GW Instek GDS-1000-U Series, GDS-1072-U, GDS-1102-U, GDS-1052-U User Manual

Digital Storage Oscilloscope

GDS-1000-U Series

USER MANUAL

GW INSTEK PART NO. 82DS-112AUEB1

ISO-9001 CERTIFIED MANUFACTURER

April 2013 edition

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 Corporation.

The information in this manual was correct at the time of printing.
However, Good Will continues to improve its products and therefore
reserves the right to change the specifications, 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

3

Table of Contents

SAFETY INSTRUCTIONS .................................. 8

Safety Symbols ....................................................................... 8

Safety Guidelines .................................................................... 9

Power cord for the United Kingdom .................................... 12

GETTING STARTED ........................................ 13

Main Features ................................................................... 13

Panel Overview .................................................................. 15

Front Panel ........................................................................... 15

Rear Panel ............................................................................. 19

Display .................................................................................. 20

Setting up the Oscilloscope ............................................... 21

QUICK REFERENCE ....................................... 24

Menu Tree and Shortcuts................................................... 24

CH1/CH2 key ....................................................................... 25

Cursor key 1/2 ...................................................................... 26

Cursor key 2/2 ...................................................................... 26

Display key ............................................................................ 27

Autoset key ........................................................................... 27

Hardcopy key ........................................................................ 27

Help key ................................................................................ 27

Horizontal menu key ............................................................ 28

Math key 1/2 (+/-) ................................................................ 28

Math key 2/2 (FFT) .............................................................. 29

Measure key.......................................................................... 30

Run/Stop key ........................................................................ 30

Save/Recall key 1/9 .............................................................. 31

Save/Recall key 2/9 .............................................................. 31

Save/Recall key 3/9 .............................................................. 32

Save/Recall key 4/9 .............................................................. 32

Save/Recall key 5/9 .............................................................. 33

Save/Recall key 6/9 .............................................................. 33

Save/Recall key 7/9 .............................................................. 34

Save/Recall key 8/9 .............................................................. 35

Save/Recall key 9/9 .............................................................. 35

Trigger key 1/5 ...................................................................... 36

Trigger key 2/5 ...................................................................... 36

GDS-1000-U Series User Manual

4

Trigger key 3/5 ..................................................................... 37

Trigger key 4/5 ..................................................................... 37

Trigger key 5/5 ..................................................................... 38

Utility key 1/10 (Utility #1) .................................................. 38

Utility 2/10 (Utility #2) ........................................................ 39

Utility key 3/10 (Utility #3) .................................................. 40

Utility key 4/10 (Hardcopy -Save All) ................................... 40

Utility key 5/10 (Hardcopy -Save Image) ............................. 40

Utility key 6/10 (Probe compensation) ............................... 41

Utility key 7/10 (Go-NoGo) ................................................. 41

Utility key 8/10 (Data Logging 1/2) ..................................... 42

Utility key 9/10 (Data Logging 2/2) ..................................... 42

Utility key 10/10 (Self CAL Menu) ....................................... 42

Default Settings ................................................................. 43

Built-in Help ...................................................................... 44

MEASUREMENT ............................................ 45

Basic Measurements ......................................................... 45

Activating a channel ............................................................. 45

Using Autoset ...................................................................... 46

Running and stopping the trigger ....................................... 47

Changing the horizontal position and scale........................ 48

Changing the vertical position and scale ............................ 49

Using the probe compensation signal ................................ 50

Automatic Measurements .................................................. 52

Measurement items ............................................................. 52

Automatically measuring the input signals ......................... 54

Cursor Measurements ....................................................... 55

Using the horizontal cursors ............................................... 55

Using the vertical cursors .................................................... 56

Math Operations ............................................................... 58

Overview ............................................................................... 58

Adding, subtracting or multiplying signals ......................... 59

Using the FFT function ........................................................ 59

Go No-Go Testing .............................................................. 61

Overview ............................................................................... 61

Edit: NoGo When ................................................................. 62

Edit: Source .......................................................................... 62

Edit: NoGo Violation Conditions ......................................... 63

Edit: Template (boundary) ................................................... 63

Run Go-NoGo Tests ............................................................ 67

Data Logging ..................................................................... 68

Overview ............................................................................... 68

TABLE OF CONTENTS

5

Edit: Source .......................................................................... 69

Edit: Setup Parameters ........................................................ 69

Run Data logging ................................................................. 71

CONFIGURATION .......................................... 72

Acquisition ........................................................................ 72

Selecting the acquisition mode ............................................ 72

Real time vs Equivalent time sampling mode ..................... 75

Display .............................................................................. 76

Selecting vector or dot drawing ........................................... 76

Accumulating the waveform ................................................ 76

Adjusting the display contrast ............................................. 77

Selecting the display grid ..................................................... 77

Horizontal View ................................................................. 78

Moving the waveform position horizontally ........................ 78

Selecting the horizontal scale .............................................. 78

Selecting the waveform update mode ................................. 79

Zooming the waveform horizontally .................................... 80

Viewing waveforms in the X-Y mode ................................... 81

Vertical View (Channel) ..................................................... 82

Moving the waveform position vertically ............................. 82

Selecting the vertical scale ................................................... 82

Selecting the coupling mode ............................................... 82

Inverting the waveform vertically ......................................... 83

Limiting the waveform bandwidth ....................................... 83

Trigger ............................................................................... 85

Trigger type ........................................................................... 85

Trigger parameter ................................................................. 85

Configuring the edge trigger ................................................ 87

Configuring the video trigger ............................................... 89

Configuring the pulse width trigger ..................................... 90

Manually triggering the signal ............................................. 91

Rear Panel USB Port Interface ........................................... 93

System Settings ................................................................. 94

Viewing the system information .......................................... 94

Selecting the language ......................................................... 94

SAVE/RECALL ................................................. 96

File Structures ................................................................... 96

Display image file format ..................................................... 96

Waveform file format ........................................................... 96

Setup file format ................................................................... 98

GDS-1000-U Series User Manual

6

Using the USB file utilities ................................................... 99

Quick Save (HardCopy) ................................................... 101

Save ................................................................................ 103

File type/source/destination.............................................. 103

Saving the panel settings ................................................... 104

Saving the waveform .......................................................... 105

Saving the display image ................................................... 106

Saving all (panel settings, display image, waveform) ....... 108

Recall .............................................................................. 110

File type/source/destination.............................................. 110

Recalling the default panel settings ................................... 111

Recalling a reference waveform to the display .................. 112

Recalling panel settings ..................................................... 112

Recalling a waveform ......................................................... 113

MAINTENANCE ........................................... 116

Vertical Resolution Calibration ........................................ 116

Probe Compensation ....................................................... 117

FAQ .............................................................. 119

The input signal does not appear in the display. .............. 119

I want to remove some contents from the display. .......... 119

The waveform does not update (frozen). .......................... 120

The probe waveform is distorted. ...................................... 120

Autoset does not catch the signal well. ............................. 120

I want to clean up the cluttered panel settings. ................ 120

The saved display image is too dark on the background. . 120

The accuracy does not match the specifications. ............. 121

APPENDIX .................................................... 122

Fuse Replacement ........................................................... 122

GDS-1000-U Series Specifications ................................... 123

Model-specific specifications ............................................ 123

Common specifications ..................................................... 124

Probe Specifications ........................................................ 126

GDS-1052-U & GDS-1072-U Probe ................................... 126

GDS-1102-U Probe ............................................................. 127

Dimensions ........................................................................ 128

EC Declaration of Conformity .......................................... 129

TABLE OF CONTENTS

7

INDEX .......................................................... 130

GDS-1000-U Series User Manual

8

SAFETY INSTRUCTIONS

This chapter contains important safety instructions
that should be followed when operating and
storing the oscilloscope. Read the following before
any operation to ensure your safety and to keep
the oscilloscope in the best condition.

Safety Symbols

These safety symbols may appear in this manual or on the
oscilloscope.

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 oscilloscope or to
other objects or property.

DANGER High Voltage

Attention: Refer to the Manual

Protective Conductor Terminal

Earth (Ground) Terminal

SAFETY INSTRUCTIONS

9

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.

Safety Guidelines

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 heavy objects on the oscilloscope.
 Avoid severe impact or rough handling that

may damage the oscilloscope.

 Avoid discharges of static electricity on or near

the oscilloscope.

 Use only mating connectors, not bare wires, for

the terminals.

 Do not block the cooling fan vent.
 Do not perform measurements at power sources

and building installation sites (Note below).

 The oscilloscope should only be disassembled

by a qualified technician.

(Measurement categories) EN 61010-1:2001 specifies the
measurement categories and their requirements as follows. The
GDS-1000-U falls under category II.

 Measurement category IV is for measurement performed at the

source of a low-voltage installation.

 Measurement category III is for measurement performed in a

building installation.

 Measurement category II is for measurement performed on

circuits directly connected to a low voltage installation.

 Measurement category I is for measurements performed on

circuits not directly connected to Mains.

GDS-1000-U Series User Manual

10

Power Supply

WARNING

 AC Input voltage: 100 ~ 240V AC, 47 ~ 63Hz
 The power supply voltage should not fluctuate

more than 10%.

 Connect the protective grounding conductor of

the AC power cord to an earth ground.

Fuse

WARNING

 Fuse type: T1A/250V
 To ensure fire protection, replace the fuse only

with the specified type and rating.

 Disconnect the power cord before replacing the

fuse.

 Make sure the cause of fuse blowout is fixed

before replacing the fuse.

Cleaning the
oscilloscope

 Disconnect the power cord before cleaning the

oscilloscope.

 Use a soft cloth dampened in a solution of mild

detergent and water. Do not spray any liquid
into the oscilloscope.

 Do not use chemicals containing harsh products

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%, 40°C or below

≤ 45%, 41°C~50°C

 Altitude: < 2000m
 Temperature: 0°C to 50°C

SAFETY INSTRUCTIONS

11

(Pollution Degree) EN 61010-1:2001 specifies pollution degrees and
their requirements as follows. The oscilloscope falls under degree 2.

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
 Storage Temperature: -10°C~60°C, no

condensation-

 Relative Humidity: 93% @ 40°C

65% @ 41°C ~60°C

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.

GDS-1000-U Series User Manual

12

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:

Green/ Yellow:

Earth

Blue:

Neutral

Brown:

Live (Phase)

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.

GETTING STARTED

13

GETTING STARTED

The Getting started chapter introduces the

oscilloscope’s main features, appearance, and set

up procedure.

Main Features

Model name

Frequency bandwidth

Input channels

GDS-1052-U

DC –50MHz (–3dB)

2

GDS-1072-U

DC – 70MHz (–3dB)

2

GDS-1102-U

DC – 100MHz (–3dB)

2

Performance

 250MSa /S real-time sampling rate
 25GS/s equivalent-time sampling rate
 Up to 10ns peak detection
 2mV~10V vertical scale

Features

 5.7 inch color TFT display
 Saving and recalling setups and waveforms
 19 automatic measurements
 Multi-language menu (12 languages)
 Math operation: Addition, Subtraction, FFT
 Data logging
 Go-NoGo testing
 Edge, video, pulse width trigger
 Compact size: (W) 310 x (D) 140 x (H) 142 mm

GDS-1000-U Series User Manual

14

Interface

 USB 2.0 full-speed interface for saving and

recalling data

 Calibration output
 External trigger input
 USB B type (slave) interface for remote control

GETTING STARTED

15

Panel Overview

Front Panel

LCD
Display

Function

keys

V ARIABLE

knob

Menu keys

Trigger

LEVEL knob

Trigger

keys

Ground

Terminal

CH1

terminal

USB port

port

CH2

terminal

Probe
compensation
output

EXT TRIG

terminal

Power
switch

Horizontal

POSITION

knob

Horizontal

MENU key

TIME/ DIV
knob

CH1/CH2/

MATH keys

Vertical

POSITION

knob

VOLTS/DIV

knob

. .

VOLTS / DIV VOLTS / DIV TIME/ DIV

CH 1 MATH CH 2 MENU MENU

Acquire Display Utility Help

Run/ Stop

VARIABLE

FORCE

Autoset

Cursor

SINGLE

HardcopyMeasure Save/ Recall

LEVEL

VERTICAL HORIZONTAL TRIGGER

CH 1

CAT300V

MW15pF

MAX. 300 Vpk

1

CH2 EXT TRIG

CAT300V

MW15pF

MAX. 300 Vpk

1

X Y

40MHz 1GS /Sa

Digital Storage Oscilloscope

GDS - 1042-U

LCD display

TFT color, 320 x 234 resolution, wide angle view
LCD display.

Function keys:
F1 (top) to
F5 (bottom)

Activates the functions which
appear in the left side of the LCD
display.

Variable knob

VARIABLE

Increases or decreases values and
moves to the next or previous
parameter.

Acquire key

Acquire

Configures the acquisition mode
(page 72).

Display key

Display

Configures the display settings
(page 76).

Cursor key

Cursor

Runs cursor measurements (page

55).

(Continued on next page)

GDS-1052-U

GDS-1000-U Series User Manual

16

Utility key

Utility

Configures the Hardcopy function
(page 101), shows the system
status (page 94), selects the menu
language (page 94), runs the self
calibration (page 116), configures
the probe compensation signal
(page 117), and selects the USB
host type (page 93).

Help key

Help

Shows the Help contents on the
display (page 44).

Autoset key

Autoset

Automatically configures the
horizontal, vertical, and trigger
settings according to the input
signal (page 46).

Measure key

Measure

Configures and runs automatic
measurements (page 52).

Save/Recall key

Save/Recall

Saves and recalls images,
waveforms, or panel settings
(page 96).

Hardcopy key

Hardcopy

Stores images, waveforms, or
panel settings to USB (page 101).

Run/Stop key

Run/Stop

Runs or stops triggering (page 47).

Trigger level knob

LEVEL

TRIGGER

Sets the trigger level (page 85).

Trigger menu key

MENU

Configures the trigger settings
(page 85).

Single trigger key

SINGLE

Selects the single triggering mode
(page 91).

Trigger force key

FORCE

Acquires the input signal once
regardless of the trigger condition
at the time (page 91).

GETTING STARTED

17

Horizontal menu
key

MENU

Configures the horizontal view
(page 78).

Horizontal
position knob

Moves the waveform horizontally
(page 78).

TIME/DIV knob

TIME/DIV

Selects the horizontal scale (page

78).

Vertical position
knob

Moves the waveform vertically
(page 82).

CH1/CH2 key

CH 1

Configures the vertical scale and
coupling mode for each channel
(page 82).

VOLTS/DIV knob

VOLTS/DIV

Selects the vertical scale (page 82).

Input terminal

CH1

Accepts input signals: 1MΩ±2%

input impedance, BNC terminal.

Ground terminal

Accepts the DUT ground lead to
achieve a common ground.

MATH key

MATH

Performs math operations (page

58).

USB port

Facilitates transferring waveform
data, display images, and panel
settings (page 99).

Probe
compensation
output

Outputs a 2Vp-p, square signal for
compensating the probe (page

117) or demonstration.

External trigger
input

EXT TRIG

Accepts an external trigger signal
(page 85).

GDS-1000-U Series User Manual

18

Power switch

Powers the oscilloscope on or off.

GETTING STARTED

19

Rear Panel

LINE VOLTAGE

AC 100 240V

FUSE RATING

RANGE

T1A 250V

FREQUENCY 50 60Hz

POWER MAX. 18W 40VA

USB portCAL outputPower cord socketFuse socket

Security lock
slot

Power cord
socket

Fuse socket

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

The fuse socket holds the AC main
fuse, T1A/250V.

For the fuse replacement
procedure, see page 122.

USB slave port

Accepts a type B (slave) male USB
connector for remote control of the
oscilloscope (page 93).

Calibration
output

Outputs the calibration signal used
in vertical scale accuracy calibration
(page 116).

Security lock slot

Standard laptop security lock slot
for ensuring the security of the
GDS-1000-U.

GDS-1000-U Series User Manual

20

Display

Waveform marker

Vertical status Horizontal status Frequency Trigger condition

Waveform position Trigger status Acquisition

Menu

Waveforms

Channel 1: Yellow

Channel 2: Blue

Trigger status

Trig’d

A signal is being triggered

Trig?

Waiting for a trigger condition

Auto

Updating the input signal
regardless of trigger conditions

STOP

Triggering is stopped

For trigger setting details, see page 84.

Input signal
frequency

Updates the input signal frequency (the trigger
source signal) in real-time.

“< 2Hz” Indicates that the signal frequency is less
than the lower frequency limit (2Hz) and thus not
accurate.

Trigger
configuration

Shows the trigger source, type, and slope. In case
of the Video trigger, shows the trigger source and
polarity.

Horizontal status

Vertical status

Shows the channel configurations: coupling mode,
vertical scale, and horizontal scale.

GETTING STARTED

21

Setting up the Oscilloscope

Background

This section describes how to set up the
oscilloscope properly including adjusting the
handle, connecting a signal, adjusting the scale,
and compensating the probe. Before operating the
oscilloscope in a new environment, run these steps
to make sure the oscilloscope is functionally stable.

Procedure

1. Pull both bases of

the handle out
slightly.

2. Turn to one of the three

preset positions.

3. Connect the power cord.

4. Press the power switch. The

display will become active
in approximately 10
seconds.

5. Reset the system by recalling

the factory settings. Press
the Save/Recall key, then
Default Setup. For details
regarding the factory
settings, see page 43.

Default

Setup

Save/Recall

GDS-1000-U Series User Manual

22

6. Connect the probe between the Channel1 input

terminal and probe compensation signal output
(2Vp-p, 1kHz square wave).

7. Set the probe attenuation voltage to x10.

VOLTS/DIV VOLTS/DIV TIME/DIV

CH 1 MATH CH 2 MENU MENU

Acquire

Display

Utility Help

Run/Stop

VARIABLE

FORCE

Autoset

Cursor

SINGLE

Hardcopy

Measure

Save/Recall

LEVEL

VERTICAL HORIZONTAL TRIGGER

CH1

CAT300V

MW15pF

MAX. 300Vpk

1

CH2 EXT TRIG

CAT300V

MW15pF

MAX. 300Vpk

1

X Y

X
10

X
1

CH1

x1

x10

8. Press the Autoset key. A

square waveform will
appear in the center of the
display. For details on
Autoset, see page 46.

Autoset

9. Press the Display key, then

Type and select the vector
waveform type.

Type

Vectors

Display

GETTING STARTED

23

10. Turn the adjustment point on the probe to

flatten the square waveform edge.

Over

Compensation

Normal

Under

Compensation

11. Setting up the oscilloscope is complete. You

may continue with the other operations.

Measurement: page 45

Configuration: page 72

GDS-1000-U Series User Manual

24

QUICK REFERENCE

This chapter lists the oscilloscope menu tree,
operation shortcuts, built-in help coverage, and
default factory settings. Use this chapter as a
handy reference to access the oscilloscope
functions.

Menu Tree and Shortcuts

Conventions

Examples

Normal

= Press the functional key for “Normal”

Average

= Repeatedly press the functional key for
“Average”

Normal ~ Average

= Select a menu from “Normal” to “Average” and

press its functionality key

Normal→VAR

= Press the functionality key for “Normal”, and

then use the Variable knob

QUICK REFERENCE

25

Normal

Peak

Detect

2/ 4/ 8/ 16/ 32/
64/ 128/ 256

Average

Sample Rate

500MS/s

Acquire

Select acquisition mode

Normal ~ Peak-Detect

Select average number

Average

Turn Delay on/off

CH1/CH2 key

On/Off

/ /

On/Off

(GDS-1102/1062-U)

x1/x10/x100

Coupling

Invert

Off

BW Limit

Off

Probe

x1

CH1

Turn channel on/off

CH 1/2

Select coupling mode

Coupling

Invert waveform

Invert

Turn bandwidth limit on/off

BW Limit

Select probe attenuation

↔Probe

On/Off

GDS-1000-U Series User Manual

26

Cursor key 1/2

CH1/ 2/ MATH

Source

CH1

X1

123.4us

212.0mV
X2

22.9us

0.000V

X1X2

23.6us

11.9Hz

212.0mV

X↔Y

Cursor

Turn cursor on/off

Cursor

Move X1 cursor

X1→ VAR

Move X2 cursor

X2→ VAR

Move both X1 and X2 cursor

X1X2→ VAR

Switch to Y cursor

X↔Y

Cursor key 2/2

CH1/ 2/ MATH

Source

CH1

X↔ Y

Cursor

Y1

123.4mV
Y2

12.9mV
Y1Y2

10.5mV

Turn cursor on/off

Cursor

Move Y1 cursor

Y1→ VAR

Move Y2 cursor

Y2→ VAR

Move both Y1 and Y2 cursor

Y1Y2→ VAR

Switch to X cursor

X↔Y

QUICK REFERENCE

27

Display key

Vectors/ Dots

Type

Vectors

On/ Off

Accumulate

Off

Refresh

Contrast

Full

/ /

Display

Select waveform type

Type

Waveform accumulate On/Off

Accumulate

Refresh accumulation

Refresh

Set display contrast

Contrast →VAR

Select display grid

Autoset key

Autoset

Automatically find the signal and set the scale

Autoset

Hardcopy key

Hardcopy

→ See Utility key (page 38)

Help key

Help

Turn help mode on/off

Help

GDS-1000-U Series User Manual

28

Horizontal menu key

Main

Window
Window

Zoom

XY

Roll

MENU

Select main (default) display

Main

Select window mode

Window →TIME/DIV

Zoom in window mode

Window Zoom

Select window roll mode

Roll

Select XY mode

XY

Math key 1/2 (+/-)

Operation

CH1+CH2

Position

0.00 Div
Unit/Div

2V

-12div ~ +12div

CH1+CH2
CH1-CH2
FFT

MATH

200mV~10V/div

Math on/off

Math

Select math operation type (+/–
/FFT)

Operation

Set result position

Position →VAR

Math result Volt/Div

Unit/Div→VAR

QUICK REFERENCE

29

Math key 2/2 (FFT)

Operation

FFT

Source

CH1

Position

0.00Div

-12 Div~ + 12Div

Unit/Div

1dB

20/10/5/2/1 dB

Window

Hanning

Flattop
Rectangular

Blackman
Hanning

CH1/2

MATH

CH1+CH2
CH1-CH2
FFT

Math on/off

Math

Select math operation type (+/–/
/FFT)

Operation

Select FFT source channel

Source

Select FFT window

Window

Select FFT result position

Vertical →VAR

Select vertical scale

Unit/Div

GDS-1000-U Series User Manual

30

Measure key

Voltage

Vpp

Previous

Menu

Voltage/Time

Vpp

1:204mV
2: 300mV

Vavg

1: 1.93mV
2: 28.0mV

Frequency

1: 1.000kHz
2: 3.003kHz

Duty Cycle

1: 50.01%
2: 49.88%

Rise Time

1. 76.20us

2. 70.11us

Measure Measure

Turn on/off measurement

Measure

Select measurement type

Voltage/Time

Select measurement item

VAR or Icon(F3) / → VAR

Go back to previous menu

Previous Menu

Run/Stop key

Run/Stop

Freeze/unfreeze waveform or trigger

Run/Stop