

5A/ 40Hz~1kHz current probe

GCP-020

200A/40Hz~10kHz current probe

GCP-100

100A/DC~100kHz current probe

GCP-530

50MHz/ 30A current probe

GCP-1030

100MHz/ 30A current probe

GCP-206P

Power supply for current probe (2 input channels)

GCP-425P

Power supply for current probe (4 input channels)

GTP-151R

Passive probe; 150 MHz,10X with readout

GTP-251R

Passive probe; 250 MHz, 10X with readout

GETTING STARTED

GTP-351R

Passive probe; 350 MHz, 10X with readout

GTP-501R

Passive probe, 500MHz, 10X with readout

Drivers

USB driver

LabVIEW driver

GDS-3000 Series User Manual

Opening the Box

Contents

 Main unit

 Probe set

GTP-151R for GDS-3152 / GDS-3154 GTP-251R for GDS-3252 / GDS-3254 GTP-351R for GDS-3352 / GDS-3354 GTP-501R for GDS-3502 / GDS-3504

 Power cord

 User manual (this document)

Note

 For detailed probe specifications, see page 202.  The programming manual, PC software, and

USB driver are downloadable from the GW Instek website. Visit www.gwinstek.com, in the oscilloscope section.

Package Contents

Check the contents before using the GDS-3000.

GETTING STARTED

VOLTS/DIV VOLTS/DIV VOLTS/DIV VOLTS/DIV

POSITION POSITION POSITION

TIME/DIV

POSITION

HORIZONTAL

VARIABLE

ACBW50

VERTICAL

LEVEL

POSITION

TRIGGER

ACBW50

CH4CH3CH2CH1EXT TRIG

POWER

Window

Split

Select

Zoom

CH1 CH2 CH3 CH4

Measure Cursor

Display Help

Test

Save/Recall Utility

50 %

Force - Trig

Autoset

Single

Run/Stop

Setup

Auto-Range

Default

Acquire

CAT

MW15pF 300Vpk MAX.

5 Vrms MAX.

W50W

75&

CAT

MW15pF 300Vpk MAX.

5 Vrms MAX.

W50W

75&

MATH

REF

BUS

Off

Save

Digital Storage Oscilloscope

GDS-3354

350 MHz 5 GS/s

Visual Persistence Oscilloscope

LCD

Print key

Variable knob and select key

Split window cluster

Horizontal controls

Trigger controls

CH1~4 input

Vertical controls

Math and Reference keys

Function keys

Ext trigger input

USB Probe compensation, Ground port

Power button

Menu key

Bus keys

Bottom menu keys

Side menu keys

Print/Save key

VOLTS/DIV VOLTS/DIV

POSITION POSITION

TIME/DIV

HORIZONTAL

VARIABLE

ACBW50

VERTICAL

LEVEL

POSITION

TRIGGER

ACBW50

Save

CH2CH1 EXT TRIG

POWER

Window

Split

Select

Zoom

CH1 CH2

Measure Cursor

Display Help

Test

Save/Recall Utility

50 %

Force - Trig

Autoset

Single

Run/Stop

Setup

Auto-Range

Default

Acquire

CAT

MW15pF 300Vpk MAX.

5 Vrms MAX.

W50W

75&

CAT

MW15pF 300Vpk MAX.

5 Vrms MAX.

W50W

75&

MATH

REF

BUS

Off

Digital Storage Oscilloscope

GDS-3352

350 MHz 5 GS/s

Visual Persistence Oscilloscope

LCD

Print key

Variable knob and select key

Split window cluster

Trigger controls

Vertical controls

Horizontal controls

Ext trigger input

Function keys

CH1~4 input

USB, Probe compensation Ground port

Power button

Menu key

Math, Reference and Bus keys

Bottom menu keys

Side menu keys

Print/Save key

Appearance

GDS-3504/3354/3254/3154 Front Panel

GDS-3502/3352/3252/3152 Front Panel

GDS-3000 Series User Manual

LCD Display

8” SVGA TFT color LCD. 800 x 600 resolution, wide angle view display.

Menu Key

Use the Menu Off key to hide the onscreen menu system.

Side Menu Keys

The Side menu and Bottom menu keys are used to make selections from the soft-menus on the LCD user interface.

To choose menu items, use the 7 Bottom menu keys located on the bottom of the display panel.

To select a variable or option from a menu, use the Side menu keys on the side of the panel. See page 32 for details.

Bottom Menu Keys

Print/Save Key

The print/save key is a quick save or quick print key, depending on its configuration. For more information see pages 155(save) or 175(print).

Variable Knob and Select Key

The Variable knob is used to increase/decrease values or to move between parameters.

The select key is used to make selections.

GETTING STARTED

Split Window Cluster

Use the Split Window key to cycle between single and split screen mode. For more details on windowing, see page 66.

Horizontal Controls

The horizontal controls are used to change the position of the cursor, set the time base settings, and to zoom into the waveforms.

Horizontal Position

The Position knob is used to position the waveforms horizontally on the display screen.

Zoom

Press Zoom in combination with the horizontal POSITION knob.

TIME/DIV

The Time/Div knob is used to change the horizontal scale.

Trigger Controls

The trigger controls are used to control the trigger level and options.

Level Knob

Used to set the trigger level.

Trigger Menu Key

Used to bring up the trigger menu.

50% Key

Sets the trigger level to the half way point (50%).

Force - Trig

Press to force an immediate trigger of the waveform.

GDS-3000 Series User Manual

Autoset

Press the Autoset key to automatically set the trigger, horizontal scale and vertical scale.

Run/Stop Key

Press to freeze (Stop) or continue (Run) signal acquisition (page59).

Single

Sets the acquisition mode to single triggering mode.

Default Setup

Resets the oscilloscope to default settings.

Auto-Range

Sets the oscilloscope range automatically.

Vertical POSITION

Sets the vertical position of the waveform.

Channel Menu Key

Press the CH1~4 key to set the channel.

VOLTS/DIV Knob

Sets the vertical scale.

Input Terminals

Accepts input signals. Input impedance, selectable: 50Ω, 75Ω, 1MΩ.

Math Key

Use the math key to set and configure math functions.

GETTING STARTED

Reference Key

Press the Reference key to set or remove reference waveforms.

BUS Keys

The Serial bus decode keys are used for UART, I2C and SPI serial bus interface decoding. The serial bus decode function is an optional extra. See page 95 for details.

Function Keys

The Function Keys are used to enter and configure different functions on the GDS-3000.

Measure

Configures and runs automatic measurements.

Cursor

Configures and runs cursor measurements.

Test

Configures and runs GW Instek applications and optional functions such as the Power Analysis measurement software.

Acquire

Configures the Acquisition mode.

Display

Configures the display settings.

Help

Shows the Help menu.

Save/Recall

Used to save and recall waveforms, images and panel settings.

Utility

Configures the print/save key, display time, language and calibration.

GDS-3000 Series User Manual

USB Host Port

TypeA, 1.1/2.0 compatible. Used for data transfer.

Ground Terminal

Accepts the DUT ground lead for common ground.

Probe Compensation Output

Outputs 2Vp-p, square wave signal for probe compensation (page 190).

External Trigger Input

Accepts external trigger signals (page 125).

Input impedance: 1MΩ±3%, Voltage input: ±15V(peak), EXT trigger capacitance:~16pF.

Power Switch

Used to turn the power on/off.

: ON

: OFF

Rear Panel

Calibration output

Video Out

RS232C Output

Line out

LAN Port

USB Device/ Host port

Rear stand

Power input socket

FanKey lock

Go/No Go output

Trigger output

Ground strap connector

Calibration Output

Outputs the signal for vertical scale accuracy calibration (page 187).

Trigger Output

Outputs the trigger timing.

Go-No Go Output

Outputs Go-No Go test results (page 87) as 500us pulse signal.

Video Out

Outputs SVGA resolution to an external display.

RS232

RS232 remote control.

Line Out

Audio line out.

GETTING STARTED

GDS-3000 Series User Manual

LAN Port

Ethernet port.

Ground Strap Connector

For use with a grounding strap.

USB Device Port

The USB device port is used for remote control and for the FreeWave remote control software. USB 1.1/2.0 high speed compatible.

USB Host

The USB host port supports USB flash drives for external memory. USB 1.1/2.0 high speed compatible.

Security Slot

Kensington security slot compatible.

Power Input Socket

Power cord socket accepts AC mains, 100 ~ 240V, 50/60Hz.

For power up sequence, see page

29.

Display

Memory bar

Trigger

status

Acquistion mode

Date and

time

Waveform

Channel status

Horizontal

status

Signal

frequency

Channel

indicator

Trigger

level

Trigger

position

Automatic measurements Trigger configuration

Waveforms

Shows input signal waveforms.

Channel 1: Yellow

Channel 2: Blue

Channel 3: Pink

Channel 4: Green

Channel Indicator

The channel indicator shows the zero volt level of the signal waveform for each activated channel. The active channel is shown with a solid color.

Math

Bus (B1)

Active channel

(CH3)

Reference waveform

(Ref1)

Activated channel

(CH4)

Trigger Position

Shows the position of the trigger.

Horizontal Status

Shows the horizontal scale and position.

GETTING STARTED

GDS-3000 Series User Manual

Date and Time

Current date and time (page 144).

Memory Bar

The ratio and the position of the displayed waveform compared with the internal memory (page

112).

Trigger Status

Triggered.

Not triggered, display not updated.

Trigger stopped. Also appears in Run/Stop (page59).

Roll mode.

Auto trigger mode. For trigger details, see page 125.

Acquisition Mode

Normal mode

Peak detect mode

Hi Resolution

Average mode For acquisition details, see page 100.

Signal Frequency

Shows the trigger source frequency.

Indicates the frequency is less than 2Hz (lower frequency limit).

GETTING STARTED

Trigger Configuration

Trigger source, slope, voltage, coupling.

Trigger source, trigger (video), field, line, coupling.

For trigger details, see page 125.

Channel Status

Channel 1, inverted, AC coupling, 1V/Div

Channel 1, GND coupling, 1V/Div

For channel details, see page 117.

Set Up

Upright

Turn the legs under the casing as shown below to have the instrument sit upright.

Tilt

To tilt, tilt the legs back behind the casing, as shown below.

Tilt Stand

GDS-3000 Series User Manual

Power Up

Step

1. Connect the power cord to

the rear panel socket.

2. Press the POWER key. The

display becomes active in ~ 30 seconds.

: ON

: OFF

Note

The GDS-3000 recovers the state right before the power is turned OFF. The default settings can be recovered by pressing the Default key on the front panel. For details, see page 160.

GETTING STARTED

First Time Use

Background

This section describes how to connect a signal, adjust the scale, and compensate the probe. Before operating the GDS-3000 in a new environment, run these steps to make sure the instrument performs at its full potential.

1. Power On

Follow the procedures on the previous page.

2. Set the Date and Time

Set the date and time.

Page 144

3. Reset System

Reset the system by recalling the factory settings. Press the Default Setup key on the front panel. For details, see page 160.

Default

Setup

4. Install Optional Software

The optional software packages (Power Analysis, Serial Bus Decode) can be activated.

Page 192

5. Connect Probe

Connect the probe to the CH1 input terminal and probe compensation signal output (2Vp-p, 1kHz square wave).

Set the probe attenuation to x10 if the probe has adjustable attenuation.

VOLTS/DIV VOLTS/DIV VOLTS/DIV VOLTS/DIV

POSITION POSITION POSITION

TIME/DIV

POSITION

HORIZONTAL

VARIABLE

ACBW50

VERTICAL

LEVEL

POSITION

TRIGGER

ACBW50

CH4CH3CH2CH1EXT TRIG

POWER

Window

Split

Select

Zoom

CH1 CH2 CH3 CH4

Measure Cursor

Display Help

Test

Save/Recall Utility

50 %

Force - Trig

Autoset

Single

Run/Stop

Setup

Auto-Range

Default

Acquire

CAT

MW15pF 300Vpk MAX.

5 Vrms MAX.

W50W

75&

CAT

MW15pF

300Vpk MAX.

5 Vrms MAX.

W50W

75&

MATH

REF

BUS

Off

Save

Digital Storage Oscilloscope

GDS-3354

350 MHz 5 GS/s

Visual Persistence Oscilloscope

x10

X 10

GDS-3000 Series User Manual

GETTING STARTED

6. Capture Signal

(Autoset)

Press the Autoset key. A square waveform appears on the center of the screen. For Autoset details, see page 58.

Autoset

7. Select Vector

Waveform

Press the Display key, and set the display to Vector on the bottom menu.

Display

8. Compensate

Probe

Turn the adjustment point on the probe to make the square waveform edge flat.

Under

Compensation

Normal

Over

Compensation

GDS-3000 Series User Manual

9. Start Operation

Continue with the other operations.

Measurement: page 55

Configuration: page 87

Save/Recall page 146

File Utilities page 166

Print Out 174

Remote Control page 177

Background

This section describes the conventions used in this manual to operate the GDS-3000.

Throughout the manual any reference to pressing a menu key refers to the keys directly below or beside any menu icons or parameters.

When the user manual says to “toggle” a value or parameter, press the corresponding menu item. Pressing the item will toggle the value or parameter.

Active parameters are highlighted for each menu item. For example in the example below, Coupling is currently set to DC.

If a menu item can be toggled from one value or parameter to another, both options will be visible, with the current option highlighted. In the example below the slope can be toggled from a rising slope to a falling slope.

Menu item

Parameter

Menu item

Active

parameter

Optional

parameter

Menu item

Active

parameter

Optional

parameter

How to Use This Manual

GETTING STARTED

Selecting a Menu Item or Parameter

When the user manual says to “select” a value from one of the side menu parameters, first press the corresponding menu key and use the variable knob to either scroll through a parameter list or to increase or decrease a variable.

Example

1. Press a bottom menu key to access

the side menu.

2. Press a side menu key to either set

a parameter or to access a sub menu.

3. If accessing a sub menu or setting

a variable parameter, use the variable knob to scroll through menu items or variables. Use the select key to confirm and exit.

VARIABLE

Up Down

Select

4. Press the same bottom menu key

again to reduce the side menu.

GDS-3000 Series User Manual

Toggling a Menu Parameter

1. Press the bottom menu key

to toggle the parameter.

Reduce Lower Menu

GETTING STARTED

1. Press the relevant function

key again to reduce the bottom menu. For example: press the trigger menu key to reduce the trigger menu.

Remove All Menus

1. Press the Menu Off key to

reduce each menu level.

GDS-3000 Series User Manual

Menu Tree / Operation Shortcuts .................................... 38

Convention ............................................................................. 38

Acquire Key ............................................................................ 39

Autoset Key ............................................................................ 39

Auto-Range ............................................................................. 40

CH1 ~ 4 Key .......................................................................... 40

Cursor Key .............................................................................. 41

Display Key ............................................................................ 41

Help Key ................................................................................. 41

Math Key................................................................................. 42

Measure Key ........................................................................... 43

Print/Save Key....................................................................... 44

Run/Stop Key ........................................................................ 44

REF Key ................................................................................. 44

Save/Recall Key ..................................................................... 45

Test Key .................................................................................. 46

Test Key – Go-NoGo .......................................................... 46

Trigger Type Menu................................................................ 47

Trigger Edge Menu ............................................................... 47

Trigger Delay Menu .............................................................. 47

Trigger Pulse Width Menu ................................................... 48

Trigger Video Menu .............................................................. 48

Trigger Pulse Runt Menu ..................................................... 49

Trigger Rise & Fall Menu ..................................................... 49

Utility Key ............................................................................... 50

Utility Key – I/O ................................................................... 50

Utility Key – File Utilities ..................................................... 51

Zoom Key ............................................................................... 51

QUICK REFERENCE

This chapter describes the GDS-3000 menu tree, shortcuts to major operations, built-in Help access, and default factory settings. Use them as a handy reference to get a quick access to the functionality.

QUICK REFERENCE

Default Settings ............................................................. 52

Built-in Help .................................................................. 54

GDS-3000 Series User Manual

For all menu trees, bottom menu keys are shown as grey icons and side menu keys are shown in white. All menu tree operations are shown in order from top to bottom.

Below is an example of the menu tree operation for the trigger source menu and a comparison to the operation on the DSO screen.

Menu Tree

Type Edge

Source Coupling Slope Level Mode Holdoff

CH1~ CH4

EXT

AC Line

EXT Probe

Volt

Current

AC HF Reject LF Reject

Noise Reject

0.00V~ XX.XV Set to TTL

1.4V

Set to ECL

-1.3V

Set to 50%

Auto

Normal

00.0ns~

Xxx.xxns

Set to

Minimum

EXT Probe

On Off

Alternate

On Screen Menu

1 2

Menu Tree / Operation Shortcuts

Convention

Acquire Key

Sets the acquisition mode.

Acquire

Reset H

Position to 0s

XY ET

Sample rate

XXXMSPS

OFF'YT(

Triggered

Sin(x)/x

Mode

Sample

Peak Detect

Hi Resolution

2,4,8,16,32,64,

128,256

Average

Automatically finds the signal and sets the horizontal and vertical scale.

Autoset

Undo AutosetMode

Fit Screen AC Priority

Autoset Key

QUICK REFERENCE

Auto-Range

Constantly adjusts the vertical and or horizontal scale.

Auto-Range

Vertical

Only

Vertical

And

Horizontal

Only

Undo

Autoranging

OFF

Mode

Fit Screen

AC Priority

Set the channel input parameters.

Voltage Current

Probe

Impedence Invert Bandwidth Expand by

Position/

Set to 0

xxxV

Probe

Off

Coupling

AC DC

GND

Full

20MHz 100MHz 200MHz 350MHz

CH1

1MΩ 75Ω 50Ω

1mX ~ 1kX Set to 10X

Attenuation

-50ns~50ns Set to 0s

Deskew

Ground

Center

CH1 ~ 4 Key

GDS-3000 Series User Manual

Cursor Key

Set cursor positions.

Cursor

V CursorH Cursor

Set the display properties.

Display

Dot Vector Persistence

Dot

Vector

Clear

Persistence

Auto

100ms~10s

Infinite

VPO Off

Time

Intensity

0%~100%

Waveform Intensity

10%~100%

Graticule Intensity

Waveform

Gray

Color

Graticule

Full

Grid

Cross Hair

Frame

Turn help mode On/Off.

Display Key

QUICK REFERENCE

Help Key

Math Key

FFTMath

CH1~CH4 Ref1~Ref4

Source 1

XXDiv

Position

× ÷

Operator

CH1~CH4 Ref1~Ref4

Source 2

XX~XXV

Unit/Div

dBV RMS

Linear RMS

Vertical Units

Hanning

Rectangular

Hamming

Blackman

Window

CH1~CH4

Ref1~Ref4

Source

XXDiv

Position

XX~XXdB/V

Unit/Div

Standard math and FFT functions.

GDS-3000 Series User Manual

Display automatic measurements either individually or as voltage/current, time or delay measurement groups.

Measure

Remove

Measurement

Gating Display All

Off

(Full Record)

Add

Measurement

CH1

CH2 CH3 CH4

Off

Window 1 Window 2 Window 3 Window 4

Remove All

Pk-Pk

Max

Min

Amplitude

High Low

Average

RMS ROVShoot FOVShoot

RPREShoot

FPREShoot

V/I

Frequency

Period

RiseTime

FallTime

+Width

-Width

Dutycycle

Time

FRR

FRF

FFR

FFF

LRR

LRF

LFR

LFF

Phase

Delay

Screen

Between

Cursors

CH1~CH4

Source 1

CH1~CH4

Source 2

QUICK REFERENCE

Measure Key

Print/Save Key

Save

Print or save screen images.

Run/Stop

Freeze/unfreeze signal acquisition

R2ON/OFF R3ON/OFF R4ON/OFFR1ON/OFF

Vertical scale

Vertical position

Vertical

Horizontal scale

Horizontal position

Horizontal

Edit Labels

Ref Details

Save To File

Goes to the Save Waveform menu (Save/Recall)

Goes to the Edit Labels menu (Save/Recall)

Vertical scale

Vertical position

Vertical

Horizontal scale

Horizontal position

Horizontal

Vertical scale

Vertical position

Vertical

Horizontal scale

Horizontal position

Horizontal

Vertical scale

Vertical position

Vertical

Horizontal scale

Horizontal position

Horizontal

Run/Stop Key

REF Key

GDS-3000 Series User Manual

Save/Recall Key

Save and recall images, waveforms and panel setups. Edit labels for reference and setup files.

Save Waveform Save Setup

Recall

Waveform

Recall

Setup

Edit File

Label

Edit Label

Save Image

Png

Bmp

File Format

On Off

Ink Saver

Save Now

File Utilites

Set1~Set20

Filename.set

Ref1~4

Set1~20

Label For

ACK AD0

ADDR

ANALOG

BIT CAS CLK

CLOCK

CLR

COUNT

DATA

DTACK

ENABLE

HALT

INT

IRQ

LATCH

LOAD

NMI

User Preset

Edit Character

CH1~CH4

Math

Ref1~4

All Displayed

From

Ref 1 ~ Ref4

Wave1~20

Filename.LSF Filename.CSV

To File

Save Now

File Utilites

Save Now

File Utilites

To File

Ref1~Ref4

Wave1~20

Filename.LSF

From

From File

Recall Now

File Utilites

Edit Label

Set1~Set20

Filename.set

From File

From

Recall Now

File Utilites

Goes to the File Utilities menu

File Utilites

Goes to the Keypad menuEdit Character

Goes to the Edit label menuEdit Label

Save/Recall

QUICK REFERENCE

GDS-3000 Series User Manual

Use the Go-NoGo application as well as additional optional software such as the Power Analysis software.

Test

APP.

Go-NoGo

Goes to the Power Quality menu

Goes to the Harmonics menu

Power Analysis

Power Quality

Inrush Current

Ripple

Harmonics

Goes to the Riple menu Goes to the Inrush Current

Go-NoGo

Goes to the Go-NoGo menu

Unistall

When

Compare

Source

Maximum

Position

Save Operation

EnableGoNo

XX div

Exits CH1~CH4

Violating

Set violation

STOP

Set violation

STOP_BEEP

Set violation

CONTINUE

Set violation

CONTINUE_

BEEP

Enters

Auto Tolerance

0.4%~40%

Minimum

Position

XX div

Break

Disable

Test Key

Test Key – Go-NoGo

QUICK REFERENCE

Type

Pulse Runt Rise & Fall

Bus

Others

Edge

Delay

Pulse Width

Video

Type

Edge

Source Coupling Slope Level Mode Holdoff

CH1~ CH4

EXT

AC Line

EXT Probe

Volt

Current

-XX~XXV

Set to TTL

1.4V

Set to ECL

-1.3V

Set to 50%

Auto

Normal

10.0ns~

10.0s

Set to

Minimum

EXT Probe

Off HF

Reject

On Off

Noise Reject

On Off

Alternate

1mX ~ 1kX

Attenuation

Off HF

Reject

On Off

Noise Reject

Type

Delay

Source Coupling Slope Level Delay Mode / Holdof

-XX~XXV

Set to TTL

1.4V

Set to ECL

-1.3V

Set to 50%

10.0ns ~ 10.0s

Auto

Normal

Holdoff

10.00ns ~ 10.0s

Set to

Minimum

Time

1~65535

Event Holdoff

Set to

Minimum

Trigger Type Menu

Trigger Edge Menu

Trigger Delay Menu

GDS-3000 Series User Manual

Type

Pulse Width

Source Polarity When Threshold Mode Holdof

CH1~ CH4

EXT

AC Line

< =

≠

-XX~XXV

Set to TTL

1.4V

Set to ECL

-1.3V

Set to 50%

Auto

Normal

10.0ns ~ 10.0s

> 4.00ns~10.0S

EXT Probe

Volt

Current

EXT Probe

Set to

Minimum

On Off

Alternate

1mX ~ 1kX

Attenuation

Type

Video

Source Standard Trigger On Polarity Mode Holdof

CH1~ CH4

NTSC

PAL

SECAM

1~XXXX

Auto

Normal

All Fields

All Lines

EXT Probe

Volt

Current

EXT Probe

Field 1

1~XXXX

Field 2

10.0ns ~ 10.0s Set to

Minimum

480P 576P

EDTV

720P 1080i

1080P

HDTV

On Off

Alternate

1mX ~ 1kX

Attenuation

Trigger Pulse Width Menu

Trigger Video Menu

QUICK REFERENCE

Type

Pulse Runt

Source Polarity Mode Holdof

Auto

Normal

Input

CH1 CH2 CH3 CH4

EXT Probe

Volt

Current

When

< =

≠

> 4.00ns~10.0s

Threshold

Set to TTL

1.4V

Set to ECL

-1.3V

-XX~XXV

10.0ns~10.0s

Set to

Minimum

On Off

Alternate

Type

Rise & Fall

Source Mode Holdof

Auto

Normal

Input

CH1 CH2 CH3 CH4

When

> < =

≠

> 4.00ns~10.0s

Threshold

Set to TTL

1.4V

Set to ECL

-1.3V

-XX~XXV

Slope

High

Low

10.0ns~10.0s Set to

Minimum

EXT Probe

Volt

Current

On Off

Alternate

Trigger Pulse Runt Menu

Trigger Rise & Fall Menu

Utility Key

Utility

System

Date &

Time

Printout

File Utilities

I/OLanguage

English

Trad. Chinese

Simp. Chinese

Korean

Japanese etc.

Polish

French

and German

Ethernet

RS-232C

System

Info

On Off

Ink Saver

Save

Function

Create Folder

Rename

Delete

2XXX

Year

Jan~Dec

01~31

Month Day

0~59 0~59

Hour Minute

Save Now

More 1 of 2

USB Device

Port

Ethernet

RS-232C

USB Device

Port

Goes to the I/O USB Device Port menu

Goes to the I/O Ethernet menu

Goes to the I/O RS232 menu

Create Folder

Rename

Goes to the File Utilities

Bmp

Png

File Format

Copy To USB

Go to System

Vertical

Self Cal

Option uninstall

Power Analysis

BUS

Etc.

More 2 of 2

More 1 of 2

Erase Memory

More 1 of 2

I/O

USB Device

Port

Ethernet

RS-232

Computer

Printer

GPIB

Go Back

Save Now

On Off

DHCP/BOOTP

1~30

GPIB Address

2400, 4800,

9600, 19200,

38400, 57600,

115200

Baud Rate

1, 2

Stop Bit

Odd

Even

None

Parity

Back Space

Save Now

GDS-3000 Series User Manual

Utility Key – I/O

QUICK REFERENCE

File Utilities Create Folder

Rename

Delete

Keypad

Enter Character

Back Space

Editing

Completed

Cancel

Keypad

Enter Character

Back Space

Editing

Completed

Cancel

Copy To USB

Zoom

Fine Coarse

Reset Zoom

Position to 0s

Reset H Position

to 0s

Fine

Coarse

Utility Key – File Utilities

Zoom Key

GDS-3000 Series User Manual

The default factory installed settings can be recalled at any time by pressing the Default Setup key.

Default

Setup

Acquire

Mode: Sample

XY: OFF

Interpolation: Sin(x)/x

Sample rate: 250MSPS (200MSPS GDS350X)

Display

Mode: Vector

Persistence: Auto

Waveform intensity: 50%

Graticule intensity: 50%

Waveform visuals: Gray

Graticule: full

Channel

Scale: 100mV/Div

CH1: On

Coupling: DC

Impedance: 1MΩ

Invert: Off

Bandwidth: full

Expand: By ground

Position: 0.00V

Probe: voltage

Probe attenuation: 1x

Deskew: 0s

Cursor

Horizontal cursor: Off

Vertical Cursor: Off

Measure

Source1: CH1

Source2: CH2

Gating: Off

Display: Off

Horizontal

Scale: 10us/Div

Math

Source1: CH1

Operator: +

Source2: CH2

Position: 0.00 Div

Unit/Div: 200mV

Math Off

Test

App: Go-NoGo

Trigger

Type: Edge

Source: CH1

Coupling: DC

Alternate: Off

Rejection: Off

Noise Rejection: Off

Default Settings

QUICK REFERENCE

Slope: positive

Level: 0.00V

Mode: Auto

Holdoff: 10.0ns

Utility

Print key: Save

Ink Saver: Off

Save Recall

Image file format: Bmp

Data file format: LSF

GDS-3000 Series User Manual

The Help key accesses a context sensitive help menu. The help menu contains information on how to use the front panel keys.

Panel Operation

1. Press the Help key. The

display changes to Help mode.

Help

2. Use the Variable knob to scroll up and down

through the Help contents. Press Select to view the help on the selected item.

Home Key

Press the Home key to return to the main help screen.

Go Back

Press the Back key to go to the previous menu page.

Exit

Press the Help key again or press the Exit key to exit the Help mode.

Help

Built-in Help

MEASUREMENT

Basic Measurement ........................................................ 57

Channel Activation.................................................................57

Autoset .....................................................................................58

Auto-Range..............................................................................60

Run/Stop .................................................................................62

Horizontal Position/Scale ....................................................63

Vertical Position/Scale ..........................................................65

Split Window Mode ...............................................................66

Automatic Measurement .......................................................68

Measurement Items ................................................................68

Individual Mode .....................................................................71

Remove Measurement ...........................................................72

Gated mode .............................................................................73

Display All mode ....................................................................74

Cursor Measurement ...................................................... 76

Use Horizontal Cursors.........................................................76

Use Vertical Cursors ..............................................................79

Math Operation ............................................................. 82

Overview ..................................................................................82

Addition/Subtraction/Multiplication/Division ...............83

FFT ...........................................................................................85

Applications................................................................... 87

Overview ..................................................................................87

Running Applications ............................................................87

Uninstalling Applications ......................................................88

Using Go_NoGo ............................................................ 90

Power Analysis ............................................................... 95

Power Analysis Overview .....................................................95

Serial Bus ...................................................................... 96

MEASUREMENT

GDS-3000 Series User Manual

Serial Bus Overview .............................................................. 96

MEASUREMENT

Activate Channel

To activate an input channel, press a channel key.

When activated, the channel key will light up. The corresponding channel menu will also appear.

CH1 CH1

Each channel is associated with the color shown beside the VOLTS/DIV dial: CH1: yellow, CH2: blue, CH3: pink and CH4: green.

When a channel is activated, it is shown above the bottom menu system.

CH1 CH3CH2 CH4

De-activate Channel

To de-activate a channel, press the corresponding channel key again. If the channel menu is not open, press the channel key twice (the first press shows the Channel menu).

CH1 CH1

Basic Measurement

This section describes the basic operations required in capturing and viewing the input signal. For more detailed operations, see the following chapters.

 Cursor Measurement → from page 76  Configuration → from page 87

Before operating the oscilloscope, please see the Getting Started chapter, page 10.

Channel Activation

Default Setup

To activate the default state, press Default Setup.

Default

Setup

Autoset

The Autoset key (page 58) does NOT automatically activate the channels to which input signals are connected.

Autoset

Background

The Autoset function automatically configures the panel settings to position the input signal to the best viewing condition. The GDS-3000 automatically configures the following parameters.

 Horizontal scale  Vertical scale  Trigger source channel

There are two operating modes for Autoset function: Fit Screen Mode and AC Priority Mode.

Fit Screen Mode will fit the waveform to the best scale, including any DC components (offset). AC priority mode will scale the waveform to the screen removing any DC component.

Panel Operation

1. Connect the input signal to the

GDS-3000 and press the Autoset key.

Autoset

2. The waveform appears in the center of the

display.

GDS-3000 Series User Manual

MEASUREMENT

Before

After

3. To undo Autoset, press Undo

Autoset from the bottom menu.

To remove the Undo Autoset softkey, press any other key.

Change modes

1. Choose between Fit Screen Mode

and AC Priority Mode from the bottom menu.

2. Press the Autoset key again to use

Autoset in the new mode.

Autoset

Fit Screen Mode

AC Priority

Limitation

Autoset does not work in the following situations.

 Input signal frequency is less than 20Hz  Input signal amplitude is less than 30mV

Auto-Range

Background

The Auto-Range function works similarly to the Autoset function, except the Auto-Range function works continuously when it is on. The Auto-Range function will continuously monitor the input signal and adjust the horizontal and vertical scale of a displayed signal so that waveform(s) are displayed at the best possible scale.

In addition, the Auto-Range function can also be configured to only adjust the vertical or horizontal scale.

There are two operating modes for the Auto-Range function: Fit Screen Mode and AC Priority Mode.

Fit Screen Mode will fit the waveform to the best scale, including any DC components (offset). AC priority mode will scale the waveform to the screen removing any DC component.

Panel Operation

1. After a signal has already

been triggered, press the Auto-Range key. The AutoRange key lights up.

Auto-Rangeà Auto-Range

2. The waveform appears in the center of the

display.

Before

After

GDS-3000 Series User Manual

MEASUREMENT

3. To undo Auto-Range, press Undo

Autoranging from the bottom

menu.

Disable AutoRange

Press Autoranging from the bottom menu to turn Auto-Range On/Off.

Configure AutoRange

Press Vertical Only for vertical autoranging only.

Press Horizontal Only for horizontal autoranging only.

Press Horizontal and Vertical for autoranging on both axes.

Change modes

1. Choose between Fit Screen Mode

and AC Priority Mode from the bottom menu.

2. Press the Auto-Range key twice to

reset the Auto-Range function.

Auto-Range

Fit Screen Mode

AC Priority

Limitation

Auto-Range does not work in the following situation.

 Input signal frequency is less than 20Hz  Input signal amplitude is less than 30mV

Run/Stop

Background

By default, the waveform on the display is constantly updated (Run mode). Freezing the waveform by stopping signal acquisition (Stop mode) allows flexible observation and analysis. To enter Stop mode, two methods are available: pressing the Run/Stop key or using the Single Trigger mode.

Stop mode icon

When in Stop mode, the Stop icon appears at the top of the display.

Triggered icon

Freeze Waveform by Run/Stop Key

Press the Run/Stop key once. The waveform and signal acquisition freezes. To unfreeze, press the Run/Stop key again.

Run/Stop

Freeze Waveform by Single Trigger Mode

In the Single Trigger mode, the waveform always stays in the Stop mode, and is updated only when the Single key is pressed. When the single key is pressed, the Run/Stop key turns red. For details, see page

125.

Single

Waveform Operation

The waveform can be moved or scaled in both Run and Stop mode, but in different manners. For details, see page 112 (Horizontal position/scale) and page 117 (Vertical position/scale).

GDS-3000 Series User Manual

MEASUREMENT

Set Horizontal Position

The horizontal position knob moves the waveform left and right.

As the waveform moves, the memory bar on the top of the display indicates the portion of the waveform currently shown on the display and the position of the horizontal marker on the waveform.

Position Indicator

The horizontal position is shown at the bottom of the display grid to the right of H icon.

Select Horizontal Scale

To select the timebase (scale), turn the TIME/DIV knob; left (slow) or right (fast).

TIME/DIV

Left Right

Range

1ns/div ~ 100s/div, 1-2-5 increments (1-2.5-5 for GDS350X.

Horizontal Position/Scale

For more detailed configuration, see page 112.

GDS-3000 Series User Manual

The Time/Division rate is displayed to the left of the H icon at the bottom of the screen.

Memory bar

The size of the memory bar changes to reflect the timebase and the section of the waveform that is displayed on screen.

Fast

Medium

Slow

The Sample rate changes according to the time/division. For example the sample rate of the GDS-3304 at different time bases is shown below.

10ms

250KPS

5ms

500KSPS

2ms

1MSPS

Stop mode

In the Stop mode, the waveform size changes according to the scale.

MEASUREMENT

Set Vertical Position

To move the waveform up or down, turn the vertical position knob for each channel.

POSITION

Down

As the waveform moves, the vertical position of the cursor appears on the display.

Run/Stop mode

The waveform can be moved vertically in both Run and Stop mode.

Select Vertical Scale

To change the vertical scale, turn the VOLTS/DIV knob; left (down) or right (up).

Down

Range

2mV/div ~ 1V/div (50Ω/75Ω)/, 2mV/div ~ 5V/div (1MΩ)

1-2-5 increments

The vertical scale indicator for each channel on the bottom of the display changes accordingly.

Vertical Position/Scale

For more detailed configuration, see page117.

GDS-3000 Series User Manual

Enter Split Screen Mode

1. Activate each channel that is

to be used in the split screen mode.

CH1 CH1

page 57

2. Press the Split Window key

to enter the split screen mode.

Split

Window

3. Split window mode appears. The number of

windows depends on the number of active channels. 1-2 active channels will produce 2 split windows, while 3-4 active channels will produce 4 split windows.

The split window that has the active channel is shown with an orange border.

Example

4 channel split window

Active

window

2 channel split window

Active

window

Split Window Mode

The split window mode is able to display and trigger each active channel independently. The split window mode is especially useful for signal comparisons. Reference waveforms can also be used in this mode. Most functions and features can be used with split screen mode except for the Math, XY display and Zoom mode.

MEASUREMENT

Select Active Channel

To select the active channel, press the corresponding split window key:

4 Window split screen:

Window 1Window

Window 3Window

2 window split screen:

Window 1Window

Window 2Window

Reference Waveforms

Reference waveforms can also be used in this mode. Each reference waveform will be recalled to the corresponding split window number. I.e., Ref1 will be recalled to the first split window, Ref2 to the second window and so on.

Use Active Channel Settings

To return to full screen mode using the settings of the active channel, press the button.

Exit Split Window mode

To exit split window mode, press the Split Window key again.

Split

Window

GDS-3000 Series User Manual

V/I Measurements

Time Meas.

Delay Meas.

Overview

Pk-Pk

Max

Min

FOVShoot

ROVShoot

RMS

Average

Low

High

Amplitude

RPREShoot

FPREShoot

Frequency

Dutycycle

-Width

+Width

FallTime

RiseTime

Period

FRR

FRF

FFR

Phase

LFF

LFR

LRF

LRR

FFF

Voltage/Current Measurement

Pk-Pk

(peak to peak)

Difference between positive and negative peak voltage (=Vmax − Vmin)

Max

Positive peak voltage

Min

Negative peak voltage

Amplitude

Difference between global high and global low voltage (=Vhi − Vlo)

Automatic Measurement

The automatic measurement function measures and updates major items for Voltage/Current, Time, and Delay type measurements.

Measurement Items

MEASUREMENT

High

Global high voltage

Low

Global low voltage

Average

Averaged voltage of the first cycle

RMS

RMS (root mean square) voltage

ROVShoot

Rise overshoot voltage

FOVShoot

Fall overshoot voltage

RPREShoot

Rise preshoot voltage

FPREShoot

Fall preshoot voltage

Time Measurement

Frequency

Frequency of the waveform

Period

Waveform cycle time (=1/Freq)

RiseTime

Rising time of the pulse (~90%)

FallTime

Falling time of the pulse (~10%)

+Width

Positive pulse width

–Width

Negative pulse width

Duty Cycle

Ratio of signal pulse compared with whole cycle =100x (Pulse Width/Cycle)

GDS-3000 Series User Manual

Delay Measurement

FRR

Time between: Source 1 first rising edge and Source 2 first rising edge

FRF

Time between: Source 1 first rising edge and Source 2 first falling edge

FFR

Time between: Source 1 first falling edge and Source 2 first rising edge

FFF

Time between: Source 1 first falling edge and Source 2 first falling edge

LRR

Time between: Source 1 first rising edge and Source 2 last rising edge

LRF

Time between: Source 1 first rising edge and Source 2 last falling edge

LFR

Time between: Source 1 first falling edge and Source 2 last rising edge

LFF

Time between: Source 1 first falling edge and Source 2 last falling edge

Phase

The phase difference of two signals, calculated in degrees. T1÷T2×360.

MEASUREMENT

Add Measurement Item

1. Press the Measure key.

Measure

2. Press Add Measurement from the

bottom menu.

3. Choose either a V/I, Time or Delay

measurement from the side menu.

V/I (Voltage/ Current)

Pk-Pk, Max, Min, Amplitude, High, Low, Average, RMS, ROVShoot, FOVShoot, RPREShoot, FPREShoot

Time

Frequency, Period, RiseTime, FallTime, +Width, –Width, Duty Cycle

Delay

FRR, FRF, FFR, FFF, LRR, LRF, LFR, LFF, Phase

4. All individual measurements will be displayed

in a window on the bottom of the screen. The channel number and channel color indicate the measurement source: yellow = CH1, blue = CH2, pink = CH3, green = CH4.

Individual Mode

Individual mode shows up to eight selected measurement items on bottom of the screen from any channel source.

GDS-3000 Series User Manual

Choose a Source

The channel source for measurement items can be set either before or when selecting a measurement item.

1. To set the source, press either the

Source1 or Source2 key from the side menu and choose the source. Source 2 is only for delay measurements.

Range

CH1, CH2, CH3, CH4

Split Window Mode

Individual mode can be used with the split window mode. Each individual measurement will be displayed in the split window that houses the source of the measurement.

Delay measurements are not supported as only one source can be used for each measurement in split window mode.

Remove Measurement Item

1. Press the Measure key.

Measure

2. Press Remove Measurement from the

bottom menu.

3. Choose which measurement

window (if in split window mode) the item is located in (Window 1~4) and use the variable knob to remove an item.

Remove Measurement

Individual measurements can be removed at any time using the Remove Measurement function.

MEASUREMENT

Remove All Items

Press Remove All to remove all the measurement items in full screen mode, or to remove all the measurement items for the active window in split screen mode.

Set Gating Mode

1. Press the Measure key.

Measure

2. Press Gating from the bottom

menu.

3. Choose one of the gating modes

from the side menu: Off (Full Record), Screen, Between Cursors

Cursors On Screen

If Between Cursors is selected, the cursor positions can be edited by using the cursor menu.

Page 76

Gated mode

Some automatic measurements can be limited to a “gated” area between cursors. Gating is useful for measuring a magnified waveform or when using a fast time base. The Gated mode has three possible configurations: Off (Full Record), Screen and Between Cursors.

GDS-3000 Series User Manual

View Measurement Results

1. Press the Measure key.

Measure

2. Press Display All from the bottom

menu.

3. Choose a channel (CH1, CH2, CH3, CH4) from

the side menu to display auto measurement items.

Note: only the channels that are activated are available.

4. The results of Voltage and Time type

measurements appear on the display.

Remove Measurements

To remove the measurement results, press OFF.

Display All mode

Display All mode shows and updates all items from Voltage and Time type measurements.

MEASUREMENT

Delay Measurements

Delay type measurement is not available in this mode as only one channel is used as the source. Use the Individual measurement mode (page 71) instead.

GDS-3000 Series User Manual

Panel Operation/ Range

1. Press the Cursor key once.

Cursor

2. Press H Cursor from the bottom

menu.

3. Press H Cursor repeatedly to

toggle the cursor type.

Range

Left cursor ( ) movable, right cursor position fixed

Right cursor ( ) movable, left cursor position fixed

Left and right cursor ( + ) movable together

4. The cursor position

information appears on the top left hand side of the screen

Cursor

Time, Voltage/Current

Cursor

Time, Voltage/Current

Delta (difference between cursors)

Cursor Measurement

Horizontal or vertical cursors are used to show the position and values of waveform measurements and math operation results. These results cover voltage, time, frequency and other math operations. When the cursors (horizontal, vertical or both) are activated, they will be shown on the main display unless turned off. (page 111).

Use Horizontal Cursors

MEASUREMENT

5. Use the Variable knob to move the

movable cursor(s) left or right.

VARIABLE

Left Right

Example

Horizontal

cursors

FFT Math

FFT Math has different content. For FFT math details, see page

85.

Cursor

Frequency, dB/V

Cursor

Frequency, dB/V

Delta (difference between cursors)

Example

Horizontal

cursors

GDS-3000 Series User Manual

XY Mode

XY mode cursors measure a number of X by Y measurements.

Cursor

Time, rectangular, polar co-ordinates, product, ratio.

Cursor

Time, rectangular, polar co-ordinates, product, ratio.

Delta (difference between cursors)

Example

Horizontal

cursors

MEASUREMENT

Panel Operation/ Range

1. Press the Cursor key twice.

Cursor

2. Press V Cursor from the bottom

menu.

3. Press V Cursor repeatedly to toggle

the cursor type.

Range

Upper cursor movable, lower cursor position fixed

Lower cursor movable, upper cursor position fixed

Upper and lower cursor movable together

4. The cursor position

information appears on the top left hand side of the screen.

Time: cursor 1, cursor 2

Voltage/Current: cursor1, cursor2

Delta (difference between cursors)

5. Use the Variable knob to move the

cursor(s) up or down.

VARIABLE

Up Down

Use Vertical Cursors

GDS-3000 Series User Manual

Example

Horizontal

cursors

Vertical cursors

FFT Math

The FFT Math has different content. For FFT math details, see page 85.

Frequency/Time: cursor1, cursor2

dB/V: cursor1, cursor2

Delta (difference between cursors)

Example

Horizontal

cursors

Vertical cursors

MEASUREMENT

XY Mode

XY mode cursors measure a number of X by Y measurements.

Cursor

Rectangular, polar co-ordinates, product, ratio.

Cursor

Rectangular, polar co-ordinates, product, ratio.

Delta (difference between cursors)

Example

Horizontal

cursors

Vertical cursors

GDS-3000 Series User Manual

Background

Math operation runs addition, subtraction, multiplication, division or FFT using the input signals or reference waveforms (Ref1~4) and shows the result on the display. The resulted waveform characteristics can be measured using the cursors.

Addition (+)

Adds the amplitude of two signals.

Source

CH1~4, Ref1~4

Subtraction (–)

Extracts the amplitude difference between two signals.

Source

CH1~4, Ref1~4

Multiplication (×)

Multiplies the amplitude of two signals.

Source

CH1~4, Ref1~4

Division (÷)

Divides the amplitude of two signals.

Source

CH1~4, Ref1~4

FFT

Runs FFT calculations on a signal. Four types of FFT windows are available: Hanning, Hamming, Rectangular, and Blackman.

Source

CH1~4, Ref1~4

Hanning FFT Window

Frequency resolution

Good

Amplitude resolution

Not good

Suitable for....

Frequency measurement on periodic waveforms

Math Operation

Overview

MEASUREMENT

Hamming FFT Window

Frequency resolution

Good

Amplitude resolution

Not good

Suitable for....

Frequency measurement on periodic waveforms

Rectangular FFT Window

Frequency resolution

Very good

Amplitude resolution

Bad

Suitable for....

Single-shot phenomenon (this mode is the same as having no window at all)

Blackman FFT Window

Frequency resolution

Bad

Amplitude resolution

Very good

Suitable for....

Amplitude measurement on periodic waveforms

Panel Operation

1. Press the Math key.

2. Press the Math key on the lower

bezel.

3. Select Source 1 from the side menu

Range

CH1~4, Ref~4

4. Press Operator to choose the math

operation.

Range

+, -, ×, ÷

Addition/Subtraction/Multiplication/Division

GDS-3000 Series User Manual

5. Select Source 2 from the side menu.

Range

CH1~4, Ref~4

6. The math measurement result appears on the

display. The vertical scale of the math waveform appears at the bottom of the screen.

From left: Math function, source1, operator, source2, Unit/div

Example

Math

Source 2

Source 1

Position and Unit

To move the math waveform vertically, press the Position key from the side menu and use the variable knob to set the position.

To change the unit/div settings, press Unit/div, then use the variable knob change the unit/div.

Range

2mV~1kV (1-2-5 steps)

Turn Off Math

To turn off the Math result from the display, press the Math key again.

FFT

Panel Operation

1. Press the Math key.

2. Press FFT from the bottom menu.

3. Select the Source from the side

menu.

Range

CH1~4, Ref~4

4. Press the Vertical Units key from

the side menu to select the vertical units used.

Range

Linear RMS, dBV RMS

5. Press the Window key from the side

menu and select the window type.

Range

Hanning, Hamming, Rectangular, and Blackman.

6. The FFT result appears. For FFT, the horizontal

scale changes from time to frequency, and the vertical scale from voltage/current to dB/RMS.

MEASUREMENT

GDS-3000 Series User Manual

Math

Source

Position and Unit

To move the FFT waveform vertically, press Position and use the variable knob.

Range

–12.00 Div ~ +12.00 Div

To select the vertical scale of FFT waveform, press Unit/div and use the variable knob.

Range

2mV~1kV RMS, 1~20 dB

Clear FFT

To clear the FFT result from the display, press the Math key again.

MEASUREMENT

Background

The APP. function allows different applications to be run. Applications can be downloaded from the GW Instek website.

Included Applications

GO-NOGO

The GO_NOGO application can be used to set threshold boundaries for input signals. GO-NOGO checks if a waveform fits inside a user-specified maximum and minimum amplitude boundary (template).

Background

The APP. function can host a number of different applications that can be downloaded from the GW Instek website.

Panel Operation

1. Press the Test key.

Test

2. Press APP. from the bottom menu.

Applications

Overview

Running Applications

GDS-3000 Series User Manual

3. Scroll through each Application using the

Variable knob.

4. Select an application by pressing

the Select key twice.

Select

×2

Background

Any APP. function can be easily uninstalled using the Uninstall function.

Panel Operation

1. Press the Test key.

Test

2. Press APP. from the bottom menu.

Uninstalling Applications

MEASUREMENT

3. Scroll through each Application using the

Variable knob.

4. When the desired application is

highlighted, press Uninstall to begin the uninstallation. Press again to confirm.

×2

GDS-3000 Series User Manual

Background

The Go-NoGo test checks if a waveform fits inside a user-specified maximum and minimum boundary (boundary template). Boundary templates are automatically created from a source channel. Boundary tolerance and violation conditions can be set.

Choose the Go_NoGo application from the APP. menu. See page 87.

Go-NoGo Conditions

Select the Go-NoGo conditions (When) and actions when a Go-NoGo condition has been met (Violating).

1. Press When from the bottom menu

and use the Variable knob to select the When condition.

When

Exits: Sets the NoGo condition to when the input signal exceeds the limit boundary.

Using Go_NoGo

MEASUREMENT

Enters: Sets the NoGo condition to when the input signal stays within the limit boundary.

2. Press When again to change the

menu to Violating. Use the Variable knob to choose the action for when a violation occurs.

Violating

Stop: The waveform will be frozen.

Stop_Beep: The waveform will be frozen and a beep will be output.

Continue: Ignore the violation.

Continue_Beep: Output a beep, but continue to monitor the signal.

Source

1. Press Compare Source from the

bottom menu and use the Variable knob to select the source.

Source

CH1, CH2, CH3, CH4

Tolerance Boundary

1. To set a tolerance, press Compare

Source again to toggle the menu to Auto Tolerance. Use the Variable

knob to choose the tolerance as a percentage.

Violating

0.4% ~ 40% (.4% steps)

Note

If a tolerance is set, the maximum and minimum boundary is reset as the tolerance boundary.

GDS-3000 Series User Manual

Maximum and Minimum

1. To set a maximum and minimum

boundary, press Minimum Position from the bottom menu and use the Variable knob to select the absolute minimum position.

Position

Voltage division range

2. Press Minimum Position again to

toggle the menu to Maximum Position. Choose the maximum position.

Position

Voltage division range

Note

If a maximum and minimum boundary is set, the tolerance will be disabled.

Save Boundary Limits

1. Select a Maximum Position or a

Tolerance from the lower menu.

2. To save the Go-NoGo test

parameters, press Save Operation. The Maximum position will be saved to R1. The tolerance waveforms will be saved to R1 and R2.

3. If a Maximum Position was saved,

repeat the save procedure for Minimum Position. The Minimum position waveform will be saved to R2.

MEASUREMENT

Start Go-NoGo

Press Enable to start the Go-NoGo test. The Enable button will change to Disable. Pressing Disable will stop the Go-NoGo test and toggle the button back to Enable.

Exit the Application

To exit the application, press Break.

Using the GoNoGo Output

To output the Go-NoGo results to an external device, the Go-NoGo rear panel terminal (open collector) can be used. The Go-NoGo terminal will output a positive pulse each time a NoGo violation has occurred for a minimum of 10us. The voltage of the pulse depends on the external pull-up voltage.

The line out socket can also be used to connect directly to a buzzer.

Line Out

Timing Diagram

Output timing

Enable

Go-NoGo

Output

500us

Waveform

acquisition

When a No-Go violation occurs the Go-NoGo output will go from a low level to a high level for a minimum of 500us.

GDS-3000 Series User Manual

Circuit Diagram

Go-NoGo signal

220Ω

Go-NoGo

BNC

B+ CMOS (Max 16V)

Or TTL (Max 5V)

MEASUREMENT

Power Quality

Power quality measures the power of a signal using the measured voltage and current of a signal.

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 calculates the ripple and noise of the waveform.

Inrush Current

The inrush function automatically calculates the first peak and second peak inrush current.

Power Analysis

Power analysis 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, for details please see page 192. Please see the Power Analysis manual for more details on using the power analysis software.

Power Analysis Overview

GDS-3000 Series User Manual

UART

Universal Asynchronous Receiver Transmitter. The UART bus is able to accommodate a wide range of various common UART serial communications. The UART serial bus software is suitable for a number of RS-232 protocol variants.

Inputs

Tx, Rx

Threshold

Tx, Rx

Configuration

Baud rate, Parity, Packets, End of packets, Input polarity

Trigger On

Tx Start Bit, Rx Start Bit, Tx End of Packet, Rx End of Packet, Tx Data, Rx Data, Tx Parity Error, Rx Parity Error

I2C

Inter Integrated Circuit is a two line serial data interface with a serial data line (SDA) and serial clock line (SCLK). The R/W bit can be configured.

Inputs

SCLK, SDA

Serial Bus

The serial bus trigger and decode software includes support for 3 common serial interfaces, SPI (4 channel models only), UART and I2C. Each interface is fully configurable to accommodate a wide range of protocol variation.

Each input can be displayed as binary or hexadecimal. An event table can also be created to aid in debugging.

Note that the Serial bus trigger and decode software is an optional extra. An activation key is required to activate the software, for details please see page 192. Please see the Serial Bus Decode manual for more details on using the serial bus software.

Serial Bus Overview

MEASUREMENT

Threshold

SCLK, SDA

Configuration

Addressing mode, Read/Write in address

Trigger On

Start, Repeat Start, Stop, Missing Ack, Address, Data, Address/Data

SPI

The SPI (Serial Interface Peripheral) bus is fully configurable to accommodate the wide variety of SPI interfaces. This bus is only available on 4 channel models.

Inputs

SCLK, SS, MOSI, MISO

Threshold

SCLK, SS, MOSI, MISO

Configuration

SCLK edge, SS logic level, Word size, Bit order

Trigger On

SS Active, MOSI, MISO, MOSI&MISO

GDS-3000 Series User Manual

Acquisition ................................................................... 100

Select Acquisition Mode ..................................................... 100

Show Waveform in XY Mode........................................... 102

Set the Sampling Mode ....................................................... 104

Real time vs Equivalent Time Sampling Mode .............. 105

Display ......................................................................... 106

Display Waveform as Dots or Vectors ............................ 106

Set the Level of Persistence ............................................... 107

Set the Intensity Level ........................................................ 107

Set the Waveform Intensity Type ..................................... 109

Select Display Graticule...................................................... 110

Freeze the Waveform (Run/Stop).................................... 111

Turn Off Menu .................................................................... 111

Horizontal View ............................................................ 112

Move Waveform Position Horizontally .......................... 112

Select Horizontal Scale ....................................................... 113

Select Waveform Update Mode ........................................ 114

Zoom Waveform Horizontally ......................................... 115

Vertical View (Channel) ................................................. 117

Move Waveform Position Vertically ................................ 117

Select Vertical Scale ............................................................. 117

Select Coupling Mode ......................................................... 118

Set the Impedance ............................................................... 119

Invert Waveform Vertically ............................................... 119

Limit Bandwidth .................................................................. 120

Expand by Ground/Center ............................................... 121

Select Probe Type ................................................................ 122

Select Probe Attenuation Level ......................................... 123

Set the Deskew ..................................................................... 124

CONFIGURATION

Trigger .......................................................................... 125

Trigger Type Overview ...................................................... 125

Trigger Parameter Overview ............................................. 127

Setup Holdoff Level ........................................................... 131

Setup Trigger Mode ............................................................ 132

Using the Edge Trigger ...................................................... 132

Using Advanced Delay Trigger ......................................... 134

Using Pulse Width Trigger................................................. 135

Using Video Trigger ............................................................ 137

Pulse Runt trigger ................................................................ 138

Using Rise and Fall Trigger ............................................... 140

System Info / Language / Clock ..................................... 142

Select Menu Language ........................................................ 142

View System Information .................................................. 142

Erase Memory ...................................................................... 143

Set the Buzzer Volume ....................................................... 144

Set Date and Time ............................................................... 144

GDS-3000 Series User Manual

Background

The acquisition mode determines how the samples are used to reconstruct a waveform.

Sample

This is the default acquisition mode. Every sample from each acquisition is used.

Peak detect

Only the minimum and maximum value pairs for each acquisition interval (bucket) are used. This mode is useful for catching abnormal glitches in the signal.

Hi Resolution

Performs boxcar averaging on the samples. This reduces white noise and increases the vertical resolution of the waveform.

Average

Multiple acquired data is averaged. This mode is useful for drawing a noise-free waveform. To select the average number, use the Variable knob.

Average number: 2, 4, 8, 16, 32, 64, 128, 256

Panel Operation

1. Press the Acquire key.

Acquire

Acquisition

The Acquisition process samples the analog input signals and converts them into digital format for internal processing.

Select Acquisition Mode

100

Instek GDS-3152, GDS-3252, GDS-3352, GDS-3502, GDS-3154 User's Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

SAFETY INSTRUCTIONS

Safety Symbols

Safety Guidelines

Power cord for the United Kingdom

GETTING STARTED

GDS-3000 Series Overview

Series lineup

Main Features

Accessories

Package Contents

Appearance

GDS-3504/3354/3254/3154 Front Panel

GDS-3502/3352/3252/3152 Front Panel

Rear Panel

Display

Set Up

Tilt Stand

Power Up

First Time Use

How to Use This Manual

QUICK REFERENCE

Menu Tree / Operation Shortcuts

Convention

Acquire Key

Autoset Key

Auto-Range

CH1 ~ 4 Key

Cursor Key

Display Key

Help Key

Math Key

Measure Key

Print/Save Key

Run/Stop Key

REF Key

Save/Recall Key

Test Key

Test Key – Go-NoGo

Trigger Type Menu

Trigger Edge Menu

Trigger Delay Menu

Trigger Pulse Width Menu

Trigger Video Menu

Trigger Pulse Runt Menu

Trigger Rise & Fall Menu

Utility Key

Utility Key – I/O

Utility Key – File Utilities

Zoom Key

Default Settings

Built-in Help

MEASUREMENT

Basic Measurement

Channel Activation

Autoset

Auto-Range

Run/Stop

Horizontal Position/Scale

Vertical Position/Scale

Split Window Mode

Automatic Measurement

Measurement Items

Individual Mode

Remove Measurement

Gated mode

Display All mode

Cursor Measurement

Use Horizontal Cursors

Use Vertical Cursors

Math Operation

Overview

Addition/Subtraction/Multiplication/Division

Applications

Overview

Running Applications

Uninstalling Applications