Rigol Technologies DS1052D, DS1102D, DS1052E, DS1102E User Manual

User’s Guide RIGOL

Publication number UGA07107-1110

July 2008

DS1000E, DS1000D Series

Digital Oscilloscopes

DS1102E, DS1052E, DS1102D, DS1052D

RIGOL

I

 © 2008 RIGOL Technologies, Inc. All Rights Reserved  RIGOL products are protected by patent law in and outside of P.R. China.  Information in this publication replaces all previously corresponding material.  RIGOL Technologies, Inc. reserves the right to modify or change part of or all

the specifications and pricing policies at company’s sole decision.

NOTE: RIGOL is registered trademark of RIGOL Technologies, Inc.

User’s Guide for DS1000E, DS1000D Series

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II

Safety Notices

Review the following safety precautions carefully before operating the instrument to avoid any personal injuries or damages to the instrument and any products connected to it. To avoid potential hazards use the instrument as specified by this user’s guide only.

The instrument should be serviced by qualified personnel only.

To Avoid Fire or Personal Injury

Use Proper Power Cord. Use the power cord designed for the instrument and

authorized in your country only.

Connect and Disconnect Accessories. Do not connect or disconnect probes or test leads while they are connected to a voltage source

Ground The Instrument. The oscilloscope is grounded through the grounding conductor of the power cord. To avoid electric shock the instrument grounding conductor(s) must be grounded properly. Before making connections to the input or output terminals of the instrument.

Connect The Probe. The probes’ ground terminals are at the same voltage level of the instrument ground. Do not connect the ground terminals to a high voltage.

Observe All Terminal Ratings. To avoid fire or shock hazard, observe all ratings and marks on the instrument. Follow the user’s guide for further ratings information before making connections to the instrument.

Do Not Operate Without Covers. Do not operate the instrument with covers or panels removed.

Use Proper Fuse. Use the fuse of the type, voltage and current ratings as specified for the instrument.

Avoid Circuit or Wire Exposure. Do not touch exposed connections and components when power is on.

Do Not Operate With Suspected Failures. If suspected damage occurs with the instrument, have it inspected by qualified service personnel before further operations.

User’s Guide for DS1000E, DS1000D Series

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III

Provide Proper Ventilation. Refer to the installation instructions for proper ventilation of the instrument.

Do not operate in wet/damp conditions

Do not operate in an explosive atmosphere

Keep product surfaces clean and dry

The disturbance test of all the models meet the limit values of A in the standard of EN 61326: 1997+A1+A2+A3, but can’t meet the limit values of B.

Measurement Category

The DS1000E, DS1000D series Digital Oscilloscope is intended to be used for measurements in Measurement Category I.

Measurement Category Definitions

Measurement Category I is for measurements performed on circuits not directly connected to MAINS. Examples are measurements on circuits not derived from MAINS, and specially protected (internal) MAINS derived circuits. In the latter case, transient stresses are variable; for that reason, the transient withstand capability of the equipment is made known to the user.

WARNING

IEC Measurement Category I. The input terminals may be connected to circuit terminal in IEC Category I installations for voltages up to 300 VAC. To avoid the

danger of electric shock, do not connect the inputs to circuit’s voltages above 300

VAC. Transient overvoltage is also present on circuits that are isolated from mains. The DS1000E, DS1000D series Digital Oscilloscopes is designed to safely withstand occasional transient overvoltage up to 1000Vpk. Do not use this equipment to measure circuits where transient overvoltage could exceed this level.

User’s Guide for DS1000E, DS1000D Series

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IV

!

Hazardous

Voltage

Refer to

Instructions

Protective

Earth Terminal

Test

Grounding

Terminal

Grounding

Terminal of

Chassis

!

Safety Terms and Symbols

Terms in This Guide. These terms may appear in this guide:

WARNING: Warning statements identify conditions or practices that could result in injury or loss of life.

CAUTION: Caution statements identify conditions or practices that could result in damage to this product or other property.

Terms on the Product: These terms may appear on the product:

DANGER indicates an injury hazard may be immediately accessible.

WARNING indicates an injury hazard may be not immediately accessible.

CAUTION indicates that a potential damage to the instrument or other property

might occur.

Symbols on the Product: These symbols may appear on the Instrument:

User’s Guide for DS1000E, DS1000D Series

V

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General-Purpose Oscilloscopes

This book covers the following four types of DS1000E, DS1000D Series Digital Oscilloscopes: DS1102E, DS1052E, DS1102D, DS1052D. (With Logic Analyzer)

RIGOL DS1000E, DS1000D Series Digital Oscilloscopes provide exceptional waveform viewing and measurements in a compact, lightweight package. The DS1000E, DS1000D series is ideal for production test, field service, research, design, education and training applications involving analog/digital circuits test and troubleshooting, as well as education and training.

Features of DS1000E, DS1000D Series:

 Dual Channel, Bandwidth:

100MHz (DS1102E, DS1102D) 50MHz (DS1052E, DS1052D)

 Optional 16 digital channels (DS1000D series), each channel can be turned on

or off independently, or in a 8 bit group

 Mono/Color TFT LCD Displays at 320× 234 resolution  USB storage and printing supports, software upgradeable via USB connectivity  Adjustable waveform intensity, more effective waveform viewing  One-touch automatic setup for ease of use (AUTO)  Saves 10 Waveforms, 10 setups, supports CSV and bitmap format  Newly designed Delayed Scan Function, easy to give attention to both details

and overview of a waveform

 20 Automatic measurements  Automatic cursor tracking measurements  Waveform recorder, record and replay dynamic waveforms  User selectable fast offset calibration  Built-in FFT function, Frequency Counter  Digital filters, includes LPF, HPF, BPF, BRF  Pass/Fail Function, optically isolated Pass/Fail output  Add, Subtract and Multiply Mathematic Functions  Advanced trigger types include: Edge, Video, Pulse width, Slope, Alternative,

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Pattern and Duration (DS1000D series)

 Adjustable trigger sensitivity  Multiple Language User Interface  Pop-up menu makes it easy to read and easy to use  Built-in Chinese and English help system  Easy-to-use file system supports Chinese & English characters input

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VII

Content

Safety Notices .......................................................................................... II

General-Purpose Oscilloscopes ................................................................... V

Chapter 1 : Getting Started ............................................................... 1-1

The Front Panel and User Interface .......................................................... 1-2

To Inspect the Instrument ....................................................................... 1-5

To Perform a Functional Check ................................................................. 1-6

To Compensate Probes ............................................................................ 1-8

Digital Leads (DS1000D Series) ................................................................ 1-9

To Display a Signal Automatically ........................................................... 1-11

To Understand the Vertical System ......................................................... 1-12

To Understand the Horizontal System ..................................................... 1-14

To Trigger the Oscilloscope .................................................................... 1-16

Chapter 2 : Operating Your Oscilloscope ........................................... 2-1

To Set up the Vertical System .................................................................. 2-2

Settings of the Channels ..................................................................... 2-2

Math Functions ................................................................................ 2-13

Using REF ....................................................................................... 2-16

Set up LA Channel (DS1000D Series) ................................................. 2-23

Turn on/off Channels ........................................................................ 2-28

Set up Vertical Position and Scale ...................................................... 2-29

To Set up the Horizontal System............................................................. 2-30

To Set up the Trigger System ................................................................. 2-36

Settings for Edge Trigger .................................................................. 2-38

Settings for Pulse Width Trigger ......................................................... 2-39

Settings for Video Trigger .................................................................. 2-41

Slope Trigger ................................................................................... 2-45

Alternative Trigger ............................................................................ 2-47

Pattern Trigger (DS1000D Series) ...................................................... 2-51

Duration Trigger (DS1000D Series) .................................................... 2-53

Trigger Setup ................................................................................... 2-55

To Set up the Sampling System .............................................................. 2-61

To Set up the Display System ................................................................. 2-65

To Store and Recall ............................................................................... 2-67

To Set up the Utility .............................................................................. 2-75

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The I/O setup ................................................................................. 2-77

Preference ...................................................................................... 2-78

Self-Calibration ................................................................................ 2-79

Pass/Fail ......................................................................................... 2-80

Mask Setting ................................................................................... 2-81

Print Setting .................................................................................... 2-85

Waveform Recorder ......................................................................... 2-86

Language ....................................................................................... 2-91

To Measure Automatically ..................................................................... 2-92

The automatic measurement of voltage parameters ............................ 2-96

The automatic measurement of time parameters ................................ 2-97

To Measure with Cursors ....................................................................... 2-98

Manual Mode .................................................................................. 2-99

Track Mode .................................................................................... 2-102

Auto mode ..................................................................................... 2-104

To Use Run Control Buttons ................................................................. 2-105

Chapter 3 : Application & Examples ................................................... 3-1

Example 1: Taking Simple Measurements ................................................. 3-1

Example 2: View a Signal Delay Caused by a Circuit ................................... 3-2

Example 3: Capture a Single-Shot Signal .................................................. 3-3

Example 4: To Reduce the Random Noise on a Signal ................................ 3-4

Example 5: Making Cursor Measurements ................................................. 3-6

Example 6: The application of the X-Y operation ....................................... 3-8

Example 7: Triggering on a Video Signal ................................................. 3-10

Example 8: FFT Cursor measurement ..................................................... 3-12

Example 9: Pass/Fail Test...................................................................... 3-14

Example 10: Triggering on a Digital Signal .............................................. 3-15

Chapter 4 : Prompt Messages & Troubleshooting .............................. 4-1

Prompting Message ................................................................................ 4-1

Troubleshooting ..................................................................................... 4-3

Chapter 5 : Specifications .................................................................. 5-1

Specifications ......................................................................................... 5-2

General Specifications ............................................................................. 5-6

Chapter 6 : Appendix ......................................................................... 6-1

Appendix A: Accessories .......................................................................... 6-1

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Appendix B: Warranty ............................................................................. 6-2

Appendix C: Care and Cleaning ................................................................ 6-3

Appendix D: Contact RIGOL .................................................................... 6-4

Index ................................................................................................... 6-1

User’s Guide for DS1000E, DS1000D Series

1-1

Chapter 1 : Getting Started

This chapter covers the following topics:

 The front panel and user interface  To inspect the instrument  To perform a functional check  To compensate probes  To use digital leads  To display a signal automatically  To understand the vertical system  To understand the horizontal system  To trigger the oscilloscope

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The Front Panel and User Interface

The first thing to do with a new oscilloscope is to know its front panel. This chapter helps to be familiar with the layout of the knobs and keys and how to use them. Read the chapter carefully before further operations.

Figure 1- 1, Front Panel; the knobs are used most often and are similar to the knobs on other oscilloscopes. The buttons allow you to use some of the functions directly but also bring up soft button menus on the screen, which enable the access to many measurement features associated with advanced functions, mathematics, and reference or to run control features.

 The front panel of DS1000E:

 The front panel of DS1000D:

Figure 1- 1

Front Panel Figure of DS1000E, DS1000D Series Oscilloscope

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1-3

Multi-function Common Menu Run Control

Knob Buttons Buttons

Trigger Control

Horizontal Control

Vertical Control

USB Host Logic Analyzer Port Signal Input EXT Trigger Probe Channel Input Compensation

Figure 1- 2

Front Panel Instruction

Notation definitions in this User’s Guide:

Throughout this manual, notation symbols of buttons and knobs are the same to

those on front-panel.

 A box around the name of the key denotes MENU function buttons on

front-panel, such as Measure.

 ( ) denotes the multi-function knob .  denotes the two POSITION knobs.  denotes the two SCALE knobs.  denotes the LEVEL knob.  The name with a drop shadow denotes the menu operating key, such as

WAVEFORM soft key in STORAGE menu.

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Waveform display window

Menu

Channel 1

Channel 2

Running status

Location of waveform window in memory

Trigger point in waveform window

Digital channels

Digital channels turned off

Running status

Channel 1

Digital channels

Channel coupling and vertical div.

Horizontal time base div.

Trigger offset

Trigger point in memory

Figure 1- 3

Display screen (Analog channels only)

Figure 1- 4

User Interface (Analog and Digital channels)

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To Inspect the Instrument

When you get a new DS1000E, DS1000D series oscilloscope, please inspect the instrument according to the following steps:

1. Inspect the shipping container for damage.

Keep a damaged shipping container or cushioning material until the contents of the shipment have been checked for completeness and the instrument has been checked mechanically and electrically.

2. Check the accessories.

Accessories supplied with the instrument are listed in " in this guide.

If the contents are incomplete or damaged, please notify your RIGOL Sales Representative.

3. Inspect the instrument.

In case there is any mechanical damage or defect, or the instrument does not operate properly or fails performance tests, please notify the RIGOL Sales Representative.

If the shipping container is damaged, or the cushioning materials show signs of stress, please notify the carrier as well as the RIGOL sales office. Keep the shipping materials for the carrier’s inspection.

RIGOL offices will arrange for repair or replacement at RIGOL’s option without waiting for claim settlement.

Appendix A: Accessories

"

User’s Guide for DS1000E, DS1000D Series

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1-6

Power button

Storage button

!

To Perform a Functional Check

Perform this quick functional check to verify that the instrument is operating correctly.

1. Turn on the instrument.

 Use the power cord designed for the oscilloscope only.  Use a power source that delivers 100 to 240 VAC

, 45Hz to 440Hz.

RMS

 Turn on the instruments, and wait until the display shows the waveform window.  Push the Storage button, select Storage in the top menu box and push the

Factory menu box.

Figure 1- 5

Turn on and Check the instrument

WARNNING:

To avoid electric shock, be sure the oscilloscope is properly grounded.

2．Input a signal to a channel of the oscilloscope

DS1000E series: 2 channels input + 1 external trigger channel input DS1000D series: 2 channels input + 1 external trigger channel input +16 channels digital input

Do the following steps:

① Set the switch on the probe to 10X and connect the probe to Channel 1 on the

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1-7

oscilloscope:

Probe compensator

Probe scale

 Align the slot in the probe connector with the key on the CH 1 BNC.  Push to connect, and twist to the right to lock the probe in place.

Attach the probe tip and ground lead to the PROBE COMP connector.

Figure 1- 6

Attach the probe

② Set the probe attenuation to 10X. To do this, push CH1→Probe→10X.

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Figure 1- 7 Figure 1- 8

Set attenuation on the probe Set attenuation in the menu

③ Push the AUTO button. Within a few seconds, a square wave will display.

④ Push the OFF button or push the CH1 button again to turn off Channel 1.

Push the CH2 button to turn on channel 2, repeat steps 2 and 3.

NOTE: The signal output from Probe compensator should only be used for probe compensation, not for calibration.

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!

To Compensate Probes

Perform this adjustment to match the characteristics of the probe and the channel input. This should be performed whenever attaching a probe to any input channel for the first time.

1. From CH1 menu, set the Probe attenuation to 10X (press CH1→Probe→10X). Set the switch to 10X on the probe and connect it to CH1 of the oscilloscope. When using the probe hook-tip, inserting the tip onto the probe firmly to ensure a proper connection. Attach the probe tip to the Probe compensator connector and the reference lead to the ground pin, Select CH1, and then press AUTO.

2. Check the shape of the displayed waveform.

Over compensated Correctly Compensated Under Compensated

Figure 1-9

Figure 1- 9

Probe Compensation

3. If necessary, use a non-metallic tool to adjust the trimmer capacitor on the probe

for the flattest square wave possible as displayed on the oscilloscope.

4. Repeat as necessary.

WARNNING: To avoid electric shock while using the probe, be sure the perfection of the insulated cable, and do not touch the metallic portions of the probe head while it is connected with a voltage source.

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Digital Leads (DS1000D Series)

Digital leads are provided only for DS1000D series which have Logic Analyzer.

1. Switch off power supply of the device under test if necessary to avoid short

circuit. Since no voltage is applied to the leads at this step, you may keep the oscilloscope on.

2. Connect one end of the flat cable FC1868 to the Logic Analyzer Input; connect

the other end to Logic Head LH1116. An identifier is located on each end of the flat cable; it can only be connected in one way. It is unnecessary to switch off power supply of your oscilloscope when connecting the cable.

Figure 1- 10

Connect the digital leads

CAUTION: Use only FC1868, LH1116, TC1100 and LC1150 made by RIGOL for specified DS1000D series.

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Test clip

GND

3. Connect a test clip to one lead wire; make sure it’s connection good.

Figure 1- 11

4. Test your device with the clip.

Figure 1- 12

5. Remember to connect Ground Channel to the DUT’s ground terminal.

Figure 1- 13

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To Display a Signal Automatically

The oscilloscope has an automated feature to display the input signal best-fit. The input signal should be 50Hz or higher and a duty cycle is greater than 1%.

Press the AUTO button, the oscilloscope automatically sets up VERTICAL, HORIZONTAL and TRIGGER controls to display the input signal. Adjust the controls manually to get the best results if necessary.

Connect a signal to the Channel 1 (CH1).

1. Connect a signal to the oscilloscope as described above.

2. Press AUTO.

The oscilloscope may change the current settings to display the signal; and adjusts the vertical and horizontal scaling, the trigger coupling, type, position, slope, level, and mode.

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Measurement hints

If the channel is DC coupled, measuring the DC component of the signal by simply noting its distance from the ground symbol.

If the channel is AC coupled, the DC component of the signal is blocked, allow you to use greater sensitivity to display the AC component of the signal.

To Understand the Vertical System

Figure 1- 14 shows the VERTICAL controls, CH1, CH2, MATH, REF , and OFF buttons and vertical , knobs. Following the exercise of the buttons, knobs, and the status bar to be familiar with the vertical parameters settings.

1. Center the signal on the display with the knob.

The knob moves the signal vertically, and it is calibrated. Note that turning the knob, a voltage value is displayed for a short time indicating its value with respect to the ground reference located at the center of the screen. Also notice that the ground symbol on the left side of the display moves in conjunction with the knob.

Figure 1- 14

The vertical window

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Vertical offset back to 0 shortcut key

Turn the knob to change the vertical display position of channel and press the knob to set the vertical display position back to 0 as a shortcut key, this is especially helpful when the trace position is far out of the screen and want it to get back to the screen center immediately.

Coarse/Fine Shortcut key

The Coarse/Fine vertical control can be set by simply pressing the vertical

knob.

2. Change the vertical setup and notice that each change affects the status bar differently.

 View the status bar which is on the bottom of the screen to understand the

vertical scale.

 Change the vertical scale by turning the knob and notice the change

in the status bar.

 Press OFF button to turn off the channel.

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1-14

Delayed Scan Shortcut key

To press the knob in the horizontal control area on the front-panel is another way to enter or exit Delayed Scan mode and it is equal to the following menu operations, MENU→Delayed→ON.

To Understand the Horizontal System

Figure 1- 15 shows the HORIZONTAL controls: MENU button, and

knobs of horizontal system. Following the exercise to familiarize with the

buttons, knobs, and status bar.

Figure 1- 15

The horizontal system

1. Turn the knob and notice the change in the status bar.

The horizontal knob changes the sweep speed in a 1-2-5 step sequence, and displays the value in the status bar. The time base ranges of the oscilloscope is from 2ns/div* to 50s/div.

* NOTE: The speed of horizontal scan varies by different models.

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Horizontal offset back to 0 shortcut key

Press the knob to set the horizontal offset to 0 as a shortcut key, this is especially helpful when the trigger point is far out of the screen and want it to get back to the screen center immediately.

Horizontal position control

Trig-Offset: In this setting, the trigger position will be changed horizontally

when you turn the knob.

2. The horizontal knob moves displayed signal horizontally

on waveform window

3. Press the MENU key to display the TIME menu.

To enter or exit the Delayed Scan mode, set the display to Y-T, X-Y or ROLL mode, and turn the horizontal knob to adjust trigger offset.

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1-16

Turn the knob to change trigger level value and press the knob to set trigger level back to 0 as a shortcut key.

To Trigger the Oscilloscope

Figure 1- 16 shows the trigger control: MENU, 50%, FORCE and a trigger level knob. Following the exercise to familiarize with the buttons, trigger level knob and status bar.

Figure 1- 16

The trigger control window

1. Turn the trigger Level knob and notice the changes on the display.

As you turn the knob or pressing the 50% button, two things will happen on the display for a short time.

 First, the trigger level value is displayed at the bottom-left of the screen. If the

trigger is DC coupled, it is displayed as a voltage value. If the trigger is AC coupled or LF reject, it is displayed as a percentage of the trigger range.

 Second, a line is displayed showing the location of the trigger level (as long as

AC coupling or low frequency reject are not selected).

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Key point:

Holdoff: A time interval before the oscilloscope response to next trigger signal. During this holdoff period, the trigger system becomes “blind” to trigger signals. This function helps to view complex signals such as an AM waveform. Press Holdoff button to activate ( ) knob, then turn it to adjust Holdoff time.

2. Change the trigger setup and notice these changes in the status bar.

Press MENU button in the Trigger control. A soft button menu appears on the display showing the trigger setting choices as shown in Figure 1- 17 .

Figure 1- 17

· Press the trigger Mode button and choose Edge.

· Press the trigger Source button to select CH1.

· Press the trigger Slope button to choose .

· Press the trigger Sweep button to select Auto.

· Press the trigger Set Up button to enter secondary menu.

NOTE: The trigger type, slope and source change in conjunction with the status bar on the top-right of the screen.

3. Press 50%

The 50% button sets the trigger level to the center of the signal.

4. Press FORCE

Starting an acquisition regardless of an adequate trigger signal, usually used in “Normal” or “Single” trigger mode. This button has no effect if the acquisition is already stopped.

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User’s Guide for DS1000E, DS1000D Series

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2-1

Chapter 2 : Operating Your Oscilloscope

By now, a user should understand the VERTICAL, HORIZONTAL and TRIGGER control systems and knows how to determine the system setup by status bar of a DS1000E, DS1000D series digital oscilloscope. This chapter will go through all groups of front-panel buttons, knobs and menus; and further the knowledge of the operation by hints in this guide. It is recommended to perform all of the following exercises to get the most of the powerful measurement capabilities of the oscilloscope.

This chapter covers the following topics:

 To set up the vertical system ( CH1, CH2, MATH, REF, LA, OFF,

Vertical , Vertical )

 To set up the horizontal system ( MENU, Horizontal ,

Horizontal )

 To set up the trigger system ( , MENU, 50%, FORCE)  To set up the sampling system ( Acquire)  To set up the display system ( Display)  To save and recall waveforms, CSV format, bmp format and other setups

( Storage)

 To set up utility ( Utility)  To measure automatically ( Measure)  To measure with cursors ( Cursor)  To use run control buttons ( AUTO, RUN/STOP)

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2-2

Menu

Settings

Comments

Coupling

AC

DC

GND

Blocks the DC component of the input Signal Passes both AC and DC components of the input signal Disconnects the input signal

BW Limit

ON

OFF

Limits the channel bandwidth to 20MHz to reduce display noise. Get full bandwidth.

Probe

1X 5X 10X 50X 100X 500X 1000X

Set this to match your probe attenuation factor to make the vertical scale readout correct

Digital filter

Setup digital filter (See table 2-4)

1/2

Go to the next menu page (The followings are the same, no more explanation)

To Set up the Vertical System

Settings of the Channels

Each channel has an operation menu and it will pop up after pressing CH1 or CH2 button. The settings of all items in the menu are shown in the table below.

Figure 2- 1 Table 2- 1 The Channel menu (Page 1/2)

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2-3

Menu

Settings

Comments

2/2

Back to the previous menu page (The followings are the same, no more explanation)

Volts/Div

Coarse

Fine

Selects the resolution of the

knob Defines a 1-2-5 sequence. To change the resolution to small steps between the coarse settings.

Invert

ON OFF

Turn on the invert function. Restore original display of the waveform.

Figure 2- 2 Table 2- 2 The Channel menu (Page 2/2)

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User’s Guide for DS1000E, DS1000D Series

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AC coupling setup

AC coupling status symbol

1. Channel coupling

To use Channel 1 as an example, input a sine wave signal with DC shift.

Press CH1→Coupling→AC to set “AC” coupling. It will pass AC component blocks the DC component of the input signal.

The waveform is displayed as Figure 2- 3:

Figure 2- 3

AC coupling setting

Press CH1→Coupling→DC, to set “DC” coupling. It will pass both AC and DC components of the input signal.

The waveform is displayed as Figure 2- 4:

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GND coupling setup

GND coupling status symbol

DC coupling setup

DC coupling status symbol

Figure 2- 4

DC coupling setting

Press CH1→Coupling→GND, to set “GND” coupling, it disconnects the input signal.

The screen displays as Figure 2-5:

Figure 2- 5

GND coupling setting

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2-6

Turn off the BW limit

2. Set up the channel bandwidth limit

To use Channel 1 as an example, input a signal containing high frequency component.

Press CH1 →BW Limit→OFF, to set up bandwidth limit to “OFF” status. The oscilloscope is set to full bandwidth and passing the high frequency component in the signal.

The waveform is displayed as Figure 2- 6:

Figure 2- 6

Turn off the BW limit

Press CH1→BW Limit→ON, to set up bandwidth limit to “ON” status. It will reject the frequency component higher than 20MHz.

The waveform is displayed as Figure 2- 7:

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20M BW limit

Mark of BW limit

Figure 2- 7

Turn on the BW limit

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Probe attenuation factors

Corresponding settings

1:1

1X

5:1

5X

10:1

10X

50:1

50X

100:1

100X

500:1

500X

1000:1

1000X

Probe attenuation

Vertical volt/div.

3. Probe Attenuation Setting

The oscilloscope allows selecting the attenuation factor for the probe. The attenuation factor changes the vertical scaling of the oscilloscope so that the measurement results reflect the actual voltage levels at the probe tip. To change (or check) the probe attenuation setting, press the CH1 or CH2 button (according to which channel in using). Toggle the Probe soft button to match the attenuation factor of the probe. This setting remains in effect until changed again.

Figure 2-8 shows an example for using a 1000:1 probe and its attenuation factor.

Figure 2- 8

Use the 1000:1 attenuation

Table 2- 3 Probe setting

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Coarse/Fine Shortcut key:

To change Coarse/Fine setting, not only by menu but also by pressing vertical

knob

Fine adjustment

Fine adjustment data

4. Volts/Div settings

The Volts/Div control has Coarse or Fine configuration. The Vertical Sensitivity is

2mV/div - 10V/div.

Coarse: It is the default setting of Volts/Div in a 1-2-5-step sequence from

2mV/div、5mV/div、10mV/div、20mV/div……10V/div.

Fine: This setting changes the vertical scale to small steps between the coarse

settings. It will be helpful to adjust the waveform in smooth steps.

Figure 2- 9

Fine configurations

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Invert ON

Invert OFF

5. To invert a waveform

Invert turns the displayed waveform 180 degrees, as respect to the ground level. When the oscilloscope is triggered on the inverted signal, the trigger is also inverted.

Figure 2- 10 and Figure 2- 11 show the changes after inversion.

Figure 2- 10

The waveform before inversion

Figure 2- 11

The waveform after inversion

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Turn off digital filter

Turn on digital filter

Mark of digital filter

Digital Filter:

Press CH1→Digital filter, display the digital filter menu. Turn ( ) knob to set high and low limit of frequency.

Figure 2- 12

The waveform when turning off digital filter

Figure 2- 13

The waveform when turning on digital filter

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Menu

Settings

Comments

Digital Filter

ON OFF

Turn on the digital filter Turn off the digital filter

Filter Type

Setup as LPF (Low Pass Filter) Setup as HPF (High Pass Filter) Setup as BPF (Band Pass Filter) Setup as BRF (Band Reject Filter)

Upper limit <frequency>

Turn ( ) knob to set high limit

Lower limit <frequency>

Turn ( ) knob to set low limit

Back to higher level menu (The followings are the same, no more explanation)

Figure 2- 14 Table 2- 4 The Filter menu

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Menu

Settings

Comments

Operation

A+B

A-B

A× B

FFT

Add source A and source B Subtract source B from source A Multiply source B by source A Fast Fourier Transform

Source A

CH1 CH2

Define CH1 or CH2 as source A

Source B

CH1 CH2

Define CH1 or CH2 as source B

Invert

ON

OFF

Invert the MATH waveform. Restore to original waveform display.

MATH scale

Math Functions

The mathematic functions include “add”, “subtract”, “multiply” and “FFT” for

Channel 1 and Channel 2. The mathematic result can be measured by grid and cursor.

Figure 2- 15

The Math function

Figure 2- 16 Table 2- 5 The Math menu

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Menu

Settings

Comments

Operate

A+B A-B A x B FFT

Add source A to source B Subtract source B from source A Multiply source B by source A Fast Fourier Transform

Source

CH1 CH2

Define CH1 or CH2 as FFT source

Window

Rectangle Hanning Hamming Blackman

Select window for FFT Display

Split Full screen

Display FFT waveform on half screen

Display FFT waveform on full screen

Scale

Vrms dBVrms

Set “Vrms ” as vertical unit Set “dBVrms ” as vertical unit

Key points for FFT

1. Signals that have a DC component or offset can cause incorrect FFT waveform

component magnitude values. To minimize the DC component, choose AC Coupling on the source signal.

2. To reduce random noise and aliases components in repetitive or single-shot

events, set the oscilloscope acquisition mode to average.

3. To display FFT waveforms with a large dynamic range, use the dBVrms scale.

The dBVrms scale displays component magnitudes using a log scale.

Using the FFT

The FFT (Fast Fourier Transform) process converts a time-domain signal into its frequency components mathematically. FFT waveforms are useful in the following applications:

 Measuring harmonic content and distortion in systems  Characterizing noise in DC power supplies  Analyzing vibration

Figure 2- 17 Table 2- 6 The FFT menu

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Window

Features

Best for measuring

Rectangle

Best frequency Resolution and worst magnitude resolution. This is essentially the same as no window.

Transients or bursts, the signal levels before and after the event are nearly equal. Equal-amplitude sine waves with fixed frequencies. Broadband random noise with a relatively slow varying spectrum.

Hanning Hamming

Better frequency, poorer magnitude accuracy than Rectangular. Hamming has slightly better frequency resolution than Hanning.

Sine, periodic, and narrow-band random noise. Transients or bursts where the signal levels before and after the events are significantly different.

Blackman

Best magnitude, worst frequency resolution.

Single frequency waveforms, to Find higher order harmonics.

Key points: FFT Resolution: the quotient between sampling rate and number of FFT

points. With a fixed FFT points, the lower sampling rate results in better resolution.

Nyquist Frequency

The highest frequency that any real-time digitizing oscilloscope can acquire without aliasing. It’s normally half of the sample rate. This frequency is called the Nyquist frequency. Frequency above the Nyquist frequency will be under sampled, causing a situation known as aliasing.

Selecting an FFT Window

The oscilloscopes provide four FFT windows. Each window is a trade-off between frequency resolution and amplitude accuracy. What you want to measure and your source signals characteristics help determine which window to use. Use the following guidelines to select the best window.

Table 2- 7 FFT Windows

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Menu

Settings

Comments

Source

CH1

CH2

MATH/FFT

LA

Select channel1 as REF channel

Select channel2 as REF channel

Select Math/FFT as REF channel

Select LA as REF channel (DS1000D series)

Location

Internal External

Select memory location in scope Select memory location out scope

Save

Save REF waveform

Imp./Exp.

Go to import/export menu(see table 2-10)

Reset

Reset REF waveform

Menu

Settings

Comments

Source

CH1

CH2

MATH/FFT

LA

Select channel1 as REF channel

Select channel2 as REF channel

Select Math/FFT as REF channel

Select LA as REF channel (DS1000D series)

Location

Internal External

Select memory location in scope Select memory location out scope

Save

Save REF waveform to outer memory location

Import

Go to import menu(see table 2-14)

Reset

Reset REF waveform

Using REF

Reference Waveforms are saved waveforms to be selected for display. The reference function will be available after saving the selected waveform to non-volatile memory.

Press REF button to display reference waveform menu.

Figure 2- 18 Table 2- 8 REF menu when using internal memory

Figure 2- 19 Table 2- 9 REF menu when using external memory

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Import and Export

Menu

Settings

Comments

Explorer

Path Directory File

Switch to Path, directory or file

Export

Export the REF file from internal memory to export memory (see table 2-11)

Import

Import the REF file to internal memory

Delete File

Delete file

Press REF →Imp./Exp. and go to the following menu.

Figure 2- 20 Table 2- 10 The Imp./Exp. menu

The figure of import and export as following

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Figure 2- 21

Import of export the figure

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Menu

Settings

Comments

Move the cursor up

Move the cursor down

To delete chosen letter

Save

Execute the operation

Export

Press REF→Imp./Exp.→Export and go to the following menu.

Figure 2- 22 Table 2- 11 The Export menu

The figure of export as following.

Figure 2- 23

Figure export

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Save to External Memory

Menu

Settings

Comments

Explorer

Path Directory File

Switch among Path, Directory and File

New File (Folder)

Set up new file in Path and File. Set up new folder in directory.

Delete File(Folder)

Delete file(Folder)

Press REF→Save and go to the following menu.

Figure 2- 24 Table 2- 12 The Save menu

The figure of Save as following:

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Figure 2- 25

Save the figure

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Menu

Settings

Comments

Move the cursor up

Move the cursor down

To delete chosen letter

Save

Execute the operation

Character window

Switch Capital on/off Switch Chinese/English

Spell key in

File name key in

New File (or New Folder)

Press REF→Save→New File (or New Folder) and go to the following menu.

Figure 2- 26 Table 2- 13 The New File menu

The figure of key in as following

Figure 2- 27

Chinese Input

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Import

Menu

Settings

Comments

Explorer

Path Directory File

Switch among Path, Directory and File

Import

Import the REF file into internal memory

Press REF→Import and go to the following menu.

Figure 2- 28 Table 2- 14 The Import menu

The figure of import as following.

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Figure 2- 29

Figure import

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Displaying a Reference Waveform

Figure 2- 30

Reference waveform display

1. Push REF button to show the reference waveform menu.

2. Press soft button No.1 to select the reference channel: CH1, CH2, MATH, FFT or

LA (DS1000D series).

3. Turn vertical and vertical to adjust the REF waveform

to a suitable position.

4. Press soft button No.2 to select the save location of REF waveform.

5. Press soft button No.3 to save the waveform as REF.

NOTE: The reference function is not available in X-Y mode.

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Menu

Settings

Comments

D7-D0

Set up channel group D7-D0 (see table 2-16)

D15-D8

set up channel group D15-D8 (see 2-17)

Current <D15-D0>

Select channel by turning ( ) knob

Threshold

TTL

CMOS

ECL

User

Select mode of whole digital channels. The threshold voltage can set by user when in user-defined style.

User

<Threshold

Voltage>

Set threshold voltage by turning ( ) knob.

Set up LA Channel (DS1000D Series)

Single channel or group channels can be chosen ON or OFF, and also can set the size of waveform. Change display location of digital channel on screen and select threshold style.

Press LA function button and go to the following menu.

Figure 2- 31 Table 2- 15 The LA menu

1. Display and re-line up the digital channels

(1) Press LA→D7-D0 or D15-D8 and go to the group channel setting menu. Turn on

or turn off the display of the digital channels.

(2) Press LA→current and choose digital channel by turning ( ) knob. The chosen

channel will display in red color.

(3) Turn vertical knob to re-position the channel in screen.

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Select running channel

Running channel

Setup threshold

Setup data of threshold by user

The figure of menu shows as follow.

Turn on the digital channel

Figure 2- 32

2. Set threshold mode of digital channels

Press LA→Threshold, select logic standard or User to define your own threshold voltage.

The figure of menu shows as follow.

Figure 2- 33

Set the threshold

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Threshold explanation

LOGIC STANDARD THRESHOULD VLOTAGE

TTL 1.4V

CMOS 2.5V

ECL -1.3V

User -8V to +8V

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Menu

Settings

Comments

channel

D7-D0

Turn on or off single channel of D7-D0

D7-D0

Turn on Turn off

Turn on or off all 8 channels together

Size

Display 8 channels in a single screen Display 16 channels in a single screen

Reset

Reset waveform of channel D7-D0

Menu

Settings

Comments

channel

D15-D8

Turn on or off single channel of D15-D8

D15-D8

Turn on Turn off

Turn on or off 8 channels together

Size

Display 8 channels in a single screen Display 16 channels in a single screen

Reset

Reset waveform of channel D15-D8

Set up Channel Group

Press LA→D7-D0 or D15-D8; turn on/off the channel single, or in a group. Also you can change the size of waveforms in 8 bits as a group. See table 2-16 and 2-17

Figure 2- 34 Table 2- 16 The Digital Channel menu (Page 1)

Figure 2- 35 Table 2- 17 The Digital Channel menu (Page 2)

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On-off channels

Channel list and status of on-off

1. Turn on or off a single logic channel

Press LA →D7-D0→Channel, and choose the wanted channel by turning ( ) knob. Press No. 1 soft button or push down ( ) knob to turn on /off the channel. When the channel is on, we can see the mark ( ). When the channel is turned off; the mark will display as ( ).

As figure 2-36 shows.

Figure 2- 36

Turn on or off the digital channel

2. Force turn on or off all logic channels

Press LA →D7-D0→Turn On / Turn Off (or D15-D8 →Turn On / Turn Off) will force to turn all the channels on/off. If you want to turn on/off any single channel instead, select the Channel by turning ( ) knob, then press No. 1 soft button or ( ) knob.

3．Set up the viewing size of logic channels: Press LA→D7-D0→Size, or D15-D8→Size, to select wave size of logic channels. Select to view 8 channels on the screen；Select to view all of the 16 channels on the screen.

4．Reset the logic channels display:

Press LA→D7-D0→Reset, or D15-D8→Reset to reset the display of logic channels.

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Channel Mode

Settings

Status Indicator

Channel 1 (CH1)

ON Selected OFF

CH1 (black letter)

CH1 (yellow letter)

No indicator

Channel 2 (CH2)

ON Selected OFF

CH2 (black letter)

CH2 ( blue letter)

No indicator

MATH

ON Selected OFF

Math (black letter)

Math (purple letter)

No indicator

Turn on/off Channels

The CH1, CH2, Ext. Trigger and LA (DS1000D series) channels are input channels. All functionalities applied will be based on operating the instrument with channels. So MATH and REF can be regarded as relatively isolated channels.

To turn on/off any one of the channels, press the corresponding button on the front panel. The key backlight indicates the channel is currently active. Press the button again to turn the channel off. Or when channel is currently selected, press OFF will turn the channel off as well, and the key backlight also goes off.

Table 2- 18 Status of the channels

NOTE:

The channel status symbol is displayed at the lower-left of the screen. Pressing LA will turn all the digital channels on/off.

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Set up Vertical Position and Scale

You can use the vertical controls to display waveforms, adjust vertical and , and set input parameters.

1. Using vertical knob.

The vertical control changes the position of signal waveforms in all channels (including MATH and REF). The resolution changes according to the vertical level set. Pressing this knob will clear the channel offset to zero. (The function is available for DS1000D series, but not includes digital channel.)

2. Using vertical knob.

The vertical can change the vertical sensitivity of waveforms in all channels (including MATH and REF, excluding LA). If the Volts/Div is set to

“Coarse”, the waveform scales in a 1-2-5 step sequence from 2 mV to 5 V. If the Volts/Div is set to “Fine”, it scales to small steps between the coarse settings.

3. Channels can be adjusted by the vertical and only when

they are selected.

4. During the vertical position, a position message is displayed on the left bottom

of the screen, in the same color as the corresponding channel. The unit is V (Volts).

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To Set up the Horizontal System

The oscilloscope shows the time per division in the scale readout. Since all active waveforms use the same time base, the oscilloscope only displays one value for all the active channels, except when using Delayed Scan, or Alternative Trigger.

The horizontal controls can change the horizontal scale and position of waveforms. The horizontal center of the screen is the time reference for waveforms. Changing the horizontal scale causes the waveform to expand or contract about the screen center.

Horizontal position changes the displayed waveform position, relative to the trigger point.

The Horizontal Knobs

: The horizontal knob adjusts the horizontal position of

all channel (include Math) waveforms. The resolution of this control varies with the time base. Pressing this button clears trigger offset and moves the trigger point to the horizontal center of the screen.

: Use to select the horizontal time/div (scale factor) for the

main or the Delayed Scan time base. When Delayed Scan is enabled, it changes the width of the window zone by changing the Delayed Scan time base.

Horizontal Menu.

Press the horizontal MENU button to display the horizontal menu. The settings of this menu are listed in the following table.

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Menu

Settings

Comments

Delayed

ON OFF

Turn on Delayed Scan mode Turn off the Delayed Scan mode

Time Base

Y-T

X-Y

Roll

Show the relative relation between vertical voltage and horizontal time. Show CH1 value at X axis; CH2 value at Y axis. In Roll Mode, the waveform display updates from right to left.

Sa Rate

Show system sample rate

Trig-offset Reset

Adjust to the center

Figure 2- 37 Table 2- 19 The Horizontal menu

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④ ⑤

① ② ③

Figure 2- 38

Status bar and mark for Horizontal control

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Key Points

Y-T: The conventional oscilloscope display format. It shows the voltage of a

waveform record (on the vertical axis) as it varies over time (on the horizontal axis).

X-Y: XY format displays channel 1 in the horizontal axis and channel 2 in the

vertical axis.

Roll Mode: In this mode, the waveform display rolls from right to left. No trigger

or horizontal offset control of waveforms is available during Roll Mode, and it’s only available when set to 500 ms/div or slower.

Slow Scan Mode: This mode is available when the horizontal time base is set to

50ms/div or slower. In this mode, the oscilloscope acquires sufficient data for the left part to the trigger point, then wait for trigger, when trigger occurs, it continues to draw the rest part from the trigger point to the end of the right side. When choosing this mode to view low frequency signals, it is recommended that the channel coupling be set as DC.

Time/Div: Horizontal scale. If the waveform acquisition is stopped (using the

RUN/STOP button), the Time/Div control expands or compresses the waveform.

Marks Indicator

① The current waveform window’s position in the memory.

② The trigger position in the memory.

③ The trigger position in the current waveform windows.

④ The horizontal time base (main time base).

⑤ The trigger’s horizontal offset according to the center of the window.

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Waveform to be horizontally expanded

Expanded waveform in horizontal Main timebase

Time base of Delayed Scan

Delayed Scan:

The Delayed Scan is a magnified portion of the main waveform window. Use Delayed Scan to locate and horizontally expand part of the main waveform window for a more detailed (higher horizontal resolution) analysis of signal. The Delayed Scan time base setting cannot be set slower than the Main time base setting.

Figure 2- 39

Delayed Scan window

The following steps show you how to use Delayed Scan.

1. Connect a signal to the oscilloscope and obtain a stable display.

2. Press horizontal MENU→Delayed→ON or press horizontal knob to

enter Delayed Scan mode.

The screen splits into two parts. The upper half displays the main waveform window and the lower half displays an expanded portion of the main waveform window. This expanded portion of the main window is called the Delayed Scan window. Two blocks shaded at the upper half; the un-shaded portion is expanded in the lower half. The horizontal and knobs control the size and position of the Delayed Scan. The value at bottom of the screen is the main time base and the

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Delayed Scan Shortcut Key: Delayed Scan function can be activated not only by menu but also by pressing horizontal knob.

value on the center bottom means the Delayed Scan time.

 Use the horizontal knob to change the position of the expanded

portion.

 Use the horizontal knob to adjust the Delayed Scan resolution.

 To change the main time base, turn off the Delayed Scan mode.  Since both the main and Delayed Scan are displayed; there are half as many

vertical divisions so the vertical scaling is doubled. Notice the changes in the status bar.

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X-Y Format

This format is useful for studying phase relationships between two signals.

Channel 1 in the horizontal axis(X) and channel 2 in the vertical axis(Y), the oscilloscope uses a none-trigger acquisition mode, data is displayed as dots.

Figure 2- 40

X-Y display format

NOTE：In Y-T format, all sample rates are available. But in X-Y format, 100 MSa/s

is not available. In common, deceasing the sample rate can display the wavefrom better. The following modes or functions will not work in X-Y format.

 LA Function (DS1000D series)  Automatic Measurements  Cursor Measurements  REF and MATH Operations  Delayed Scan Mode  Vector Display Mode  Horizontal knob  Trigger Controls

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To Set up the Trigger System

The trigger determines when the oscilloscope starts to acquire data and display a waveform. When a trigger is set up properly, it can convert unstable displays or blank screens into meaningful waveforms.

When the oscilloscope starts to acquire a waveform, it collects enough data so that it can draw the waveform to the left of the trigger point. The oscilloscope continues to acquire data while waiting for the trigger condition to occur. After it detects a trigger, the oscilloscope continues to acquire enough data so that it can draw the waveform to the right of the trigger point.

The trigger control area on the front panel includes a knob and three buttons:

: The knob that set the trigger level; press the knob and the level will

reset to zero.

50%: The instant execute button setting the trigger level to the vertical

midpoint between the peaks of the trigger signal

FORCE: Force to create a trigger signal and the function is mainly used in

Normal and Single mode

MENU: The button that activates the trigger controls menu.

Figure 2- 41

Trigger controls

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Trigger Modes

The oscilloscope provides seven trigger modes: Edge, Pulse, Slope, Video, Alternative, Pattern (only for DS1000D series) and Duration trigger (only for DS1000D series).

Edge: An edge trigger occurs when the trigger input passes through a specified

voltage level in the specified slope direction.

Pulse: Use this trigger type to catch pulses with certain pulse width.

Video: Use video trigger on fields or lines for standard video signals.

Slope: The oscilloscope begins to trigger according to the signal rising or falling

speed.

Alternative: Trigger on non-synchronized signals

Pattern: To Trigger through detecting a specified code.

Duration: To trigger within a specified time on the conditions of a specified code

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Menu

Settings

Comments

Source

CH1 CH2 EXT AC Line D15-D0

Select CH1 as trigger signal Select CH2 as trigger signal Select EXT TRIG as trigger signal Select power line as trigger signal Select a digital channel in D15-D0 as trigger source (for DS1000D series)

Slope

Rising Falling

Rising &

Falling

Trigger on rising edge Trigger on falling edge Trigger on both ring & falling edge

Sweep

Auto

Normal Single

Acquire waveform even no trigger occurred Acquire waveform when trigger occurred. When trigger occurs, acquire one waveform then stop

Set up

To go to Set Up menu, see table 2-38

Settings for Edge Trigger

An edge trigger determines whether the oscilloscope finds the trigger point on the rising or the falling edge of a signal. Select Edge trigger Mode to trigger on Rising edge, falling edge or rising & falling edge.

Figure 2- 42 Table 2- 20 The Edge Trigger menu

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Menu

Settings

Comments

Source

CH1 CH2 EXT D15-D0

Selects CH1 as trigger signal Select CH2 as trigger signal Select EXT TRIG as trigger signal Select a digital channel in D15-D0 as trigger source( Only for DS1000D series)

When

(+Pulse width

less than)

(+Pulse width

more than)

(+Pulse width

equal to)

(-Pulse width

less than)

(-Pulse width

more than)

(-Pulse width

equal to)

To select pulse condition

Settings <Width>

Set required pulse width

Settings for Pulse Width Trigger

Pulse trigger occurs according to the width of pulse. The abnormal signals can be detected through setting up the pulse width condition.

Figure 2- 43 Table 2- 21 The Pulse Trigger menu (page 1/2)

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Menu

Settings

Comments

Sweep

Auto

Normal Single

Acquire waveform even no trigger occurred Acquire waveform when trigger occurred. When trigger occurs, acquire one waveform and then stop

Set Up

To go to Set Up menu, see table 2-38

Figure 2- 44 Table 2- 22 The Pulse Trigger menu (page 2/2)

NOTE: The Pulse width adjust range is 20ns ~ 10s. When the condition is met, it will

trigger and acquire the waveform.

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Menu

Settings

Comments

Source

CH1 CH2 EXT

Selects CH1 as trigger source Select CH2 as trigger source Select EXT TRIG as trigger source

Polarity

Normal polarity

Inverted polarity

Triggers on negative going sync pulses

Triggers on positive going sync pulses

Sync All Lines

Line Num

Trigger on all lines Trigger on an specified line

Odd field Even field

Select to trigger on odd field Select to trigger on even field

Settings for Video Trigger

Choose video trigger to trigger on fields or lines of NTSC, PAL, or SECAM standard video signals. Trigger coupling preset to DC.

Figure 2- 45 Table 2- 23 The Video Trigger menu (Page 1/2)

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Menu

Settings

Comments

Line Num < Line sync >

Select the specified line number for

sync

Standard

PAL/SECM NTSC

Select Video standard

Sweep

Auto

Normal Single

Acquire waveform even no trigger occurred Acquire waveform when trigger occurred. When trigger occurs, acquire one waveform and then stop

Set Up

To go to set up menu, see table

2-39

Figure 2- 46 Table 2- 24 The Video Trigger menu (Page 2/2, when Sync is set as

the specified line)

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Menu

Settings

Comments

Standard

PAL/SECAM NTSC

Select Video standard

Sweep

Auto

Normal Single

Acquire waveform even no trigger occurred Acquire waveform when trigger occurred. When trigger occurs, acquire one waveform and then stop

Set Up

To go to set up menu, see table 2-39

Figure 2- 47 Table 2- 25 The Video menu (When the Sync is set as All lines, Odd

field and Even field)

Key points

Sync Pulses: When Normal Polarity is selected, the trigger always occurs on

negative-going sync pulses. If the video signal has positive-going sync pulses, use the inverted Polarity selection.

Figure 2- 48

Video Trigger: Line Synchronization

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Figure 2- 49

Video Trigger: Field Synchronization

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Menu

Settings

Comments

Source

CH1

CH2

EXT

Set channel 1 as trigger source Set channel 2 as trigger source Set EXT. channel as trigger source

When

To select the pulse condition

Time <Time Set >

To set slope time

Menu

Settings

Comments

Vertical

Select the level that can be adjusted by

Sweep

Auto

Normal

Single

Acquire waveform even when no trigger condition is met. Acquire waveform when trigger condition is met. When trigger condition is met, acquire one waveform and then stop

Set Up

To go to set up menu. See table 2-38

Slope Trigger

Slope trigger sets the oscilloscope as the positive/negative slope trigger within the specified time.

Figure 2- 50 Table 2- 26 The Slope Trigger menu (Page 1/2)

Figure 2- 51 Table 2- 27 The Slope Trigger menu (Page2/2)

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NOTE: Slope time can be set from 20ns to 10s. When a signal meets the trigger condition, scope will execute the acquisition. You can adjust LEVEL A/ LEVEL B or both simultaneous by turning the knob.

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Menu

Settings

Comments

Select

CH1

CH2

Set trigger mode for Channel 1 Set trigger mode for Channel 2

Type

Edge

Set Edge Trigger as the trigger type

Slope

(Rising) (Falling)

Trigger on rising edge Trigger on falling edge

Set Up

To go to set up menu. See table 2-38

Alternative Trigger

When alternative trigger is on, the trigger sources come from two vertical channels. This mode can be used to observe two non-related signals. You can choose two different trigger modes for the two vertical channels. The options are as follows: Edge, Pulse, Slope and video. The info of the trigger level of the two channels will be displayed on the upper-right of the screen.

Figure 2- 52 Table 2- 28 The Alternative menu (Trigger Type: Edge)

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Menu

Settings

Comments

Select

CH1

CH2

Set trigger mode for Channel 1 Set trigger mode for Channel 2

Type

Pulse

Set Pulse Trigger for the channel

When

(+Pulse width less than)

(+Pulse width more than)

(+Pulse width equal to)

(-Pulse width less than)

(-Pulse width more than) (-Pulse width equal to)

To select pulse condition

Menu

Settings

Comments

Setting

Set the width of the pulse

Set Up

To go to set up menu. See table 2-38

Figure 2- 53 Table 2- 29 (Trigger Type: Pulse, Page 1/2)

Figure 2- 54 Table 2- 30 The Alternative menu (Trigger Type: Pulse, Page 2/2)

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Menu

Settings

Comments

Select

CH1

CH2

Set trigger mode for Channel 1 Set trigger mode for Channel 2

Type

Slope

Set Slope Trigger for the vertical channel

When

Set trigger condition

Menu

Settings

Comments

Time <Time Set >

Set slope time

Vertical

Select the level to be adjusted by

Set Up

To go to set up menu. See table 2-38

Figure 2- 55 Table 2- 31 The Alternative menu (Trigger Type: Slope, Page 1/2)

Figure 2- 56 Table 2- 32 The Alternative menu (Trigger Type: Slope Page 2/2)

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Menu

Settings

Comments

Select

CH1

CH2

Set trigger mode for Channel 1 Set trigger mode for Channel 2

Type

Video

Video Trigger for the channel

Polarity

Normal polarity

Inverted polarity

Triggers on negative going sync pulses Triggers on positive going sync pulses

Menu

Settings

Comments

Sync ALL lines

Line Num

Trigger on all lines Trigger on an specified line

Odd field Even field

Select to trigger on odd field or even field

Line Num

Select the specified line number for sync

Standard

PAL/SECM NTSC

Select Video standard

Set Up

To go to set up menu, see table 2-39

Figure 2- 57 Table 2- 33 The Alternative menu (Trigger Type: Video, Page 1/2)

Figure 2- 58 Table 2- 34 The Alternative menu (Trigger Mode: Video, Page 2/2)

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Menu

Settings

Comments

Select

D15-D0

Choose digital channel for Pattern trigger

Code

H L X

High Low Ignore Rising Edge Falling Edge

Sweep

Auto Normal Single

Acquire waveform even no trigger occurred Acquire waveform when trigger occurred When trigger occurs, acquire one waveform and then stop

Set Up

To go to set up menu, see table 2-40

Pattern Trigger (DS1000D Series)

Pattern trigger identifies trigger terms by checking appointed code. The code is logical relationship of all channels, with high (H), low (L) and ignore(X).

Figure 2- 59 Table 2- 35 The Pattern Trigger menu

Key Points:

H (High): Logic high: voltage is higher than threshold setting.

L (Low): Logic low: voltage is lower than threshold setting.

X (Ignore): Don’t care. If all the channels are ignored, the oscilloscope won’t be

triggered.

Rising Edge ( ) or Falling Edge ( ): Set the code as an edge of the channel,

rising edge or falling edge. When the edge is appointed, if code settings of other

channels are all true, the oscilloscope will be triggered on the appointed edge. If no

edge is appointed, the oscilloscope will be triggered on the last edge whose code is

true.

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Edge of appointed code

You can only appoint one code as edge. If you have appointed an edge, then appointed another edge in a different channel, and the first appointed edge will be set to X (Ignore).

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Duration Trigger (DS1000D Series)

Menu

Settings

Comments

Select

D15-D0

Choose digital channel for Duration Trigger

Code

H L X

High Low Ignore

Qualifier

< > = Set time limit terms

Menu

Settings

Comments

Time

Set duration and limit symbol time

Sweep

Auto Normal Single

Acquire waveform even no trigger occurred Acquire waveform when trigger occurred When trigger occurs, acquire one waveform and then stop

Set Up

To go to set up menu, see table 2-40

Trigger in appointed time when code terms are satisfied.

Figure 2- 60 Table 2- 36 The Duration Trigger menu (Page 1/2)

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Figure 2- 61 Table 2- 37 The Duration Trigger menu (Page 2/2)

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Key Points:

H (High): Logic high: voltage is higher than threshold setting.

L (Low): Logic low: voltage is lower than threshold setting.

X (Ignore): Don’t care. If all the channels are ignored, the oscilloscope won’t be

triggered.

Qualifier: A timer begins when code terms are satisfied. Duration trigger occurred

in the time set by the qualifier.

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Menu

Settings

Comments

Coupling

DC AC HF Reject LF Reject

Allow all signals pass Block DC signals Reject high frequency signals Reject DC and low frequency signals

Sensitivity <Sensitivity Setting>

Set trigger sensitivity

Holdoff <Holdoff Setting>

Set time slot before another trigger event

Holdoff Reset

Reset Holdoff time to 100ns

Menu

Settings

Comments

Sensitivity <Sensitivity Setting>

Set trigger sensitivity

Holdoff <Holdoff Setting>

Set time slot before another trigger event

Holdoff Reset

Reset Holdoff time to 100ns

Trigger Setup

Set up different trigger settings according to different trigger modes. When choosing

source as D15-D0 in the mode of Edge and Pulse (DS1000D series), only Holdoff is

adjustable. When source is non-digital channel and in slope trigger, only trigger coupling, trigger sensitivity and Holdoff can be set. For video trigger, Sensitivity and Holdoff can be set. For the pattern trigger and the duration trigger (DS1000D series),

only Holdoff is adjustable.

Figure 2- 62 Table 2- 38 The Trigger Set Up menu (Settings for trigger coupling,

trigger sensitivity and holdoff)

Figure 2- 63 Table 2- 39 The Trigger Set Up menu (Settings for sensitivity and

holdoff)

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Menu

Settings

Comments

Holdoff <Holdoff Setting>

Set time slot before another trigger event

Holdoff Reset

Reset Holdoff time to 100ns

Figure 2- 64 Table 2- 40 The Trigger Set Up menu (Settings only for holdoff)

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Time of holdoff

Trigger site

Trigger holdoff

Trigger Holdoff

Trigger Holdoff can stabilize complex waveform, such as the pulse range. Holdoff time is the oscilloscope’s waiting period before starting a new trigger. During Holdoff, oscilloscope will not trigger until Holdoff ends. For instance: To trigger on the first pulse on a group of them, users can set the holdoff time to Pulse cluster width.

Figure 2- 65

Trigger Holdoff

To use trigger Holdoff:

1. Press the trigger MENU button to display Trigger Menu.

2. Press Set Up key to display trigger set up menu.

3. Turn the multi function knob ( ) to change Holdoff time until waveform is

stable.

4. Pushing Trigger Hold off reset can reset the Holdoff time to its default value.

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Trigger Key points

1. Trigger Source:

Trigger can occur from several sources: Input channels (CH1 and CH2), AC Line, Ext.

 CH1 or CH2:

It is the most commonly used trigger source. The channel works when selected as a trigger source whatever displayed or not.

 Ext Trig:

The instrument can be triggered from a third source while acquiring data from CH1 and CH2. For example, to trigger from an external clock or with a signal from another part of the test circuit. The Ext trigger sources use an external trigger signal connected to the EXT TRIG connector. Ext uses the signal directly; it has a trigger level range of -1.2V to +1.2V.

 AC Line:

AC power can be used to display signals related to the power line frequency, such as lighting equipment and power supply devices. The oscilloscope gets triggered on its AC power input; an AC trigger signal is not required. When AC Line is selected as trigger source, the oscilloscope automatically set coupling to DC, set trigger level to 0V.

2. Sweep Mode:

The sweep mode determines how the oscilloscope behaves in the absence of a trigger event. The oscilloscope provides three trigger modes: Auto, Normal, and Single.

 Auto:

This sweep mode allows the oscilloscope to acquire waveforms even when it does not detect a trigger condition. If no trigger condition occurs while the oscilloscope is waiting for a specific period (as determined by the time-base setting), it will force itself to trigger.

When forcing invalid triggers, the oscilloscope cannot synchronize the waveform, and the waveform seems to roll across the display. If valid triggers occur, the display becomes stable on the screen.

Any factor results in the un-stability of waveforms can be detected by Auto

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Trigger, such as the output of Power supply.

NOTE: When horizontal control is set under 50 ms/div, Auto mode allows the oscilloscope not to capture trigger signal.

 Normal:

The Normal mode allows the oscilloscope to acquire a waveform only when it is triggered. If no trigger occurs, the oscilloscope keeps waiting, and the previous waveform, if any, will remain on the display.

 Single:

In Single mode, after pressing the RUN/STOP key, the oscilloscope waits for trigger. While the trigger occurs, the oscilloscope acquires one waveform then stop.

3. Coupling:

Trigger coupling determines which signal component passing to the trigger circuit. Coupling types include AC, DC, LF Reject and HF Reject.

 AC: AC coupling blocks DC components and attenuates the signal below

10Hz.

 DC: DC coupling passes both AC and DC components.  LF Reject: LF Reject coupling blocks DC component, and attenuates all

signal with a frequency lower than 8 kHz.

 HF Reject: HF Reject coupling attenuates all signals with a frequency

higher than 150 kHz.

4. Pre-trigger/delayed trigger:

The data collected before and after trigger.

The trigger position is typically set at the horizontal center of the screen. In the full-screen display the 6div data of pre-trigger and delayed trigger can be surveyed. More data (14div) of pre-trigger and 1s delayed trigger can be surveyed by adjusting the horizontal knob.

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This feature is very useful to study the events that led up to the trigger point. Everything to the right of the trigger point is called post-trigger information. The delay range (pre-trigger and post-trigger information) depends on the sweep speed selected.

5. Adjustable trigger sensitivity

To avoid the influence of noise from the physical world, and get the stable trigger, the trigger circuit has adopted Stickiness. In DS1000E, DS1000D series, the stickiness is adjustable from 0.1div-1.0div, which means when it sets to 1.0div, the trigger circuit will not affect any signal with peak-peak amplitude less than

1.0div, so as to avoid the influence of the noise.

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Menu

Settings

Comments

Acquisition

Normal Average Peak Detect

Normal Acquisition mode Average Acquisition mode Peak Detect Acquisition mode

Averages

2 to 256

Step by multiple of two. Set average times from 2 to 256

Sampling

Real-Time Equ-Time

Real-time sampling mode Equivalent sampling mode

Mem Depth

Long Mem Normal

Set up memory as 512k or 1M Set up memory as 8k or 16k

Sinx/x

ON OFF

Set the insert mode to sinx/x Set the insert mode to line

Acquire setup button

To Set up the Sampling System

As figure 2-66 shows, the Acquire button at the MENU of the front panel.

Figure 2- 66

The Front panel MENU

Press the Acquire button, the interface menu as follows:

Figure 2- 67 Table 2- 41 The Acquire menu

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The waveform displayed on the screen will change in conjunction with the setting of Acquire menu.

Figure 2- 68

Signal that contains noise, and without average sampling

Figure 2- 69

Display signal after average sampling

NOTE:

 Select Real-time acquisition to observe the single-shot or pulse signals.  Select Equ-Time to observe high frequency repetitive signals.

 To reduce the displayed random noise, select Average Acquisition. And this

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mode would make the screen refresh slower.

 To Avoid signal aliasing, select Peak Detect Acquisition.

Figure 2- 70

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Signal with Peak Detect Acquisition

The Peak Detect effect is shown as the figure above.

Stop Acquisition: When the scope is acquiring waveforms, the waveforms is in a live status; when acquisition is stopped, frozen waveform will be displayed, the position and scale can still be adjusted by vertical control and horizontal control.

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Key Points

Real-time Sampling:

The oscilloscope has Real-time sampling rate up to 1GSa/s. At the time base 50ns or faster, the oscilloscopes use the sine(x)/x interpolation to expand the horizontal time base.

Equivalent sampling:

Known as Repetitive sampling to get up to 40ps of horizontal resolution (equivalent 25Gsa/s). This mode is good for observing repetitive signals, and it is not recommended for single-shot or pulse.

Normal: Oscilloscope acquires signal by equal time interval.

Average Acquisition:

Apply averaging to your signal to remove uncorrelated noise and improve measurement accuracy. Reduces random or uncorrelated noise in the signal display. The averaged waveform is a running average over a specified number of acquisitions from 2 to 256.

Peak Detect:

Peak Detect mode captures the maximum and minimum values of a signal. Finds highest and lowest record points over many acquisitions.

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Menu

Setting

Comments

Type

Vectors Dots

Display waveforms as vectors Display waveforms as dots

Clear

Clear all existing waveforms from screen

persist

Infinite

OFF

The sample points remain displayed until turn the persistence “OFF”. Turn off the persistence function

Intensity <percentage >

Set up waveform intensity

Display setup button

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To Set up the Display System

Figure 2- 71 shows the menu button for the display system on the front panel.

Figure 2- 71

The Front Panel MENU

Press the Display button to pop up the menu for the settings of the display system.

Figure 2- 72 Table 2- 42 The Display menu (Page 1/2)

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Menu

Settings

Comments

Grid

Display grids and coordinates on the screen Turn off the grids Turn off the grids and coordinates

Brightness < percentage >

Set up grid brightness

Menu

Display

1s 2s 5s 10s 20s Infinite

Set the time before menu fades away. The menu will be hidden after the set time of last button pressing.

Adjusting waveform intensity

Default setup of multi-function knob ( ) is adjusting waveform intensity.

Figure 2- 73 Table 2- 43 The Display menu (Page 2/2)

Key points:

Display type: Display type includes Vector and Dot. In vectors type, oscilloscope

connects dots through digital interpolation including both linearity and sin(x)/x. Sin(x)/x interpolation is suitable for Real-time sampling and will be more effective at 50ns or faster time base.

Refresh rate: It is an important performance of digital oscilloscopes. It means the number of display refreshing per second and it will affect the ability to observe signal.

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Menu

Settings

Comments

Storage

Waveform Setups Bit map CSV Factory

Store or recall waveform Store or recall instrument setups Create or delete bit map files Create or delete CSV files Recall factory setups

Internal

Go to menu for internal memory operation (see table 2-48)

External

Go to menu for external memory operation (see table 2-49)

Disk Mana.

Go to disk manage menu (see table 2-50)

Storage setup button

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To Store and Recall

Figure 2- 74 shows the menu button for the storage system on the front panel.

Figure 2- 74

The Front Panel MENU

Press the Storage button to show the menu for the settings of the storage system. Waveforms and setups can be stored in and recalled from, both internal memory and external memory. The waveform file, setup file, bitmap and CSV file in external memory can be created and deleted. System supports English/Chinese key in.

Waveform and setup, the menu as following:

Figure 2- 75 Table 2- 44 The Storage menu

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Menu

Settings

Comments

Storage

Waveform Setups Bit map CSV Factory

Store or recall waveform Store or recall instrument setups Create or delete bit map files Create or delete CSV files Recall factory setups

Load

Recall factory setups or files

Disk Mana.

Go to disk manage menu (see table 2-50)

Menu

Settings

Comments

Storage

Waveform Setups Bitmap CSV Factory

Store or recall waveform Store or recall setups Create or delete bit map files Create or delete CSV files Recall factory setups

Data Depth

Displayed

Maximum

Save currently displayed waveform data to CSV file Save the whole waveform data in memory to CSV file

Para Save

On Off

Save the current oscilloscope settings in different format with the same file name

External

Go to menu for external memory operation (see table 2-49)

Disk Mana.

Go to disk manage menu (see table 2-50)

For factory default setups, the menu is as following:

Figure 2- 76 Table 2- 45 The Storage menu

Figure 2- 77 Table 2- 46 The Storage menu (For CSV)

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Menu

Settings

Comments

Storage

Waveform Setups Bit map CSV Factory

Store or recall waveform Store or recall setups Create or delete bit map files Create or delete CSV files Recall factory setups

Para Save

On Off

Save the current oscilloscope settings in different format with the same file name

External

Go to menu for external memory operation(see table 2-49)

Disk Mana.

Go to disk manage menu (see table 2-50)

Figure 2- 78 Table 2- 47 The Storage menu (For bitmap)

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Menu

Sett ings

Comments

Internal

Int_ 00 (N) . . . Int_ 09 (N)

Set up the location of files in internal memory

Load

Recall waveform files and setup files from the internal memory location

Save

Save waveform files and setup files to the internal memory location

Delete File (Folder)

Delete the selected location file (folder)

Internal Memory

Press Storage→Internal to go to the following menu.

Figure 2- 79 Table 2- 48 The Internl Memory menu

User’s Guide for DS1000E, DS1000D Series

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Specifications and Main Features

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